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2008-04-26x86-64: extend MCE CPU quirk handlingJan Beulich
At least on my Barcelona, I see MCE log entries after cold boot caused by BIOS not properly clearing the respective registers. Therefore, this patch extends the workaround to families 0x10 and 0x11 (the latter just for completeness, I have nothing to verify this against). At the same time, provide a way to make these entries visible via the 'mce=bootlog' command line option even on these machines. Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-21Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-sched-devel * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-sched-devel: (62 commits) sched: build fix sched: better rt-group documentation sched: features fix sched: /debug/sched_features sched: add SCHED_FEAT_DEADLINE sched: debug: show a weight tree sched: fair: weight calculations sched: fair-group: de-couple load-balancing from the rb-trees sched: fair-group scheduling vs latency sched: rt-group: optimize dequeue_rt_stack sched: debug: add some debug code to handle the full hierarchy sched: fair-group: SMP-nice for group scheduling sched, cpuset: customize sched domains, core sched, cpuset: customize sched domains, docs sched: prepatory code movement sched: rt: multi level group constraints sched: task_group hierarchy sched: fix the task_group hierarchy for UID grouping sched: allow the group scheduler to have multiple levels sched: mix tasks and groups ...
2008-04-19generic: reduce stack pressure in sched_affinityMike Travis
* Modify sched_affinity functions to pass cpumask_t variables by reference instead of by value. * Use new set_cpus_allowed_ptr function. Depends on: [sched-devel]: sched: add new set_cpus_allowed_ptr function Cc: Paul Jackson <pj@sgi.com> Cc: Cliff Wickman <cpw@sgi.com> Signed-off-by: Mike Travis <travis@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-19x86: remove pointless commentsWANG Cong
Remove old comments that include the old arch/i386 directory. Signed-off-by: WANG Cong <xiyou.wangcong@gmail.com> Acked-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-17x86: coding style fixes to arch/x86/kernel/cpu/mcheck/mce_32.cPaolo Ciarrocchi
Before: total: 10 errors, 3 warnings, 90 lines checked After: total: 0 errors, 3 warnings, 90 lines checked No code changed: arch/x86/kernel/cpu/mcheck/mce_32.o: text data bss dec hex filename 287 42 12 341 155 mce_32.o.before 287 42 12 341 155 mce_32.o.after md5: fede5ff8e6bc3f62e8e691ca6c45eb39 mce_32.o.before.asm fede5ff8e6bc3f62e8e691ca6c45eb39 mce_32.o.after.asm Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: coding style fixes to arch/x86/kernel/cpu/mcheck/winchip.cPaolo Ciarrocchi
Before: total: 4 errors, 0 warnings, 36 lines checked After: total: 0 errors, 0 warnings, 36 lines checked No code changed: arch/x86/kernel/cpu/mcheck/winchip.o: text data bss dec hex filename 222 0 4 226 e2 winchip.o.before 222 0 4 226 e2 winchip.o.after md5: 9caefa12256c5f7d71ef324f6d01a2d5 winchip.o.before.asm 9caefa12256c5f7d71ef324f6d01a2d5 winchip.o.after.asm Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: coding style fixes to arch/x86/kernel/cpu/mcheck/non-fatal.cPaolo Ciarrocchi
Before: total: 5 errors, 5 warnings, 91 lines checked After: total: 0 errors, 0 warnings, 94 lines checked No code changed: arch/x86/kernel/cpu/mcheck/non-fatal.o: text data bss dec hex filename 441 80 4 525 20d non-fatal.o.before 441 80 4 525 20d non-fatal.o.after md5: 137bc114d2020ad331d5e76444a2c7d3 non-fatal.o.before.asm 137bc114d2020ad331d5e76444a2c7d3 non-fatal.o.after.asm Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: coding style fixes to arch/x86/kernel/cpu/mcheck/p6.cPaolo Ciarrocchi
Before: total: 16 errors, 13 warnings, 122 lines checked After: total: 0 errors, 0 warnings, 122 lines checked No code changed: arch/x86/kernel/cpu/mcheck/p6.o: text data bss dec hex filename 1082 0 8 1090 442 p6.o.before 1082 0 8 1090 442 p6.o.after md5: 4e283fbc1b68240f1724d9725007d379 p6.o.before.asm 4e283fbc1b68240f1724d9725007d379 p6.o.after.asm Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: coding style fixes to arch/x86/kernel/cpu/mcheck/p5.cPaolo Ciarrocchi
The patch make the file errors free. Only 4 "WARNING: line over 80 characters" left. arch/x86/kernel/cpu/mcheck/p5.o: text data bss dec hex filename 452 0 4 456 1c8 p5.o.before 452 0 4 456 1c8 p5.o.after md5: 50c945ef150aa95bf0481cc3e1dc3315 p5.o.before.asm 50c945ef150aa95bf0481cc3e1dc3315 p5.o.after.asm Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-02-09x86: sparse warning in therm_throt.cHarvey Harrison
arch/x86/kernel/cpu/mcheck/therm_throt.c:121:2: warning: returning void-valued expression Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: fix recursion in arch/x86/kernel/cpu/mcheck/mce_amd_64.cYinghai Lu
remove the recursion from this function. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: fix section mismatch warning in mcheck/mce_amd_64.cSam Ravnborg
Fix following warning: WARNING: arch/x86/kernel/cpu/mcheck/built-in.o(.text+0x1584): Section mismatch: reference to .cpuinit.text:threshold_create_device in 'threshold_cpu_callback' threshold_cpu_callback() is only used by threshold_cpu_notifier. threshold_cpu_notifier is only used for cpu hot plug as it is registered using register_hotcpu_notifier(). Mark them both __cpuinit to fix the warning. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: fix section mismatch warning in mcheck/mce_64.cSam Ravnborg
Fix following warning: WARNING: arch/x86/kernel/cpu/mcheck/built-in.o(.text+0x752): Section mismatch: reference to .cpuinit.text:mce_create_device in 'mce_cpu_callback' mce_cpu_callback() is only used by mce_cpu_notofier. The notifier is only used for hotplugable cpu's as it is registered using register_hotcpu_notifier(), Annotate them both __cpuinit to fix the warning. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: change x86 machine check handler to use unlocked_ioctl insteadNikanth Karthikesan
The machine check handler registers ioctl handler that is called with the BKL held. Changing to register unlocked_ioctl instead. Also mce ioctl handler does not seem to need any lock protection. To: Andi Kleen <andi@firstfloor.org> Cc: linux-kernel@vger.kernel.org Cc: kernel-janitors@vger.kernel.org Change the Machine check handler to use unlocked_ioctl instead of ioctl handler. Also the mce ioctl handler does not need any lock protection. Signed-off-by: Nikanth Karthikesan <knikanth@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: arch/x86/kernel/cpu/mcheck/k7.c checkpatch fixesAndrew Morton
#88: FILE: arch/x86/kernel/cpu/mcheck/k7.c:34: + rdmsr(MSR_IA32_MC0_STATUS+i*4,low, high); ^ ERROR: need space after that ',' (ctx:VxV) #142: FILE: arch/x86/kernel/cpu/mcheck/p4.c:170: + rdmsr(MSR_IA32_MC0_STATUS+i*4,low, high); ^ ERROR: need space after that ',' (ctx:VxV) #180: FILE: arch/x86/kernel/cpu/mcheck/p6.c:34: + rdmsr(MSR_IA32_MC0_STATUS+i*4,low, high); ^ total: 3 errors, 0 warnings, 114 lines checked Your patch has style problems, please review. If any of these errors are false positives report them to the maintainer, see CHECKPATCH in MAINTAINERS. Please run checkpatch prior to sending patches Cc: Min Zhang <mzhang@mvista.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: arch/x86/kernel/cpu/mcheck/ checkpatch fixesAndrew Morton
#40: FILE: arch/x86/kernel/cpu/mcheck/k7.c:46: + snprintf (misc, 20, "[%08x%08x]", ahigh, alow); WARNING: line over 80 characters #45: FILE: arch/x86/kernel/cpu/mcheck/k7.c:50: + snprintf (addr, 24, " at %08x%08x", ahigh, alow); WARNING: no space between function name and open parenthesis '(' #45: FILE: arch/x86/kernel/cpu/mcheck/k7.c:50: + snprintf (addr, 24, " at %08x%08x", ahigh, alow); WARNING: no space between function name and open parenthesis '(' #48: FILE: arch/x86/kernel/cpu/mcheck/k7.c:52: + printk (KERN_EMERG "CPU %d: Bank %d: %08x%08x%s%s\n", WARNING: no space between function name and open parenthesis '(' #65: FILE: arch/x86/kernel/cpu/mcheck/p4.c:161: + printk (KERN_DEBUG "CPU %d: EIP: %08x EFLAGS: %08x\n" WARNING: no space between function name and open parenthesis '(' #88: FILE: arch/x86/kernel/cpu/mcheck/p4.c:182: + snprintf (misc, 20, "[%08x%08x]", ahigh, alow); WARNING: line over 80 characters #93: FILE: arch/x86/kernel/cpu/mcheck/p4.c:186: + snprintf (addr, 24, " at %08x%08x", ahigh, alow); WARNING: no space between function name and open parenthesis '(' #93: FILE: arch/x86/kernel/cpu/mcheck/p4.c:186: + snprintf (addr, 24, " at %08x%08x", ahigh, alow); WARNING: no space between function name and open parenthesis '(' #96: FILE: arch/x86/kernel/cpu/mcheck/p4.c:188: + printk (KERN_EMERG "CPU %d: Bank %d: %08x%08x%s%s\n", WARNING: no space between function name and open parenthesis '(' #120: FILE: arch/x86/kernel/cpu/mcheck/p6.c:46: + snprintf (misc, 20, "[%08x%08x]", ahigh, alow); WARNING: line over 80 characters #125: FILE: arch/x86/kernel/cpu/mcheck/p6.c:50: + snprintf (addr, 24, " at %08x%08x", ahigh, alow); WARNING: no space between function name and open parenthesis '(' #125: FILE: arch/x86/kernel/cpu/mcheck/p6.c:50: + snprintf (addr, 24, " at %08x%08x", ahigh, alow); WARNING: no space between function name and open parenthesis '(' #128: FILE: arch/x86/kernel/cpu/mcheck/p6.c:52: + printk (KERN_EMERG "CPU %d: Bank %d: %08x%08x%s%s\n", total: 0 errors, 13 warnings, 100 lines checked Your patch has style problems, please review. If any of these errors are false positives report them to the maintainer, see CHECKPATCH in MAINTAINERS. Please run checkpatch prior to sending patches Cc: Min Zhang <mzhang@mvista.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30arch/x86/kernel/cpu/mcheck/p4.c: cleanupsMin Zhang
SMP, the machine check exception dispatches all logical processors within a physical package to the machine-check exception handler, so the printk within each handler outputs concurrently and makes the output unreadable. Refer to Intel system programming guide Part 1 Section 7.8.5 http://developer.intel.com/design/processor/manuals/253668.pdf Signed-off-by: Min Zhang <mzhang@mvista.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86-64: honor notify_die() returning NOTIFY_STOPJan Beulich
This requires making die() return a value, making its callers honor this (and be prepared that it may return), and making oops_end() have two additional parameters. Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30mcheck mce_64: mce_read_sem to mutexDaniel Walker
Converted to a mutex, and changed the name to mce_read_mutex. Signed-off-by: Daniel Walker <dwalker@mvista.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: remove all definitions with fastcallHarvey Harrison
fastcall is always defined to be empty, remove it from arch/x86 Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: rename the struct pt_regs members for 32/64-bit consistencyH. Peter Anvin
We have a lot of code which differs only by the naming of specific members of structures that contain registers. In order to enable additional unifications, this patch drops the e- or r- size prefix from the register names in struct pt_regs, and drops the x- prefixes for segment registers on the 32-bit side. This patch also performs the equivalent renames in some additional places that might be candidates for unification in the future. Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: add set/clear_cpu_cap operationsJeremy Fitzhardinge
The patch to suppress bitops-related warnings added a pile of ugly casts. Many of these were related to the management of x86 CPU capabilities. Clean these up by adding specific set/clear_cpu_cap macros, and use them consistently. Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: extended interrupt LVT support for AMD BarcelonaRobert Richter
Also macro definitions in apicdef.h has been updated. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86 mce_64.c: make struct mcelog staticAdrian Bunk
This patch makes the needlessly global struct mcelog static. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-01-30kobj: fix threshold_init_device/kobject_uevent_env oopsGreg KH
the logic in this function is just crazy. It's recursive, but we can circumvent the creation for the kobject and whole creation of the threshold_block if some conditions are met. That's why we see the allocate_threshold_blocks so many times in the callstack, yet only a few kobjects created. Then we blow up in kobject_uevent_env() on the first debug printk. Which means that we are just passing in garbage. Man, this is one time that comments in code would have been very nice to have, and why forward goto's into major code blocks are just evil... Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-24Driver core: change sysdev classes to use dynamic kobject namesKay Sievers
All kobjects require a dynamically allocated name now. We no longer need to keep track if the name is statically assigned, we can just unconditionally free() all kobject names on cleanup. Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-01-24Kobject: convert arch/* from kobject_unregister() to kobject_put()Greg Kroah-Hartman
There is no need for kobject_unregister() anymore, thanks to Kay's kobject cleanup changes, so replace all instances of it with kobject_put(). Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-01-24Kobject: change arch/x86/kernel/cpu/mcheck/mce_amd_64.c to use ↵Greg Kroah-Hartman
kobject_init_and_add Stop using kobject_register, as this way we can control the sending of the uevent properly, after everything is properly initialized. Cc: Jacob Shin <jacob.shin@amd.com> Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-01-24Kobject: change arch/x86/kernel/cpu/mcheck/mce_amd_64.c to use ↵Greg Kroah-Hartman
kobject_create_and_add Make this kobject dynamic and convert it to not use kobject_register, which is going away. Cc: Jacob Shin <jacob.shin@amd.com> Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-11-17x86: fix cpu-hotplug regressionAndreas Herrmann
Commit d435d862baca3e25e5eec236762a43251b1e7ffc ("cpu hotplug: mce: fix cpu hotplug error handling") changed the error handling in mce_cpu_callback. In cases where not all CPUs are brought up during boot (e.g. using maxcpus and additional_cpus parameters) mce_cpu_callback now returns NOTFIY_BAD because for such CPUs cpu_data is not completely filled when the notifier is called. Thus mce_create_device fails right at its beginning: if (!mce_available(&cpu_data[cpu])) return -EIO; As a quick fix I suggest to check boot_cpu_data for MCE. To reproduce this regression: (1) boot with maxcpus=2 addtional_cpus=2 on a 4 CPU x86-64 system (2) # echo 1 >/sys/devices/system/cpu/cpu2/online -bash: echo: write error: Invalid argument dmesg shows: _cpu_up: attempt to bring up CPU 2 failed Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2007-11-14x86: don't call mce_create_device on CPU_UP_PREPAREAndreas Herrmann
Fix regression introduced with d435d862baca3e25e5eec236762a43251b1e7ffc ("cpu hotplug: mce: fix cpu hotplug error handling"). A CPU which was not brought up during boot (using maxcpus and additional_cpus parameters) couldn't be onlined anymore. For such a CPU it seemed that MCE was not supported during CPU_UP_PREPARE-time which caused mce_cpu_callback to return NOTIFY_BAD to notifier_call_chain. To fix this we: - call mce_create_device for CPU_ONLINE event (instead of CPU_UP_PREPARE), - avoid mce_remove_device() for the CPU that is not correctly initialized by mce_create_device() failure, - make mce_cpu_callback always return NOTIFY_OK for CPU_ONLINE event. Because CPU_ONLINE callback return value is always ignored. [akinobu.mita@gmail.com: avoid mce_remove_device() for not initialized device] [akinobu.mita@gmail.com: make mce_cpu_callback always return NOTIFY_OK] Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-23x86: whitespace cleanup of mce_64.cThomas Gleixner
Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2007-10-23x86: consolidate the cpu/ related code usageThomas Gleixner
