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Groups > linux.kernel > #1453563
| From | David Carrillo-Cisneros <davidcc@google.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH 0/3] remove unnecessary IPI reading uncore events |
| Date | 2016-08-02 05:20 +0200 |
| Message-ID | <s1ypj-786-3@gated-at.bofh.it> (permalink) |
| Organization | linux.* mail to news gateway |
This patch series adds a new flag to the struct perf_event (and a flag field to store it) to allow a PMU to tag a CPU or cgroup event as readable from any CPU in the same package and not just the CPU the event is attached to, even if the event is not currently active. This capability is used with uncore events to potentially avoid an unnecessary IPI when executing perf_event_read. A previous version of this change was introduced in the last Intel's CQM/CMT driver series (under review), but now we present it separately here since it is also useful for other uncore events. The next version of Intel CQM/CMT will add 2 new flags that use the pmu_event_flags field (added in patch 01 in this series). Patches rebased at peterz/queue/perf/core David Carrillo-Cisneros (3): perf/core: check return value of perf_event_read IPI perf/core: introduce pmu_event_flags and PMUEF_READ_CPU_PKG perf/x86: use PMUEF_READ_CPU_PKG in uncore events arch/x86/events/intel/rapl.c | 2 ++ arch/x86/events/intel/uncore.c | 2 ++ arch/x86/events/intel/uncore_snb.c | 2 ++ include/linux/perf_event.h | 12 ++++++++ kernel/events/core.c | 60 ++++++++++++++++++++++++++++++-------- 5 files changed, 66 insertions(+), 12 deletions(-) -- 2.8.0.rc3.226.g39d4020
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[PATCH 0/3] remove unnecessary IPI reading uncore events David Carrillo-Cisneros <davidcc@google.com> - 2016-08-02 05:20 +0200
[PATCH 3/3] perf/x86: use PMUEF_READ_CPU_PKG in uncore events David Carrillo-Cisneros <davidcc@google.com> - 2016-08-02 05:20 +0200
[PATCH 2/3] perf/core: introduce pmu_event_flags and PMUEF_READ_CPU_PKG David Carrillo-Cisneros <davidcc@google.com> - 2016-08-02 05:20 +0200
Re: [PATCH 2/3] perf/core: introduce pmu_event_flags and PMUEF_READ_CPU_PKG Peter Zijlstra <peterz@infradead.org> - 2016-08-04 17:10 +0200
Re: [PATCH 2/3] perf/core: introduce pmu_event_flags and PMUEF_READ_CPU_PKG David Carrillo-Cisneros <davidcc@google.com> - 2016-08-04 19:30 +0200
Re: [PATCH 2/3] perf/core: introduce pmu_event_flags and PMUEF_READ_CPU_PKG Peter Zijlstra <peterz@infradead.org> - 2016-08-04 17:10 +0200
Re: [PATCH 2/3] perf/core: introduce pmu_event_flags and PMUEF_READ_CPU_PKG Peter Zijlstra <peterz@infradead.org> - 2016-08-04 19:30 +0200
Re: [PATCH 2/3] perf/core: introduce pmu_event_flags and PMUEF_READ_CPU_PKG David Carrillo-Cisneros <davidcc@google.com> - 2016-08-04 19:50 +0200
Re: [PATCH 2/3] perf/core: introduce pmu_event_flags and PMUEF_READ_CPU_PKG David Carrillo-Cisneros <davidcc@google.com> - 2016-08-04 19:40 +0200
Re: [PATCH 2/3] perf/core: introduce pmu_event_flags and PMUEF_READ_CPU_PKG Peter Zijlstra <peterz@infradead.org> - 2016-08-04 17:50 +0200
[PATCH 1/3] perf/core: check return value of perf_event_read IPI David Carrillo-Cisneros <davidcc@google.com> - 2016-08-02 06:40 +0200
Re: [PATCH 0/3] remove unnecessary IPI reading uncore events Andi Kleen <ak@linux.intel.com> - 2016-08-02 17:30 +0200
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