From e5fd3d6e84b268edb1a3f66e4d974611e3908c00 Mon Sep 17 00:00:00 2001 From: Mathieu Poirier Date: Thu, 28 Apr 2016 16:26:25 -0600 Subject: [PATCH] perf: passing struct perf_event to function setup_aux() Some information, like driver specific configuration, is found in the perf event structure. As such pass a 'struct perf_event' to function setup_aux() rather than just the CPU number so that individual drivers can make the right configuration when setting up a session. Signed-off-by: Mathieu Poirier --- drivers/hwtracing/coresight/coresight-etm-perf.c | 4 ++-- include/linux/perf_event.h | 2 +- kernel/events/ring_buffer.c | 2 +- 3 files changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/hwtracing/coresight/coresight-etm-perf.c b/drivers/hwtracing/coresight/coresight-etm-perf.c index 755125f7917f..f4174f36c5a0 100644 --- a/drivers/hwtracing/coresight/coresight-etm-perf.c +++ b/drivers/hwtracing/coresight/coresight-etm-perf.c @@ -155,7 +155,7 @@ static void etm_free_aux(void *data) schedule_work(&event_data->work); } -static void *etm_setup_aux(int event_cpu, void **pages, +static void *etm_setup_aux(struct perf_event *event, void **pages, int nr_pages, bool overwrite) { int cpu; @@ -163,7 +163,7 @@ static void *etm_setup_aux(int event_cpu, void **pages, struct coresight_device *sink; struct etm_event_data *event_data = NULL; - event_data = alloc_event_data(event_cpu); + event_data = alloc_event_data(event->cpu); if (!event_data) return NULL; diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h index 6e02e62fa1d9..ece8b9629a47 100644 --- a/include/linux/perf_event.h +++ b/include/linux/perf_event.h @@ -378,7 +378,7 @@ struct pmu { /* * Set up pmu-private data structures for an AUX area */ - void *(*setup_aux) (int cpu, void **pages, + void *(*setup_aux) (struct perf_event *event, void **pages, int nr_pages, bool overwrite); /* optional */ diff --git a/kernel/events/ring_buffer.c b/kernel/events/ring_buffer.c index 084be7d41bcf..8c60a4eb4080 100644 --- a/kernel/events/ring_buffer.c +++ b/kernel/events/ring_buffer.c @@ -562,7 +562,7 @@ int rb_alloc_aux(struct ring_buffer *rb, struct perf_event *event, goto out; } - rb->aux_priv = event->pmu->setup_aux(event->cpu, rb->aux_pages, nr_pages, + rb->aux_priv = event->pmu->setup_aux(event, rb->aux_pages, nr_pages, overwrite); if (!rb->aux_priv) goto out; -- 2.34.1