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| author | Maxime Ripard <mripard@kernel.org> | 2024-04-23 08:48:56 +0200 |
|---|---|---|
| committer | Maxime Ripard <mripard@kernel.org> | 2024-04-23 08:48:56 +0200 |
| commit | c058e7a8f8af355e4a441c89400a6e95a16320e5 (patch) | |
| tree | ed96dcd06e69f508a3f8a112a29fd228289429a6 /kernel/trace/ring_buffer.c | |
| parent | drm/rockchip: rk3066_hdmi: switch to struct drm_edid (diff) | |
| parent | Backmerge tag 'v6.9-rc5' into drm-next (diff) | |
| download | linux-c058e7a8f8af355e4a441c89400a6e95a16320e5.tar.gz linux-c058e7a8f8af355e4a441c89400a6e95a16320e5.zip | |
Merge drm/drm-next into drm-misc-next
Maíra needs a backmerge to apply v3d patches, and Danilo for some
nouveau patches.
Signed-off-by: Maxime Ripard <mripard@kernel.org>
Diffstat (limited to 'kernel/trace/ring_buffer.c')
| -rw-r--r-- | kernel/trace/ring_buffer.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c index 25476ead681b..6511dc3a00da 100644 --- a/kernel/trace/ring_buffer.c +++ b/kernel/trace/ring_buffer.c @@ -1393,7 +1393,6 @@ static void rb_tail_page_update(struct ring_buffer_per_cpu *cpu_buffer, old_write = local_add_return(RB_WRITE_INTCNT, &next_page->write); old_entries = local_add_return(RB_WRITE_INTCNT, &next_page->entries); - local_inc(&cpu_buffer->pages_touched); /* * Just make sure we have seen our old_write and synchronize * with any interrupts that come in. @@ -1430,8 +1429,9 @@ static void rb_tail_page_update(struct ring_buffer_per_cpu *cpu_buffer, */ local_set(&next_page->page->commit, 0); - /* Again, either we update tail_page or an interrupt does */ - (void)cmpxchg(&cpu_buffer->tail_page, tail_page, next_page); + /* Either we update tail_page or an interrupt does */ + if (try_cmpxchg(&cpu_buffer->tail_page, &tail_page, next_page)) + local_inc(&cpu_buffer->pages_touched); } } |