- 18 Oct, 2004 40 commits
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Nick Piggin authored
Fix an oops in the domain debug code when isolated CPUs are specified. Introduced by 5/8 "sched add load balance flag" Signed-off-by:
Nick Piggin <nickpiggin@yahoo.com.au> Signed-off-by:
Andrew Morton <akpm@osdl.org> Signed-off-by:
Linus Torvalds <torvalds@osdl.org>
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Nick Piggin authored
Implement disjoint NUMA domain setup for IA64 architecture. Most of the code was what was ripped out of kernel/sched.c, which was written by Jesse Barnes <jbarnes@sgi.com>. I fixed up the tricky NUMA groups initialistion. Signed-off-by:
Ingo Molnar <mingo@elte.hu> Signed-off-by:
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Nick Piggin authored
Allow sched domain setup to be overridden by arch code. This functionality is needed again. From: Paul Jackson <pj@sgi.com> Builds of 2.6.9-rc1-mm5 ia64 NUMA configs fail, with many complaints that SD_NODE_INIT is defined twice, in asm/processor.h and linux/sched.h. I guess that the preprocessor conditionals were wrong when Nick added the per-arch override ability again of SD_NODE_INIT were wrong. At least this change lets me rebuild ia64 again. Signed-off-by:
Paul Jackson <pj@sgi.com> Signed-off-by:
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Nick Piggin authored
Remove the disjoint NUMA domains setup code. It was broken. Signed-off-by:
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Nick Piggin authored
Introduce SD_LOAD_BALANCE flag for domains where we don't want to do load balancing (so we don't have to set up meaningless spans and groups). Use this for the initial dummy domain, and just leave isolated CPUs on the dummy domain. Signed-off-by:
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Andrew Morton authored
kernel/sched.c:4114: warning: `arch_destroy_sched_domains' defined but not used Signed-off-by:
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Nick Piggin authored
Register a cpu hotplug notifier which reinitializes the scheduler domains hierarchy. The notifier temporarily attaches all running cpus to a "dummy" domain (like we currently do during boot) to avoid balancing. It then calls arch_init_sched_domains which rebuilds the "real" domains and reattaches the cpus to them. Also change __init attributes to __devinit where necessary. Signed-off-by:
Nathan Lynch <nathanl@austin.ibm.com> Alterations from Nick Piggin: * Detach all domains in CPU_UP|DOWN_PREPARE notifiers. Reinitialise and reattach in CPU_ONLINE|DEAD|UP_CANCELED. This ensures the domains as seen from the scheduler won't become out of synch with the cpu_online_map. * This allows us to remove runtime cpu_online verifications. Do that. * Dummy domains are __devinitdata. * Remove the hackery in arch_init_sched_domains to work around the fact that the domains used to work with cpu_possible maps, but node_to_cpumask returned a cpu_online map. Signed-off-by:
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Nick Piggin authored
Add a CPU_DOWN_PREPARE hotplug CPU notifier. This is needed so we can dettach all sched-domains before a CPU goes down, thus we can build domains from online cpumasks, and not have to check for the possibility of a CPU coming up or going down. Signed-off-by:
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Nick Piggin authored
The following patches properly intergrate sched domains and cpu hotplug (using Nathan's code), by having sched-domains *always* only represent online CPUs, and having hotplug notifier to keep them up to date. Then tackle Jesse's domain setup problem: the disjoint top-level domains were completely broken. The group-list builder thingy simply can't handle distinct sets of groups containing the same CPUs. The code is ugly and specific enough that I'm re-introducing the arch overridable domains. I doubt we'll get a proliferation of implementations, because the current generic code can do the job for everyone but SGI. I'd rather take a look at it again down the track if we need to rather than try to shoehorn this into the generic code. Nathan and I have tested the hotplug work. He's happy with it. I've tested the disjoint domain stuff (copied it to i386 for the test), and it does the right thing on the NUMAQ. I've asked Jesse to test it as well, but it should be fine - maybe just help me out and run a test compile on ia64 ;) This really gets sched domains into much better shape. Without further ado, the patches. This patch: Make a definition static and slightly sanitize ifdefs. Signed-off-by:
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Vladimir Grouzdev authored
The xtime value may become incorrect when the update_wall_time(ticks) function is called with "ticks" > 1. In such a case, the xtime variable is updated multiple times inside the loop but it is normalized only once outside of the loop. This bug was reported at: http://bugme.osdl.org/show_bug.cgi?id=3403Signed-off-by:
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Jeff Mahoney authored
This patch fixes several missing reiserfs_write_unlock() calls on error paths not introduced by reiserfs-io-error-handling.diff Signed-off-by:
Jeff Mahoney <jeffm@novell.com> Signed-off-by:
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Jeff Mahoney authored
This patch allows ReiserFS to handle I/O errors in the journal (or journal flush) where it would have previously panicked. The new behavior is to mark the filesystem read-only, disallow new transactions to be started, and to allow existing transactions to complete (though not to commit). The resultant filesystem can be safely umounted, and checked via normal mechanisms. As it is a journaling filesystem, the filesystem itself will be in a similar state to the power being cut to the machine, once umounted. Signed-off-by:
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Jeff Mahoney authored
This patch cleans up fs/reiserfs/journal.c such that repeated uses of SB_JOURNAL(p_s_sb) are removed in favor of a local journal variable. The compiler won't care, and it makes the code much easier to read. Signed-off-by:
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Jeff Mahoney authored
This patch cleans up ReiserFS's use of buffer head flags. All direct access of BH_* are made into macro calls, and all reiserfs-specific BH_* macro implementations have been removed and replaced with the BUFFER_FNS implementations found in linux/buffer_head.h Signed-off-by:
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Gerald Schaefer authored
Add support to read z/VM monitor records. Signed-off-by:
Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by:
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Eric Rossman authored
crypto driver changes: - Add support for zero-pad and crypto express II (CEX2C). Signed-off-by:
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Stefan Weinhuber authored
Add an interface to read from the z/VM recording system services. Signed-off-by:
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Arnd Bergmann authored
Add support for z/VM watchdog timer. Signed-off-by:
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Martin Schwidefsky authored
From: Frank Pavlic <pavlic@de.ibm.com> From: Thomas Spatzier <tspat@de.ibm.com> qeth network driver changes: - Add Layer 2 support for OSA-Express. Signed-off-by:
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Andreas Herrmann authored
zfcp host adapter change: - Return -EIO if wait_event_interruptible_timeout was interrupted. - Reduce stack uage of zfcp_cfdc_dev_ioctl. - Make zfcp_sg_list_[alloc,free] more consistent. - Store driver version to zfcp_data structure. - Add missing FSF states and make corresponding log messages consistent. - Always wait for completion in zfcp_scsi_command_sync. - Add Andreas to authors list. - Add timeout for cfdc upload/download. - Add support for temporary units (units not registered to the scsi stack). - Allow sending of ELS commands to ports by their d_id. - Increase port refcount while link test is running. Signed-off-by:
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Paolo \'Blaisorblade\' Giarrusso authored
Since people are used to doing "make linux ARCH=um" and to use "linux" as the kernel image, make it be an hard link to vmlinux. This should hurt the less possible the users (actually nothing) while not slowing down the build. Acked-by:
Jeff Dike <jdike@addtoit.com> Signed-off-by:
Paolo 'Blaisorblade' Giarrusso <blaisorblade_spam@yahoo.it> Signed-off-by:
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Hirokazu Takata authored
Here is a patch to fix a compile error of m32r-sio.c. * include/asm-m32r/termbits.h: - Add CTVB definition. This modification is derived from new-serial-flow-control.patch; "[Patch] new serial flow control" (Oct. 4, 2004) http://www.uwsg.iu.edu/hypermail/linux/kernel/0410.0/0853.htmlSigned-off-by:
