[all-commits] [llvm/llvm-project] 9f9464: [trace][intel pt] Measure the time it takes to dec...

[walter erquinigo via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 9f9464e02adaeb0a56211db35e8d22929ef3191f
      https://github.com/llvm/llvm-project/commit/9f9464e02adaeb0a56211db35e8d22929ef3191f
  Author: Peicong Wu <wupeicong at fb.com>
  Date:   2022-07-13 (Wed, 13 Jul 2022)

  Changed paths:
    M lldb/source/Plugins/Trace/intel-pt/TaskTimer.h
    M lldb/source/Plugins/Trace/intel-pt/ThreadDecoder.cpp
    M lldb/source/Plugins/Trace/intel-pt/TraceIntelPT.cpp
    M lldb/source/Plugins/Trace/intel-pt/TraceIntelPT.h
    M lldb/source/Plugins/Trace/intel-pt/TraceIntelPTMultiCpuDecoder.cpp

  Log Message:
  -----------
  [trace][intel pt] Measure the time it takes to decode a thread in per-cpu mode

This metric was missing. We were only measuring in per-thread mode, and
this completes the work.

For a sample trace I have, the `dump info` command shows

```
Timing for this thread:
    Decoding instructions: 0.12s

```

I also improved a bit the TaskTime function so that callers don't need to
specify the template argument

Differential Revision: https://reviews.llvm.org/D129249