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authorMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com>2011-01-20 17:15:45 +0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2011-01-28 14:20:25 +0300
commit3c42258c9a4db70133fa6946a275b62a16792bb5 (patch)
treef80956618d48e27bd08f4dacf70866bce8f6846f /tools/perf/builtin-probe.c
parentbd09d7b5efeb13965b6725b4a3e9944908bca9d2 (diff)
downloadlinux-3c42258c9a4db70133fa6946a275b62a16792bb5.tar.xz
perf probe: Add filters support for available functions
Add filters support for available function list. Default filter is "!_*" for filtering out local-purpose symbols. e.g.: # perf probe --filter="add*" -F add_disk add_disk_randomness add_input_randomness add_interrupt_randomness add_memory add_page_to_unevictable_list add_page_wait_queue ... Cc: 2nddept-manager@sdl.hitachi.co.jp Cc: Chase Douglas <chase.douglas@canonical.com> Cc: Franck Bui-Huu <fbuihuu@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Cc: Steven Rostedt <rostedt@goodmis.org> LKML-Reference: <20110120141545.25915.85930.stgit@ltc236.sdl.hitachi.co.jp> Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/builtin-probe.c')
-rw-r--r--tools/perf/builtin-probe.c19
1 files changed, 13 insertions, 6 deletions
diff --git a/tools/perf/builtin-probe.c b/tools/perf/builtin-probe.c
index abb423e164c8..fcde0031085f 100644
--- a/tools/perf/builtin-probe.c
+++ b/tools/perf/builtin-probe.c
@@ -45,6 +45,7 @@
#include "util/probe-event.h"
#define DEFAULT_VAR_FILTER "!__k???tab_* & !__crc_*"
+#define DEFAULT_FUNC_FILTER "!_*"
#define MAX_PATH_LEN 256
/* Session management structure */
@@ -159,6 +160,7 @@ static int opt_show_vars(const struct option *opt __used,
return ret;
}
+#endif
static int opt_set_filter(const struct option *opt __used,
const char *str, int unset __used)
@@ -180,7 +182,6 @@ static int opt_set_filter(const struct option *opt __used,
return 0;
}
-#endif
static const char * const probe_usage[] = {
"perf probe [<options>] 'PROBEDEF' ['PROBEDEF' ...]",
@@ -236,10 +237,6 @@ static const struct option options[] = {
"Show accessible variables on PROBEDEF", opt_show_vars),
OPT_BOOLEAN('\0', "externs", &params.show_ext_vars,
"Show external variables too (with --vars only)"),
- OPT_CALLBACK('\0', "filter", NULL,
- "[!]FILTER", "Set a variable filter (with --vars only)\n"
- "\t\t\t(default: \"" DEFAULT_VAR_FILTER "\")",
- opt_set_filter),
OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
"file", "vmlinux pathname"),
OPT_STRING('s', "source", &symbol_conf.source_prefix,
@@ -252,6 +249,11 @@ static const struct option options[] = {
"Set how many probe points can be found for a probe."),
OPT_BOOLEAN('F', "funcs", &params.show_funcs,
"Show potential probe-able functions."),
+ OPT_CALLBACK('\0', "filter", NULL,
+ "[!]FILTER", "Set a filter (with --vars/funcs only)\n"
+ "\t\t\t(default: \"" DEFAULT_VAR_FILTER "\" for --vars,\n"
+ "\t\t\t \"" DEFAULT_FUNC_FILTER "\" for --funcs)",
+ opt_set_filter),
OPT_END()
};
@@ -322,7 +324,12 @@ int cmd_probe(int argc, const char **argv, const char *prefix __used)
pr_err(" Error: Don't use --funcs with --vars.\n");
usage_with_options(probe_usage, options);
}
- ret = show_available_funcs(params.target_module);
+ if (!params.filter)
+ params.filter = strfilter__new(DEFAULT_FUNC_FILTER,
+ NULL);
+ ret = show_available_funcs(params.target_module,
+ params.filter);
+ strfilter__delete(params.filter);
if (ret < 0)
pr_err(" Error: Failed to show functions."
" (%d)\n", ret);