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Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Browse Source 
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()
  ...
This commit is contained in:
Linus Torvalds
2019-05-06 14:16:36 -07:00
parent 007dc78fea d15d356887
commit 90489a72fb
140 changed files with 13693 additions and 8444 deletions
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12
kernel/events/core.c
View File

@@ -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);

2
kernel/watchdog.c
View File

@@ -590,7 +590,7 @@ static void lockup_detector_reconfigure(void)
* Create the watchdog thread infrastructure and configure the detector(s).
*
* The threads are not unparked as watchdog_allowed_mask is empty. When
* the threads are sucessfully initialized, take the proper locks and
* the threads are successfully initialized, take the proper locks and
* unpark the threads in the watchdog_cpumask if the watchdog is enabled.
*/
static __init void lockup_detector_setup(void)