Merge tag 'perf-core-for-mingo-20160615' of git://git.kernel.org/pub/scm/linux/kernel...

[deliverable/linux.git] / tools / perf / util / probe-event.c

diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c
index 84f4b2b32ab78e8838634655c3705790ab614282..084756c173094c53e393b5f999968f9ade2a13a2 100644 (file)
--- a/tools/perf/util/probe-event.c
+++ b/tools/perf/util/probe-event.c
@@ -67,7 +67,6 @@ int e_snprintf(char *str, size_t size, const char *format, ...)
        return ret;
 }
 
-static char *synthesize_perf_probe_point(struct perf_probe_point *pp);
 static struct machine *host_machine;
 
 /* Initialize symbol maps and path of vmlinux/modules */
@@ -1716,7 +1715,7 @@ out:
 }
 
 /* Compose only probe point (not argument) */
-static char *synthesize_perf_probe_point(struct perf_probe_point *pp)
+char *synthesize_perf_probe_point(struct perf_probe_point *pp)
 {
        struct strbuf buf;
        char *tmp, *ret = NULL;
@@ -1755,30 +1754,36 @@ out:
        return ret;
 }
 
-#if 0
 char *synthesize_perf_probe_command(struct perf_probe_event *pev)
 {
-       char *buf;
-       int i, len, ret;
+       struct strbuf buf;
+       char *tmp, *ret = NULL;
+       int i;
 
-       buf = synthesize_perf_probe_point(&pev->point);
-       if (!buf)
+       if (strbuf_init(&buf, 64))
                return NULL;
+       if (pev->event)
+               if (strbuf_addf(&buf, "%s:%s=", pev->group ?: PERFPROBE_GROUP,
+                               pev->event) < 0)
+                       goto out;
+
+       tmp = synthesize_perf_probe_point(&pev->point);
+       if (!tmp || strbuf_addstr(&buf, tmp) < 0)
+               goto out;
+       free(tmp);
 
-       len = strlen(buf);
        for (i = 0; i < pev->nargs; i++) {
-               ret = e_snprintf(&buf[len], MAX_CMDLEN - len, " %s",
-                                pev->args[i].name);
-               if (ret <= 0) {
-                       free(buf);
-                       return NULL;
-               }
-               len += ret;
+               tmp = synthesize_perf_probe_arg(pev->args + i);
+               if (!tmp || strbuf_addf(&buf, " %s", tmp) < 0)
+                       goto out;
+               free(tmp);
        }
 
-       return buf;
+       ret = strbuf_detach(&buf, NULL);
+out:
+       strbuf_release(&buf);
+       return ret;
 }
-#endif
 
 static int __synthesize_probe_trace_arg_ref(struct probe_trace_arg_ref *ref,
                                            struct strbuf *buf, int depth)
@@ -2509,6 +2514,7 @@ static int __add_probe_trace_events(struct perf_probe_event *pev,
 {
        int i, fd, ret;
        struct probe_trace_event *tev = NULL;
+       struct probe_cache *cache = NULL;
        struct strlist *namelist;
 
        fd = probe_file__open(PF_FL_RW | (pev->uprobes ? PF_FL_UPROBE : 0));
@@ -2550,6 +2556,14 @@ static int __add_probe_trace_events(struct perf_probe_event *pev,
        }
        if (ret == -EINVAL && pev->uprobes)
                warn_uprobe_event_compat(tev);
+       if (ret == 0 && probe_conf.cache) {
+               cache = probe_cache__new(pev->target);
+               if (!cache ||
+                   probe_cache__add_entry(cache, pev, tevs, ntevs) < 0 ||
+                   probe_cache__commit(cache) < 0)
+                       pr_warning("Failed to add event to probe cache\n");
+               probe_cache__delete(cache);
+       }
 
        strlist__delete(namelist);
 close_out: