Commit 7c6d4dca authored by Linus Torvalds's avatar Linus Torvalds

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mattst88/alpha

Pull alpha architecture fixes from Matt Turner:
 "This contains mostly clean ups and fixes but also an implementation of
  atomic64_dec_if_positive() and a pair of new syscalls"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mattst88/alpha:
  alpha: Use handle_percpu_irq for the timer interrupt
  alpha: Force the user-visible HZ to a constant 1024.
  alpha: Don't if-out dp264_device_interrupt.
  alpha: Use __builtin_alpha_rpcc
  alpha: Fix type compatibility warning for marvel_map_irq
  alpha: Generate dwarf2 unwind info for various kernel entry points.
  alpha: Implement atomic64_dec_if_positive
  alpha: Improve atomic_add_unless
  alpha: Modernize lib/mpi/longlong.h
  alpha: Add kcmp and finit_module syscalls
  alpha: locks: remove unused arch_*_relax operations
  alpha: kernel: typo issue, using '1' instead of '11'
  alpha: kernel: using memcpy() instead of strcpy()
  alpha: Convert print_symbol to %pSR
parents a030cbc3 dff64649
......@@ -15,6 +15,7 @@ config ALPHA
select ARCH_WANT_OPTIONAL_GPIOLIB
select ARCH_WANT_IPC_PARSE_VERSION
select ARCH_HAVE_NMI_SAFE_CMPXCHG
select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
select GENERIC_SMP_IDLE_THREAD
select GENERIC_CMOS_UPDATE
select GENERIC_STRNCPY_FROM_USER
......
......@@ -186,17 +186,24 @@ static __inline__ long atomic64_sub_return(long i, atomic64_t * v)
*/
static __inline__ int __atomic_add_unless(atomic_t *v, int a, int u)
{
int c, old;
c = atomic_read(v);
for (;;) {
if (unlikely(c == (u)))
break;
old = atomic_cmpxchg((v), c, c + (a));
if (likely(old == c))
break;
c = old;
}
return c;
int c, new, old;
smp_mb();
__asm__ __volatile__(
"1: ldl_l %[old],%[mem]\n"
" cmpeq %[old],%[u],%[c]\n"
" addl %[old],%[a],%[new]\n"
" bne %[c],2f\n"
" stl_c %[new],%[mem]\n"
" beq %[new],3f\n"
"2:\n"
".subsection 2\n"
"3: br 1b\n"
".previous"
: [old] "=&r"(old), [new] "=&r"(new), [c] "=&r"(c)
: [mem] "m"(*v), [a] "rI"(a), [u] "rI"((long)u)
: "memory");
smp_mb();
return old;
}
......@@ -207,21 +214,56 @@ static __inline__ int __atomic_add_unless(atomic_t *v, int a, int u)
* @u: ...unless v is equal to u.
*
* Atomically adds @a to @v, so long as it was not @u.
* Returns the old value of @v.
* Returns true iff @v was not @u.
*/
static __inline__ int atomic64_add_unless(atomic64_t *v, long a, long u)
{
long c, old;
c = atomic64_read(v);
for (;;) {
if (unlikely(c == (u)))
break;
old = atomic64_cmpxchg((v), c, c + (a));
if (likely(old == c))
break;
c = old;
}
return c != (u);
long c, tmp;
smp_mb();
__asm__ __volatile__(
"1: ldq_l %[tmp],%[mem]\n"
" cmpeq %[tmp],%[u],%[c]\n"
" addq %[tmp],%[a],%[tmp]\n"
" bne %[c],2f\n"
" stq_c %[tmp],%[mem]\n"
" beq %[tmp],3f\n"
"2:\n"
".subsection 2\n"
"3: br 1b\n"
".previous"
: [tmp] "=&r"(tmp), [c] "=&r"(c)
: [mem] "m"(*v), [a] "rI"(a), [u] "rI"(u)
: "memory");
smp_mb();
return !c;
}
/*
* atomic64_dec_if_positive - decrement by 1 if old value positive
* @v: pointer of type atomic_t
*
* The function returns the old value of *v minus 1, even if
* the atomic variable, v, was not decremented.
