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authorArnaldo Carvalho de Melo <acme@redhat.com>2009-06-30 19:01:22 -0300
committerIngo Molnar <mingo@elte.hu>2009-07-01 00:07:10 +0200
commit7bec7a9134c25cecb0d7029199b59f7b1bef35b8 (patch)
treeea28eb245e00b837e77e5919dfb1acc070ca76af /tools
parentcc8b88b15ab8e5ae162a46c4b6b286b555190dd1 (diff)
downloadlinux-7bec7a9134c25cecb0d7029199b59f7b1bef35b8.tar.bz2
perf report: Add --symbols parameter
So that we can filter by symbol name. The 'pfunct' utility in the 'dwarves' package can be used to create a file with the functions one wants. Example: [acme@doppio pahole]$ pfunct /usr/lib/debug/usr/lib64/libdw-0.141.so.debug | grep dwarf > /tmp/dwarf.symbols [acme@doppio pahole]$ wc -l /tmp/dwarf.symbols 93 /tmp/dwarf.symbols [acme@doppio pahole]$ head -3 /tmp/dwarf.symbols dwfl_addrdwarf dwfl_module_getdwarf dwfl_getdwarf [acme@doppio pahole]$ perf report --sort comm,dso,symbol --comms pahole --dsos /usr/lib64/libdw-0.141.so --symbols file:///tmp/dwarf.symbols 33.99% pahole /usr/lib64/libdw-0.141.so [.] dwarf_tag 29.07% pahole /usr/lib64/libdw-0.141.so [.] dwarf_decl_file 27.71% pahole /usr/lib64/libdw-0.141.so [.] dwarf_getsrclines 4.54% pahole /usr/lib64/libdw-0.141.so 0x00000000007400 3.93% pahole /usr/lib64/libdw-0.141.so [.] dwarf_decl_line 0.46% pahole /usr/lib64/libdw-0.141.so [.] dwarf_getlocation 0.18% pahole /usr/lib64/libdw-0.141.so [.] __libdwarf_next_prime 0.13% pahole /usr/lib64/libdw-0.141.so [.] dwarf_diecu [acme@doppio pahole]$ Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1246399282-20934-4-git-send-email-acme@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'tools')
-rw-r--r--tools/perf/Documentation/perf-report.txt4
-rw-r--r--tools/perf/builtin-report.c10
2 files changed, 12 insertions, 2 deletions
diff --git a/tools/perf/Documentation/perf-report.txt b/tools/perf/Documentation/perf-report.txt
index 4c44ef1747b9..8aa3f8c88707 100644
--- a/tools/perf/Documentation/perf-report.txt
+++ b/tools/perf/Documentation/perf-report.txt
@@ -28,6 +28,10 @@ OPTIONS
--comms=::
Only consider symbols in these comms. CSV that understands
file://filename entries.
+-S::
+--symbols=::
+ Only consider these symbols. CSV that understands
+ file://filename entries.
SEE ALSO
--------
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 8143477b7ef7..135b7837e6bf 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -33,8 +33,8 @@ static char *vmlinux = NULL;
static char default_sort_order[] = "comm,dso";
static char *sort_order = default_sort_order;
-static char *dso_list_str, *comm_list_str;
-static struct strlist *dso_list, *comm_list;
+static char *dso_list_str, *comm_list_str, *sym_list_str;
+static struct strlist *dso_list, *comm_list, *sym_list;
static int input;
static int show_mask = SHOW_KERNEL | SHOW_USER | SHOW_HV;
@@ -1281,6 +1281,9 @@ process_sample_event(event_t *event, unsigned long offset, unsigned long head)
if (dso_list && dso && dso->name && !strlist__has_entry(dso_list, dso->name))
return 0;
+ if (sym_list && sym && !strlist__has_entry(sym_list, sym->name))
+ return 0;
+
if (hist_entry__add(thread, map, dso, sym, ip, chain, level, period)) {
eprintf("problem incrementing symbol count, skipping event\n");
return -1;
@@ -1672,6 +1675,8 @@ static const struct option options[] = {
"only consider symbols in these dsos"),
OPT_STRING('C', "comms", &comm_list_str, "comm[,comm...]",
"only consider symbols in these comms"),
+ OPT_STRING('S', "symbols", &sym_list_str, "symbol[,symbol...]",
+ "only consider these symbols"),
OPT_END()
};
@@ -1726,6 +1731,7 @@ int cmd_report(int argc, const char **argv, const char *prefix)
setup_list(&dso_list, dso_list_str, "dso");
setup_list(&comm_list, comm_list_str, "comm");
+ setup_list(&sym_list, sym_list_str, "symbol");
setup_pager();