linux-kernel - [PATCH V2 2/4] perf: Add filter_match() as a parameter for pinned/flexible_sched

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Message-Id: <1557954092-67275-3-git-send-email-kan.liang@linux.intel.com>
Date:   Wed, 15 May 2019 14:01:30 -0700
From:   kan.liang@...ux.intel.com
To:     peterz@...radead.org, tglx@...utronix.de, mingo@...hat.com,
        linux-kernel@...r.kernel.org
Cc:     eranian@...gle.com, tj@...nel.org, mark.rutland@....com,
        irogers@...gle.com, ak@...ux.intel.com,
        Kan Liang <kan.liang@...ux.intel.com>
Subject: [PATCH V2 2/4] perf: Add filter_match() as a parameter for pinned/flexible_sched_in()

From: Kan Liang <kan.liang@...ux.intel.com>

A fast path will be introduced in the following patches to speed up the
cgroup events sched in, which only needs a simpler filter_match().

Add filter_match() as a parameter for pinned/flexible_sched_in().

No functional change.

Signed-off-by: Kan Liang <kan.liang@...ux.intel.com>
---
 kernel/events/core.c | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

diff --git a/kernel/events/core.c b/kernel/events/core.c
index e7ca0474..a3885e68 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -3316,7 +3316,8 @@ static void cpu_ctx_sched_out(struct perf_cpu_context *cpuctx,
 }
 
 static int visit_groups_merge(struct perf_event_groups *groups, int cpu,
-			      int (*func)(struct perf_event *, void *), void *data)
+			      int (*func)(struct perf_event *, void *, int (*)(struct perf_event *)),
+			      void *data)
 {
 	struct perf_event **evt, *evt1, *evt2;
 	int ret;
@@ -3336,7 +3337,7 @@ static int visit_groups_merge(struct perf_event_groups *groups, int cpu,
 			evt = &evt2;
 		}
 
-		ret = func(*evt, data);
+		ret = func(*evt, data, event_filter_match);
 		if (ret)
 			return ret;
 
@@ -3353,7 +3354,8 @@ struct sched_in_data {
 	enum event_type_t event_type;
 };
 
-static int pinned_sched_in(struct perf_event *event, void *data)
+static int pinned_sched_in(struct perf_event *event, void *data,
+			   int (*filter_match)(struct perf_event *))
 {
 	struct sched_in_data *sid = data;
 
@@ -3363,7 +3365,7 @@ static int pinned_sched_in(struct perf_event *event, void *data)
 	if (perf_cgroup_skip_switch(sid->event_type, event, true))
 		return 0;
 
-	if (!event_filter_match(event))
+	if (!filter_match(event))
 		return 0;
 
 	if (group_can_go_on(event, sid->cpuctx, sid->can_add_hw)) {
@@ -3381,7 +3383,8 @@ static int pinned_sched_in(struct perf_event *event, void *data)
 	return 0;
 }
 
-static int flexible_sched_in(struct perf_event *event, void *data)
+static int flexible_sched_in(struct perf_event *event, void *data,
+			     int (*filter_match)(struct perf_event *))
 {
 	struct sched_in_data *sid = data;
 
@@ -3391,7 +3394,7 @@ static int flexible_sched_in(struct perf_event *event, void *data)
 	if (perf_cgroup_skip_switch(sid->event_type, event, false))
 		return 0;
 
-	if (!event_filter_match(event))
+	if (!filter_match(event))
 		return 0;
 
 	if (group_can_go_on(event, sid->cpuctx, sid->can_add_hw)) {
-- 
2.7.4