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Subject[PATCH 28/30] perf probe: Add --no-inlines option to avoid searching inline functions
Date
From: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>

Add --no-inlines(--inlines) option to avoid searching inline functions.

Searching all functions which matches glob pattern can take a long time
and find a lot of inline functions.

With this option perf-probe searches target on the non-inlined
functions.

Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Hemant Kumar <hemant@linux.vnet.ibm.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20150508010333.24812.86568.stgit@localhost.localdomain
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/Documentation/perf-probe.txt | 4 ++++
tools/perf/builtin-probe.c | 2 ++
tools/perf/util/probe-event.h | 1 +
tools/perf/util/probe-finder.c | 2 +-
4 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/tools/perf/Documentation/perf-probe.txt b/tools/perf/Documentation/perf-probe.txt
index ad3e355..3a8a9ba 100644
--- a/tools/perf/Documentation/perf-probe.txt
+++ b/tools/perf/Documentation/perf-probe.txt
@@ -83,6 +83,10 @@ OPTIONS
(Only for --vars) Show external defined variables in addition to local
variables.

+--no-inlines::
+ (Only for --add) Search only for non-inlined functions. The functions
+ which do not have instances are ignored.
+
-F::
--funcs[=FILTER]::
Show available functions in given module or kernel. With -x/--exec,
diff --git a/tools/perf/builtin-probe.c b/tools/perf/builtin-probe.c
index dbc998f..7fa2c7a 100644
--- a/tools/perf/builtin-probe.c
+++ b/tools/perf/builtin-probe.c
@@ -379,6 +379,8 @@ __cmd_probe(int argc, const char **argv, const char *prefix __maybe_unused)
OPT_CALLBACK('m', "module", NULL, "modname|path",
"target module name (for online) or path (for offline)",
opt_set_target),
+ OPT_BOOLEAN('\0', "no-inlines", &probe_conf.no_inlines,
+ "Don't search inlined functions"),
#endif
OPT__DRY_RUN(&probe_event_dry_run),
OPT_INTEGER('\0', "max-probes", &probe_conf.max_probes,
diff --git a/tools/perf/util/probe-event.h b/tools/perf/util/probe-event.h
index db9a9cb2..633aba7 100644
--- a/tools/perf/util/probe-event.h
+++ b/tools/perf/util/probe-event.h
@@ -10,6 +10,7 @@
struct probe_conf {
bool show_ext_vars;
bool force_add;
+ bool no_inlines;
int max_probes;
};
extern struct probe_conf probe_conf;
diff --git a/tools/perf/util/probe-finder.c b/tools/perf/util/probe-finder.c
index f4f5eed..1713421 100644
--- a/tools/perf/util/probe-finder.c
+++ b/tools/perf/util/probe-finder.c
@@ -943,7 +943,7 @@ static int probe_point_search_cb(Dwarf_Die *sp_die, void *data)
/* TODO: Check the address in this function */
param->retval = call_probe_finder(sp_die, pf);
}
- } else
+ } else if (!probe_conf.no_inlines)
/* Inlined function: search instances */
param->retval = die_walk_instances(sp_die,
probe_point_inline_cb, (void *)pf);
--
2.1.0


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