[Lldb-commits] [PATCH] D130805: Support a new kernel section in LLDB’s trace bundle schema

[Sujin Park via Phabricator via lldb-commits]

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Add a new "kernel" section with following schema.

  "kernel": {
    "loadAddress"?: decimal | hex string | string decimal 
    # This is optional. If it's not specified, use default address 0xffffffff81000000.
    "file": string
    # path to the kernel image
  }

Here's more details of the diff:

- If "kernel" section exist, it means current tracing mode is //KernelMode//.
- If tracing mode is //KernelMode//, the "processes" section must be empty and the "kernel" and "cpus" section must be provided. This is tested with `TestTraceLoad`.
- "kernel" section is parsed and turned into a new process with a single module which is the kernel image. The kernel process has N fake threads, one for each cpu.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D130805

Files:
  lldb/source/Plugins/Trace/intel-pt/TraceIntelPT.cpp
  lldb/source/Plugins/Trace/intel-pt/TraceIntelPT.h
  lldb/source/Plugins/Trace/intel-pt/TraceIntelPTBundleLoader.cpp
  lldb/source/Plugins/Trace/intel-pt/TraceIntelPTBundleLoader.h
  lldb/source/Plugins/Trace/intel-pt/TraceIntelPTBundleSaver.cpp
  lldb/source/Plugins/Trace/intel-pt/TraceIntelPTConstants.h
  lldb/source/Plugins/Trace/intel-pt/TraceIntelPTJSONStructs.cpp
  lldb/source/Plugins/Trace/intel-pt/TraceIntelPTJSONStructs.h
  lldb/test/API/commands/trace/TestTraceLoad.py
  lldb/test/API/commands/trace/intelpt-kernel-trace/cores/45.intelpt_trace
  lldb/test/API/commands/trace/intelpt-kernel-trace/cores/45.perf_context_switch_trace
  lldb/test/API/commands/trace/intelpt-kernel-trace/cores/51.intelpt_trace
  lldb/test/API/commands/trace/intelpt-kernel-trace/cores/51.perf_context_switch_trace
  lldb/test/API/commands/trace/intelpt-kernel-trace/modules/m.out
  lldb/test/API/commands/trace/intelpt-kernel-trace/trace.json
  lldb/test/API/commands/trace/intelpt-kernel-trace/trace_kernel_with_process.json
  lldb/test/API/commands/trace/intelpt-kernel-trace/trace_kernel_wo_cpus.json

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