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Commit b3d6524f authored by Linus Torvalds's avatar Linus Torvalds
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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux 

Pull s390 updates from Martin Schwidefsky:

 - The remaining patches for the z13 machine support: kernel build
   option for z13, the cache synonym avoidance, SMT support,
   compare-and-delay for spinloops and the CES5S crypto adapater.

 - The ftrace support for function tracing with the gcc hotpatch option.
   This touches common code Makefiles, Steven is ok with the changes.

 - The hypfs file system gets an extension to access diagnose 0x0c data
   in user space for performance analysis for Linux running under z/VM.

 - The iucv hvc console gets wildcard spport for the user id filtering.

 - The cacheinfo code is converted to use the generic infrastructure.

 - Cleanup and bug fixes.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (42 commits)
  s390/process: free vx save area when releasing tasks
  s390/hypfs: Eliminate hypfs interval
  s390/hypfs: Add diagnose 0c support
  s390/cacheinfo: don't use smp_processor_id() in preemptible context
  s390/zcrypt: fixed domain scanning problem (again)
  s390/smp: increase maximum value of NR_CPUS to 512
  s390/jump label: use different nop instruction
  s390/jump label: add sanity checks
  s390/mm: correct missing space when reporting user process faults
  s390/dasd: cleanup profiling
  s390/dasd: add locking for global_profile access
  s390/ftrace: hotpatch support for function tracing
  ftrace: let notrace function attribute disable hotpatching if necessary
  ftrace: allow architectures to specify ftrace compile options
  s390: reintroduce diag 44 calls for cpu_relax()
  s390/zcrypt: Add support for new crypto express (CEX5S) adapter.
  s390/zcrypt: Number of supported ap domains is not retrievable.
  s390/spinlock: add compare-and-delay to lock wait loops
  s390/tape: remove redundant if statement
  s390/hvc_iucv: add simple wildcard matches to the iucv allow filter
  ...
parents 07f80d41 6a039eab
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Documentation/s390/Debugging390.txt
View file @ b3d6524f
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Makefile
View file @ b3d6524f
......@@ -726,10 +726,14 @@ KBUILD_CFLAGS += $(call cc-option, -femit-struct-debug-baseonly) \
endif
ifdef CONFIG_FUNCTION_TRACER
ifndef CC_FLAGS_FTRACE
CC_FLAGS_FTRACE := -pg
endif
export CC_FLAGS_FTRACE
ifdef CONFIG_HAVE_FENTRY
CC_USING_FENTRY := $(call cc-option, -mfentry -DCC_USING_FENTRY)
endif
KBUILD_CFLAGS += -pg $(CC_USING_FENTRY)
KBUILD_CFLAGS += $(CC_FLAGS_FTRACE) $(CC_USING_FENTRY)
KBUILD_AFLAGS += $(CC_USING_FENTRY)
ifdef CONFIG_DYNAMIC_FTRACE
ifdef CONFIG_HAVE_C_RECORDMCOUNT
......
arch/s390/Kconfig
View file @ b3d6524f
......@@ -66,6 +66,7 @@ config S390
select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
select ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS
select ARCH_HAS_GCOV_PROFILE_ALL
select ARCH_HAS_SG_CHAIN
select ARCH_HAVE_NMI_SAFE_CMPXCHG
select ARCH_INLINE_READ_LOCK
select ARCH_INLINE_READ_LOCK_BH
......@@ -116,7 +117,6 @@ config S390
select HAVE_BPF_JIT if 64BIT && PACK_STACK
select HAVE_CMPXCHG_DOUBLE
select HAVE_CMPXCHG_LOCAL
select HAVE_C_RECORDMCOUNT
select HAVE_DEBUG_KMEMLEAK
select HAVE_DYNAMIC_FTRACE if 64BIT
select HAVE_DYNAMIC_FTRACE_WITH_REGS if 64BIT
......@@ -151,7 +151,6 @@ config S390
select TTY
select VIRT_CPU_ACCOUNTING
select VIRT_TO_BUS
select ARCH_HAS_SG_CHAIN
config SCHED_OMIT_FRAME_POINTER
def_bool y
......@@ -185,6 +184,10 @@ config HAVE_MARCH_ZEC12_FEATURES
def_bool n
select HAVE_MARCH_Z196_FEATURES
config HAVE_MARCH_Z13_FEATURES
def_bool n
select HAVE_MARCH_ZEC12_FEATURES
choice
prompt "Processor type"
default MARCH_G5
......@@ -244,6 +247,14 @@ config MARCH_ZEC12
2827 series). The kernel will be slightly faster but will not work on
older machines.
config MARCH_Z13
bool "IBM z13"
select HAVE_MARCH_Z13_FEATURES if 64BIT
help
Select this to enable optimizations for IBM z13 (2964 series).
The kernel will be slightly faster but will not work on older
machines.
endchoice
config MARCH_G5_TUNE
......@@ -267,6 +278,9 @@ config MARCH_Z196_TUNE
config MARCH_ZEC12_TUNE
def_bool TUNE_ZEC12 || MARCH_ZEC12 && TUNE_DEFAULT
config MARCH_Z13_TUNE
def_bool TUNE_Z13 || MARCH_Z13 && TUNE_DEFAULT
choice
prompt "Tune code generation"
default TUNE_DEFAULT
......@@ -305,6 +319,9 @@ config TUNE_Z196
config TUNE_ZEC12
bool "IBM zBC12 and zEC12"
config TUNE_Z13
bool "IBM z13"
endchoice
config 64BIT
......@@ -356,14 +373,14 @@ config SMP
Even if you don't know what to do here, say Y.
config NR_CPUS
int "Maximum number of CPUs (2-256)"
range 2 256
int "Maximum number of CPUs (2-512)"
range 2 512
depends on SMP
default "32" if !64BIT
default "64" if 64BIT
help
This allows you to specify the maximum number of CPUs which this
kernel will support. The maximum supported value is 256 and the
kernel will support. The maximum supported value is 512 and the
minimum value which makes sense is 2.
This is purely to save memory - each supported CPU adds
......@@ -378,17 +395,26 @@ config HOTPLUG_CPU
can be controlled through /sys/devices/system/cpu/cpu#.
Say N if you want to disable CPU hotplug.
config SCHED_SMT
def_bool n
config SCHED_MC
def_bool n
config SCHED_BOOK
def_bool n
config SCHED_TOPOLOGY
def_bool y
prompt "Book scheduler support"
prompt "Topology scheduler support"
depends on SMP
select SCHED_SMT
select SCHED_MC
select SCHED_BOOK
help
Book scheduler support improves the CPU scheduler's decision making
when dealing with machines that have several books.
Topology scheduler support improves the CPU scheduler's decision
making when dealing with machines that have multi-threading,
multiple cores or multiple books.
source kernel/Kconfig.preempt
......
arch/s390/Makefile
View file @ b3d6524f
......@@ -42,6 +42,7 @@ mflags-$(CONFIG_MARCH_Z9_109) := -march=z9-109
mflags-$(CONFIG_MARCH_Z10) := -march=z10
mflags-$(CONFIG_MARCH_Z196) := -march=z196
mflags-$(CONFIG_MARCH_ZEC12) := -march=zEC12
mflags-$(CONFIG_MARCH_Z13) := -march=z13
aflags-y += $(mflags-y)
cflags-y += $(mflags-y)
......@@ -53,6 +54,7 @@ cflags-$(CONFIG_MARCH_Z9_109_TUNE) += -mtune=z9-109
cflags-$(CONFIG_MARCH_Z10_TUNE) += -mtune=z10
cflags-$(CONFIG_MARCH_Z196_TUNE) += -mtune=z196
cflags-$(CONFIG_MARCH_ZEC12_TUNE) += -mtune=zEC12
cflags-$(CONFIG_MARCH_Z13_TUNE) += -mtune=z13
#KBUILD_IMAGE is necessary for make rpm
KBUILD_IMAGE :=arch/s390/boot/image
......@@ -85,6 +87,16 @@ ifeq ($(call cc-option-yn,-mwarn-dynamicstack),y)
cflags-$(CONFIG_WARN_DYNAMIC_STACK) += -mwarn-dynamicstack
endif
ifdef CONFIG_FUNCTION_TRACER
# make use of hotpatch feature if the compiler supports it
cc_hotpatch := -mhotpatch=0,3
ifeq ($(call cc-option-yn,$(cc_hotpatch)),y)
CC_FLAGS_FTRACE := $(cc_hotpatch)
KBUILD_AFLAGS += -DCC_USING_HOTPATCH
KBUILD_CFLAGS += -DCC_USING_HOTPATCH
endif
endif
KBUILD_CFLAGS += -mbackchain -msoft-float $(cflags-y)
KBUILD_CFLAGS += -pipe -fno-strength-reduce -Wno-sign-compare
KBUILD_AFLAGS += $(aflags-y)
......
arch/s390/boot/compressed/misc.c
View file @ b3d6524f
......@@ -8,6 +8,7 @@
#include <asm/uaccess.h>
#include <asm/page.h>
#include <asm/sclp.h>
#include <asm/ipl.h>
#include "sizes.h"
......@@ -63,8 +64,6 @@ static unsigned long free_mem_end_ptr;
#include "../../../../lib/decompress_unxz.c"
#endif
extern _sclp_print_early(const char *);
static int puts(const char *s)
{
_sclp_print_early(s);
......
arch/s390/configs/default_defconfig
View file @ b3d6524f
......@@ -555,7 +555,6 @@ CONFIG_DEBUG_OBJECTS_RCU_HEAD=y
CONFIG_DEBUG_OBJECTS_PERCPU_COUNTER=y
CONFIG_SLUB_DEBUG_ON=y
CONFIG_SLUB_STATS=y
CONFIG_DEBUG_KMEMLEAK=y
CONFIG_DEBUG_STACK_USAGE=y
CONFIG_DEBUG_VM=y
CONFIG_DEBUG_VM_RB=y
......@@ -563,6 +562,7 @@ CONFIG_MEMORY_NOTIFIER_ERROR_INJECT=m
CONFIG_DEBUG_PER_CPU_MAPS=y
CONFIG_DEBUG_SHIRQ=y
CONFIG_DETECT_HUNG_TASK=y
CONFIG_PANIC_ON_OOPS=y
CONFIG_TIMER_STATS=y
CONFIG_DEBUG_RT_MUTEXES=y
CONFIG_DEBUG_WW_MUTEX_SLOWPATH=y
......
arch/s390/configs/gcov_defconfig
View file @ b3d6524f
......@@ -540,6 +540,7 @@ CONFIG_UNUSED_SYMBOLS=y
CONFIG_MAGIC_SYSRQ=y
CONFIG_DEBUG_KERNEL=y
CONFIG_MEMORY_NOTIFIER_ERROR_INJECT=m
CONFIG_PANIC_ON_OOPS=y
CONFIG_TIMER_STATS=y
CONFIG_RCU_TORTURE_TEST=m
CONFIG_RCU_CPU_STALL_TIMEOUT=60
......
arch/s390/configs/performance_defconfig
View file @ b3d6524f
......@@ -537,6 +537,7 @@ CONFIG_FRAME_WARN=1024
CONFIG_UNUSED_SYMBOLS=y
CONFIG_MAGIC_SYSRQ=y
CONFIG_DEBUG_KERNEL=y
CONFIG_PANIC_ON_OOPS=y
CONFIG_TIMER_STATS=y
CONFIG_RCU_TORTURE_TEST=m
CONFIG_RCU_CPU_STALL_TIMEOUT=60
......
arch/s390/configs/zfcpdump_defconfig
View file @ b3d6524f
......@@ -71,6 +71,7 @@ CONFIG_PRINTK_TIME=y
CONFIG_DEBUG_INFO=y
CONFIG_DEBUG_FS=y
CONFIG_DEBUG_KERNEL=y
CONFIG_PANIC_ON_OOPS=y
# CONFIG_SCHED_DEBUG is not set
CONFIG_RCU_CPU_STALL_TIMEOUT=60
# CONFIG_FTRACE is not set
......
arch/s390/crypto/aes_s390.c
View file @ b3d6524f
......@@ -134,7 +134,7 @@ static int aes_set_key(struct crypto_tfm *tfm, const u8 *in_key,
static void aes_encrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
{
const struct s390_aes_ctx *sctx = crypto_tfm_ctx(tfm);
struct s390_aes_ctx *sctx = crypto_tfm_ctx(tfm);
if (unlikely(need_fallback(sctx->key_len))) {
crypto_cipher_encrypt_one(sctx->fallback.cip, out, in);
......@@ -159,7 +159,7 @@ static void aes_encrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
static void aes_decrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
{
const struct s390_aes_ctx *sctx = crypto_tfm_ctx(tfm);
struct s390_aes_ctx *sctx = crypto_tfm_ctx(tfm);
if (unlikely(need_fallback(sctx->key_len))) {
crypto_cipher_decrypt_one(sctx->fallback.cip, out, in);
......
arch/s390/defconfig
View file @ b3d6524f
......@@ -14,7 +14,6 @@ CONFIG_IKCONFIG_PROC=y
CONFIG_CGROUPS=y
CONFIG_CPUSETS=y
CONFIG_CGROUP_CPUACCT=y
CONFIG_RESOURCE_COUNTERS=y
CONFIG_MEMCG=y
CONFIG_MEMCG_SWAP=y
CONFIG_CGROUP_SCHED=y
......@@ -22,12 +21,8 @@ CONFIG_RT_GROUP_SCHED=y
CONFIG_BLK_CGROUP=y
CONFIG_NAMESPACES=y
CONFIG_BLK_DEV_INITRD=y
CONFIG_RD_BZIP2=y
CONFIG_RD_LZMA=y
CONFIG_RD_XZ=y
CONFIG_RD_LZO=y
CONFIG_RD_LZ4=y
CONFIG_EXPERT=y
CONFIG_BPF_SYSCALL=y
# CONFIG_COMPAT_BRK is not set
CONFIG_PROFILING=y
CONFIG_OPROFILE=y
......
arch/s390/hypfs/Makefile
View file @ b3d6524f
......@@ -5,3 +5,4 @@
obj-$(CONFIG_S390_HYPFS_FS) += s390_hypfs.o
s390_hypfs-objs := inode.o hypfs_diag.o hypfs_vm.o hypfs_dbfs.o hypfs_sprp.o
s390_hypfs-objs += hypfs_diag0c.o
arch/s390/hypfs/hypfs.h
View file @ b3d6524f
......@@ -37,6 +37,10 @@ extern int hypfs_vm_init(void);
extern void hypfs_vm_exit(void);
extern int hypfs_vm_create_files(struct dentry *root);
/* VM diagnose 0c */
int hypfs_diag0c_init(void);
void hypfs_diag0c_exit(void);
/* Set Partition-Resource Parameter */
int hypfs_sprp_init(void);
void hypfs_sprp_exit(void);
......@@ -49,7 +53,6 @@ struct hypfs_dbfs_data {
void *buf_free_ptr;
size_t size;
struct hypfs_dbfs_file *dbfs_file;
struct kref kref;
};
struct hypfs_dbfs_file {
......@@ -61,8 +64,6 @@ struct hypfs_dbfs_file {
unsigned long);
/* Private data for hypfs_dbfs.c */
struct hypfs_dbfs_data *data;
struct delayed_work data_free_work;
struct mutex lock;
struct dentry *dentry;
};
......
