• Linus Torvalds's avatar
    Merge tag 'trace-v4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace · 2dcd9c71
    Linus Torvalds authored
    Pull tracing updates from
     - allow module init functions to be traced
     - clean up some unused or not used by config events (saves space)
     - clean up of trace histogram code
     - add support for preempt and interrupt enabled/disable events
     - other various clean ups
    * tag 'trace-v4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: (30 commits)
      tracing, thermal: Hide cpu cooling trace events when not in use
      tracing, thermal: Hide devfreq trace events when not in use
      ftrace: Kill FTRACE_OPS_FL_PER_CPU
      perf/ftrace: Small cleanup
      perf/ftrace: Fix function trace events
      perf/ftrace: Revert ("perf/ftrace: Fix double traces of perf on ftrace:function")
      tracing, dma-buf: Remove unused trace event dma_fence_annotate_wait_on
      tracing, memcg, vmscan: Hide trace events when not in use
      tracing/xen: Hide events that are not used when X86_PAE is not defined
      tracing: mark trace_test_buffer as __maybe_unused
      printk: Remove superfluous memory barriers from printk_safe
      ftrace: Clear hashes of stale ips of init memory
      tracing: Add support for preempt and irq enable/disable events
      tracing: Prepare to add preempt and irq trace events
      ftrace/kallsyms: Have /proc/kallsyms show saved mod init functions
      ftrace: Add freeing algorithm to free ftrace_mod_maps
      ftrace: Save module init functions kallsyms symbols for tracing
      ftrace: Allow module init functions to be traced
      ftrace: Add a ftrace_free_mem() function for modules to use
      tracing: Reimplement log2
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