Messages in this thread Patch in this message | | | From | Arnaldo Carvalho de Melo <> | Subject | [PATCH 38/38] perf symbols: Add description of JIT interface | Date | Mon, 13 Aug 2012 15:37:19 -0300 |
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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.
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> --- tools/perf/Documentation/jit-interface.txt | 15 +++++++++++++++ 1 files changed, 15 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..a8656f5 --- /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. -- 1.7.1
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