arch/s390/hypfs/hypfs_dbfs.c
View file @ b3d6524f
......@@ -17,33 +17,16 @@ static struct hypfs_dbfs_data *hypfs_dbfs_data_alloc(struct hypfs_dbfs_file *f)
data = kmalloc(sizeof(*data), GFP_KERNEL);
if (!data)
return NULL;
kref_init(&data->kref);
data->dbfs_file = f;
return data;
}
static void hypfs_dbfs_data_free(struct kref *kref)
static void hypfs_dbfs_data_free(struct hypfs_dbfs_data *data)
{
struct hypfs_dbfs_data *data;
data = container_of(kref, struct hypfs_dbfs_data, kref);
data->dbfs_file->data_free(data->buf_free_ptr);
kfree(data);
}
static void data_free_delayed(struct work_struct *work)
{
struct hypfs_dbfs_data *data;
struct hypfs_dbfs_file *df;
df = container_of(work, struct hypfs_dbfs_file, data_free_work.work);
mutex_lock(&df->lock);
data = df->data;
df->data = NULL;
mutex_unlock(&df->lock);
kref_put(&data->kref, hypfs_dbfs_data_free);
}
static ssize_t dbfs_read(struct file *file, char __user *buf,
size_t size, loff_t *ppos)
{
......@@ -56,28 +39,21 @@ static ssize_t dbfs_read(struct file *file, char __user *buf,
df = file_inode(file)->i_private;
mutex_lock(&df->lock);
if (!df->data) {
data = hypfs_dbfs_data_alloc(df);
if (!data) {
mutex_unlock(&df->lock);
return -ENOMEM;
}
rc = df->data_create(&data->buf, &data->buf_free_ptr,
&data->size);
if (rc) {
mutex_unlock(&df->lock);
kfree(data);
return rc;
}
df->data = data;
schedule_delayed_work(&df->data_free_work, HZ);
data = hypfs_dbfs_data_alloc(df);
if (!data) {
mutex_unlock(&df->lock);
return -ENOMEM;
}
rc = df->data_create(&data->buf, &data->buf_free_ptr, &data->size);
if (rc) {
mutex_unlock(&df->lock);
kfree(data);
return rc;
}
data = df->data;
kref_get(&data->kref);
mutex_unlock(&df->lock);
rc = simple_read_from_buffer(buf, size, ppos, data->buf, data->size);
kref_put(&data->kref, hypfs_dbfs_data_free);
hypfs_dbfs_data_free(data);
return rc;
}
......@@ -108,7 +84,6 @@ int hypfs_dbfs_create_file(struct hypfs_dbfs_file *df)
if (IS_ERR(df->dentry))
return PTR_ERR(df->dentry);
mutex_init(&df->lock);
INIT_DELAYED_WORK(&df->data_free_work, data_free_delayed);
return 0;
}
......
arch/s390/hypfs/hypfs_diag0c.c 0 → 100644
View file @ b3d6524f
/*
* Hypervisor filesystem for Linux on s390
*
* Diag 0C implementation
*
* Copyright IBM Corp. 2014
*/
#include <linux/slab.h>
#include <linux/cpu.h>
#include <asm/hypfs.h>
#include "hypfs.h"
#define DBFS_D0C_HDR_VERSION 0
/*
* Execute diagnose 0c in 31 bit mode
*/
static void diag0c(struct hypfs_diag0c_entry *entry)
{
asm volatile (
#ifdef CONFIG_64BIT
" sam31\n"
" diag %0,%0,0x0c\n"
" sam64\n"
#else
" diag %0,%0,0x0c\n"
#endif
: /* no output register */
: "a" (entry)
: "memory");
}
/*
* Get hypfs_diag0c_entry from CPU vector and store diag0c data
*/
static void diag0c_fn(void *data)
{
diag0c(((void **) data)[smp_processor_id()]);
}
/*
* Allocate buffer and store diag 0c data
*/
static void *diag0c_store(unsigned int *count)
{
struct hypfs_diag0c_data *diag0c_data;
unsigned int cpu_count, cpu, i;
void **cpu_vec;
get_online_cpus();
cpu_count = num_online_cpus();
cpu_vec = kmalloc(sizeof(*cpu_vec) * num_possible_cpus(), GFP_KERNEL);
if (!cpu_vec)
goto fail_put_online_cpus;
/* Note: Diag 0c needs 8 byte alignment and real storage */
diag0c_data = kzalloc(sizeof(struct hypfs_diag0c_hdr) +
cpu_count * sizeof(struct hypfs_diag0c_entry),
GFP_KERNEL | GFP_DMA);
if (!diag0c_data)
goto fail_kfree_cpu_vec;
i = 0;
/* Fill CPU vector for each online CPU */
for_each_online_cpu(cpu) {
diag0c_data->entry[i].cpu = cpu;
cpu_vec[cpu] = &diag0c_data->entry[i++];
}
/* Collect data all CPUs */
on_each_cpu(diag0c_fn, cpu_vec, 1);
*count = cpu_count;
kfree(cpu_vec);
put_online_cpus();
return diag0c_data;
fail_kfree_cpu_vec:
kfree(cpu_vec);
fail_put_online_cpus:
put_online_cpus();
return ERR_PTR(-ENOMEM);
}
/*
* Hypfs DBFS callback: Free diag 0c data
*/
static void dbfs_diag0c_free(const void *data)
{
kfree(data);
}
/*
* Hypfs DBFS callback: Create diag 0c data
*/
static int dbfs_diag0c_create(void **data, void **data_free_ptr, size_t *size)
{
struct hypfs_diag0c_data *diag0c_data;
unsigned int count;
diag0c_data = diag0c_store(&count);
if (IS_ERR(diag0c_data))
return PTR_ERR(diag0c_data);
memset(&diag0c_data->hdr, 0, sizeof(diag0c_data->hdr));
get_tod_clock_ext(diag0c_data->hdr.tod_ext);
diag0c_data->hdr.len = count * sizeof(struct hypfs_diag0c_entry);
diag0c_data->hdr.version = DBFS_D0C_HDR_VERSION;
diag0c_data->hdr.count = count;
*data = diag0c_data;
*data_free_ptr = diag0c_data;
*size = diag0c_data->hdr.len + sizeof(struct hypfs_diag0c_hdr);
return 0;
}
/*
* Hypfs DBFS file structure
*/
static struct hypfs_dbfs_file dbfs_file_0c = {
.name = "diag_0c",
.data_create = dbfs_diag0c_create,
.data_free = dbfs_diag0c_free,
};
/*
* Initialize diag 0c interface for z/VM
*/
int __init hypfs_diag0c_init(void)
{
if (!MACHINE_IS_VM)
return 0;
return hypfs_dbfs_create_file(&dbfs_file_0c);
}
/*
* Shutdown diag 0c interface for z/VM
*/
void hypfs_diag0c_exit(void)
{
if (!MACHINE_IS_VM)
return;
hypfs_dbfs_remove_file(&dbfs_file_0c);
}
arch/s390/hypfs/inode.c
View file @ b3d6524f
......@@ -482,10 +482,14 @@ static int __init hypfs_init(void)
rc = -ENODATA;
goto fail_hypfs_vm_exit;
}
if (hypfs_diag0c_init()) {
rc = -ENODATA;
goto fail_hypfs_sprp_exit;
}
s390_kobj = kobject_create_and_add("s390", hypervisor_kobj);
if (!s390_kobj) {
rc = -ENOMEM;
goto fail_hypfs_sprp_exit;
goto fail_hypfs_diag0c_exit;
}
rc = register_filesystem(&hypfs_type);
if (rc)
......@@ -494,6 +498,8 @@ static int __init hypfs_init(void)
fail_filesystem:
kobject_put(s390_kobj);
fail_hypfs_diag0c_exit:
hypfs_diag0c_exit();
fail_hypfs_sprp_exit:
hypfs_sprp_exit();
fail_hypfs_vm_exit:
......@@ -510,6 +516,7 @@ static void __exit hypfs_exit(void)
{
unregister_filesystem(&hypfs_type);
kobject_put(s390_kobj);
hypfs_diag0c_exit();
hypfs_sprp_exit();
hypfs_vm_exit();
hypfs_diag_exit();
......
arch/s390/include/asm/cpu_mf.h
View file @ b3d6524f
......@@ -189,6 +189,20 @@ static inline int ecctr(u64 ctr, u64 *val)
return cc;
}
/* Store CPU counter multiple for the MT utilization counter set */
static inline int stcctm5(u64 num, u64 *val)
{
typedef struct { u64 _[num]; } addrtype;
int cc;
asm volatile (
" .insn rsy,0xeb0000000017,%2,5,%1\n"
" ipm %0\n"
" srl %0,28\n"
: "=d" (cc), "=Q" (*(addrtype *) val) : "d" (num) : "cc");
return cc;
}
/* Query sampling information */
static inline int qsi(struct hws_qsi_info_block *info)
{
......
arch/s390/include/asm/elf.h
View file @ b3d6524f
......@@ -163,8 +163,8 @@ extern unsigned int vdso_enabled;
the loader. We need to make sure that it is out of the way of the program
that it will "exec", and that there is sufficient room for the brk. */
extern unsigned long randomize_et_dyn(unsigned long base);
#define ELF_ET_DYN_BASE (randomize_et_dyn(STACK_TOP / 3 * 2))
extern unsigned long randomize_et_dyn(void);
#define ELF_ET_DYN_BASE randomize_et_dyn()
/* This yields a mask that user programs can use to figure out what
instruction set this CPU supports. */
......@@ -209,7 +209,9 @@ do { \
} while (0)
#endif /* CONFIG_COMPAT */
#define STACK_RND_MASK 0x7ffUL
extern unsigned long mmap_rnd_mask;
#define STACK_RND_MASK (mmap_rnd_mask)
#define ARCH_DLINFO \
do { \
......
arch/s390/include/asm/ftrace.h
View file @ b3d6524f
......@@ -3,8 +3,12 @@
#define ARCH_SUPPORTS_FTRACE_OPS 1
#ifdef CC_USING_HOTPATCH
#define MCOUNT_INSN_SIZE 6
#else
#define MCOUNT_INSN_SIZE 24
#define MCOUNT_RETURN_FIXUP 18
#endif
#ifndef __ASSEMBLY__
......@@ -37,17 +41,28 @@ struct ftrace_insn {
static inline void ftrace_generate_nop_insn(struct ftrace_insn *insn)
{
#ifdef CONFIG_FUNCTION_TRACER
#ifdef CC_USING_HOTPATCH
/* brcl 0,0 */
insn->opc = 0xc004;
insn->disp = 0;
#else
/* jg .+24 */
insn->opc = 0xc0f4;
insn->disp = MCOUNT_INSN_SIZE / 2;
#endif
#endif
}
static inline int is_ftrace_nop(struct ftrace_insn *insn)
{
#ifdef CONFIG_FUNCTION_TRACER
#ifdef CC_USING_HOTPATCH
if (insn->disp == 0)
return 1;
#else
if (insn->disp == MCOUNT_INSN_SIZE / 2)
return 1;
#endif
#endif
return 0;
}
......
arch/s390/include/asm/jump_label.h
View file @ b3d6524f
......@@ -4,6 +4,7 @@
#include <linux/types.h>
#define JUMP_LABEL_NOP_SIZE 6
#define JUMP_LABEL_NOP_OFFSET 2
#ifdef CONFIG_64BIT
#define ASM_PTR ".quad"
......@@ -13,9 +14,13 @@
#define ASM_ALIGN ".balign 4"
#endif
/*
* We use a brcl 0,2 instruction for jump labels at compile time so it
* can be easily distinguished from a hotpatch generated instruction.
*/
static __always_inline bool arch_static_branch(struct static_key *key)
{
asm_volatile_goto("0: brcl 0,0\n"
asm_volatile_goto("0: brcl 0,"__stringify(JUMP_LABEL_NOP_OFFSET)"\n"
".pushsection __jump_table, \"aw\"\n"
ASM_ALIGN "\n"
ASM_PTR " 0b, %l[label], %0\n"
......
arch/s390/include/asm/pgtable.h
View file @ b3d6524f
......@@ -1758,6 +1758,10 @@ extern int s390_enable_sie(void);
extern int s390_enable_skey(void);
extern void s390_reset_cmma(struct mm_struct *mm);
/* s390 has a private copy of get unmapped area to deal with cache synonyms */
#define HAVE_ARCH_UNMAPPED_AREA
#define HAVE_ARCH_UNMAPPED_AREA_TOPDOWN
/*
* No page table caches to initialise
*/
......
arch/s390/include/asm/processor.h
View file @ b3d6524f
......@@ -215,10 +215,7 @@ static inline unsigned short stap(void)
/*
* Give up the time slice of the virtual PU.