*/
static inline long atomic64_dec_if_positive(atomic64_t *v)
{
long old, tmp;
smp_mb();
__asm__ __volatile__(
"1: ldq_l %[old],%[mem]\n"
" subq %[old],1,%[tmp]\n"
" ble %[old],2f\n"
" stq_c %[tmp],%[mem]\n"
" beq %[tmp],3f\n"
"2:\n"
".subsection 2\n"
"3: br 1b\n"
".previous"
: [old] "=&r"(old), [tmp] "=&r"(tmp)
: [mem] "m"(*v)
: "memory");
smp_mb();
return old - 1;
}
#define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1, 0)
......
......@@ -3,7 +3,9 @@
#include <uapi/asm/param.h>
#define HZ CONFIG_HZ
#define USER_HZ HZ
# define CLOCKS_PER_SEC HZ /* frequency at which times() counts */
# undef HZ
# define HZ CONFIG_HZ
# define USER_HZ 1024
# define CLOCKS_PER_SEC USER_HZ /* frequency at which times() counts */
#endif /* _ASM_ALPHA_PARAM_H */
......@@ -168,8 +168,4 @@ static inline void arch_write_unlock(arch_rwlock_t * lock)
#define arch_read_lock_flags(lock, flags) arch_read_lock(lock)
#define arch_write_lock_flags(lock, flags) arch_write_lock(lock)
#define arch_spin_relax(lock) cpu_relax()
#define arch_read_relax(lock) cpu_relax()
#define arch_write_relax(lock) cpu_relax()
#endif /* _ALPHA_SPINLOCK_H */
......@@ -3,8 +3,7 @@
#include <uapi/asm/unistd.h>
#define NR_SYSCALLS 506
#define NR_SYSCALLS 508
#define __ARCH_WANT_OLD_READDIR
#define __ARCH_WANT_STAT64
......
#ifndef _UAPI_ASM_ALPHA_PARAM_H
#define _UAPI_ASM_ALPHA_PARAM_H
/* ??? Gross. I don't want to parameterize this, and supposedly the
hardware ignores reprogramming. We also need userland buy-in to the
change in HZ, since this is visible in the wait4 resources etc. */
#ifndef __KERNEL__
#define HZ 1024
#endif
#define EXEC_PAGESIZE 8192
......@@ -17,5 +11,4 @@
#define MAXHOSTNAMELEN 64 /* max length of hostname */
#endif /* _UAPI_ASM_ALPHA_PARAM_H */
......@@ -467,5 +467,7 @@
#define __NR_sendmmsg 503
#define __NR_process_vm_readv 504
#define __NR_process_vm_writev 505
#define __NR_kcmp 506
#define __NR_finit_module 507
#endif /* _UAPI_ALPHA_UNISTD_H */
This diff is collapsed.
......@@ -236,7 +236,7 @@ void __init
init_rtc_irq(void)
{
irq_set_chip_and_handler_name(RTC_IRQ, &dummy_irq_chip,
handle_simple_irq, "RTC");
handle_percpu_irq, "RTC");
setup_irq(RTC_IRQ, &timer_irqaction);
}
......
......@@ -264,9 +264,10 @@ recv_secondary_console_msg(void)
if (cnt <= 0 || cnt >= 80)
strcpy(buf, "<<< BOGUS MSG >>>");
else {
cp1 = (char *) &cpu->ipc_buffer[11];
cp1 = (char *) &cpu->ipc_buffer[1];
cp2 = buf;
strcpy(cp2, cp1);
memcpy(cp2, cp1, cnt);
cp2[cnt] = '\0';
while ((cp2 = strchr(cp2, '\r')) != 0) {
*cp2 = ' ';
......