The x86_64 arch/x86/kernel/Makefile uses references into arch/x86/kernel/cpu/... to use code from there. Unifiy it with the nicely structured i386 way and reuse the existing subdirectory make rules. Also move the machine check related source into ...kernel/cpu/mcheck, where the other machine check related code is. No code change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-10-23x86: prepare consolidation of cpu/ related code usageThomas Gleixner
Move mce.c to mce_32.c to allow the later move of the x86_64 mce.c from arch/x86/kernel/ to ...kernel/cpu/mcheck No code change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-10-23x86: prepare consolidation of cpu/ related MakefilesThomas Gleixner
Prepare the makefiles in x86/kernel/cpu and x86/kernel/cpu/mcheck to be used by the x86_64 build as well. No code change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-10-18cpu hotplug: thermal_throttle: fix cpu hotplug error handlingAkinobu Mita
Do thermal_throttle_add_dev() in CPU_UP_PREPARE instead of CPU_ONLINE. Cc: Dmitriy Zavin <dmitriyz@google.com> Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: Gautham R Shenoy <ego@in.ibm.com> Cc: Oleg Nesterov <oleg@tv-sign.ru> Cc: Andi Kleen <ak@suse.de> Cc: Jan Beulich <jbeulich@novell.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17x86: expand /proc/interrupts to include missing vectors, v2Joe Korty
Add missing IRQs and IRQ descriptions to /proc/interrupts. /proc/interrupts is most useful when it displays every IRQ vector in use by the system, not just those somebody thought would be interesting. This patch inserts the following vector displays to the i386 and x86_64 platforms, as appropriate: rescheduling interrupts TLB flush interrupts function call interrupts thermal event interrupts threshold interrupts spurious interrupts A threshold interrupt occurs when ECC memory correction is occuring at too high a frequency. Thresholds are used by the ECC hardware as occasional ECC failures are part of normal operation, but long sequences of ECC failures usually indicate a memory chip that is about to fail. Thermal event interrupts occur when a temperature threshold has been exceeded for some CPU chip. IIRC, a thermal interrupt is also generated when the temperature drops back to a normal level. A spurious interrupt is an interrupt that was raised then lowered by the device before it could be fully processed by the APIC. Hence the apic sees the interrupt but does not know what device it came from. For this case the APIC hardware will assume a vector of 0xff. Rescheduling, call, and TLB flush interrupts are sent from one CPU to another per the needs of the OS. Typically, their statistics would be used to discover if an interrupt flood of the given type has been occuring. AK: merged v2 and v4 which had some more tweaks AK: replace Local interrupts with Local timer interrupts AK: Fixed description of interrupt types. [ tglx: arch/x86 adaptation ] [ mingo: small cleanup ] Signed-off-by: Joe Korty <joe.korty@ccur.com> Signed-off-by: Andi Kleen <ak@suse.de> Cc: Tim Hockin <thockin@hockin.org> Cc: Andi Kleen <ak@suse.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2007-10-17i386: Fix section mismatchSatyam Sharma
Fix bugzilla #8679 WARNING: arch/i386/kernel/built-in.o(.data+0x2148): Section mismatch: reference to .init.text: (between 'thermal_throttle_cpu_notifier' and 'mtrr_mutex') comes because struct notifier_block thermal_throttle_cpu_notifier in arch/i386/kernel/cpu/mcheck/therm_throt.c goes in .data section but the notifier callback function itself has been marked __cpuinit which becomes __init == .init.text when HOTPLUG_CPU=n. The warning is bogus because the callback will never be called out if HOTPLUG_CPU=n in the first place (as one can see from kernel/cpu.c, the cpu_chain itself is __cpuinitdata :-) So, let's mark thermal_throttle_cpu_notifier as __cpuinitdata to fix the section mismatch warning. [ tglx: arch/x86 adaptation ] Signed-off-by: Satyam Sharma <satyam@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2007-10-11i386: move kernel/cpu/mcheckThomas Gleixner
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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