diff options
| author | Andi Kleen <ak@linux.intel.com> | 2014-09-04 16:08:29 -0700 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2014-09-24 14:48:24 +0200 |
| commit | b10fc1c3e30c44033d1cb1d2900cc2ab06dff342 (patch) | |
| tree | cd65fb437c894bd7ba3fab0fbc7ccad09d8fbe61 /arch/x86/kernel/cpu/perf_event_intel_uncore_snbep.c | |
| parent | 7e96ae1a8915e7064091ab75857f8c63334ea28d (diff) | |
perf/x86/intel/uncore: Fix PCU filter setup for Sandy/Ivy/Haswell EP
The PCU frequency band filters use 8 bit each in a register.
When setting up the value the shift value was not correctly
scaled, which resulted in all filters except for band 0 to
be zero. Fix the scaling.
This allows to correctly monitor multiple uncore frequency bands.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: eranian@google.com
Link: http://lkml.kernel.org/r/1409872109-31645-5-git-send-email-andi@firstfloor.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/kernel/cpu/perf_event_intel_uncore_snbep.c')
| -rw-r--r-- | arch/x86/kernel/cpu/perf_event_intel_uncore_snbep.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kernel/cpu/perf_event_intel_uncore_snbep.c b/arch/x86/kernel/cpu/perf_event_intel_uncore_snbep.c index b237abc27ce6..adf138eac85c 100644 --- a/arch/x86/kernel/cpu/perf_event_intel_uncore_snbep.c +++ b/arch/x86/kernel/cpu/perf_event_intel_uncore_snbep.c @@ -841,7 +841,7 @@ static int snbep_pcu_hw_config(struct intel_uncore_box *box, struct perf_event * if (ev_sel >= 0xb && ev_sel <= 0xe) { reg1->reg = SNBEP_PCU_MSR_PMON_BOX_FILTER; reg1->idx = ev_sel - 0xb; - reg1->config = event->attr.config1 & (0xff << reg1->idx); + reg1->config = event->attr.config1 & (0xff << (reg1->idx * 8)); } return 0; } |