Hirokazu Takata <takata@linux-m32r.org> Signed-off-by:
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Hirokazu Takata authored
Here is a patch to update arch/m32r/mm/fault.c in order to fix a compile error of -mm kernel for m32r. * arch/m32r/mm/fault.c: - Add the third parameter of expand_stack(). This modification is derived from enforce-a-gap-between-heap-and-stack.patch; "heap-stack-gap for 2.6" (Sep. 25, 2004) http://www.uwsg.iu.edu/hypermail/linux/kernel/0409.3/0435.htmlSigned-off-by:
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Hirokazu Takata authored
This patch fixes a sys_tas system call for m32r. - This patch fixes an Oops at sys_tas() in case CONFIG_SMP && CONFIG_PREEMPT. > Unable to handle kernel paging request at virtual address XXXXXXXX It is because a page fault happens at the spin_locked region in sys_tas() and in_atomic() checks preempt_count, but spin_lock() already counts up the preemt_count. arch/m32r/kernel/sys_m32r.c: 32 /* 33 * sys_tas() - test-and-set 34 * linuxthreads testing version 35 */ 36 #ifndef CONFIG_SMP 37 asmlinkage int sys_tas(int *addr) 38 { 39 int oldval; 40 unsigned long flags; 41 42 if (!access_ok(VERIFY_WRITE, addr, sizeof (int))) 43 return -EFAULT; 44 local_irq_save(flags); 45 oldval = *addr; 46 *addr = 1; 47 local_irq_restore(flags); 48 return oldval; 49 } 50 #else /* CONFIG_SMP */ 51 #include <linux/spinlock.h> 52 53 static spinlock_t tas_lock = SPIN_LOCK_UNLOCKED; 54 55 asmlinkage int sys_tas(int *addr) 56 { 57 int oldval; 58 59 if (!access_ok(VERIFY_WRITE, addr, sizeof (int))) 60 return -EFAULT; 61 62 spin_lock(&tas_lock); 63 oldval = *addr; /* <<< ATTENTION >>> * A page fault may happen here, because "addr" points an * user-space area. */ 64 *addr = 1; 65 spin_unlock(&tas_lock); 66 67 return oldval; 68 } 69 #endif /* CONFIG_SMP */ arch/mm/fault.c: 137 /* 138 * If we're in an interrupt or have no user context or are runni ng in an 139 * atomic region then we must not take the fault.. 140 */ 141 if (in_atomic() || !mm) 142 goto bad_area_nosemaphore; - sys_tas() is used for user-level mutual exclusion for the m32r, which is prepared to implement a linuxthreads library. The above problem may be happened in a program, which uses pthread_mutex_lock(), calls sys_tas(). The current m32r instruction set has no user-level locking functions for mutual exclusion. # I hope it will be fixed in the future... - This patch fixes the problem by using _raw_spin_lock() instead of spin_lock(). spin_lock() increments up preemt_count, on the contrary, _raw_sping_lock() does not. # I think this fix is just a temporary work around, and # it is preferable to be rewrite to make it simpler by using # asm() function or something... * arch/m32r/kernel/sys_m32r.c: - Fix sys_tas() for CONFIG_SMP && CONFIG_PREEMPT. Signed-off-by:Hayato Fujiwara <fujiwara@linux-m32r.org> Signed-off-by:
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Hirokazu Takata authored
Here is a patch to support the M32R SIO (serial IO) driver. This driver supports the M32R serial ports. - Supports two types M32R serial interfaces; M32R_SIO and M32R_PLDSIO. - With SMP safeness. Currently the M32R_PLDSIO serial interface, which is implemented on a PLD on the M3T-M32700UT evaluation board, has slightly different specification from the integrated peripheral SIO (M32R_SIO). Now we can select them by CONFIG_ option. It is a serial-core based driver, based on drivers/serial/8250.c. Any comments or suggestions will be appreciated. Signed-off-by:
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Hirokazu Takata authored
Here is a patch for the Renesas AR camera driver for m32r. - AR (artificial retina) camera is newly supported. AR camera module: Renesas M64278E-800, VGA(640x480 pixcels) http://www.renesas.com/avs/resource/japan/jpn/pdf/assp/rjj01f0005_psmobile.pdfSigned-off-by: -
Hirokazu Takata authored
Here is a patch to update include/asm-m32r/m32102.h. * include/asm-m32r/m32102.h: - Add macro definitions for DMA controller. - Cosmetics; rearrange indentations. Signed-off-by: -
Hirokazu Takata authored
This patch is for the new M32R CF/PCMCIA drivers. It is moved from arch/m32r/drivers/ and some part are updated for 2.6 kernel. Signed-off-by:
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Hirokazu Takata authored
