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4485154138
linux/arch/x86/kernel/cpu
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David Rientjes 4485154138 perf/x86/intel: Avoid spamming kernel log for BTS buffer failure 
It's unnecessary to excessively spam the kernel log anytime the BTS buffer
cannot be allocated, so make this allocation __GFP_NOWARN.

The user probably will want to at least find some artifact that the
allocation has failed in the past, probably due to fragmentation because
of its large size, when it's not allocated at bootstrap.  Thus, add a
WARN_ONCE() so something is left behind for them to understand why perf
commnads that require PEBS is not working properly.

Signed-off-by: David Rientjes <rientjes@google.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: http://lkml.kernel.org/r/alpine.DEB.2.02.1406301600460.26302@chino.kir.corp.google.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-07-16 13:31:30 +02:00
..
mcheck hwpoison: remove unused global variable in do_machine_check() 2014-06-04 16:54:11 -07:00
microcode x86, microcode: Add a disable chicken bit 2014-05-20 20:21:27 -07:00
mtrr mm, x86: Account for TLB flushes only when debugging 2014-01-25 09:10:41 +01:00
.gitignore
amd.c Rename TAINT_UNSAFE_SMP to TAINT_CPU_OUT_OF_SPEC 2014-03-20 16:28:09 -07:00
bugs_64.c x86/cpu: Clean up various files a bit 2009-07-11 11:24:09 +02:00
bugs.c x86: Get rid of ->hard_math and all the FPU asm fu 2013-06-06 14:32:04 -07:00
centaur.c x86: Remove CONFIG_X86_OOSTORE 2014-03-11 10:16:18 -07:00
common.c Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2014-06-12 19:18:49 -07:00
cpu.h x86/cpu: Track legacy CPU model data only on 32-bit kernels 2013-10-26 13:34:39 +02:00
cyrix.c x86: Delete non-required instances of include <linux/init.h> 2014-01-06 21:25:18 -08:00
hypervisor.c x86: Correctly detect hypervisor 2013-08-05 06:35:33 -07:00
intel_cacheinfo.c x86, intel, cacheinfo: Fix CPU hotplug callback registration 2014-03-20 13:43:43 +01:00
intel.c Merge branch 'x86-nuke-platforms-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2014-04-02 13:15:58 -07:00
Makefile Merge branch 'x86-microcode-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2014-01-20 12:07:54 -08:00
match.c x86: align x86 arch with generic CPU modalias handling 2014-02-18 12:45:38 -08:00
mkcapflags.sh mkcapflags.pl: convert to mkcapflags.sh 2013-04-29 15:54:27 -07:00
mshyperv.c x86, irq, pic: Probe for legacy PIC and set legacy_pic appropriately 2014-04-14 11:49:55 -07:00
perf_event_amd_ibs.c kprobes, x86: Use NOKPROBE_SYMBOL() instead of __kprobes annotation 2014-04-24 10:26:38 +02:00
perf_event_amd_iommu.c perf/x86/amd: Do not print an error when the device is not present 2013-07-05 08:27:15 +02:00
perf_event_amd_iommu.h perf/x86/amd: AMD IOMMU Performance Counter PERF uncore PMU implementation 2013-06-19 13:04:53 +02:00
perf_event_amd_uncore.c x86, amd, uncore: Fix CPU hotplug callback registration 2014-03-20 13:43:43 +01:00
perf_event_amd.c perf: Convert kmalloc_node(...GFP_ZERO...) to kzalloc_node() 2013-09-02 08:42:49 +02:00
perf_event_intel_ds.c perf/x86/intel: Avoid spamming kernel log for BTS buffer failure 2014-07-16 13:31:30 +02:00
perf_event_intel_lbr.c perf/x86: Add conditional branch filtering support 2014-06-05 12:30:23 +02:00
perf_event_intel_rapl.c perf/x86: Fix RAPL rdmsrl_safe() usage 2014-04-24 08:12:41 +02:00
perf_event_intel_uncore.c perf/x86/intel/uncore: Fix SNB-EP/IVT Cbox filter mappings 2014-07-16 13:18:41 +02:00
perf_event_intel_uncore.h perf/x86/uncore: add hrtimer to SNB uncore IMC PMU 2014-02-21 21:49:08 +01:00
perf_event_intel.c perf/x86/intel: Protect LBR and extra_regs against KVM lying 2014-07-16 13:18:43 +02:00
perf_event_knc.c x86: Constify a few items 2013-03-11 15:11:03 +01:00
perf_event_p4.c perf/x86/p4: Block PMIs on init to prevent a stream of unkown NMIs 2014-02-09 13:20:35 +01:00
perf_event_p6.c perf/x86/intel/p6: Add userspace RDPMC quirk for PPro 2014-02-09 13:08:24 +01:00
perf_event.c perf/x86/intel: Protect LBR and extra_regs against KVM lying 2014-07-16 13:18:43 +02:00
perf_event.h perf/x86/intel: Protect LBR and extra_regs against KVM lying 2014-07-16 13:18:43 +02:00
perfctr-watchdog.c perf/x86: Add support for Intel Xeon-Phi Knights Corner PMU 2012-10-04 13:32:37 +02:00
powerflags.c update AMD powerflags comments 2013-05-28 12:02:10 +02:00
proc.c x86/cpu: Always print SMP information in /proc/cpuinfo 2013-11-06 08:13:56 +01:00
rdrand.c x86, rdrand: When nordrand is specified, disable RDSEED as well 2014-05-11 20:25:20 -07:00
scattered.c treewide: Fix common typo in "identify" 2013-10-14 15:31:06 +02:00
topology.c x86: delete __cpuinit usage from all x86 files 2013-07-14 19:36:56 -04:00
transmeta.c x86: Delete non-required instances of include <linux/init.h> 2014-01-06 21:25:18 -08:00
umc.c x86: Delete non-required instances of include <linux/init.h> 2014-01-06 21:25:18 -08:00
vmware.c x86: Correctly detect hypervisor 2013-08-05 06:35:33 -07:00