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| author | Vince Weaver <vincent.weaver@maine.edu> | 2012-10-19 17:33:38 -0400 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2012-10-24 10:32:00 +0200 |
| commit | 58e9eaf06f5476cb2192ec1d012674ce5e79dd21 (patch) | |
| tree | 9e5d64ad3aa856c29b39c941bae67490e89b87dd /arch/x86/power | |
| parent | e09df47885d767e418902067ce1885aafa3b27db (diff) | |
| download | kernel_goldelico_gta04-58e9eaf06f5476cb2192ec1d012674ce5e79dd21.zip kernel_goldelico_gta04-58e9eaf06f5476cb2192ec1d012674ce5e79dd21.tar.gz kernel_goldelico_gta04-58e9eaf06f5476cb2192ec1d012674ce5e79dd21.tar.bz2 | |
perf/x86: Remove P6 cpuc->enabled check
Between 2.6.33 and 2.6.34 the PMU code was made modular.
The x86_pmu_enable() call was extended to disable cpuc->enabled
and iterate the counters, enabling one at a time, before calling
enable_all() at the end, followed by re-enabling cpuc->enabled.
Since cpuc->enabled was set to 0, that change effectively caused
the "val |= ARCH_PERFMON_EVENTSEL_ENABLE;" code in p6_pmu_enable_event()
and p6_pmu_disable_event() to be dead code that was never called.
This change removes this code (which was confusing) and adds some
extra commentary to make it more clear what is going on.
Signed-off-by: Vince Weaver <vincent.weaver@maine.edu>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/alpine.DEB.2.02.1210191732000.14552@vincent-weaver-1.um.maine.edu
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/power')
0 files changed, 0 insertions, 0 deletions