linux-kernel - [tip: perf/core] perf core: Allocate perf

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Message-ID: <161598470527.398.15328587861840487615.tip-bot2@tip-bot2>
Date:   Wed, 17 Mar 2021 12:38:25 -0000
From:   "tip-bot2 for Namhyung Kim" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     Namhyung Kim <namhyung@...nel.org>,
        "Peter Zijlstra (Intel)" <peterz@...radead.org>, x86@...nel.org,
        linux-kernel@...r.kernel.org
Subject: [tip: perf/core] perf core: Allocate perf_buffer in the target node memory

The following commit has been merged into the perf/core branch of tip:

Commit-ID:     9483409ab5067941860754e78a4a44a60311d276
Gitweb:        https://git.kernel.org/tip/9483409ab5067941860754e78a4a44a60311d276
Author:        Namhyung Kim <namhyung@...nel.org>
AuthorDate:    Mon, 15 Mar 2021 12:34:36 +09:00
Committer:     Peter Zijlstra <peterz@...radead.org>
CommitterDate: Tue, 16 Mar 2021 21:44:42 +01:00

perf core: Allocate perf_buffer in the target node memory

I found the ring buffer pages are allocated in the node but the ring
buffer itself is not.  Let's convert it to use kzalloc_node() too.

Signed-off-by: Namhyung Kim <namhyung@...nel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
Link: https://lkml.kernel.org/r/20210315033436.682438-1-namhyung@kernel.org
---
 kernel/events/ring_buffer.c |  9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/kernel/events/ring_buffer.c b/kernel/events/ring_buffer.c
index ef91ae7..bd55ccc 100644
--- a/kernel/events/ring_buffer.c
+++ b/kernel/events/ring_buffer.c
@@ -804,7 +804,7 @@ struct perf_buffer *rb_alloc(int nr_pages, long watermark, int cpu, int flags)
 {
 	struct perf_buffer *rb;
 	unsigned long size;
-	int i;
+	int i, node;
 
 	size = sizeof(struct perf_buffer);
 	size += nr_pages * sizeof(void *);
@@ -812,7 +812,8 @@ struct perf_buffer *rb_alloc(int nr_pages, long watermark, int cpu, int flags)
 	if (order_base_2(size) >= PAGE_SHIFT+MAX_ORDER)
 		goto fail;
 
-	rb = kzalloc(size, GFP_KERNEL);
+	node = (cpu == -1) ? cpu : cpu_to_node(cpu);
+	rb = kzalloc_node(size, GFP_KERNEL, node);
 	if (!rb)
 		goto fail;
 
@@ -906,11 +907,13 @@ struct perf_buffer *rb_alloc(int nr_pages, long watermark, int cpu, int flags)
 	struct perf_buffer *rb;
 	unsigned long size;
 	void *all_buf;
+	int node;
 
 	size = sizeof(struct perf_buffer);
 	size += sizeof(void *);
 
-	rb = kzalloc(size, GFP_KERNEL);
+	node = (cpu == -1) ? cpu : cpu_to_node(cpu);
+	rb = kzalloc_node(size, GFP_KERNEL, node);
 	if (!rb)
 		goto fail;