*/
static inline void cpu_relax(void)
{
barrier();
}
void cpu_relax(void);
#define cpu_relax_lowlatency() barrier()
......
arch/s390/include/asm/reset.h
View file @ b3d6524f
......@@ -15,5 +15,6 @@ struct reset_call {
extern void register_reset_call(struct reset_call *reset);
extern void unregister_reset_call(struct reset_call *reset);
extern void s390_reset_system(void (*func)(void *), void *data);
extern void s390_reset_system(void (*fn_pre)(void),
void (*fn_post)(void *), void *data);
#endif /* _ASM_S390_RESET_H */
arch/s390/include/asm/sclp.h
View file @ b3d6524f
......@@ -27,7 +27,7 @@ struct sclp_ipl_info {
};
struct sclp_cpu_entry {
u8 address;
u8 core_id;
u8 reserved0[2];
u8 : 3;
u8 siif : 1;
......@@ -51,6 +51,9 @@ int sclp_cpu_deconfigure(u8 cpu);
unsigned long long sclp_get_rnmax(void);
unsigned long long sclp_get_rzm(void);
unsigned int sclp_get_max_cpu(void);
unsigned int sclp_get_mtid(u8 cpu_type);
unsigned int sclp_get_mtid_max(void);
unsigned int sclp_get_mtid_prev(void);
int sclp_sdias_blk_count(void);
int sclp_sdias_copy(void *dest, int blk_num, int nr_blks);
int sclp_chp_configure(struct chp_id chpid);
......@@ -68,4 +71,6 @@ void sclp_early_detect(void);
int sclp_has_siif(void);
unsigned int sclp_get_ibc(void);
long _sclp_print_early(const char *);
#endif /* _ASM_S390_SCLP_H */
arch/s390/include/asm/setup.h
View file @ b3d6524f
......@@ -57,6 +57,7 @@ extern void detect_memory_memblock(void);
#define MACHINE_FLAG_TE (1UL << 15)
#define MACHINE_FLAG_TLB_LC (1UL << 17)
#define MACHINE_FLAG_VX (1UL << 18)
#define MACHINE_FLAG_CAD (1UL << 19)
#define MACHINE_IS_VM (S390_lowcore.machine_flags & MACHINE_FLAG_VM)
#define MACHINE_IS_KVM (S390_lowcore.machine_flags & MACHINE_FLAG_KVM)
......@@ -80,6 +81,7 @@ extern void detect_memory_memblock(void);
#define MACHINE_HAS_TE (0)
#define MACHINE_HAS_TLB_LC (0)
#define MACHINE_HAS_VX (0)
#define MACHINE_HAS_CAD (0)
#else /* CONFIG_64BIT */
#define MACHINE_HAS_IEEE (1)
#define MACHINE_HAS_CSP (1)
......@@ -93,6 +95,7 @@ extern void detect_memory_memblock(void);
#define MACHINE_HAS_TE (S390_lowcore.machine_flags & MACHINE_FLAG_TE)
#define MACHINE_HAS_TLB_LC (S390_lowcore.machine_flags & MACHINE_FLAG_TLB_LC)
#define MACHINE_HAS_VX (S390_lowcore.machine_flags & MACHINE_FLAG_VX)
#define MACHINE_HAS_CAD (S390_lowcore.machine_flags & MACHINE_FLAG_CAD)
#endif /* CONFIG_64BIT */
/*
......
arch/s390/include/asm/sigp.h
View file @ b3d6524f
......@@ -16,6 +16,7 @@
#define SIGP_SET_ARCHITECTURE 18
#define SIGP_COND_EMERGENCY_SIGNAL 19
#define SIGP_SENSE_RUNNING 21
#define SIGP_SET_MULTI_THREADING 22
#define SIGP_STORE_ADDITIONAL_STATUS 23
/* SIGP condition codes */
......
arch/s390/include/asm/smp.h
View file @ b3d6524f
......@@ -16,6 +16,8 @@
#define raw_smp_processor_id() (S390_lowcore.cpu_nr)
extern struct mutex smp_cpu_state_mutex;
extern unsigned int smp_cpu_mt_shift;
extern unsigned int smp_cpu_mtid;
extern int __cpu_up(unsigned int cpu, struct task_struct *tidle);
......@@ -35,6 +37,8 @@ extern void smp_fill_possible_mask(void);
#else /* CONFIG_SMP */
#define smp_cpu_mtid 0
static inline void smp_call_ipl_cpu(void (*func)(void *), void *data)
{
func(data);
......
arch/s390/include/asm/sysinfo.h
View file @ b3d6524f
......@@ -90,7 +90,11 @@ struct sysinfo_2_2_2 {
unsigned short cpus_reserved;
char name[8];
unsigned int caf;
char reserved_2[16];
char reserved_2[8];
unsigned char mt_installed;
unsigned char mt_general;
unsigned char mt_psmtid;
char reserved_3[5];
unsigned short cpus_dedicated;
unsigned short cpus_shared;
};
......@@ -120,26 +124,28 @@ struct sysinfo_3_2_2 {
extern int topology_max_mnest;
#define TOPOLOGY_CPU_BITS 64
#define TOPOLOGY_CORE_BITS 64
#define TOPOLOGY_NR_MAG 6
struct topology_cpu {
unsigned char reserved0[4];
struct topology_core {
unsigned char nl;
unsigned char reserved0[3];
unsigned char :6;
unsigned char pp:2;
unsigned char reserved1;
unsigned short origin;
unsigned long mask[TOPOLOGY_CPU_BITS / BITS_PER_LONG];
unsigned long mask[TOPOLOGY_CORE_BITS / BITS_PER_LONG];
};
struct topology_container {
unsigned char reserved[7];
unsigned char nl;
unsigned char reserved[6];
unsigned char id;
};
union topology_entry {
unsigned char nl;
struct topology_cpu cpu;
struct topology_core cpu;
struct topology_container container;
};
......
arch/s390/include/asm/topology.h
View file @ b3d6524f
......@@ -9,9 +9,11 @@ struct cpu;
#ifdef CONFIG_SCHED_BOOK
struct cpu_topology_s390 {
unsigned short thread_id;
unsigned short core_id;
unsigned short socket_id;
unsigned short book_id;
cpumask_t thread_mask;
cpumask_t core_mask;
cpumask_t book_mask;
};
......@@ -19,6 +21,8 @@ struct cpu_topology_s390 {
extern struct cpu_topology_s390 cpu_topology[NR_CPUS];
#define topology_physical_package_id(cpu) (cpu_topology[cpu].socket_id)
#define topology_thread_id(cpu) (cpu_topology[cpu].thread_id)
#define topology_thread_cpumask(cpu) (&cpu_topology[cpu].thread_mask)
#define topology_core_id(cpu) (cpu_topology[cpu].core_id)
#define topology_core_cpumask(cpu) (&cpu_topology[cpu].core_mask)
#define topology_book_id(cpu) (cpu_topology[cpu].book_id)
......
arch/s390/include/uapi/asm/hypfs.h
View file @ b3d6524f
/*
* IOCTL interface for hypfs
* Structures for hypfs interface
*
* Copyright IBM Corp. 2013
*
* Author: Martin Schwidefsky <schwidefsky@de.ibm.com>
*/
#ifndef _ASM_HYPFS_CTL_H
#define _ASM_HYPFS_CTL_H
#ifndef _ASM_HYPFS_H
#define _ASM_HYPFS_H
#include <linux/types.h>
/*
* IOCTL for binary interface /sys/kernel/debug/diag_304
*/
struct hypfs_diag304 {
__u32 args[2];
__u64 data;
......@@ -22,4 +25,30 @@ struct hypfs_diag304 {
#define HYPFS_DIAG304 \
_IOWR(HYPFS_IOCTL_MAGIC, 0x20, struct hypfs_diag304)
/*
* Structures for binary interface /sys/kernel/debug/diag_0c
*/
struct hypfs_diag0c_hdr {
__u64 len; /* Length of diag0c buffer without header */
__u16 version; /* Version of header */
char reserved1[6]; /* Reserved */
char tod_ext[16]; /* TOD clock for diag0c */
__u64 count; /* Number of entries (CPUs) in diag0c array */
char reserved2[24]; /* Reserved */
};
struct hypfs_diag0c_entry {
char date[8]; /* MM/DD/YY in EBCDIC */
char time[8]; /* HH:MM:SS in EBCDIC */
__u64 virtcpu; /* Virtual time consumed by the virt CPU (us) */
__u64 totalproc; /* Total of virtual and simulation time (us) */
__u32 cpu; /* Linux logical CPU number */
__u32 reserved; /* Align to 8 byte */
};
struct hypfs_diag0c_data {
struct hypfs_diag0c_hdr hdr; /* 64 byte header */
struct hypfs_diag0c_entry entry[]; /* diag0c entry array */
};
#endif
arch/s390/kernel/Makefile
View file @ b3d6524f
......@@ -4,8 +4,8 @@
ifdef CONFIG_FUNCTION_TRACER
# Don't trace early setup code and tracing code
CFLAGS_REMOVE_early.o = -pg
CFLAGS_REMOVE_ftrace.o = -pg
CFLAGS_REMOVE_early.o = $(CC_FLAGS_FTRACE)
CFLAGS_REMOVE_ftrace.o = $(CC_FLAGS_FTRACE)
endif
#
......
arch/s390/kernel/base.S
View file @ b3d6524f
......@@ -97,7 +97,8 @@ ENTRY(diag308_reset)
lg %r4,0(%r4) # Save PSW
sturg %r4,%r3 # Use sturg, because of large pages
lghi %r1,1
diag %r1,%r1,0x308
lghi %r0,0
diag %r0,%r1,0x308
.Lrestart_part2:
lhi %r0,0 # Load r0 with zero
lhi %r1,2 # Use mode 2 = ESAME (dump)
......
arch/s390/kernel/cache.c
View file @ b3d6524f
This diff is collapsed.
arch/s390/kernel/dis.c
View file @ b3d6524f
......@@ -137,7 +137,7 @@ enum {
INSTR_RSI_RRP,
INSTR_RSL_LRDFU, INSTR_RSL_R0RD,
INSTR_RSY_AARD, INSTR_RSY_CCRD, INSTR_RSY_RRRD, INSTR_RSY_RURD,
INSTR_RSY_RDRM,
INSTR_RSY_RDRM, INSTR_RSY_RMRD,
INSTR_RS_AARD, INSTR_RS_CCRD, INSTR_RS_R0RD, INSTR_RS_RRRD,
INSTR_RS_RURD,
INSTR_RXE_FRRD, INSTR_RXE_RRRD, INSTR_RXE_RRRDM,
......@@ -226,7 +226,6 @@ static const struct s390_operand operands[] =
[U16_32] = { 16, 32, 0 },
[J16_16] = { 16, 16, OPERAND_PCREL },
[J16_32] = { 16, 32, OPERAND_PCREL },
[I16_32] = { 16, 32, OPERAND_SIGNED },
[I24_24] = { 24, 24, OPERAND_SIGNED },
[J32_16] = { 32, 16, OPERAND_PCREL },
[I32_16] = { 32, 16, OPERAND_SIGNED },
......@@ -308,6 +307,7 @@ static const unsigned char formats[][7] = {
[INSTR_RSY_AARD] = { 0xff, A_8,A_12,D20_20,B_16,0,0 },
[INSTR_RSY_CCRD] = { 0xff, C_8,C_12,D20_20,B_16,0,0 },
[INSTR_RSY_RDRM] = { 0xff, R_8,D20_20,B_16,U4_12,0,0 },
[INSTR_RSY_RMRD] = { 0xff, R_8,U4_12,D20_20,B_16,0,0 },
[INSTR_RSY_RRRD] = { 0xff, R_8,R_12,D20_20,B_16,0,0 },
[INSTR_RSY_RURD] = { 0xff, R_8,U4_12,D20_20,B_16,0,0 },
[INSTR_RS_AARD] = { 0xff, A_8,A_12,D_20,B_16,0,0 },
......@@ -451,7 +451,8 @@ enum {
LONG_INSN_VERLLV,
LONG_INSN_VESRAV,
LONG_INSN_VESRLV,
LONG_INSN_VSBCBI
LONG_INSN_VSBCBI,
LONG_INSN_STCCTM
};
static char *long_insn_name[] = {
......@@ -531,6 +532,7 @@ static char *long_insn_name[] = {
[LONG_INSN_VESRAV] = "vesrav",
[LONG_INSN_VESRLV] = "vesrlv",
[LONG_INSN_VSBCBI] = "vsbcbi",
[LONG_INSN_STCCTM] = "stcctm",
};
static struct s390_insn opcode[] = {
......@@ -1656,6 +1658,7 @@ static struct s390_insn opcode_eb[] = {
{ "lric", 0x60, INSTR_RSY_RDRM },
{ "stric", 0x61, INSTR_RSY_RDRM },
{ "mric", 0x62, INSTR_RSY_RDRM },
{ { 0, LONG_INSN_STCCTM }, 0x17, INSTR_RSY_RMRD },
#endif
{ "rll", 0x1d, INSTR_RSY_RRRD },
{ "mvclu", 0x8e, INSTR_RSY_RRRD },
......
arch/s390/kernel/early.c
View file @ b3d6524f
......@@ -393,9 +393,27 @@ static __init void detect_machine_facilities(void)
S390_lowcore.machine_flags |= MACHINE_FLAG_TLB_LC;
if (test_facility(129))
S390_lowcore.machine_flags |= MACHINE_FLAG_VX;
if (test_facility(128))
S390_lowcore.machine_flags |= MACHINE_FLAG_CAD;
#endif
}
static int __init nocad_setup(char *str)
{
S390_lowcore.machine_flags &= ~MACHINE_FLAG_CAD;
return 0;
}
early_param("nocad", nocad_setup);
static int __init cad_init(void)
{
if (MACHINE_HAS_CAD)
/* Enable problem state CAD. */
__ctl_set_bit(2, 3);
return 0;
}
early_initcall(cad_init);
static __init void rescue_initrd(void)
{
#ifdef CONFIG_BLK_DEV_INITRD
......
arch/s390/kernel/entry.h
View file @ b3d6524f
......@@ -71,9 +71,11 @@ struct s390_mmap_arg_struct;
struct fadvise64_64_args;
struct old_sigaction;
long sys_rt_sigreturn(void);
long sys_sigreturn(void);
long sys_s390_personality(unsigned int personality);
long sys_s390_runtime_instr(int command, int signum);
long sys_s390_pci_mmio_write(unsigned long, const void __user *, size_t);
long sys_s390_pci_mmio_read(unsigned long, void __user *, size_t);
#endif /* _ENTRY_H */
arch/s390/kernel/ftrace.c
View file @ b3d6524f
......@@ -46,6 +46,13 @@
* lg %r14,8(%r15) # offset 18
* The jg instruction branches to offset 24 to skip as many instructions
* as possible.
* In case we use gcc's hotpatch feature the original and also the disabled
* function prologue contains only a single six byte instruction and looks
* like this:
* > brcl 0,0 # offset 0
* To enable ftrace the code gets patched like above and afterwards looks
* like this:
* > brasl %r0,ftrace_caller # offset 0
*/
unsigned long ftrace_plt;
......@@ -59,62 +66,71 @@ int ftrace_modify_call(struct dyn_ftrace *rec, unsigned long old_addr,
int ftrace_make_nop(struct module *mod, struct dyn_ftrace *rec,
unsigned long addr)
{
struct ftrace_insn insn;
unsigned short op;
void *from, *to;
size_t size;
ftrace_generate_nop_insn(&insn);
size = sizeof(insn);
from = &insn;
to = (void *) rec->ip;
if (probe_kernel_read(&op, (void *) rec->ip, sizeof(op)))
struct ftrace_insn orig, new, old;
if (probe_kernel_read(&old, (void *) rec->ip, sizeof(old)))
return -EFAULT;
/*
* If we find a breakpoint instruction, a kprobe has been placed
* at the beginning of the function. We write the constant
* KPROBE_ON_FTRACE_NOP into the remaining four bytes of the original
* instruction so that the kprobes handler can execute a nop, if it
* reaches this breakpoint.
*/
if (op == BREAKPOINT_INSTRUCTION) {
size -= 2;
from += 2;
to += 2;
insn.disp = KPROBE_ON_FTRACE_NOP;
if (addr == MCOUNT_ADDR) {
/* Initial code replacement */
#ifdef CC_USING_HOTPATCH
/* We expect to see brcl 0,0 */
ftrace_generate_nop_insn(&orig);
#else
/* We expect to see stg r14,8(r15) */
orig.opc = 0xe3e0;
orig.disp = 0xf0080024;
#endif
ftrace_generate_nop_insn(&new);
} else if (old.opc == BREAKPOINT_INSTRUCTION) {
/*
* If we find a breakpoint instruction, a kprobe has been
* placed at the beginning of the function. We write the
* constant KPROBE_ON_FTRACE_NOP into the remaining four
* bytes of the original instruction so that the kprobes
* handler can execute a nop, if it reaches this breakpoint.
