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authorArnaldo Carvalho de Melo <[email protected]>2015-07-24 15:13:05 +0000
committerArnaldo Carvalho de Melo <[email protected]>2015-07-29 13:51:44 +0000
commit959c2199d4c0e330d17f1f5234527e87132d5e07 (patch)
treecb221878d1713ac915f99e427d5ff70e8e4e0b44 /tools/perf/python/twatch.py
parentMerge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/... (diff)
downloadkernel-959c2199d4c0e330d17f1f5234527e87132d5e07.tar.gz
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perf python: Remove dependency on 'machine' methods
The python binding still doesn't provide symbol resolving facilities, but the recent addition of the trace_event__register_resolver() function made it add as a dependency the machine__resolve_kernel_addr() method, that in turn drags all the symbol resolving code. The problem: [root@zoo ~]# perf test -v python 17: Try 'import perf' in python, checking link problems : --- start --- test child forked, pid 6853 Traceback (most recent call last): File "<stdin>", line 1, in <module> ImportError: /tmp/build/perf/python/perf.so: undefined symbol: machine__resolve_kernel_addr test child finished with -1 ---- end ---- Try 'import perf' in python, checking link problems: FAILED! [root@zoo ~]# Fix it by requiring this function to receive the resolver as a parameter, just like pevent_register_function_resolver(), i.e. do not explicitely refer to an object file not included in tools/perf/util/python-ext-sources. [root@zoo ~]# perf test python 17: Try 'import perf' in python, checking link problems : Ok [root@zoo ~]# Cc: Adrian Hunter <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: David Ahern <[email protected]> Cc: Frederic Weisbecker <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Stephane Eranian <[email protected]> Fixes: c3168b0db93a ("perf symbols: Provide libtraceevent callback to resolve kernel symbols") Link: http://lkml.kernel.org/n/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
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