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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
..
bpf Merge branch 'perf/urgent' into perf/core, to pick up fixes before merging new changes 2016-07-07 08:58:23 +02:00
configs
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debug
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events Merge branch 'perf/urgent' into perf/core, to pick up fixes before merging new changes 2016-07-07 08:58:23 +02:00
gcov
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irq
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livepatch
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locking
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power
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printk
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rcu
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sched
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time
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trace Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-06-29 11:50:42 -07:00
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Kconfig.freezer
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Kconfig.hz
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Kconfig.locks
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Kconfig.preempt
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Makefile
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acct.c
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async.c
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audit.c Merge branch 'stable-4.7' of git://git.infradead.org/users/pcmoore/audit 2016-06-29 15:18:47 -07:00
audit.h
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audit_fsnotify.c
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audit_tree.c
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audit_watch.c
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auditfilter.c
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auditsc.c Merge branch 'stable-4.7' of git://git.infradead.org/users/pcmoore/audit 2016-06-29 15:18:47 -07:00
backtracetest.c
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bounds.c
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capability.c
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cgroup.c
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cgroup_freezer.c
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cgroup_pids.c
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configs.c
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cpu.c
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cpuset.c
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cred.c
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exit.c
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extable.c
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futex.c
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futex_compat.c
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groups.c
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hung_task.c
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kmod.c
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kprobes.c
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ksysfs.c
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kthread.c
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latencytop.c
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membarrier.c
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module.c
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module_signing.c
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nsproxy.c
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padata.c
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panic.c
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params.c
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pid.c
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pid_namespace.c
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profile.c
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ptrace.c
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range.c
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reboot.c
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relay.c
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resource.c
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seccomp.c
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signal.c
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smp.c
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smpboot.c
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smpboot.h
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softirq.c
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stacktrace.c
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stop_machine.c
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sys.c
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sys_ni.c
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sysctl.c
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sysctl_binary.c
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task_work.c
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taskstats.c
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test_kprobes.c
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torture.c
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tracepoint.c
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tsacct.c
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uid16.c
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up.c
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user-return-notifier.c
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user.c
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user_namespace.c
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utsname.c
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utsname_sysctl.c
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watchdog.c Revert "perf/x86/intel, watchdog: Switch NMI watchdog to ref cycles on x86" 2016-07-10 20:58:36 +02:00
workqueue.c
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workqueue_internal.h
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