*/
new.opc = orig.opc = BREAKPOINT_INSTRUCTION;
orig.disp = KPROBE_ON_FTRACE_CALL;
new.disp = KPROBE_ON_FTRACE_NOP;
} else {
/* Replace ftrace call with a nop. */
ftrace_generate_call_insn(&orig, rec->ip);
ftrace_generate_nop_insn(&new);
}
if (probe_kernel_write(to, from, size))
/* Verify that the to be replaced code matches what we expect. */
if (memcmp(&orig, &old, sizeof(old)))
return -EINVAL;
if (probe_kernel_write((void *) rec->ip, &new, sizeof(new)))
return -EPERM;
return 0;
}
int ftrace_make_call(struct dyn_ftrace *rec, unsigned long addr)
{
struct ftrace_insn insn;
unsigned short op;
void *from, *to;
size_t size;
ftrace_generate_call_insn(&insn, rec->ip);
size = sizeof(insn);
from = &insn;
to = (void *) rec->ip;
if (probe_kernel_read(&op, (void *) rec->ip, sizeof(op)))
struct ftrace_insn orig, new, old;
if (probe_kernel_read(&old, (void *) rec->ip, sizeof(old)))
return -EFAULT;
/*
* If we find a breakpoint instruction, a kprobe has been placed
* at the beginning of the function. We write the constant
* KPROBE_ON_FTRACE_CALL into the remaining four bytes of the original
* instruction so that the kprobes handler can execute a brasl if it
* reaches this breakpoint.
*/
if (op == BREAKPOINT_INSTRUCTION) {
size -= 2;
from += 2;
to += 2;
insn.disp = KPROBE_ON_FTRACE_CALL;
if (old.opc == BREAKPOINT_INSTRUCTION) {
/*
* If we find a breakpoint instruction, a kprobe has been
* placed at the beginning of the function. We write the
* constant KPROBE_ON_FTRACE_CALL into the remaining four
* bytes of the original instruction so that the kprobes
* handler can execute a brasl if it reaches this breakpoint.
*/
new.opc = orig.opc = BREAKPOINT_INSTRUCTION;
orig.disp = KPROBE_ON_FTRACE_NOP;
new.disp = KPROBE_ON_FTRACE_CALL;
} else {
/* Replace nop with an ftrace call. */
ftrace_generate_nop_insn(&orig);
ftrace_generate_call_insn(&new, rec->ip);
}
if (probe_kernel_write(to, from, size))
/* Verify that the to be replaced code matches what we expect. */
if (memcmp(&orig, &old, sizeof(old)))
return -EINVAL;
if (probe_kernel_write((void *) rec->ip, &new, sizeof(new)))
return -EPERM;
return 0;
}
......
arch/s390/kernel/head.S
View file @ b3d6524f
......@@ -436,7 +436,9 @@ ENTRY(startup_kdump)
# followed by the facility words.
#if defined(CONFIG_64BIT)
#if defined(CONFIG_MARCH_ZEC12)
#if defined(CONFIG_MARCH_Z13)
.long 3, 0xc100eff2, 0xf46ce800, 0x00400000
#elif defined(CONFIG_MARCH_ZEC12)
.long 3, 0xc100eff2, 0xf46ce800, 0x00400000
#elif defined(CONFIG_MARCH_Z196)
.long 2, 0xc100eff2, 0xf46c0000
......
arch/s390/kernel/ipl.c
View file @ b3d6524f
......@@ -2074,7 +2074,8 @@ static void do_reset_calls(void)
u32 dump_prefix_page;
void s390_reset_system(void (*func)(void *), void *data)
void s390_reset_system(void (*fn_pre)(void),
void (*fn_post)(void *), void *data)
{
struct _lowcore *lc;
......@@ -2112,7 +2113,11 @@ void s390_reset_system(void (*func)(void *), void *data)
/* Store status at absolute zero */
store_status();
/* Call function before reset */
if (fn_pre)
fn_pre();
do_reset_calls();
if (func)
func(data);
/* Call function after reset */
if (fn_post)
fn_post(data);
}
arch/s390/kernel/jump_label.c
View file @ b3d6524f
......@@ -22,31 +22,66 @@ struct insn_args {
enum jump_label_type type;
};
static void jump_label_make_nop(struct jump_entry *entry, struct insn *insn)
{
/* brcl 0,0 */
insn->opcode = 0xc004;
insn->offset = 0;
}
static void jump_label_make_branch(struct jump_entry *entry, struct insn *insn)
{
/* brcl 15,offset */
insn->opcode = 0xc0f4;
insn->offset = (entry->target - entry->code) >> 1;
}
static void jump_label_bug(struct jump_entry *entry, struct insn *insn)
{
unsigned char *ipc = (unsigned char *)entry->code;
unsigned char *ipe = (unsigned char *)insn;
pr_emerg("Jump label code mismatch at %pS [%p]\n", ipc, ipc);
pr_emerg("Found: %02x %02x %02x %02x %02x %02x\n",
ipc[0], ipc[1], ipc[2], ipc[3], ipc[4], ipc[5]);
pr_emerg("Expected: %02x %02x %02x %02x %02x %02x\n",
ipe[0], ipe[1], ipe[2], ipe[3], ipe[4], ipe[5]);
panic("Corrupted kernel text");
}
static struct insn orignop = {
.opcode = 0xc004,
.offset = JUMP_LABEL_NOP_OFFSET >> 1,
};
static void __jump_label_transform(struct jump_entry *entry,
enum jump_label_type type)
enum jump_label_type type,
int init)
{
struct insn insn;
int rc;
struct insn old, new;
if (type == JUMP_LABEL_ENABLE) {
/* brcl 15,offset */
insn.opcode = 0xc0f4;
insn.offset = (entry->target - entry->code) >> 1;
jump_label_make_nop(entry, &old);
jump_label_make_branch(entry, &new);
} else {
/* brcl 0,0 */
insn.opcode = 0xc004;
insn.offset = 0;
jump_label_make_branch(entry, &old);
jump_label_make_nop(entry, &new);
}
rc = probe_kernel_write((void *)entry->code, &insn, JUMP_LABEL_NOP_SIZE);
WARN_ON_ONCE(rc < 0);
if (init) {
if (memcmp((void *)entry->code, &orignop, sizeof(orignop)))
jump_label_bug(entry, &old);
} else {
if (memcmp((void *)entry->code, &old, sizeof(old)))
jump_label_bug(entry, &old);
}
probe_kernel_write((void *)entry->code, &new, sizeof(new));
}
static int __sm_arch_jump_label_transform(void *data)
{
struct insn_args *args = data;
__jump_label_transform(args->entry, args->type);
__jump_label_transform(args->entry, args->type, 0);
return 0;
}
......@@ -64,7 +99,7 @@ void arch_jump_label_transform(struct jump_entry *entry,
void arch_jump_label_transform_static(struct jump_entry *entry,
enum jump_label_type type)
{
__jump_label_transform(entry, type);
__jump_label_transform(entry, type, 1);
}
#endif
arch/s390/kernel/kprobes.c
View file @ b3d6524f
......@@ -69,7 +69,8 @@ static void copy_instruction(struct kprobe *p)
/*
* If kprobes patches the instruction that is morphed by
* ftrace make sure that kprobes always sees the branch
* "jg .+24" that skips the mcount block
* "jg .+24" that skips the mcount block or the "brcl 0,0"
* in case of hotpatch.
*/
ftrace_generate_nop_insn((struct ftrace_insn *)p->ainsn.insn);
p->ainsn.is_ftrace_insn = 1;
......
arch/s390/kernel/machine_kexec.c
View file @ b3d6524f
......@@ -103,21 +103,18 @@ static int __init machine_kdump_pm_init(void)
return 0;
}
arch_initcall(machine_kdump_pm_init);
#endif
/*
* Start kdump: We expect here that a store status has been done on our CPU
*/
static void __do_machine_kdump(void *image)
{
#ifdef CONFIG_CRASH_DUMP
int (*start_kdump)(int) = (void *)((struct kimage *) image)->start;
setup_regs();
__load_psw_mask(PSW_MASK_BASE | PSW_DEFAULT_KEY | PSW_MASK_EA | PSW_MASK_BA);
start_kdump(1);
#endif
}
#endif
/*
* Check if kdump checksums are valid: We call purgatory with parameter "0"
......@@ -249,18 +246,18 @@ static void __do_machine_kexec(void *data)
*/
static void __machine_kexec(void *data)
{
struct kimage *image = data;
__arch_local_irq_stosm(0x04); /* enable DAT */
pfault_fini();
tracing_off();
debug_locks_off();
if (image->type == KEXEC_TYPE_CRASH) {
#ifdef CONFIG_CRASH_DUMP
if (((struct kimage *) data)->type == KEXEC_TYPE_CRASH) {
lgr_info_log();
s390_reset_system(__do_machine_kdump, data);
} else {
s390_reset_system(__do_machine_kexec, data);
}
s390_reset_system(setup_regs, __do_machine_kdump, data);
} else
#endif
s390_reset_system(NULL, __do_machine_kexec, data);
disabled_wait((unsigned long) __builtin_return_address(0));
}
......
arch/s390/kernel/mcount.S
View file @ b3d6524f
......@@ -27,7 +27,9 @@ ENTRY(ftrace_caller)
.globl ftrace_regs_caller
.set ftrace_regs_caller,ftrace_caller
lgr %r1,%r15
#ifndef CC_USING_HOTPATCH
aghi %r0,MCOUNT_RETURN_FIXUP
#endif
aghi %r15,-STACK_FRAME_SIZE
stg %r1,__SF_BACKCHAIN(%r15)
stg %r1,(STACK_PTREGS_GPRS+15*8)(%r15)
......
arch/s390/kernel/process.c
View file @ b3d6524f
......@@ -79,6 +79,14 @@ void release_thread(struct task_struct *dead_task)
{
}
#ifdef CONFIG_64BIT
void arch_release_task_struct(struct task_struct *tsk)
{
if (tsk->thread.vxrs)
kfree(tsk->thread.vxrs);
}
#endif
int copy_thread(unsigned long clone_flags, unsigned long new_stackp,
unsigned long arg, struct task_struct *p)
{
......@@ -243,13 +251,3 @@ unsigned long arch_randomize_brk(struct mm_struct *mm)
ret = PAGE_ALIGN(mm->brk + brk_rnd());
return (ret > mm->brk) ? ret : mm->brk;
}
unsigned long randomize_et_dyn(unsigned long base)
{
unsigned long ret;
if (!(current->flags & PF_RANDOMIZE))
return base;
ret = PAGE_ALIGN(base + brk_rnd());
return (ret > base) ? ret : base;
}
arch/s390/kernel/processor.c
View file @ b3d6524f
......@@ -8,16 +8,24 @@
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/smp.h>
#include <linux/seq_file.h>
#include <linux/delay.h>
#include <linux/cpu.h>
#include <asm/elf.h>
#include <asm/lowcore.h>
#include <asm/param.h>
#include <asm/smp.h>
static DEFINE_PER_CPU(struct cpuid, cpu_id);
void cpu_relax(void)
{
if (!smp_cpu_mtid && MACHINE_HAS_DIAG44)
asm volatile("diag 0,0,0x44");
barrier();
}
EXPORT_SYMBOL(cpu_relax);
/*
* cpu_init - initializes state that is per-CPU.
*/
......
arch/s390/kernel/sclp.S
View file @ b3d6524f
......@@ -294,7 +294,8 @@ ENTRY(_sclp_print_early)
#ifdef CONFIG_64BIT
tm LC_AR_MODE_ID,1
jno .Lesa3
lmh %r6,%r15,96(%r15) # store upper register halves
lgfr %r2,%r2 # sign extend return value
lmh %r6,%r15,96(%r15) # restore upper register halves
ahi %r15,80
.Lesa3:
#endif
......
arch/s390/kernel/setup.c
View file @ b3d6524f
......@@ -810,6 +810,9 @@ static void __init setup_hwcaps(void)
case 0x2828:
strcpy(elf_platform, "zEC12");
break;
case 0x2964:
strcpy(elf_platform, "z13");
break;
}
}
......
arch/s390/kernel/smp.c
View file @ b3d6524f
This diff is collapsed.
arch/s390/kernel/sysinfo.c
View file @ b3d6524f
......@@ -194,6 +194,14 @@ static void stsi_2_2_2(struct seq_file *m, struct sysinfo_2_2_2 *info)
seq_printf(m, "LPAR CPUs Reserved: %d\n", info->cpus_reserved);
seq_printf(m, "LPAR CPUs Dedicated: %d\n", info->cpus_dedicated);
seq_printf(m, "LPAR CPUs Shared: %d\n", info->cpus_shared);
if (info->mt_installed & 0x80) {
seq_printf(m, "LPAR CPUs G-MTID: %d\n",
info->mt_general & 0x1f);
seq_printf(m, "LPAR CPUs S-MTID: %d\n",
info->mt_installed & 0x1f);
seq_printf(m, "LPAR CPUs PS-MTID: %d\n",
info->mt_psmtid & 0x1f);
}
}
static void stsi_3_2_2(struct seq_file *m, struct sysinfo_3_2_2 *info)
......
