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authorArnaldo Carvalho de Melo <acme@redhat.com>2016-04-14 20:48:07 +0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2016-04-14 20:48:07 +0300
commit91d7b2de318ff701451dfc7ede1c029b150ef0e9 (patch)
tree98440b6dfabaf5dc1490bd64f6d5993eea9bf3eb /tools/perf/util/callchain.c
parentbbf86c43eace367e805199f94ad8b5a45636f805 (diff)
downloadlinux-91d7b2de318ff701451dfc7ede1c029b150ef0e9.tar.xz
perf callchain: Start moving away from global per thread cursors
The recent perf_evsel__fprintf_callchain() move to evsel.c added several new symbol requirements to the python binding, for instance: # perf test -v python 16: Try 'import perf' in python, checking link problems : --- start --- test child forked, pid 18030 Traceback (most recent call last): File "<stdin>", line 1, in <module> ImportError: /tmp/build/perf/python/perf.so: undefined symbol: callchain_cursor test child finished with -1 ---- end ---- Try 'import perf' in python, checking link problems: FAILED! # This would require linking against callchain.c to access to the global callchain_cursor variables. Since lots of functions already receive as a parameter a callchain_cursor struct pointer, make that be the case for some more function so that we can start phasing out usage of yet another global variable. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-djko3097eyg2rn66v2qcqfvn@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/callchain.c')
-rw-r--r--tools/perf/util/callchain.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/tools/perf/util/callchain.c b/tools/perf/util/callchain.c
index 24b4bd0d7754..2b4ceaf058bb 100644
--- a/tools/perf/util/callchain.c
+++ b/tools/perf/util/callchain.c
@@ -788,7 +788,8 @@ int callchain_cursor_append(struct callchain_cursor *cursor,
return 0;
}
-int sample__resolve_callchain(struct perf_sample *sample, struct symbol **parent,
+int sample__resolve_callchain(struct perf_sample *sample,
+ struct callchain_cursor *cursor, struct symbol **parent,
struct perf_evsel *evsel, struct addr_location *al,
int max_stack)
{
@@ -797,7 +798,7 @@ int sample__resolve_callchain(struct perf_sample *sample, struct symbol **parent
if (symbol_conf.use_callchain || symbol_conf.cumulate_callchain ||
sort__has_parent) {
- return thread__resolve_callchain(al->thread, evsel, sample,
+ return thread__resolve_callchain(al->thread, cursor, evsel, sample,
parent, al, max_stack);
}
return 0;