......@@ -190,9 +190,6 @@ static struct irq_chip clipper_irq_type = {
static void
dp264_device_interrupt(unsigned long vector)
{
#if 1
printk("dp264_device_interrupt: NOT IMPLEMENTED YET!!\n");
#else
unsigned long pld;
unsigned int i;
......@@ -210,12 +207,7 @@ dp264_device_interrupt(unsigned long vector)
isa_device_interrupt(vector);
else
handle_irq(16 + i);
#if 0
TSUNAMI_cchip->dir0.csr = 1UL << i; mb();
tmp = TSUNAMI_cchip->dir0.csr;
#endif
}
#endif
}
static void
......
......@@ -317,8 +317,9 @@ marvel_init_irq(void)
}
static int
marvel_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
marvel_map_irq(const struct pci_dev *cdev, u8 slot, u8 pin)
{
struct pci_dev *dev = (struct pci_dev *)cdev;
struct pci_controller *hose = dev->sysdata;
struct io7_port *io7_port = hose->sysdata;
struct io7 *io7 = io7_port->io7;
......
......@@ -524,6 +524,8 @@ sys_call_table:
.quad sys_sendmmsg
.quad sys_process_vm_readv
.quad sys_process_vm_writev /* 505 */
.quad sys_kcmp
.quad sys_finit_module
.size sys_call_table, . - sys_call_table
.type sys_call_table, @object
......
......@@ -105,9 +105,7 @@ void arch_irq_work_raise(void)
static inline __u32 rpcc(void)
{
__u32 result;
asm volatile ("rpcc %0" : "=r"(result));
return result;
return __builtin_alpha_rpcc();
}
int update_persistent_clock(struct timespec now)
......
......@@ -66,8 +66,8 @@ dik_show_regs(struct pt_regs *regs, unsigned long *r9_15)
{
printk("pc = [<%016lx>] ra = [<%016lx>] ps = %04lx %s\n",
regs->pc, regs->r26, regs->ps, print_tainted());
print_symbol("pc is at %s\n", regs->pc);
print_symbol("ra is at %s\n", regs->r26 );
printk("pc is at %pSR\n", (void *)regs->pc);
printk("ra is at %pSR\n", (void *)regs->r26);
printk("v0 = %016lx t0 = %016lx t1 = %016lx\n",
regs->r0, regs->r1, regs->r2);
printk("t2 = %016lx t3 = %016lx t4 = %016lx\n",
......@@ -132,9 +132,7 @@ dik_show_trace(unsigned long *sp)
continue;
if (tmp >= (unsigned long) &_etext)
continue;
printk("[<%lx>]", tmp);
print_symbol(" %s", tmp);
printk("\n");
printk("[<%lx>] %pSR\n", tmp, (void *)tmp);
if (i > 40) {
printk(" ...");
break;
......
......@@ -154,12 +154,9 @@ do { \
#define umul_ppmm(ph, pl, m0, m1) \
do { \
UDItype __m0 = (m0), __m1 = (m1); \
__asm__ ("umulh %r1,%2,%0" \
: "=r" ((UDItype) ph) \
: "%rJ" (__m0), \
"rI" (__m1)); \
(ph) = __builtin_alpha_umulh(__m0, __m1); \
(pl) = __m0 * __m1; \
} while (0)
} while (0)
#define UMUL_TIME 46
#ifndef LONGLONG_STANDALONE
#define udiv_qrnnd(q, r, n1, n0, d) \
......@@ -167,7 +164,7 @@ do { UDItype __r; \
(q) = __udiv_qrnnd(&__r, (n1), (n0), (d)); \
(r) = __r; \
} while (0)
extern UDItype __udiv_qrnnd();
extern UDItype __udiv_qrnnd(UDItype *, UDItype, UDItype, UDItype);
#define UDIV_TIME 220
#endif /* LONGLONG_STANDALONE */
#endif /* __alpha */
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment