• Linus Torvalds's avatar
    Merge tag 'perf-core-2021-02-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · d310ec03
    Linus Torvalds authored
    Pull performance event updates from Ingo Molnar:
    
     - Add CPU-PMU support for Intel Sapphire Rapids CPUs
    
     - Extend the perf ABI with PERF_SAMPLE_WEIGHT_STRUCT, to offer
       two-parameter sampling event feedback. Not used yet, but is intended
       for Golden Cove CPU-PMU, which can provide both the instruction
       latency and the cache latency information for memory profiling
       events.
    
     - Remove experimental, default-disabled perfmon-v4 counter_freezing
       support that could only be enabled via a boot option. The hardware is
       hopelessly broken, we'd like to make sure nobody starts relying on
       this, as it would only end in tears.
    
     - Fix energy/power events on Intel SPR platforms
    
     - Simplify the uprobes resume_execution() logic
    
     - Misc smaller fixes.
    
    * tag 'perf-core-2021-02-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
      perf/x86/rapl: Fix psys-energy event on Intel SPR platform
      perf/x86/rapl: Only check lower 32bits for RAPL energy counters
      perf/x86/rapl: Add msr mask support
      perf/x86/kvm: Add Cascade Lake Xeon steppings to isolation_ucodes[]
      perf/x86/intel: Support CPUID 10.ECX to disable fixed counters
      perf/x86/intel: Add perf core PMU support for Sapphire Rapids
      perf/x86/intel: Filter unsupported Topdown metrics event
      perf/x86/intel: Factor out intel_update_topdown_event()
      perf/core: Add PERF_SAMPLE_WEIGHT_STRUCT
      perf/intel: Remove Perfmon-v4 counter_freezing support
      x86/perf: Use static_call for x86_pmu.guest_get_msrs
      perf/x86/intel/uncore: With > 8 nodes, get pci bus die id from NUMA info
      perf/x86/intel/uncore: Store the logical die id instead of the physical die id.
      x86/kprobes: Do not decode opcode in resume_execution()
    d310ec03
kernel-parameters.txt 213 KB