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6809b6ea73
linux/arch/x86/kernel/cpu
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Peter Zijlstra 6809b6ea73 perf, x86: Less disastrous PEBS/BTS buffer allocation failure 
Currently PEBS/BTS buffers are allocated when we instantiate the first
event, when this fails everything fails.

This is a problem because esp. BTS tries to allocate a rather large
buffer (64K), which can easily fail.

This patch changes the logic such that when either buffer allocation
fails, we simply don't allow events that would use these facilities,
but continue functioning for all other events.

This logic comes from a much larger patch proposed by Stephane.

Suggested-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: Stephane Eranian <eranian@google.com>
LKML-Reference: <20101019134808.354429461@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-10-22 14:18:26 +02:00
..
cpufreq [CPUFREQ] Fix memory leaks in pcc_cpufreq_do_osc 2010-09-30 16:14:23 -04:00
mcheck Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2010-10-21 14:11:46 -07:00
mtrr Merge branch 'x86-mtrr-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2010-10-21 13:51:41 -07:00
.gitignore Update .gitignore files for generated targets 2008-10-20 11:24:31 -07:00
amd.c Merge branch 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2010-10-21 13:18:06 -07:00
bugs_64.c x86/cpu: Clean up various files a bit 2009-07-11 11:24:09 +02:00
bugs.c x86: Avoid check hlt for newer cpus 2010-05-07 15:31:17 -07:00
centaur.c x86, cpu: mv display_cacheinfo -> cpu_detect_cache_sizes 2009-11-23 11:59:53 -08:00
common.c Merge branch 'x86-fpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2010-10-21 13:34:32 -07:00
cpu.h Merge branch 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2010-10-21 13:18:36 -07:00
cyrix.c x86, cpu: mv display_cacheinfo -> cpu_detect_cache_sizes 2009-11-23 11:59:53 -08:00
hypervisor.c Introduce CONFIG_XEN_PVHVM compile option 2010-07-29 11:11:33 -07:00
intel_cacheinfo.c x86, k8: Rename k8.[ch] to amd_nb.[ch] and CONFIG_K8_NB to CONFIG_AMD_NB 2010-09-20 14:22:58 -07:00
intel.c Merge branch 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2010-10-21 13:18:06 -07:00
Makefile Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2010-08-06 10:07:34 -07:00
mkcapflags.pl
mshyperv.c x86: Export the symbol ms_hyperv 2010-07-08 14:12:03 -07:00
perf_event_amd.c perf_events: Fix bogus AMD64 generic TLB events 2010-10-18 19:58:48 +02:00
perf_event_intel_ds.c perf, x86: Less disastrous PEBS/BTS buffer allocation failure 2010-10-22 14:18:26 +02:00
perf_event_intel_lbr.c perf, x86: Clean up debugctlmsr bit definitions 2010-03-26 09:41:03 +01:00
perf_event_intel.c perf_events: Fix BTS interrupt handling to avoid being dazed by NMI (v2) 2010-09-13 08:43:40 +02:00
perf_event_p4.c Merge branch 'perf/urgent' into perf/core 2010-10-05 09:47:14 +02:00
perf_event_p6.c perf, x86: Fix __initconst vs const 2010-04-02 19:52:05 +02:00
perf_event.c perf, x86: Less disastrous PEBS/BTS buffer allocation failure 2010-10-22 14:18:26 +02:00
perfctr-watchdog.c x86, nmi: Support NMI watchdog on newer AMD CPU families 2010-10-01 16:18:32 -07:00
powerflags.c
proc.c Merge branch 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-09-14 07:57:32 -07:00
scattered.c Merge branch 'x86-amd-nb-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2010-10-21 13:01:08 -07:00
sched.c sched: x86: Name old_perf in a unique way 2009-09-16 11:21:07 +02:00
topology.c x86, cpu: Split addon_cpuid_features.c 2010-07-19 19:02:41 -07:00
transmeta.c x86, cpu: mv display_cacheinfo -> cpu_detect_cache_sizes 2009-11-23 11:59:53 -08:00
umc.c x86: move various CPU initialization objects into .cpuinit.rodata 2009-03-12 13:13:07 +01:00
vmware.c x86, vmware: Preset lpj values when on VMware. 2010-08-02 17:16:30 -07:00