arch/s390/kernel/topology.c
View file @ b3d6524f
......@@ -59,32 +59,50 @@ static cpumask_t cpu_group_map(struct mask_info *info, unsigned int cpu)
return mask;
}
static struct mask_info *add_cpus_to_mask(struct topology_cpu *tl_cpu,
static cpumask_t cpu_thread_map(unsigned int cpu)
{
cpumask_t mask;
int i;
cpumask_copy(&mask, cpumask_of(cpu));
if (!topology_enabled || !MACHINE_HAS_TOPOLOGY)
return mask;
cpu -= cpu % (smp_cpu_mtid + 1);
for (i = 0; i <= smp_cpu_mtid; i++)
if (cpu_present(cpu + i))
cpumask_set_cpu(cpu + i, &mask);
return mask;
}
static struct mask_info *add_cpus_to_mask(struct topology_core *tl_core,
struct mask_info *book,
struct mask_info *socket,
int one_socket_per_cpu)
{
unsigned int cpu;
unsigned int core;
for_each_set_bit(cpu, &tl_cpu->mask[0], TOPOLOGY_CPU_BITS) {
unsigned int rcpu;
int lcpu;
for_each_set_bit(core, &tl_core->mask[0], TOPOLOGY_CORE_BITS) {
unsigned int rcore;
int lcpu, i;
rcpu = TOPOLOGY_CPU_BITS - 1 - cpu + tl_cpu->origin;
lcpu = smp_find_processor_id(rcpu);
rcore = TOPOLOGY_CORE_BITS - 1 - core + tl_core->origin;
lcpu = smp_find_processor_id(rcore << smp_cpu_mt_shift);
if (lcpu < 0)
continue;
cpumask_set_cpu(lcpu, &book->mask);
cpu_topology[lcpu].book_id = book->id;
cpumask_set_cpu(lcpu, &socket->mask);
cpu_topology[lcpu].core_id = rcpu;
if (one_socket_per_cpu) {
cpu_topology[lcpu].socket_id = rcpu;
socket = socket->next;
} else {
cpu_topology[lcpu].socket_id = socket->id;
for (i = 0; i <= smp_cpu_mtid; i++) {
cpu_topology[lcpu + i].book_id = book->id;
cpu_topology[lcpu + i].core_id = rcore;
cpu_topology[lcpu + i].thread_id = lcpu + i;
cpumask_set_cpu(lcpu + i, &book->mask);
cpumask_set_cpu(lcpu + i, &socket->mask);
if (one_socket_per_cpu)
cpu_topology[lcpu + i].socket_id = rcore;
else
cpu_topology[lcpu + i].socket_id = socket->id;
smp_cpu_set_polarization(lcpu + i, tl_core->pp);
}
smp_cpu_set_polarization(lcpu, tl_cpu->pp);
if (one_socket_per_cpu)
socket = socket->next;
}
return socket;
}
......@@ -108,7 +126,7 @@ static void clear_masks(void)
static union topology_entry *next_tle(union topology_entry *tle)
{
if (!tle->nl)
return (union topology_entry *)((struct topology_cpu *)tle + 1);
return (union topology_entry *)((struct topology_core *)tle + 1);
return (union topology_entry *)((struct topology_container *)tle + 1);
}
......@@ -231,9 +249,11 @@ static void update_cpu_masks(void)
spin_lock_irqsave(&topology_lock, flags);
for_each_possible_cpu(cpu) {
cpu_topology[cpu].thread_mask = cpu_thread_map(cpu);
cpu_topology[cpu].core_mask = cpu_group_map(&socket_info, cpu);
cpu_topology[cpu].book_mask = cpu_group_map(&book_info, cpu);
if (!MACHINE_HAS_TOPOLOGY) {
cpu_topology[cpu].thread_id = cpu;
cpu_topology[cpu].core_id = cpu;
cpu_topology[cpu].socket_id = cpu;
cpu_topology[cpu].book_id = cpu;
......@@ -445,6 +465,12 @@ int topology_cpu_init(struct cpu *cpu)
return sysfs_create_group(&cpu->dev.kobj, &topology_cpu_attr_group);
}
const struct cpumask *cpu_thread_mask(int cpu)
{
return &cpu_topology[cpu].thread_mask;
}
const struct cpumask *cpu_coregroup_mask(int cpu)
{
return &cpu_topology[cpu].core_mask;
......@@ -456,6 +482,7 @@ static const struct cpumask *cpu_book_mask(int cpu)
}
static struct sched_domain_topology_level s390_topology[] = {
{ cpu_thread_mask, cpu_smt_flags, SD_INIT_NAME(SMT) },
{ cpu_coregroup_mask, cpu_core_flags, SD_INIT_NAME(MC) },
{ cpu_book_mask, SD_INIT_NAME(BOOK) },
{ cpu_cpu_mask, SD_INIT_NAME(DIE) },
......
arch/s390/kernel/vtime.c
View file @ b3d6524f
......@@ -15,6 +15,8 @@
#include <asm/cputime.h>
#include <asm/vtimer.h>
#include <asm/vtime.h>
#include <asm/cpu_mf.h>
#include <asm/smp.h>
static void virt_timer_expire(void);
......@@ -23,6 +25,10 @@ static DEFINE_SPINLOCK(virt_timer_lock);
static atomic64_t virt_timer_current;
static atomic64_t virt_timer_elapsed;
static DEFINE_PER_CPU(u64, mt_cycles[32]);
static DEFINE_PER_CPU(u64, mt_scaling_mult) = { 1 };
static DEFINE_PER_CPU(u64, mt_scaling_div) = { 1 };
static inline u64 get_vtimer(void)
{
u64 timer;
......@@ -61,6 +67,8 @@ static int do_account_vtime(struct task_struct *tsk, int hardirq_offset)
{
struct thread_info *ti = task_thread_info(tsk);
u64 timer, clock, user, system, steal;
u64 user_scaled, system_scaled;
int i;
timer = S390_lowcore.last_update_timer;
clock = S390_lowcore.last_update_clock;
......@@ -76,15 +84,49 @@ static int do_account_vtime(struct task_struct *tsk, int hardirq_offset)
S390_lowcore.system_timer += timer - S390_lowcore.last_update_timer;
S390_lowcore.steal_timer += S390_lowcore.last_update_clock - clock;
/* Do MT utilization calculation */
if (smp_cpu_mtid) {
u64 cycles_new[32], *cycles_old;
u64 delta, mult, div;
cycles_old = this_cpu_ptr(mt_cycles);
if (stcctm5(smp_cpu_mtid + 1, cycles_new) < 2) {
mult = div = 0;
for (i = 0; i <= smp_cpu_mtid; i++) {
delta = cycles_new[i] - cycles_old[i];
mult += delta;
div += (i + 1) * delta;
}
if (mult > 0) {
/* Update scaling factor */
__this_cpu_write(mt_scaling_mult, mult);
__this_cpu_write(mt_scaling_div, div);
memcpy(cycles_old, cycles_new,
sizeof(u64) * (smp_cpu_mtid + 1));
}
}
}
user = S390_lowcore.user_timer - ti->user_timer;
S390_lowcore.steal_timer -= user;
ti->user_timer = S390_lowcore.user_timer;
account_user_time(tsk, user, user);
system = S390_lowcore.system_timer - ti->system_timer;
S390_lowcore.steal_timer -= system;
ti->system_timer = S390_lowcore.system_timer;
account_system_time(tsk, hardirq_offset, system, system);
user_scaled = user;
system_scaled = system;
/* Do MT utilization scaling */
if (smp_cpu_mtid) {
u64 mult = __this_cpu_read(mt_scaling_mult);
u64 div = __this_cpu_read(mt_scaling_div);
user_scaled = (user_scaled * mult) / div;
system_scaled = (system_scaled * mult) / div;
}
account_user_time(tsk, user, user_scaled);
account_system_time(tsk, hardirq_offset, system, system_scaled);
steal = S390_lowcore.steal_timer;
if ((s64) steal > 0) {
......@@ -126,7 +168,7 @@ void vtime_account_user(struct task_struct *tsk)
void vtime_account_irq_enter(struct task_struct *tsk)
{
struct thread_info *ti = task_thread_info(tsk);
u64 timer, system;
u64 timer, system, system_scaled;
timer = S390_lowcore.last_update_timer;
S390_lowcore.last_update_timer = get_vtimer();
......@@ -135,7 +177,15 @@ void vtime_account_irq_enter(struct task_struct *tsk)
system = S390_lowcore.system_timer - ti->system_timer;
S390_lowcore.steal_timer -= system;
ti->system_timer = S390_lowcore.system_timer;
account_system_time(tsk, 0, system, system);
system_scaled = system;
/* Do MT utilization scaling */
if (smp_cpu_mtid) {
u64 mult = __this_cpu_read(mt_scaling_mult);
u64 div = __this_cpu_read(mt_scaling_div);
system_scaled = (system_scaled * mult) / div;
}
account_system_time(tsk, 0, system, system_scaled);
virt_timer_forward(system);
}
......
arch/s390/lib/spinlock.c
View file @ b3d6524f
......@@ -12,7 +12,15 @@
#include <linux/smp.h>
#include <asm/io.h>
int spin_retry = 1000;
int spin_retry = -1;
static int __init spin_retry_init(void)
{
if (spin_retry < 0)
spin_retry = MACHINE_HAS_CAD ? 10 : 1000;
return 0;
}
early_initcall(spin_retry_init);
/**
* spin_retry= parameter
......@@ -24,6 +32,11 @@ static int __init spin_retry_setup(char *str)
}
__setup("spin_retry=", spin_retry_setup);
static inline void _raw_compare_and_delay(unsigned int *lock, unsigned int old)
{
asm(".insn rsy,0xeb0000000022,%0,0,%1" : : "d" (old), "Q" (*lock));
}
void arch_spin_lock_wait(arch_spinlock_t *lp)
{
unsigned int cpu = SPINLOCK_LOCKVAL;
......@@ -46,6 +59,8 @@ void arch_spin_lock_wait(arch_spinlock_t *lp)
/* Loop for a while on the lock value. */
count = spin_retry;
do {
if (MACHINE_HAS_CAD)
_raw_compare_and_delay(&lp->lock, owner);
owner = ACCESS_ONCE(lp->lock);
} while (owner && count-- > 0);
if (!owner)
......@@ -84,6 +99,8 @@ void arch_spin_lock_wait_flags(arch_spinlock_t *lp, unsigned long flags)
/* Loop for a while on the lock value. */
count = spin_retry;
do {
if (MACHINE_HAS_CAD)
_raw_compare_and_delay(&lp->lock, owner);
owner = ACCESS_ONCE(lp->lock);
} while (owner && count-- > 0);
if (!owner)
......@@ -100,11 +117,19 @@ EXPORT_SYMBOL(arch_spin_lock_wait_flags);
int arch_spin_trylock_retry(arch_spinlock_t *lp)
{
unsigned int cpu = SPINLOCK_LOCKVAL;
unsigned int owner;
int count;
for (count = spin_retry; count > 0; count--)
if (arch_spin_trylock_once(lp))
return 1;
for (count = spin_retry; count > 0; count--) {
owner = ACCESS_ONCE(lp->lock);
/* Try to get the lock if it is free. */
if (!owner) {
if (_raw_compare_and_swap(&lp->lock, 0, cpu))
return 1;
} else if (MACHINE_HAS_CAD)
_raw_compare_and_delay(&lp->lock, owner);
}
return 0;
}
EXPORT_SYMBOL(arch_spin_trylock_retry);
......@@ -126,8 +151,11 @@ void _raw_read_lock_wait(arch_rwlock_t *rw)
}
old = ACCESS_ONCE(rw->lock);
owner = ACCESS_ONCE(rw->owner);
if ((int) old < 0)
if ((int) old < 0) {
if (MACHINE_HAS_CAD)
_raw_compare_and_delay(&rw->lock, old);
continue;
}
if (_raw_compare_and_swap(&rw->lock, old, old + 1))
return;
}
......@@ -141,8 +169,11 @@ int _raw_read_trylock_retry(arch_rwlock_t *rw)
while (count-- > 0) {
old = ACCESS_ONCE(rw->lock);
if ((int) old < 0)
if ((int) old < 0) {
if (MACHINE_HAS_CAD)
_raw_compare_and_delay(&rw->lock, old);
continue;
}
if (_raw_compare_and_swap(&rw->lock, old, old + 1))
return 1;
}
......@@ -173,6 +204,8 @@ void _raw_write_lock_wait(arch_rwlock_t *rw, unsigned int prev)
}
if ((old & 0x7fffffff) == 0 && (int) prev >= 0)
break;
if (MACHINE_HAS_CAD)
_raw_compare_and_delay(&rw->lock, old);
}
}
EXPORT_SYMBOL(_raw_write_lock_wait);
......@@ -201,6 +234,8 @@ void _raw_write_lock_wait(arch_rwlock_t *rw)
smp_rmb();
if ((old & 0x7fffffff) == 0 && (int) prev >= 0)
break;
if (MACHINE_HAS_CAD)
_raw_compare_and_delay(&rw->lock, old);
}
}
EXPORT_SYMBOL(_raw_write_lock_wait);
......@@ -214,8 +249,11 @@ int _raw_write_trylock_retry(arch_rwlock_t *rw)
while (count-- > 0) {
old = ACCESS_ONCE(rw->lock);
if (old)
if (old) {
if (MACHINE_HAS_CAD)
_raw_compare_and_delay(&rw->lock, old);
continue;
}
if (_raw_compare_and_swap(&rw->lock, 0, 0x80000000))
return 1;
}
......
arch/s390/mm/fault.c
View file @ b3d6524f
......@@ -171,7 +171,7 @@ static void dump_pagetable(unsigned long asce, unsigned long address)
table = table + ((address >> 20) & 0x7ff);
if (bad_address(table))
goto bad;
pr_cont(KERN_CONT "S:%016lx ", *table);
pr_cont("S:%016lx ", *table);
if (*table & (_SEGMENT_ENTRY_INVALID | _SEGMENT_ENTRY_LARGE))
goto out;
table = (unsigned long *)(*table & _SEGMENT_ENTRY_ORIGIN);
......@@ -261,7 +261,7 @@ static inline void report_user_fault(struct pt_regs *regs, long signr)
return;
if (!printk_ratelimit())
return;
printk(KERN_ALERT "User process fault: interruption code %04x ilc:%d",
printk(KERN_ALERT "User process fault: interruption code %04x ilc:%d ",
regs->int_code & 0xffff, regs->int_code >> 17);
print_vma_addr(KERN_CONT "in ", regs->psw.addr & PSW_ADDR_INSN);
printk(KERN_CONT "\n");
......
arch/s390/mm/init.c
View file @ b3d6524f
......@@ -71,13 +71,16 @@ static void __init setup_zero_pages(void)
break;
case 0x2827: /* zEC12 */
case 0x2828: /* zEC12 */
default:
order = 5;
break;
case 0x2964: /* z13 */
default:
order = 7;
break;
}
/* Limit number of empty zero pages for small memory sizes */
if (order > 2 && totalram_pages <= 16384)
order = 2;
while (order > 2 && (totalram_pages >> 10) < (1UL << order))
order--;
empty_zero_page = __get_free_pages(GFP_KERNEL | __GFP_ZERO, order);
if (!empty_zero_page)
......
arch/s390/mm/mmap.c
View file @ b3d6524f
......@@ -28,8 +28,12 @@
#include <linux/module.h>
#include <linux/random.h>
#include <linux/compat.h>
#include <linux/security.h>
#include <asm/pgalloc.h>
unsigned long mmap_rnd_mask;
unsigned long mmap_align_mask;
static unsigned long stack_maxrandom_size(void)
{
if (!(current->flags & PF_RANDOMIZE))
......@@ -60,8 +64,10 @@ static unsigned long mmap_rnd(void)
{
if (!(current->flags & PF_RANDOMIZE))
return 0;
/* 8MB randomization for mmap_base */
return (get_random_int() & 0x7ffUL) << PAGE_SHIFT;
if (is_32bit_task())
return (get_random_int() & 0x7ff) << PAGE_SHIFT;
else
return (get_random_int() & mmap_rnd_mask) << PAGE_SHIFT;
}
static unsigned long mmap_base_legacy(void)
......@@ -81,6 +87,106 @@ static inline unsigned long mmap_base(void)
return STACK_TOP - stack_maxrandom_size() - mmap_rnd() - gap;
}
unsigned long
arch_get_unmapped_area(struct file *filp, unsigned long addr,
unsigned long len, unsigned long pgoff, unsigned long flags)
{
struct mm_struct *mm = current->mm;
struct vm_area_struct *vma;
struct vm_unmapped_area_info info;
int do_color_align;
if (len > TASK_SIZE - mmap_min_addr)
return -ENOMEM;
if (flags & MAP_FIXED)
return addr;
if (addr) {
addr = PAGE_ALIGN(addr);
vma = find_vma(mm, addr);
if (TASK_SIZE - len >= addr && addr >= mmap_min_addr &&
(!vma || addr + len <= vma->vm_start))
return addr;
}
do_color_align = 0;
if (filp || (flags & MAP_SHARED))
do_color_align = !is_32bit_task();
info.flags = 0;
info.length = len;
info.low_limit = mm->mmap_base;
info.high_limit = TASK_SIZE;
info.align_mask = do_color_align ? (mmap_align_mask << PAGE_SHIFT) : 0;
info.align_offset = pgoff << PAGE_SHIFT;
return vm_unmapped_area(&info);
}
unsigned long
arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
const unsigned long len, const unsigned long pgoff,
const unsigned long flags)
{
struct vm_area_struct *vma;
struct mm_struct *mm = current->mm;
unsigned long addr = addr0;
struct vm_unmapped_area_info info;
int do_color_align;
/* requested length too big for entire address space */
if (len > TASK_SIZE - mmap_min_addr)
return -ENOMEM;
if (flags & MAP_FIXED)
return addr;
/* requesting a specific address */
if (addr) {
addr = PAGE_ALIGN(addr);
vma = find_vma(mm, addr);
if (TASK_SIZE - len >= addr && addr >= mmap_min_addr &&
(!vma || addr + len <= vma->vm_start))
return addr;
}
do_color_align = 0;
if (filp || (flags & MAP_SHARED))
do_color_align = !is_32bit_task();
info.flags = VM_UNMAPPED_AREA_TOPDOWN;
info.length = len;
info.low_limit = max(PAGE_SIZE, mmap_min_addr);
info.high_limit = mm->mmap_base;
info.align_mask = do_color_align ? (mmap_align_mask << PAGE_SHIFT) : 0;
info.align_offset = pgoff << PAGE_SHIFT;
addr = vm_unmapped_area(&info);
/*
* A failed mmap() very likely causes application failure,
* so fall back to the bottom-up function here. This scenario
* can happen with large stack limits and large mmap()
* allocations.
