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perf probe: Remove all probes matches given pattern at once
Fix perf-probe --del option to delete all matched probes in both of kprobes and uprobes at once. When we have 2 or more events on different binaries as below, ---- # ./perf probe -l probe:vfs_read (on vfs_read@ksrc/linux-3/fs/read_write.c) probe_libc:malloc (on __libc_malloc@malloc/malloc.c in /usr/lib64/libc-2.17 ---- Trying to remove all event with '*' just removes kprobe events at first. ---- # ./perf probe -d \* Removed event: probe:vfs_read ---- And in 2nd try, it removes all uprobe events. ---- # ./perf probe -d \* Removed event: probe_libc:malloc ---- This fixes to remove all event at once as below. ---- # ./perf probe -d \* Removed event: probe:vfs_read Removed event: probe_libc:malloc ---- Reported-by: Arnaldo Carvalho de Melo <acme@kernel.org> Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: David Ahern <dsahern@gmail.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/20150423134614.26128.18106.stgit@localhost.localdomain Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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@ -2686,7 +2686,7 @@ static int del_trace_probe_event(int fd, const char *buf,
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struct strlist *namelist)
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{
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struct str_node *ent, *n;
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int ret = -1;
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int ret = -ENOENT;
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if (strpbrk(buf, "*?")) { /* Glob-exp */
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strlist__for_each_safe(ent, n, namelist)
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@ -2710,7 +2710,7 @@ static int del_trace_probe_event(int fd, const char *buf,
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int del_perf_probe_events(struct strlist *dellist)
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{
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int ret = -1, ufd = -1, kfd = -1;
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int ret = -1, ret2, ufd = -1, kfd = -1;
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char buf[128];
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const char *group, *event;
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char *p, *str;
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@ -2731,8 +2731,10 @@ int del_perf_probe_events(struct strlist *dellist)
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goto error;
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}
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if (namelist == NULL && unamelist == NULL)
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if (namelist == NULL && unamelist == NULL) {
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ret = -ENOENT;
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goto error;
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}
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strlist__for_each(ent, dellist) {
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str = strdup(ent->s);
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@ -2759,17 +2761,23 @@ int del_perf_probe_events(struct strlist *dellist)
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}
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pr_debug("Group: %s, Event: %s\n", group, event);
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free(str);
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ret = ret2 = -ENOENT;
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if (namelist)
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ret = del_trace_probe_event(kfd, buf, namelist);
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if (unamelist && ret != 0)
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ret = del_trace_probe_event(ufd, buf, unamelist);
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if ((ret >= 0 || ret == -ENOENT) && unamelist)
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ret2 = del_trace_probe_event(ufd, buf, unamelist);
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if (ret != 0)
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pr_info("Info: Event \"%s\" does not exist.\n", buf);
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free(str);
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/* Since we can remove probes which already removed, don't check it */
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if (ret == -ENOENT && ret2 == -ENOENT)
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pr_debug("Event \"%s\" does not exist.\n", buf);
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else if (ret < 0 || ret2 < 0) {
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if (ret >= 0)
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ret = ret2;
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break;
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}
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}
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error:
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