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| author | Andi Kleen <ak@linux.intel.com> | 2012-08-09 08:31:00 -0700 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2012-08-13 14:55:02 -0300 |
| commit | 0fe7d7e9761ec7e23350b5543ddac470bb3cde1e (patch) | |
| tree | 2ed713988e611e731b5cce1aba1f907b64018383 /tools/perf | |
| parent | 3aafe5ae08f2aed378e06d78b207883879d25cbe (diff) | |
| download | blackbird-op-linux-0fe7d7e9761ec7e23350b5543ddac470bb3cde1e.tar.gz blackbird-op-linux-0fe7d7e9761ec7e23350b5543ddac470bb3cde1e.zip | |
perf symbols: Add description of JIT interface
Add a description of the JIT interface in the perf symbol resolution
code. I reverse engineered the format from the source.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Pekka Enberg <penberg@cs.helsinki.fi>
Link: http://lkml.kernel.org/r/1344526260-18721-1-git-send-email-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf')
| -rw-r--r-- | tools/perf/Documentation/jit-interface.txt | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/tools/perf/Documentation/jit-interface.txt b/tools/perf/Documentation/jit-interface.txt new file mode 100644 index 000000000000..a8656f564915 --- /dev/null +++ b/tools/perf/Documentation/jit-interface.txt @@ -0,0 +1,15 @@ +perf supports a simple JIT interface to resolve symbols for dynamic code generated +by a JIT. + +The JIT has to write a /tmp/perf-%d.map (%d = pid of process) file + +This is a text file. + +Each line has the following format, fields separated with spaces: + +START SIZE symbolname + +START and SIZE are hex numbers without 0x. +symbolname is the rest of the line, so it could contain special characters. + +The ownership of the file has to match the process. |