*/
if (addr & ~PAGE_MASK) {
VM_BUG_ON(addr != -ENOMEM);
info.flags = 0;
info.low_limit = TASK_UNMAPPED_BASE;
info.high_limit = TASK_SIZE;
addr = vm_unmapped_area(&info);
}
return addr;
}
unsigned long randomize_et_dyn(void)
{
unsigned long base;
base = (STACK_TOP / 3 * 2) & (~mmap_align_mask << PAGE_SHIFT);
return base + mmap_rnd();
}
#ifndef CONFIG_64BIT
/*
......@@ -177,4 +283,36 @@ void arch_pick_mmap_layout(struct mm_struct *mm)
}
}
static int __init setup_mmap_rnd(void)
{
struct cpuid cpu_id;
get_cpu_id(&cpu_id);
switch (cpu_id.machine) {
case 0x9672:
case 0x2064:
case 0x2066:
case 0x2084:
case 0x2086:
case 0x2094:
case 0x2096:
case 0x2097:
case 0x2098:
case 0x2817:
case 0x2818:
case 0x2827:
case 0x2828:
mmap_rnd_mask = 0x7ffUL;
mmap_align_mask = 0UL;
break;
case 0x2964: /* z13 */
default:
mmap_rnd_mask = 0x3ff80UL;
mmap_align_mask = 0x7fUL;
break;
}
return 0;
}
early_initcall(setup_mmap_rnd);
#endif
arch/s390/mm/pgtable.c
View file @ b3d6524f
......@@ -527,7 +527,7 @@ int __gmap_link(struct gmap *gmap, unsigned long gaddr, unsigned long vmaddr)
table += (gaddr >> 53) & 0x7ff;
if ((*table & _REGION_ENTRY_INVALID) &&
gmap_alloc_table(gmap, table, _REGION2_ENTRY_EMPTY,
gaddr & 0xffe0000000000000))
gaddr & 0xffe0000000000000UL))
return -ENOMEM;
table = (unsigned long *)(*table & _REGION_ENTRY_ORIGIN);
}
......@@ -535,7 +535,7 @@ int __gmap_link(struct gmap *gmap, unsigned long gaddr, unsigned long vmaddr)
table += (gaddr >> 42) & 0x7ff;
if ((*table & _REGION_ENTRY_INVALID) &&
gmap_alloc_table(gmap, table, _REGION3_ENTRY_EMPTY,
gaddr & 0xfffffc0000000000))
gaddr & 0xfffffc0000000000UL))
return -ENOMEM;
table = (unsigned long *)(*table & _REGION_ENTRY_ORIGIN);
}
......@@ -543,7 +543,7 @@ int __gmap_link(struct gmap *gmap, unsigned long gaddr, unsigned long vmaddr)
table += (gaddr >> 31) & 0x7ff;
if ((*table & _REGION_ENTRY_INVALID) &&
gmap_alloc_table(gmap, table, _SEGMENT_ENTRY_EMPTY,
gaddr & 0xffffffff80000000))
gaddr & 0xffffffff80000000UL))
return -ENOMEM;
table = (unsigned long *)(*table & _REGION_ENTRY_ORIGIN);
}
......
arch/s390/pci/pci_mmio.c
View file @ b3d6524f
......@@ -55,7 +55,7 @@ SYSCALL_DEFINE3(s390_pci_mmio_write, unsigned long, mmio_addr,
ret = get_pfn(mmio_addr, VM_WRITE, &pfn);
if (ret)
goto out;
io_addr = (void *)((pfn << PAGE_SHIFT) | (mmio_addr & ~PAGE_MASK));
io_addr = (void __iomem *)((pfn << PAGE_SHIFT) | (mmio_addr & ~PAGE_MASK));
ret = -EFAULT;
if ((unsigned long) io_addr < ZPCI_IOMAP_ADDR_BASE)
......@@ -96,7 +96,7 @@ SYSCALL_DEFINE3(s390_pci_mmio_read, unsigned long, mmio_addr,
ret = get_pfn(mmio_addr, VM_READ, &pfn);
if (ret)
goto out;
io_addr = (void *)((pfn << PAGE_SHIFT) | (mmio_addr & ~PAGE_MASK));
io_addr = (void __iomem *)((pfn << PAGE_SHIFT) | (mmio_addr & ~PAGE_MASK));
ret = -EFAULT;
if ((unsigned long) io_addr < ZPCI_IOMAP_ADDR_BASE)
......
drivers/s390/block/dasd.c
View file @ b3d6524f
......@@ -674,8 +674,9 @@ EXPORT_SYMBOL(dasd_enable_device);
unsigned int dasd_global_profile_level = DASD_PROFILE_OFF;
#ifdef CONFIG_DASD_PROFILE
struct dasd_profile_info dasd_global_profile_data;
static struct dentry *dasd_global_profile_dentry;
struct dasd_profile dasd_global_profile = {
.lock = __SPIN_LOCK_UNLOCKED(dasd_global_profile.lock),
};
static struct dentry *dasd_debugfs_global_entry;
/*
......@@ -696,11 +697,13 @@ static void dasd_profile_start(struct dasd_block *block,
if (++counter >= 31)
break;
if (dasd_global_profile_level) {
dasd_global_profile_data.dasd_io_nr_req[counter]++;
spin_lock(&dasd_global_profile.lock);
if (dasd_global_profile.data) {
dasd_global_profile.data->dasd_io_nr_req[counter]++;
if (rq_data_dir(req) == READ)
dasd_global_profile_data.dasd_read_nr_req[counter]++;
dasd_global_profile.data->dasd_read_nr_req[counter]++;
}
spin_unlock(&dasd_global_profile.lock);
spin_lock(&block->profile.lock);
if (block->profile.data) {
......@@ -825,8 +828,9 @@ static void dasd_profile_end(struct dasd_block *block,
dasd_profile_counter(irqtime / sectors, irqtimeps_ind);
dasd_profile_counter(endtime, endtime_ind);
if (dasd_global_profile_level) {
dasd_profile_end_add_data(&dasd_global_profile_data,
spin_lock(&dasd_global_profile.lock);
if (dasd_global_profile.data) {
dasd_profile_end_add_data(dasd_global_profile.data,
cqr->startdev != block->base,
cqr->cpmode == 1,
rq_data_dir(req) == READ,
......@@ -835,6 +839,7 @@ static void dasd_profile_end(struct dasd_block *block,
irqtime_ind, irqtimeps_ind,
endtime_ind);
}
spin_unlock(&dasd_global_profile.lock);
spin_lock(&block->profile.lock);
if (block->profile.data)
......@@ -876,12 +881,6 @@ void dasd_profile_reset(struct dasd_profile *profile)
spin_unlock_bh(&profile->lock);
}
void dasd_global_profile_reset(void)
{
memset(&dasd_global_profile_data, 0, sizeof(dasd_global_profile_data));
getnstimeofday(&dasd_global_profile_data.starttod);
}
int dasd_profile_on(struct dasd_profile *profile)
{
struct dasd_profile_info *data;
......@@ -949,12 +948,20 @@ static ssize_t dasd_stats_write(struct file *file,
dasd_profile_reset(prof);
} else if (strncmp(str, "on", 2) == 0) {
rc = dasd_profile_on(prof);
if (!rc)
rc = user_len;
if (rc)
goto out;
rc = user_len;
if (prof == &dasd_global_profile) {
dasd_profile_reset(prof);
dasd_global_profile_level = DASD_PROFILE_GLOBAL_ONLY;
}
} else if (strncmp(str, "off", 3) == 0) {
if (prof == &dasd_global_profile)
dasd_global_profile_level = DASD_PROFILE_OFF;
dasd_profile_off(prof);
} else
rc = -EINVAL;
out:
vfree(buffer);
return rc;
}
......@@ -1044,57 +1051,6 @@ static const struct file_operations dasd_stats_raw_fops = {
.write = dasd_stats_write,
};
static ssize_t dasd_stats_global_write(struct file *file,
const char __user *user_buf,
size_t user_len, loff_t *pos)
{
char *buffer, *str;
ssize_t rc;
if (user_len > 65536)
user_len = 65536;
buffer = dasd_get_user_string(user_buf, user_len);
if (IS_ERR(buffer))
return PTR_ERR(buffer);
str = skip_spaces(buffer);
rc = user_len;
if (strncmp(str, "reset", 5) == 0) {
dasd_global_profile_reset();
} else if (strncmp(str, "on", 2) == 0) {
dasd_global_profile_reset();
dasd_global_profile_level = DASD_PROFILE_GLOBAL_ONLY;
} else if (strncmp(str, "off", 3) == 0) {
dasd_global_profile_level = DASD_PROFILE_OFF;
} else
rc = -EINVAL;
vfree(buffer);
return rc;
}
static int dasd_stats_global_show(struct seq_file *m, void *v)
{
if (!dasd_global_profile_level) {
seq_puts(m, "disabled\n");
return 0;
}
dasd_stats_seq_print(m, &dasd_global_profile_data);
return 0;
}
static int dasd_stats_global_open(struct inode *inode, struct file *file)
{
return single_open(file, dasd_stats_global_show, NULL);
}
static const struct file_operations dasd_stats_global_fops = {
.owner = THIS_MODULE,
.open = dasd_stats_global_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
.write = dasd_stats_global_write,
};
static void dasd_profile_init(struct dasd_profile *profile,
struct dentry *base_dentry)
{
......@@ -1123,20 +1079,16 @@ static void dasd_profile_exit(struct dasd_profile *profile)
static void dasd_statistics_removeroot(void)
{
dasd_global_profile_level = DASD_PROFILE_OFF;
debugfs_remove(dasd_global_profile_dentry);
dasd_global_profile_dentry = NULL;
dasd_profile_exit(&dasd_global_profile);
debugfs_remove(dasd_debugfs_global_entry);
debugfs_remove(dasd_debugfs_root_entry);
}
static void dasd_statistics_createroot(void)
{
umode_t mode;
struct dentry *pde;
dasd_debugfs_root_entry = NULL;
dasd_debugfs_global_entry = NULL;
dasd_global_profile_dentry = NULL;
pde = debugfs_create_dir("dasd", NULL);
if (!pde || IS_ERR(pde))
goto error;
......@@ -1145,13 +1097,7 @@ static void dasd_statistics_createroot(void)
if (!pde || IS_ERR(pde))
goto error;
dasd_debugfs_global_entry = pde;
mode = (S_IRUSR | S_IWUSR | S_IFREG);
pde = debugfs_create_file("statistics", mode, dasd_debugfs_global_entry,
NULL, &dasd_stats_global_fops);
if (!pde || IS_ERR(pde))
goto error;
dasd_global_profile_dentry = pde;
dasd_profile_init(&dasd_global_profile, dasd_debugfs_global_entry);
return;
error:
......
drivers/s390/block/dasd_int.h
View file @ b3d6524f
......@@ -651,7 +651,7 @@ dasd_check_blocksize(int bsize)
#define DASD_PROFILE_GLOBAL_ONLY 2
extern debug_info_t *dasd_debug_area;
extern struct dasd_profile_info dasd_global_profile_data;
extern struct dasd_profile dasd_global_profile;
extern unsigned int dasd_global_profile_level;
extern const struct block_device_operations dasd_device_operations;
......@@ -728,7 +728,6 @@ int dasd_device_is_ro(struct dasd_device *);
void dasd_profile_reset(struct dasd_profile *);
int dasd_profile_on(struct dasd_profile *);
void dasd_profile_off(struct dasd_profile *);
void dasd_global_profile_reset(void);
char *dasd_get_user_string(const char __user *, size_t);
/* externals in dasd_devmap.c */
......
drivers/s390/block/dasd_proc.c
View file @ b3d6524f
......@@ -212,14 +212,15 @@ static int dasd_stats_proc_show(struct seq_file *m, void *v)
struct dasd_profile_info *prof;
int factor;
/* check for active profiling */
if (!dasd_global_profile_level) {
spin_lock_bh(&dasd_global_profile.lock);
prof = dasd_global_profile.data;
if (!prof) {
spin_unlock_bh(&dasd_global_profile.lock);
seq_printf(m, "Statistics are off - they might be "
"switched on using 'echo set on > "
"/proc/dasd/statistics'\n");
return 0;
}
prof = &dasd_global_profile_data;
/* prevent counter 'overflow' on output */
for (factor = 1; (prof->dasd_io_reqs / factor) > 9999999;
......@@ -255,6 +256,7 @@ static int dasd_stats_proc_show(struct seq_file *m, void *v)
dasd_statistics_array(m, prof->dasd_io_time3, factor);
seq_printf(m, "# of req in chanq at enqueuing (1..32) \n");
dasd_statistics_array(m, prof->dasd_io_nr_req, factor);
spin_unlock_bh(&dasd_global_profile.lock);
#else
seq_printf(m, "Statistics are not activated in this kernel\n");
#endif
......@@ -291,14 +293,19 @@ static ssize_t dasd_stats_proc_write(struct file *file,
dasd_stats_all_block_off();
goto out_error;
}
dasd_global_profile_reset();
rc = dasd_profile_on(&dasd_global_profile);
if (rc) {
dasd_stats_all_block_off();
goto out_error;
}
dasd_profile_reset(&dasd_global_profile);
dasd_global_profile_level = DASD_PROFILE_ON;
pr_info("The statistics feature has been switched "
"on\n");
} else if (strcmp(str, "off") == 0) {
/* switch off and reset statistics profiling */
/* switch off statistics profiling */
dasd_global_profile_level = DASD_PROFILE_OFF;
dasd_global_profile_reset();
dasd_profile_off(&dasd_global_profile);
dasd_stats_all_block_off();
pr_info("The statistics feature has been switched "
"off\n");
......@@ -306,7 +313,7 @@ static ssize_t dasd_stats_proc_write(struct file *file,
goto out_parse_error;
} else if (strncmp(str, "reset", 5) == 0) {
/* reset the statistics */
dasd_global_profile_reset();
dasd_profile_reset(&dasd_global_profile);
dasd_stats_all_block_reset();
pr_info("The statistics have been reset\n");
} else
......
