lkml.org 
[lkml]   [2012]   [Aug]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 38/38] perf symbols: Add description of JIT interface
Date
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


\
 
 \ /
  Last update: 2012-08-13 22:03    [W:0.046 / U:0.372 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site