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Subject[PATCH V2 6/6] perf/x86/intel/uncore: do not implicitly set uncore event cpu
Date
From: Kan Liang <kan.liang@intel.com>

There is cpumask exposed to the uncore pmu sysfs directory. User should
set the cpu according to the cpumask. Kernel should not implicitly
change the event->cpu.

Signed-off-by: Kan Liang <kan.liang@intel.com>
---
arch/x86/kernel/cpu/perf_event_intel_uncore.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/arch/x86/kernel/cpu/perf_event_intel_uncore.c b/arch/x86/kernel/cpu/perf_event_intel_uncore.c
index c635b8b..cd80731 100644
--- a/arch/x86/kernel/cpu/perf_event_intel_uncore.c
+++ b/arch/x86/kernel/cpu/perf_event_intel_uncore.c
@@ -621,9 +621,8 @@ static int uncore_pmu_event_init(struct perf_event *event)
if (event->cpu < 0)
return -EINVAL;
box = uncore_pmu_to_box(pmu, event->cpu);
- if (!box || box->cpu < 0)
+ if (!box || box->cpu < 0 || (box->cpu != event->cpu))
return -EINVAL;
- event->cpu = box->cpu;

event->hw.idx = -1;
event->hw.last_tag = ~0ULL;
--
1.8.3.1


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