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    Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 31486372
    Linus Torvalds authored
    Pull perf updates from Ingo Molnar:
     "The main changes in this cycle were:
    
      Kernel:
    
       - kprobes updates: use better W^X patterns for code modifications,
         improve optprobes, remove jprobes. (Masami Hiramatsu, Kees Cook)
    
       - core fixes: event timekeeping (enabled/running times statistics)
         fixes, perf_event_read() locking fixes and cleanups, etc. (Peter
         Zijlstra)
    
       - Extend x86 Intel free-running PEBS support and support x86
         user-register sampling in perf record and perf script. (Andi Kleen)
    
      Tooling:
    
       - Completely rework the way inline frames are handled. Instead of
         querying for the inline nodes on-demand in the individual tools, we
         now create proper callchain nodes for inlined frames. (Milian
         Wolff)
    
       - 'perf trace' updates (Arnaldo Carvalho de Melo)
    
       - Implement a way to print formatted output to per-event files in
         'perf script' to facilitate generate flamegraphs, elliminating the
         need to write scripts to do that separation (yuzhoujian, Arnaldo
         Carvalho de Melo)
    
       - Update vendor events JSON metrics for Intel's Broadwell, Broadwell
         Server, Haswell, Haswell Server, IvyBridge, IvyTown, JakeTown,
         Sandy Bridge, Skylake, SkyLake Server - and Goldmont Plus V1 (Andi
         Kleen, Kan Liang)
    
       - Multithread the synthesizing of PERF_RECORD_ events for
         pre-existing threads in 'perf top', speeding up that phase, greatly
         improving the user experience in systems such as Intel's Knights
         Mill (Kan Liang)
    
       - Introduce the concept of weak groups in 'perf stat': try to set up
         a group, but if it's not schedulable fallback to not using a group.
         That gives us the best of both worlds: groups if they work, but
         still a usable fallback if they don't. E.g: (Andi Kleen)
    
       - perf sched timehist enhancements (David Ahern)
    
       - ... various other enhancements, updates, cleanups and fixes"
    
    * 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (139 commits)
      kprobes: Don't spam the build log with deprecation warnings
      arm/kprobes: Remove jprobe test case
      arm/kprobes: Fix kretprobe test to check correct counter
      perf srcline: Show correct function name for srcline of callchains
      perf srcline: Fix memory leak in addr2inlines()
      perf trace beauty kcmp: Beautify arguments
      perf trace beauty: Implement pid_fd beautifier
      tools include uapi: Grab a copy of linux/kcmp.h
      perf callchain: Fix double mapping al->addr for children without self period
      perf stat: Make --per-thread update shadow stats to show metrics
      perf stat: Move the shadow stats scale computation in perf_stat__update_shadow_stats
      perf tools: Add perf_data_file__write function
      perf tools: Add struct perf_data_file
      perf tools: Rename struct perf_data_file to perf_data
      perf script: Print information about per-event-dump files
      perf trace beauty prctl: Generate 'option' string table from kernel headers
      tools include uapi: Grab a copy of linux/prctl.h
      perf script: Allow creating per-event dump files
      perf evsel: Restore evsel->priv as a tool private area
      perf script: Use event_format__fprintf()
      ...
    31486372