Commit-ID: c796bbbe8dccd9c91ebbb99ffef33e0f73ced7bf Gitweb: http://git.kernel.org/tip/c796bbbe8dccd9c91ebbb99ffef33e0f73ced7bf Author: Alexander Shishkin <[email protected]> AuthorDate: Wed, 27 Apr 2016 18:44:42 +0300 Committer: Ingo Molnar <[email protected]> CommitDate: Thu, 5 May 2016 10:13:55 +0200
perf/core: Move set_filter() out of CONFIG_EVENT_TRACING For instruction trace filtering, namely, for communicating filter definitions from userspace, I'd like to re-use the SET_FILTER code that the tracepoints are using currently. To that end, move the relevant code out from behind the CONFIG_EVENT_TRACING dependency. Signed-off-by: Alexander Shishkin <[email protected]> Signed-off-by: Peter Zijlstra (Intel) <[email protected]> Cc: Arnaldo Carvalho de Melo <[email protected]> Cc: Arnaldo Carvalho de Melo <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Linus Torvalds <[email protected]> Cc: Mathieu Poirier <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Stephane Eranian <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Vince Weaver <[email protected]> Cc: [email protected] Link: http://lkml.kernel.org/r/1461771888-10409-2-git-send-email-alexander.shish...@linux.intel.com Signed-off-by: Ingo Molnar <[email protected]> --- kernel/events/core.c | 45 ++++++++++++++++++++++----------------------- 1 file changed, 22 insertions(+), 23 deletions(-) diff --git a/kernel/events/core.c b/kernel/events/core.c index 9de459a..13956ee 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -7235,24 +7235,6 @@ static inline void perf_tp_register(void) perf_pmu_register(&perf_tracepoint, "tracepoint", PERF_TYPE_TRACEPOINT); } -static int perf_event_set_filter(struct perf_event *event, void __user *arg) -{ - char *filter_str; - int ret; - - if (event->attr.type != PERF_TYPE_TRACEPOINT) - return -EINVAL; - - filter_str = strndup_user(arg, PAGE_SIZE); - if (IS_ERR(filter_str)) - return PTR_ERR(filter_str); - - ret = ftrace_profile_set_filter(event, event->attr.config, filter_str); - - kfree(filter_str); - return ret; -} - static void perf_event_free_filter(struct perf_event *event) { ftrace_profile_free_filter(event); @@ -7307,11 +7289,6 @@ static inline void perf_tp_register(void) { } -static int perf_event_set_filter(struct perf_event *event, void __user *arg) -{ - return -ENOENT; -} - static void perf_event_free_filter(struct perf_event *event) { } @@ -7339,6 +7316,28 @@ void perf_bp_event(struct perf_event *bp, void *data) } #endif +static int perf_event_set_filter(struct perf_event *event, void __user *arg) +{ + char *filter_str; + int ret = -EINVAL; + + if (event->attr.type != PERF_TYPE_TRACEPOINT || + !IS_ENABLED(CONFIG_EVENT_TRACING)) + return -EINVAL; + + filter_str = strndup_user(arg, PAGE_SIZE); + if (IS_ERR(filter_str)) + return PTR_ERR(filter_str); + + if (IS_ENABLED(CONFIG_EVENT_TRACING) && + event->attr.type == PERF_TYPE_TRACEPOINT) + ret = ftrace_profile_set_filter(event, event->attr.config, + filter_str); + + kfree(filter_str); + return ret; +} + /* * hrtimer based swevent callback */
