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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.h
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.h')
-rw-r--r--tools/perf/util/callchain.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/tools/perf/util/callchain.h b/tools/perf/util/callchain.h
index d2a9e694810c..cae5a7b1f5c8 100644
--- a/tools/perf/util/callchain.h
+++ b/tools/perf/util/callchain.h
@@ -212,7 +212,8 @@ struct hist_entry;
int record_parse_callchain_opt(const struct option *opt, const char *arg, int unset);
int record_callchain_opt(const struct option *opt, const char *arg, int unset);
-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);
int hist_entry__append_callchain(struct hist_entry *he, struct perf_sample *sample);