Force kernel events to specify the handler, because there's no use for kernel perf event without it.
Cc: Arnaldo Carvalho de Melo <[email protected]> Cc: Corey Ashford <[email protected]> Cc: Frederic Weisbecker <[email protected]> Cc: Mark Rutland <[email protected]> Cc: Paul Mackerras <[email protected]> Cc: Peter Zijlstra <[email protected]> Signed-off-by: Jiri Olsa <[email protected]> --- kernel/events/core.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/kernel/events/core.c b/kernel/events/core.c index 1cf24b3e42ec..75c4ff8d1590 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -7355,6 +7355,9 @@ perf_event_create_kernel_counter(struct perf_event_attr *attr, int cpu, struct perf_event *event; int err; + if (WARN_ON(!overflow_handler)) + return NULL; + /* * Get the target context (task or percpu): */ -- 1.8.3.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
