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Ingo Molnar 44530d588e Revert "perf/x86/intel, watchdog: Switch NMI watchdog to ref cycles on x86" 
This reverts commit 2c95afc1e8.

Stephane reported the following regression:

 > Since Andi added:
 >
 > commit 2c95afc1e8
 > Author: Andi Kleen <ak@linux.intel.com>
 > Date:   Thu Jun 9 06:14:38 2016 -0700
 >
 >    perf/x86/intel, watchdog: Switch NMI watchdog to ref cycles on x86
 >
 > $ perf stat -e ref-cycles ls
 >   <not counted> ....
 >
 > fails systematically because the ref-cycles is now used by the
 > watchdog and given this is a system-wide pinned event, it monopolizes
 > the fixed counter 2 which is the only counter able to measure this event.

Since the next merge window is near, fix the regression for now
by reverting the commit.

Reported-by: Stephane Eranian <eranian@google.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
 		2016-07-10 20:58:36 +02:00
..
acpi Merge branches 'acpica-fixes', 'acpi-video' and 'acpi-processor' 2016-06-03 22:35:05 +02:00
asm-generic locking/qspinlock: Fix spin_unlock_wait() some more 2016-06-08 14:29:08 +02:00
clocksource clocksource: arm_arch_timer: Remove arch_timer_get_timecounter 2016-05-03 12:54:21 +02:00
crypto Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security 2016-05-19 09:21:36 -07:00
drm drm/i915: Removing PCI IDs that are no longer listed as Kabylake. 2016-06-29 12:19:13 +03:00
dt-bindings Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux 2016-05-26 09:23:43 -07:00
keys
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kvm arm64: KVM: fix build with CONFIG_ARM_PMU disabled 2016-06-27 12:55:51 +02:00
linux Revert "perf/x86/intel, watchdog: Switch NMI watchdog to ref cycles on x86" 2016-07-10 20:58:36 +02:00
math-emu
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media Update my main e-mails at the Kernel tree 2016-06-15 15:35:37 -10:00
memory
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misc cxl: Add kernel API to allow a context to operate with relocate disabled 2016-05-11 21:54:10 +10:00
net act_ife: only acquire tcf_lock for existing actions 2016-06-23 12:02:36 -04:00
pcmcia
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ras
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rdma IB/rdmavt: Correct qp_priv_alloc() return value test 2016-06-23 10:16:15 -04:00
rxrpc
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scsi Merge branch '4.7/scsi-queue' of git://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi into for-4.7-zac 2016-05-09 12:34:39 -04:00
soc ARC updates for 4.7-rc1 2016-05-19 09:46:18 -07:00
sound ASoC: Updates for v4.7 2016-05-16 14:59:00 +02:00
target Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 2016-05-28 12:04:17 -07:00
trace - move kvm_stat tool from QEMU repo into tools/kvm/kvm_stat 2016-05-27 13:41:54 -07:00
uapi Merge branch 'perf/urgent' into perf/core, to pick up fixes before merging new changes 2016-07-07 08:58:23 +02:00
video imx-drm probing fix 2016-05-25 12:36:20 +10:00
xen
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Kbuild
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