Messages in this thread Patch in this message | | | From | Andi Kleen <> | Subject | [PATCH] perf, tools: Add description of JIT interface | Date | Thu, 9 Aug 2012 08:31:00 -0700 |
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From: Andi Kleen <ak@linux.intel.com>
Add a description of the JIT interface in the perf symbol resolution code. I reverse engineered the format from the source.
Cc: Pekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: Andi Kleen <ak@linux.intel.com> --- tools/perf/Documentation/jit-interface.txt | 16 ++++++++++++++++ 1 files changed, 16 insertions(+), 0 deletions(-) create mode 100644 tools/perf/Documentation/jit-interface.txt
diff --git a/tools/perf/Documentation/jit-interface.txt b/tools/perf/Documentation/jit-interface.txt new file mode 100644 index 0000000..aa66735 --- /dev/null +++ b/tools/perf/Documentation/jit-interface.txt @@ -0,0 +1,16 @@ +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. + -- 1.7.7.6
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