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authorLinus Torvalds <torvalds@linux-foundation.org>2019-05-06 14:16:36 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2019-05-06 14:16:36 -0700
commit90489a72fba9529c85e051067ecb41183b8e982e (patch)
tree6c61660a380c3ddf25607b5892d173c3f4feb0d2 /kernel/events
parent007dc78fea62610bf06829e38f1d8c69b6ea5af6 (diff)
parentd15d356887e770c5f2dcf963b52c7cb510c9e42d (diff)
Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf updates from Ingo Molnar: "The main kernel changes were: - add support for Intel's "adaptive PEBS v4" - which embedds LBS data in PEBS records and can thus batch up and reduce the IRQ (NMI) rate significantly - reducing overhead and making call-graph profiling less intrusive. - add Intel CPU core and uncore support updates for Tremont, Icelake, - extend the x86 PMU constraints scheduler with 'constraint ranges' to better support Icelake hw constraints, - make x86 call-chain support work better with CONFIG_FRAME_POINTER=y - misc other changes Tooling changes: - updates to the main tools: 'perf record', 'perf trace', 'perf stat' - updated Intel and S/390 vendor events - libtraceevent updates - misc other updates and fixes" * 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (69 commits) perf/x86: Make perf callchains work without CONFIG_FRAME_POINTER watchdog: Fix typo in comment perf/x86/intel: Add Tremont core PMU support perf/x86/intel/uncore: Add Intel Icelake uncore support perf/x86/msr: Add Icelake support perf/x86/intel/rapl: Add Icelake support perf/x86/intel/cstate: Add Icelake support perf/x86/intel: Add Icelake support perf/x86: Support constraint ranges perf/x86/lbr: Avoid reading the LBRs when adaptive PEBS handles them perf/x86/intel: Support adaptive PEBS v4 perf/x86/intel/ds: Extract code of event update in short period perf/x86/intel: Extract memory code PEBS parser for reuse perf/x86: Support outputting XMM registers perf/x86/intel: Force resched when TFA sysctl is modified perf/core: Add perf_pmu_resched() as global function perf/headers: Fix stale comment for struct perf_addr_filter perf/core: Make perf_swevent_init_cpu() static perf/x86: Add sanity checks to x86_schedule_events() perf/x86: Optimize x86_schedule_events() ...
Diffstat (limited to 'kernel/events')
-rw-r--r--kernel/events/core.c12
1 files changed, 11 insertions, 1 deletions
diff --git a/kernel/events/core.c b/kernel/events/core.c
index dc7dead2d2cc..abbd4b3b96c2 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -2478,6 +2478,16 @@ static void ctx_resched(struct perf_cpu_context *cpuctx,
perf_pmu_enable(cpuctx->ctx.pmu);
}
+void perf_pmu_resched(struct pmu *pmu)
+{
+ struct perf_cpu_context *cpuctx = this_cpu_ptr(pmu->pmu_cpu_context);
+ struct perf_event_context *task_ctx = cpuctx->task_ctx;
+
+ perf_ctx_lock(cpuctx, task_ctx);
+ ctx_resched(cpuctx, task_ctx, EVENT_ALL|EVENT_CPU);
+ perf_ctx_unlock(cpuctx, task_ctx);
+}
+
/*
* Cross CPU call to install and enable a performance event
*
@@ -11917,7 +11927,7 @@ static void __init perf_event_init_all_cpus(void)
}
}
-void perf_swevent_init_cpu(unsigned int cpu)
+static void perf_swevent_init_cpu(unsigned int cpu)
{
struct swevent_htable *swhash = &per_cpu(swevent_htable, cpu);