Messages in this thread Patch in this message | | | Subject | [RFC PATCH perf/core 13/13] perf probe: Remove caches when --cache is given | From | Masami Hiramatsu <> | Date | Mon, 01 Jun 2015 00:11:49 +0900 |
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perf-probe --del removes caches when --cache is given. Note that the delete pattern is not same as normal events.
If you cached probes with event name, --del "eventname" works as expected. However, if you skipped it, the cached probes doesn't have actual event name. In that case --del "probe-desc" is required. For example a cache entry has the probe-desc "vfs_read $params", you can remove it with --del "vfs_read*\$params".
----- # perf probe --cache --list /[kernel.kallsyms] (1466a0a250b5d0070c6d0f03c5fed30b237970a1): vfs_read $params /usr/lib64/libc-2.17.so (c31ffe7942bfd77b2fca8f9bd5709d387a86d3bc): getaddrinfo $params
# perf probe --cache --del vfs_read\* Removed event: probe:vfs_read
# perf probe --cache --list /[kernel.kallsyms] (1466a0a250b5d0070c6d0f03c5fed30b237970a1): /usr/lib64/libc-2.17.so (c31ffe7942bfd77b2fca8f9bd5709d387a86d3bc): getaddrinfo $params -----
Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> --- tools/perf/util/probe-event.c | 26 ++++++++++++++++++++++++++ tools/perf/util/probe-file.c | 33 +++++++++++++++++++++++++-------- tools/perf/util/probe-file.h | 2 ++ 3 files changed, 53 insertions(+), 8 deletions(-)
diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c index e89675d..07381a6 100644 --- a/tools/perf/util/probe-event.c +++ b/tools/perf/util/probe-event.c @@ -2638,6 +2638,30 @@ end: return ret; } +static int del_perf_probe_caches(struct strfilter *filter) +{ + struct probe_cache *cache; + struct strlist *bidlist; + struct str_node *nd; + int ret; + + ret = build_id_cache__list_all(&bidlist); + if (ret < 0) { + pr_debug("Failed to get buildids: %d\n", ret); + return ret; + } + + strlist__for_each(nd, bidlist) { + cache = probe_cache__new(nd->s); + if (!cache) + continue; + probe_cache__remove_entries(cache, filter); + probe_cache__commit(cache); + probe_cache__delete(cache); + } + return 0; +} + int del_perf_probe_events(struct strfilter *filter) { int ret, ret2, ufd = -1, kfd = -1; @@ -2647,6 +2671,8 @@ int del_perf_probe_events(struct strfilter *filter) return -EINVAL; pr_debug("Delete filter: \'%s\'\n", str); + if (probe_conf.cache) + return del_perf_probe_caches(filter); /* Get current event names */ ret = probe_file__open_both(&kfd, &ufd, PF_FL_RW); diff --git a/tools/perf/util/probe-file.c b/tools/perf/util/probe-file.c index 10dcec5..c7e4cf8 100644 --- a/tools/perf/util/probe-file.c +++ b/tools/perf/util/probe-file.c @@ -371,7 +371,6 @@ static int probe_cache__open(struct probe_cache *pcache, const char *target) return ret; } } - dir_name = build_id_cache__dirname_from_path(sbuildid, target, is_kallsyms, false); found: @@ -627,19 +626,37 @@ out: return ret; } +static bool probe_cache_entry__compare(struct probe_cache_entry *entry, + struct strfilter *filter) +{ + char buf[128], *ptr = entry->spev; + + if (entry->pev.event) { + snprintf(buf, 128, "%s:%s", entry->pev.group, entry->pev.event); + ptr = buf; + } + return strfilter__compare(filter, ptr); +} + +int probe_cache__remove_entries(struct probe_cache *pcache, + struct strfilter *filter) +{ + struct probe_cache_entry *entry, *tmp; + + list_for_each_entry_safe(entry, tmp, &pcache->list, list) { + if (probe_cache_entry__compare(entry, filter)) + probe_cache_entry__delete(entry); + } + return 0; +} + static int probe_cache__show_entries(struct probe_cache *pcache, struct strfilter *filter) { struct probe_cache_entry *entry; - char buf[128], *ptr; list_for_each_entry(entry, &pcache->list, list) { - if (entry->pev.event) { - ptr = buf; - snprintf(buf, 128, "%s:%s", entry->pev.group, entry->pev.event); - } else - ptr = entry->spev; - if (strfilter__compare(filter, ptr)) + if (probe_cache_entry__compare(entry, filter)) printf("%s\n", entry->spev); } return 0; diff --git a/tools/perf/util/probe-file.h b/tools/perf/util/probe-file.h index 26dc4f7..391fde0 100644 --- a/tools/perf/util/probe-file.h +++ b/tools/perf/util/probe-file.h @@ -34,6 +34,8 @@ int probe_cache__add_entry(struct probe_cache *pcache, struct probe_trace_event *tevs, int ntevs); int probe_cache__commit(struct probe_cache *pcache); void probe_cache__delete(struct probe_cache *pcache); +int probe_cache__remove_entries(struct probe_cache *pcache, + struct strfilter *filter); struct probe_cache_entry *probe_cache__find(struct probe_cache *pcache, struct perf_probe_event *pev); struct probe_cache_entry *probe_cache__find_by_name(struct probe_cache *pcache,
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