drivers/s390/block/dcssblk.c
View file @ b3d6524f
......@@ -438,7 +438,13 @@ dcssblk_save_store(struct device *dev, struct device_attribute *attr, const char
pr_info("All DCSSs that map to device %s are "
"saved\n", dev_info->segment_name);
list_for_each_entry(entry, &dev_info->seg_list, lh) {
segment_save(entry->segment_name);
if (entry->segment_type == SEG_TYPE_EN ||
entry->segment_type == SEG_TYPE_SN)
pr_warn("DCSS %s is of type SN or EN"
" and cannot be saved\n",
entry->segment_name);
else
segment_save(entry->segment_name);
}
} else {
// device is busy => we save it when it becomes
......@@ -797,7 +803,12 @@ dcssblk_release(struct gendisk *disk, fmode_t mode)
pr_info("Device %s has become idle and is being saved "
"now\n", dev_info->segment_name);
list_for_each_entry(entry, &dev_info->seg_list, lh) {
segment_save(entry->segment_name);
if (entry->segment_type == SEG_TYPE_EN ||
entry->segment_type == SEG_TYPE_SN)
pr_warn("DCSS %s is of type SN or EN and cannot"
" be saved\n", entry->segment_name);
else
segment_save(entry->segment_name);
}
dev_info->save_pending = 0;
}
......
drivers/s390/char/hmcdrv_ftp.c
View file @ b3d6524f
......@@ -200,10 +200,9 @@ int hmcdrv_ftp_probe(void)
rc = hmcdrv_ftp_startup();
if (rc)
return rc;
goto out;
rc = hmcdrv_ftp_do(&ftp);
free_page((unsigned long) ftp.buf);
hmcdrv_ftp_shutdown();
switch (rc) {
......@@ -216,7 +215,8 @@ int hmcdrv_ftp_probe(void)
rc = 0; /* clear length (success) */
break;
} /* switch */
out:
free_page((unsigned long) ftp.buf);
return rc;
}
EXPORT_SYMBOL(hmcdrv_ftp_probe);
......
drivers/s390/char/hmcdrv_mod.c
View file @ b3d6524f
......@@ -11,7 +11,6 @@
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/version.h>
#include <linux/stat.h>
#include "hmcdrv_ftp.h"
......
drivers/s390/char/sclp_early.c
View file @ b3d6524f
......@@ -20,26 +20,31 @@ struct read_info_sccb {
struct sccb_header header; /* 0-7 */
u16 rnmax; /* 8-9 */
u8 rnsize; /* 10 */
u8 _reserved0[16 - 11]; /* 11-15 */
u8 _pad_11[16 - 11]; /* 11-15 */
u16 ncpurl; /* 16-17 */
u16 cpuoff; /* 18-19 */
u8 _reserved7[24 - 20]; /* 20-23 */
u8 _pad_20[24 - 20]; /* 20-23 */
u8 loadparm[8]; /* 24-31 */
u8 _reserved1[48 - 32]; /* 32-47 */
u8 _pad_32[42 - 32]; /* 32-41 */
u8 fac42; /* 42 */
u8 fac43; /* 43 */
u8 _pad_44[48 - 44]; /* 44-47 */
u64 facilities; /* 48-55 */
u8 _reserved2a[76 - 56]; /* 56-75 */
u8 _pad_56[66 - 56]; /* 56-65 */
u8 fac66; /* 66 */
u8 _pad_67[76 - 67]; /* 67-83 */
u32 ibc; /* 76-79 */
u8 _reserved2b[84 - 80]; /* 80-83 */
u8 _pad80[84 - 80]; /* 80-83 */
u8 fac84; /* 84 */
u8 fac85; /* 85 */
u8 _reserved3[91 - 86]; /* 86-90 */
u8 _pad_86[91 - 86]; /* 86-90 */
u8 flags; /* 91 */
u8 _reserved4[100 - 92]; /* 92-99 */
u8 _pad_92[100 - 92]; /* 92-99 */
u32 rnsize2; /* 100-103 */
u64 rnmax2; /* 104-111 */
u8 _reserved5[120 - 112]; /* 112-119 */
u8 _pad_112[120 - 112]; /* 112-119 */
u16 hcpua; /* 120-121 */
u8 _reserved6[4096 - 122]; /* 122-4095 */
u8 _pad_122[4096 - 122]; /* 122-4095 */
} __packed __aligned(PAGE_SIZE);
static char sccb_early[PAGE_SIZE] __aligned(PAGE_SIZE) __initdata;
......@@ -50,6 +55,10 @@ static unsigned int sclp_max_cpu;
static struct sclp_ipl_info sclp_ipl_info;
static unsigned char sclp_siif;
static u32 sclp_ibc;
static unsigned int sclp_mtid;
static unsigned int sclp_mtid_cp;
static unsigned int sclp_mtid_max;
static unsigned int sclp_mtid_prev;
u64 sclp_facilities;
u8 sclp_fac84;
......@@ -128,7 +137,7 @@ static void __init sclp_facilities_detect(struct read_info_sccb *sccb)
boot_cpu_address = stap();
cpue = (void *)sccb + sccb->cpuoff;
for (cpu = 0; cpu < sccb->ncpurl; cpue++, cpu++) {
if (boot_cpu_address != cpue->address)
if (boot_cpu_address != cpue->core_id)
continue;
sclp_siif = cpue->siif;
break;
......@@ -139,6 +148,11 @@ static void __init sclp_facilities_detect(struct read_info_sccb *sccb)
if (sccb->flags & 0x2)
sclp_ipl_info.has_dump = 1;
memcpy(&sclp_ipl_info.loadparm, &sccb->loadparm, LOADPARM_LEN);
sclp_mtid = (sccb->fac42 & 0x80) ? (sccb->fac42 & 31) : 0;
sclp_mtid_cp = (sccb->fac42 & 0x80) ? (sccb->fac43 & 31) : 0;
sclp_mtid_max = max(sclp_mtid, sclp_mtid_cp);
sclp_mtid_prev = (sccb->fac42 & 0x80) ? (sccb->fac66 & 31) : 0;
}
bool __init sclp_has_linemode(void)
......@@ -178,6 +192,21 @@ unsigned int sclp_get_ibc(void)
}
EXPORT_SYMBOL(sclp_get_ibc);
unsigned int sclp_get_mtid(u8 cpu_type)
{
return cpu_type ? sclp_mtid : sclp_mtid_cp;
}
unsigned int sclp_get_mtid_max(void)
{
return sclp_mtid_max;
}
unsigned int sclp_get_mtid_prev(void)
{
return sclp_mtid_prev;
}
/*
* This function will be called after sclp_facilities_detect(), which gets
* called from early.c code. The sclp_facilities_detect() function retrieves
......
drivers/s390/char/tape_34xx.c
View file @ b3d6524f
......@@ -773,13 +773,11 @@ tape_34xx_unit_check(struct tape_device *device, struct tape_request *request,
"occurred\n");
return tape_34xx_erp_failed(request, -EIO);
case 0x57:
if (device->cdev->id.driver_info == tape_3480) {
/* Attention intercept. */
return tape_34xx_erp_retry(request);
} else {
/* Global status intercept. */
return tape_34xx_erp_retry(request);
}
/*
* 3480: Attention intercept.
* 3490: Global status intercept.
*/
return tape_34xx_erp_retry(request);
case 0x5a:
/*
* Tape length incompatible. The tape inserted is too long,
......
drivers/s390/cio/cio.c
View file @ b3d6524f
......@@ -938,7 +938,7 @@ void reipl_ccw_dev(struct ccw_dev_id *devid)
{
struct subchannel_id uninitialized_var(schid);
s390_reset_system(NULL, NULL);
s390_reset_system(NULL, NULL, NULL);
if (reipl_find_schid(devid, &schid) != 0)
panic("IPL Device not found\n");
do_reipl_asm(*((__u32*)&schid));
......
drivers/s390/cio/idset.c
View file @ b3d6524f
......@@ -38,11 +38,6 @@ void idset_free(struct idset *set)
vfree(set);
}
void idset_clear(struct idset *set)
{
memset(set->bitmap, 0, bitmap_size(set->num_ssid, set->num_id));
}
void idset_fill(struct idset *set)
{
memset(set->bitmap, 0xff, bitmap_size(set->num_ssid, set->num_id));
......@@ -103,21 +98,6 @@ int idset_sch_contains(struct idset *set, struct subchannel_id schid)
return idset_contains(set, schid.ssid, schid.sch_no);
}
int idset_sch_get_first(struct idset *set, struct subchannel_id *schid)
{
int ssid = 0;
int id = 0;
int rc;
rc = idset_get_first(set, &ssid, &id);
if (rc) {
init_subchannel_id(schid);
schid->ssid = ssid;
schid->sch_no = id;
}
return rc;
}
int idset_is_empty(struct idset *set)
{
return bitmap_empty(set->bitmap, set->num_ssid * set->num_id);
......
drivers/s390/cio/idset.h
View file @ b3d6524f
......@@ -11,7 +11,6 @@
struct idset;
void idset_free(struct idset *set);
void idset_clear(struct idset *set);
void idset_fill(struct idset *set);
struct idset *idset_sch_new(void);
......@@ -19,7 +18,6 @@ void idset_sch_add(struct idset *set, struct subchannel_id id);
void idset_sch_del(struct idset *set, struct subchannel_id id);
void idset_sch_del_subseq(struct idset *set, struct subchannel_id schid);
int idset_sch_contains(struct idset *set, struct subchannel_id id);
int idset_sch_get_first(struct idset *set, struct subchannel_id *id);
int idset_is_empty(struct idset *set);
void idset_add_set(struct idset *to, struct idset *from);
......
drivers/s390/crypto/ap_bus.c
View file @ b3d6524f
......@@ -203,6 +203,24 @@ ap_test_queue(ap_qid_t qid, int *queue_depth, int *device_type)
return reg1;
}
/**
* ap_query_facilities(): PQAP(TAPQ) query facilities.
* @qid: The AP queue number
*
* Returns content of general register 2 after the PQAP(TAPQ)
* instruction was called.
*/
static inline unsigned long ap_query_facilities(ap_qid_t qid)
{
register unsigned long reg0 asm ("0") = qid | 0x00800000UL;
register unsigned long reg1 asm ("1");
register unsigned long reg2 asm ("2") = 0UL;
asm volatile(".long 0xb2af0000" /* PQAP(TAPQ) */
: "+d" (reg0), "=d" (reg1), "+d" (reg2) : : "cc");
return reg2;
}
/**
* ap_reset_queue(): Reset adjunct processor queue.
* @qid: The AP queue number
......@@ -1006,6 +1024,51 @@ void ap_bus_force_rescan(void)
}
EXPORT_SYMBOL(ap_bus_force_rescan);
/*
* ap_test_config(): helper function to extract the nrth bit
* within the unsigned int array field.
*/
static inline int ap_test_config(unsigned int *field, unsigned int nr)
{
if (nr > 0xFFu)
return 0;
return ap_test_bit((field + (nr >> 5)), (nr & 0x1f));
}
/*
* ap_test_config_card_id(): Test, whether an AP card ID is configured.
* @id AP card ID
*
* Returns 0 if the card is not configured
* 1 if the card is configured or
* if the configuration information is not available
*/
static inline int ap_test_config_card_id(unsigned int id)
{
if (!ap_configuration)
return 1;
return ap_test_config(ap_configuration->apm, id);
}
/*
* ap_test_config_domain(): Test, whether an AP usage domain is configured.
* @domain AP usage domain ID
*
* Returns 0 if the usage domain is not configured
* 1 if the usage domain is configured or
* if the configuration information is not available
*/
static inline int ap_test_config_domain(unsigned int domain)
{
if (!ap_configuration) /* QCI not supported */
if (domain < 16)
return 1; /* then domains 0...15 are configured */
else
return 0;
else
return ap_test_config(ap_configuration->aqm, domain);
}
/*
* AP bus attributes.
*/
......@@ -1121,6 +1184,42 @@ static ssize_t poll_timeout_store(struct bus_type *bus, const char *buf,
static BUS_ATTR(poll_timeout, 0644, poll_timeout_show, poll_timeout_store);
static ssize_t ap_max_domain_id_show(struct bus_type *bus, char *buf)
{
ap_qid_t qid;
int i, nd, max_domain_id = -1;
unsigned long fbits;
if (ap_configuration) {
if (ap_domain_index >= 0 && ap_domain_index < AP_DOMAINS) {
for (i = 0; i < AP_DEVICES; i++) {
if (!ap_test_config_card_id(i))
continue;
qid = AP_MKQID(i, ap_domain_index);
fbits = ap_query_facilities(qid);
if (fbits & (1UL << 57)) {
/* the N bit is 0, Nd field is filled */
nd = (int)((fbits & 0x00FF0000UL)>>16);
if (nd > 0)
max_domain_id = nd;
else
max_domain_id = 15;
} else {
/* N bit is 1, max 16 domains */
max_domain_id = 15;
}
break;
}
}
} else {
/* no APXA support, older machines with max 16 domains */
max_domain_id = 15;
}
return snprintf(buf, PAGE_SIZE, "%d\n", max_domain_id);
}
static BUS_ATTR(ap_max_domain_id, 0444, ap_max_domain_id_show, NULL);
static struct bus_attribute *const ap_bus_attrs[] = {
&bus_attr_ap_domain,
&bus_attr_ap_control_domain_mask,
......@@ -1128,50 +1227,10 @@ static struct bus_attribute *const ap_bus_attrs[] = {
&bus_attr_poll_thread,
&bus_attr_ap_interrupts,
&bus_attr_poll_timeout,
&bus_attr_ap_max_domain_id,
NULL,
};
static inline int ap_test_config(unsigned int *field, unsigned int nr)
{
if (nr > 0xFFu)
return 0;
return ap_test_bit((field + (nr >> 5)), (nr & 0x1f));
}
/*
* ap_test_config_card_id(): Test, whether an AP card ID is configured.
* @id AP card ID
*
* Returns 0 if the card is not configured
* 1 if the card is configured or
* if the configuration information is not available
*/
static inline int ap_test_config_card_id(unsigned int id)
{
if (!ap_configuration)
return 1;
return ap_test_config(ap_configuration->apm, id);
}
/*
* ap_test_config_domain(): Test, whether an AP usage domain is configured.