This is a DS1302 real-time clock driver. It is moved from arch/m32r/drivers/, has been originally taken from arch/cris/arch-v10/drivers/ds1302.c. Currently, this driver supports only m32r target boards. Maybe some work will be required to support other target. Signed-off-by:
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Guido Guenther authored
Allow swsusp work with macintosh's own thermal sensor drivers enabled. Contributions from Nathan Hand <nathanh@manu.com.au> Signed-Of-By:
Guido Guenther <agx@sigcpu.org> Signed-off-by:
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Venkatesh Pallipadi authored
This patch is required for S3 suspend-resume on noexec capable systems. On these systems, we need to save and restore MSR_EFER during S3 suspend-resume. Signed-off-by:
"Venkatesh Pallipadi" <venkatesh.pallipadi@intel.com> Signed-off-by:
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Oliver Neukum authored
This is additional documentation for power management. Pavel Machek has given his acknowledgement. Signed-Off-By:
Oliver Neukum <oliver@neukum.name> Signed-off-by:
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Pavel Machek authored
Documentation update. Signed-off-by:
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Pavel Machek authored
apm.c needs save_processor_state and friends. Add a comment to keep people from removing it. Describe a way to make swsusp work on non-PSE machines. Document purpose of acpi_restore_state. Signed-off-by:
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Pavel Machek authored
Currently, process start times change after swsusp (because they are derived from jiffies and current time, oops). This should fix it. Signed-off-by:
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Randy Dunlap authored
Code section errors in i386/io_apic.c found by scripts/reference_init.pl. Looks like they could cause problems for a few drivers or in a real hotplug environment. Error: ./arch/i386/kernel/io_apic.o .text refers to 000018ff R_386_PC32 .init.text call chain: snd_mpu401_acpi_resource acpi_register_gsi mp_register_gsi io_apic_set_pci_routing {A} ioapic_register_intr IO_APIC_irq_trigger find_irq_entry Error: ./arch/i386/kernel/io_apic.o .text refers to 00001967 R_386_PC32 .init.text (as above thru {A}, then:) IO_APIC_irq_trigger irq_trigger MPBIOS_trigger >> removing __init from this led to needing to remove __init from EISA_ELCR also. Signed-off-by:Randy Dunlap <rddunlap@osdl.org> Signed-off-by:
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Ingo Molnar authored
Fix interaction between nosmp and pcibios_fixup_irqs(). When we boot with nosmp we dont have all the mptable info, so IO_APIC_get_PCI_irq_vector() doesnt work and devices just end up getting a wrong interrupt. From: Oleg Nesterov <oleg@tv-sign.ru> Acked-by:
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Suresh B. Siddha authored
As part of the workaround for the "Interrupt message re-ordering across hub interface" errata (page #16 in http://developer.intel.com/design/chipsets/specupdt/30288402.pdf), BIOS may enable hardware IRQ balancing for E7520/E7320/E7525(revision ID 0x9 and below) based platforms. Add pci quirks to disable SW irqbalance/affinity on those platforms. Move balanced_irq_init() to late_initcall so that kirqd will be started after pci quirks. Signed-off-by:
Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by:
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Oleg Nesterov authored
- valid_stack_ptr() erroneously assumes that stack always lives in task_struct->thread_info. - the main loop in show_trace() does not recalc ebp after stack switching. With CONFIG_FRAME_POINTER every call to print_context_stack() will produce the same output. With this patch, show_trace() does not use task argument in the main loop. Instead, it converts stack to thread_info* context, and passes it to print_context_stack() and (implicitly) to valid_stack_ptr(). valid_stack_ptr() now does bounds checking against proper context. Signed-off-by:
Oleg Nesterov <oleg@tv-sign.ru> Signed-off-by:
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Suresh B. Siddha authored
Some cache descriptors are missing from x86_64 table. So instead of copying from i386 code, here is a patch to share the table between i386 and x86_64. Signed-off-by:
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