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| author | Milian Wolff <milian.wolff@kdab.com> | 2017-10-09 22:32:56 +0200 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2017-10-24 09:59:55 -0300 |
| commit | 40a342cda2cd9bc8f7bf81c5ce1a141584760757 (patch) | |
| tree | 21f9ebf584f25c45e7fe8bf0280c2d6d9c6cac8a /tools/perf/util/callchain.h | |
| parent | 2a704fc8db7b0080a67d9f4f4cb2a7bcaf79949d (diff) | |
| download | linux-next-40a342cda2cd9bc8f7bf81c5ce1a141584760757.tar.gz | |
perf callchain: Store srcline in callchain_cursor_node
This is mostly a preparation to enable the creation of full callchain
nodes for inline frames. Such frames will reference the IP of the
non-inlined frame, but hold the symbol and srcline for an inlined
location. As such, we won't be able to query the srcline on-demand based
on the IP alone. Instead, we will leverage the functionality provided by
this patch here, and store the srcline for the inlined nodes in the new
srcline member of callchain_cursor_node.
Note that this patch on its own leaks the srcline, as there is no
free_callchain_cursor_node or similar. A future patch will add caching
of the srcline and handle deletion properly.
Signed-off-by: Milian Wolff <milian.wolff@kdab.com>
Reviewed-by: Jiri Olsa <jolsa@redhat.com>
Reviewed-by: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Yao Jin <yao.jin@linux.intel.com>
Link: http://lkml.kernel.org/r/20171009203310.17362-3-milian.wolff@kdab.com
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.h | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/tools/perf/util/callchain.h b/tools/perf/util/callchain.h index 1ed6fc61d0a5..8f67b681cde9 100644 --- a/tools/perf/util/callchain.h +++ b/tools/perf/util/callchain.h @@ -121,7 +121,7 @@ struct callchain_list { u64 iter_count; u64 iter_cycles; struct branch_type_stat brtype_stat; - char *srcline; + const char *srcline; struct list_head list; }; @@ -135,6 +135,7 @@ struct callchain_cursor_node { u64 ip; struct map *map; struct symbol *sym; + const char *srcline; bool branch; struct branch_flags branch_flags; u64 branch_from; @@ -201,7 +202,8 @@ static inline void callchain_cursor_reset(struct callchain_cursor *cursor) int callchain_cursor_append(struct callchain_cursor *cursor, u64 ip, struct map *map, struct symbol *sym, bool branch, struct branch_flags *flags, - int nr_loop_iter, u64 iter_cycles, u64 branch_from); + int nr_loop_iter, u64 iter_cycles, u64 branch_from, + const char *srcline); /* Close a cursor writing session. Initialize for the reader */ static inline void callchain_cursor_commit(struct callchain_cursor *cursor) |