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Commit 0fe7d7e9 authored by Andi Kleen's avatar Andi Kleen Committed by Arnaldo Carvalho de Melo
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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: default avatarAndi Kleen <ak@linux.intel.com>
Acked-by: default avatarPekka 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: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 3aafe5ae

tools/perf/Documentation/jit-interface.txt

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+15 −0
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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.