* @domain AP usage domain ID
*
* Returns 0 if the usage domain is not configured
* 1 if the usage domain is configured or
* if the configuration information is not available
*/
static inline int ap_test_config_domain(unsigned int domain)
{
if (!ap_configuration) /* QCI not supported */
if (domain < 16)
return 1; /* then domains 0...15 are configured */
else
return 0;
else
return ap_test_config(ap_configuration->aqm, domain);
}
/**
* ap_query_configuration(): Query AP configuration information.
*
......@@ -1434,9 +1493,6 @@ static void ap_scan_bus(struct work_struct *unused)
continue;
}
break;
case 11:
ap_dev->device_type = 10;
break;
default:
ap_dev->device_type = device_type;
}
......
drivers/s390/crypto/ap_bus.h
View file @ b3d6524f
......@@ -117,6 +117,7 @@ static inline int ap_test_bit(unsigned int *ptr, unsigned int nr)
#define AP_DEVICE_TYPE_CEX3A 8
#define AP_DEVICE_TYPE_CEX3C 9
#define AP_DEVICE_TYPE_CEX4 10
#define AP_DEVICE_TYPE_CEX5 11
/*
* Known function facilities
......
drivers/s390/crypto/zcrypt_api.h
View file @ b3d6524f
......@@ -75,6 +75,7 @@ struct ica_z90_status {
#define ZCRYPT_CEX3C 7
#define ZCRYPT_CEX3A 8
#define ZCRYPT_CEX4 10
#define ZCRYPT_CEX5 11
/**
* Large random numbers are pulled in 4096 byte chunks from the crypto cards
......
drivers/s390/crypto/zcrypt_cex4.c
View file @ b3d6524f
......@@ -26,6 +26,10 @@
#define CEX4A_SPEED_RATING 900 /* TODO new card, new speed rating */
#define CEX4C_SPEED_RATING 6500 /* TODO new card, new speed rating */
#define CEX4P_SPEED_RATING 7000 /* TODO new card, new speed rating */
#define CEX5A_SPEED_RATING 450 /* TODO new card, new speed rating */
#define CEX5C_SPEED_RATING 3250 /* TODO new card, new speed rating */
#define CEX5P_SPEED_RATING 3500 /* TODO new card, new speed rating */
#define CEX4A_MAX_MESSAGE_SIZE MSGTYPE50_CRB3_MAX_MSG_SIZE
#define CEX4C_MAX_MESSAGE_SIZE MSGTYPE06_MAX_MSG_SIZE
......@@ -39,6 +43,7 @@
static struct ap_device_id zcrypt_cex4_ids[] = {
{ AP_DEVICE(AP_DEVICE_TYPE_CEX4) },
{ AP_DEVICE(AP_DEVICE_TYPE_CEX5) },
{ /* end of list */ },
};
......@@ -70,11 +75,18 @@ static int zcrypt_cex4_probe(struct ap_device *ap_dev)
switch (ap_dev->device_type) {
case AP_DEVICE_TYPE_CEX4:
case AP_DEVICE_TYPE_CEX5:
if (ap_test_bit(&ap_dev->functions, AP_FUNC_ACCEL)) {
zdev = zcrypt_device_alloc(CEX4A_MAX_MESSAGE_SIZE);
if (!zdev)
return -ENOMEM;
zdev->type_string = "CEX4A";
if (ap_dev->device_type == AP_DEVICE_TYPE_CEX4) {
zdev->type_string = "CEX4A";
zdev->speed_rating = CEX4A_SPEED_RATING;
} else {
zdev->type_string = "CEX5A";
zdev->speed_rating = CEX5A_SPEED_RATING;
}
zdev->user_space_type = ZCRYPT_CEX3A;
zdev->min_mod_size = CEX4A_MIN_MOD_SIZE;
if (ap_test_bit(&ap_dev->functions, AP_FUNC_MEX4K) &&
......@@ -90,33 +102,42 @@ static int zcrypt_cex4_probe(struct ap_device *ap_dev)
CEX4A_MAX_MOD_SIZE_2K;
}
zdev->short_crt = 1;
zdev->speed_rating = CEX4A_SPEED_RATING;
zdev->ops = zcrypt_msgtype_request(MSGTYPE50_NAME,
MSGTYPE50_VARIANT_DEFAULT);
} else if (ap_test_bit(&ap_dev->functions, AP_FUNC_COPRO)) {
zdev = zcrypt_device_alloc(CEX4C_MAX_MESSAGE_SIZE);
if (!zdev)
return -ENOMEM;
zdev->type_string = "CEX4C";
if (ap_dev->device_type == AP_DEVICE_TYPE_CEX4) {
zdev->type_string = "CEX4C";
zdev->speed_rating = CEX4C_SPEED_RATING;
} else {
zdev->type_string = "CEX5C";
zdev->speed_rating = CEX5C_SPEED_RATING;
}
zdev->user_space_type = ZCRYPT_CEX3C;
zdev->min_mod_size = CEX4C_MIN_MOD_SIZE;
zdev->max_mod_size = CEX4C_MAX_MOD_SIZE;
zdev->max_exp_bit_length = CEX4C_MAX_MOD_SIZE;
zdev->short_crt = 0;
zdev->speed_rating = CEX4C_SPEED_RATING;
zdev->ops = zcrypt_msgtype_request(MSGTYPE06_NAME,
MSGTYPE06_VARIANT_DEFAULT);
} else if (ap_test_bit(&ap_dev->functions, AP_FUNC_EP11)) {
zdev = zcrypt_device_alloc(CEX4C_MAX_MESSAGE_SIZE);
if (!zdev)
return -ENOMEM;
zdev->type_string = "CEX4P";
if (ap_dev->device_type == AP_DEVICE_TYPE_CEX4) {
zdev->type_string = "CEX4P";
zdev->speed_rating = CEX4P_SPEED_RATING;
} else {
zdev->type_string = "CEX5P";
zdev->speed_rating = CEX5P_SPEED_RATING;
}
zdev->user_space_type = ZCRYPT_CEX4;
zdev->min_mod_size = CEX4C_MIN_MOD_SIZE;
zdev->max_mod_size = CEX4C_MAX_MOD_SIZE;
zdev->max_exp_bit_length = CEX4C_MAX_MOD_SIZE;
zdev->short_crt = 0;
zdev->speed_rating = CEX4C_SPEED_RATING;
zdev->ops = zcrypt_msgtype_request(MSGTYPE06_NAME,
MSGTYPE06_VARIANT_EP11);
}
......
drivers/tty/hvc/hvc_iucv.c
View file @ b3d6524f
/*
* hvc_iucv.c - z/VM IUCV hypervisor console (HVC) device driver
* z/VM IUCV hypervisor console (HVC) device driver
*
* This HVC device driver provides terminal access using
* z/VM IUCV communication paths.
*
* Copyright IBM Corp. 2008, 2009
* Copyright IBM Corp. 2008, 2013
*
* Author(s): Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
*/
......@@ -102,6 +102,7 @@ static struct hvc_iucv_private *hvc_iucv_table[MAX_HVC_IUCV_LINES];
#define IUCV_HVC_CON_IDX (0)
/* List of z/VM user ID filter entries (struct iucv_vmid_filter) */
#define MAX_VMID_FILTER (500)
#define FILTER_WILDCARD_CHAR '*'
static size_t hvc_iucv_filter_size;
static void *hvc_iucv_filter;
static const char *hvc_iucv_filter_string;
......@@ -734,20 +735,31 @@ static void hvc_iucv_notifier_del(struct hvc_struct *hp, int id)
* hvc_iucv_filter_connreq() - Filter connection request based on z/VM user ID
* @ipvmid: Originating z/VM user ID (right padded with blanks)
*
* Returns 0 if the z/VM user ID @ipvmid is allowed to connection, otherwise
* non-zero.
* Returns 0 if the z/VM user ID that is specified with @ipvmid is permitted to
* connect, otherwise non-zero.
*/
static int hvc_iucv_filter_connreq(u8 ipvmid[8])
{
size_t i;
const char *wildcard, *filter_entry;
size_t i, len;
/* Note: default policy is ACCEPT if no filter is set */
if (!hvc_iucv_filter_size)
return 0;
for (i = 0; i < hvc_iucv_filter_size; i++)
if (0 == memcmp(ipvmid, hvc_iucv_filter + (8 * i), 8))
for (i = 0; i < hvc_iucv_filter_size; i++) {
filter_entry = hvc_iucv_filter + (8 * i);
/* If a filter entry contains the filter wildcard character,
* reduce the length to match the leading portion of the user
* ID only (wildcard match). Characters following the wildcard
* are ignored.
*/
wildcard = strnchr(filter_entry, 8, FILTER_WILDCARD_CHAR);
len = (wildcard) ? wildcard - filter_entry : 8;
if (0 == memcmp(ipvmid, filter_entry, len))
return 0;
}
return 1;
}
......@@ -1166,6 +1178,7 @@ static void __init hvc_iucv_destroy(struct hvc_iucv_private *priv)
/**
* hvc_iucv_parse_filter() - Parse filter for a single z/VM user ID
* @filter: String containing a comma-separated list of z/VM user IDs
* @dest: Location where to store the parsed z/VM user ID
*/
static const char *hvc_iucv_parse_filter(const char *filter, char *dest)
{
......@@ -1188,6 +1201,10 @@ static const char *hvc_iucv_parse_filter(const char *filter, char *dest)
if (filter[len - 1] == '\n')
len--;
/* prohibit filter entries containing the wildcard character only */
if (len == 1 && *filter == FILTER_WILDCARD_CHAR)
return ERR_PTR(-EINVAL);
if (len > 8)
return ERR_PTR(-EINVAL);
......
include/linux/compiler.h
View file @ b3d6524f
......@@ -54,7 +54,11 @@ extern void __chk_io_ptr(const volatile void __iomem *);
#include <linux/compiler-gcc.h>
#endif
#ifdef CC_USING_HOTPATCH
#define notrace __attribute__((hotpatch(0,0)))
#else
#define notrace __attribute__((no_instrument_function))
#endif
/* Intel compiler defines __GNUC__. So we will overwrite implementations
* coming from above header files here
......
kernel/Makefile
View file @ b3d6524f
......@@ -13,8 +13,8 @@ obj-y = fork.o exec_domain.o panic.o \
ifdef CONFIG_FUNCTION_TRACER
# Do not trace debug files and internal ftrace files
CFLAGS_REMOVE_cgroup-debug.o = -pg
CFLAGS_REMOVE_irq_work.o = -pg
CFLAGS_REMOVE_cgroup-debug.o = $(CC_FLAGS_FTRACE)
CFLAGS_REMOVE_irq_work.o = $(CC_FLAGS_FTRACE)
endif
# cond_syscall is currently not LTO compatible
......
kernel/events/Makefile
View file @ b3d6524f
ifdef CONFIG_FUNCTION_TRACER
CFLAGS_REMOVE_core.o = -pg
CFLAGS_REMOVE_core.o = $(CC_FLAGS_FTRACE)
endif
obj-y := core.o ring_buffer.o callchain.o
......
kernel/locking/Makefile
View file @ b3d6524f
......@@ -2,10 +2,10 @@
obj-y += mutex.o semaphore.o rwsem.o
ifdef CONFIG_FUNCTION_TRACER
CFLAGS_REMOVE_lockdep.o = -pg
CFLAGS_REMOVE_lockdep_proc.o = -pg
CFLAGS_REMOVE_mutex-debug.o = -pg
CFLAGS_REMOVE_rtmutex-debug.o = -pg
CFLAGS_REMOVE_lockdep.o = $(CC_FLAGS_FTRACE)
CFLAGS_REMOVE_lockdep_proc.o = $(CC_FLAGS_FTRACE)
CFLAGS_REMOVE_mutex-debug.o = $(CC_FLAGS_FTRACE)
CFLAGS_REMOVE_rtmutex-debug.o = $(CC_FLAGS_FTRACE)
endif
obj-$(CONFIG_DEBUG_MUTEXES) += mutex-debug.o
......
kernel/sched/Makefile
View file @ b3d6524f
ifdef CONFIG_FUNCTION_TRACER
CFLAGS_REMOVE_clock.o = -pg
CFLAGS_REMOVE_clock.o = $(CC_FLAGS_FTRACE)
endif
ifneq ($(CONFIG_SCHED_OMIT_FRAME_POINTER),y)
......
kernel/trace/Makefile
View file @ b3d6524f
......@@ -3,11 +3,11 @@
ifdef CONFIG_FUNCTION_TRACER
ORIG_CFLAGS := $(KBUILD_CFLAGS)
KBUILD_CFLAGS = $(subst -pg,,$(ORIG_CFLAGS))
KBUILD_CFLAGS = $(subst $(CC_FLAGS_FTRACE),,$(ORIG_CFLAGS))
ifdef CONFIG_FTRACE_SELFTEST
# selftest needs instrumentation
CFLAGS_trace_selftest_dynamic.o = -pg
CFLAGS_trace_selftest_dynamic.o = $(CC_FLAGS_FTRACE)
obj-y += trace_selftest_dynamic.o
endif
endif
......
lib/Makefile
View file @ b3d6524f
......@@ -4,7 +4,7 @@
ifdef CONFIG_FUNCTION_TRACER
ORIG_CFLAGS := $(KBUILD_CFLAGS)
KBUILD_CFLAGS = $(subst -pg,,$(ORIG_CFLAGS))
KBUILD_CFLAGS = $(subst $(CC_FLAGS_FTRACE),,$(ORIG_CFLAGS))
endif
lib-y := ctype.o string.o vsprintf.o cmdline.o \
......
scripts/Makefile.build
View file @ b3d6524f
......@@ -234,8 +234,9 @@ sub_cmd_record_mcount = set -e ; perl $(srctree)/scripts/recordmcount.pl "$(ARCH
"$(if $(part-of-module),1,0)" "$(@)";
recordmcount_source := $(srctree)/scripts/recordmcount.pl
endif
cmd_record_mcount = \
if [ "$(findstring -pg,$(_c_flags))" = "-pg" ]; then \
cmd_record_mcount = \
if [ "$(findstring $(CC_FLAGS_FTRACE),$(_c_flags))" = \
"$(CC_FLAGS_FTRACE)" ]; then \
$(sub_cmd_record_mcount) \
fi;
endif
......
scripts/recordmcount.pl
View file @ b3d6524f
......@@ -242,8 +242,13 @@ if ($arch eq "x86_64") {
$cc .= " -m32";
} elsif ($arch eq "s390" && $bits == 64) {
$mcount_regex = "^\\s*([0-9a-fA-F]+):\\s*R_390_(PC|PLT)32DBL\\s+_mcount\\+0x2\$";
$mcount_adjust = -14;
if ($cc =~ /-DCC_USING_HOTPATCH/) {
$mcount_regex = "^\\s*([0-9a-fA-F]+):\\s*c0 04 00 00 00 00\\s*brcl\\s*0,[0-9a-f]+ <([^\+]*)>\$";
$mcount_adjust = 0;
} else {
$mcount_regex = "^\\s*([0-9a-fA-F]+):\\s*R_390_(PC|PLT)32DBL\\s+_mcount\\+0x2\$";
$mcount_adjust = -14;
}
$alignment = 8;
$type = ".quad";
$ld .= " -m elf64_s390";
......
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