linux-kernel - [PATCH 1/3] perf/core: make perf_ctx

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Date:   Thu,  4 Apr 2019 11:32:17 -0700
From:   Stephane Eranian <eranian@...gle.com>
To:     linux-kernel@...r.kernel.org
Cc:     peterz@...radead.org, tglx@...utronix.de, ak@...ux.intel.com,
        kan.liang@...el.com, mingo@...e.hu, nelson.dsouza@...el.com,
        jolsa@...hat.com, tonyj@...e.com
Subject: [PATCH 1/3] perf/core: make perf_ctx_*lock() global inline functions

This patch makes the perf_ctx_lock()/perf_ctx_unlock() inlined functions
available throughout the perf_events code and not just in kernel/events/core.c
This will help with the next patch.

Signed-off-by: Stephane Eranian <eranian@...gle.com>
---
 include/linux/perf_event.h | 16 ++++++++++++++++
 kernel/events/core.c       | 16 ----------------
 2 files changed, 16 insertions(+), 16 deletions(-)

diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index 2a1405e907ec..514de997696b 100644
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -1283,6 +1283,22 @@ perf_event_addr_filters(struct perf_event *event)
 	return ifh;
 }
 
+static inline void perf_ctx_lock(struct perf_cpu_context *cpuctx,
+			  struct perf_event_context *ctx)
+{
+	raw_spin_lock(&cpuctx->ctx.lock);
+	if (ctx)
+		raw_spin_lock(&ctx->lock);
+}
+
+static inline void perf_ctx_unlock(struct perf_cpu_context *cpuctx,
+			    struct perf_event_context *ctx)
+{
+	if (ctx)
+		raw_spin_unlock(&ctx->lock);
+	raw_spin_unlock(&cpuctx->ctx.lock);
+}
+
 extern void perf_event_addr_filters_sync(struct perf_event *event);
 
 extern int perf_output_begin(struct perf_output_handle *handle,
diff --git a/kernel/events/core.c b/kernel/events/core.c
index 833f1bccf25a..429bf6d8be95 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -148,22 +148,6 @@ __get_cpu_context(struct perf_event_context *ctx)
 	return this_cpu_ptr(ctx->pmu->pmu_cpu_context);
 }
 
-static void perf_ctx_lock(struct perf_cpu_context *cpuctx,
-			  struct perf_event_context *ctx)
-{
-	raw_spin_lock(&cpuctx->ctx.lock);
-	if (ctx)
-		raw_spin_lock(&ctx->lock);
-}
-
-static void perf_ctx_unlock(struct perf_cpu_context *cpuctx,
-			    struct perf_event_context *ctx)
-{
-	if (ctx)
-		raw_spin_unlock(&ctx->lock);
-	raw_spin_unlock(&cpuctx->ctx.lock);
-}
-
 #define TASK_TOMBSTONE ((void *)-1L)
 
 static bool is_kernel_event(struct perf_event *event)
-- 
2.21.0.392.gf8f6787159e-goog