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perf probe: Cleanup struct session in builtin-probe.c

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Clean up struct session in builtin-probe.c, including
change need_dwarf to bool and move listing flag into
struct session as list_events flag.

This also changes parse_perf_probe_event() interface
due to code readability.

Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Jim Keniston <jkenisto@us.ibm.com>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Frank Ch. Eigler <fche@redhat.com>
Cc: Jason Baron <jbaron@redhat.com>
Cc: K.Prasad <prasad@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: systemtap <systemtap@sources.redhat.com>
Cc: DLE <dle-develop@lists.sourceforge.net>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <20091215153114.17436.77000.stgit@dhcp-100-2-132.bos.redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Masami Hiramatsu 2009-12-15 10:31:14 -05:00 committed by Ingo Molnar
parent f13c12c634
commit fac13fd54e
3 changed files with 17 additions and 12 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

13
tools/perf/builtin-probe.c
View file

@ -59,13 +59,13 @@ const char *default_search_path[NR_SEARCH_PATH] = {
static struct {
char *vmlinux;
char *release;
int need_dwarf;
bool need_dwarf;
bool list_events;
int nr_probe;
struct probe_point probes[MAX_PROBES];
struct strlist *dellist;
} session;
static bool listing;
/* Parse an event definition. Note that any error must die. */
static void parse_probe_event(const char *str)
@ -77,7 +77,7 @@ static void parse_probe_event(const char *str)
die("Too many probes (> %d) are specified.", MAX_PROBES);
/* Parse perf-probe event into probe_point */
session.need_dwarf = parse_perf_probe_event(str, pp);
parse_perf_probe_event(str, pp, &session.need_dwarf);
pr_debug("%d arguments\n", pp->nr_args);
}
@ -166,7 +166,8 @@ static const struct option options[] = {
OPT_STRING('k', "vmlinux", &session.vmlinux, "file",
"vmlinux/module pathname"),
#endif
OPT_BOOLEAN('l', "list", &listing, "list up current probe events"),
OPT_BOOLEAN('l', "list", &session.list_events,
"list up current probe events"),
OPT_CALLBACK('d', "del", NULL, "[GROUP:]EVENT", "delete a probe event.",
opt_del_probe_event),
OPT_CALLBACK('a', "add", NULL,
@ -207,10 +208,10 @@ int cmd_probe(int argc, const char **argv, const char *prefix __used)
if (argc > 0)
parse_probe_event_argv(argc, argv);
if ((session.nr_probe == 0 && !session.dellist && !listing))
if ((!session.nr_probe && !session.dellist && !session.list_events))
usage_with_options(probe_usage, options);
if (listing) {
if (session.list_events) {
if (session.nr_probe != 0 || session.dellist) {
pr_warning(" Error: Don't use --list with"
" --add/--del.\n");

12
tools/perf/util/probe-event.c
View file

@ -150,10 +150,13 @@ static void parse_perf_probe_probepoint(char *arg, struct probe_point *pp)
}
/* Parse perf-probe event definition */
int parse_perf_probe_event(const char *str, struct probe_point *pp)
void parse_perf_probe_event(const char *str, struct probe_point *pp,
bool *need_dwarf)
{
char **argv;
int argc, i, need_dwarf = 0;
int argc, i;
*need_dwarf = false;
argv = argv_split(str, &argc);
if (!argv)
@ -164,7 +167,7 @@ int parse_perf_probe_event(const char *str, struct probe_point *pp)
/* Parse probe point */
parse_perf_probe_probepoint(argv[0], pp);
if (pp->file || pp->line)
need_dwarf = 1;
*need_dwarf = true;
/* Copy arguments and ensure return probe has no C argument */
pp->nr_args = argc - 1;
@ -177,12 +180,11 @@ int parse_perf_probe_event(const char *str, struct probe_point *pp)
if (pp->retprobe)
semantic_error("You can't specify local"
" variable for kretprobe");
need_dwarf = 1;
*need_dwarf = true;
}
}
argv_free(argv);
return need_dwarf;
}
/* Parse kprobe_events event into struct probe_point */

4
tools/perf/util/probe-event.h
View file

@ -1,10 +1,12 @@
#ifndef _PROBE_EVENT_H
#define _PROBE_EVENT_H
#include <stdbool.h>
#include "probe-finder.h"
#include "strlist.h"
extern int parse_perf_probe_event(const char *str, struct probe_point *pp);
extern void parse_perf_probe_event(const char *str, struct probe_point *pp,
bool *need_dwarf);
extern int synthesize_perf_probe_event(struct probe_point *pp);
extern void parse_trace_kprobe_event(const char *str, char **group,
char **event, struct probe_point *pp);