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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2017-06-29 14:59:27 +0200 |
|---|---|---|
| committer | Gustavo Padovan <gustavo.padovan@collabora.com> | 2017-06-29 23:52:19 +0200 |
| commit | a6aa8fca4d792c72947e341d7842d2f700534335 (patch) | |
| tree | 2c7ec852941c833728e8badb2c2c70e4b2b66e50 /drivers/dma-buf/sync_debug.c | |
| parent | dma-buf/sw-sync: Prevent user overflow on timeline advance (diff) | |
| download | linux-a6aa8fca4d792c72947e341d7842d2f700534335.tar.xz linux-a6aa8fca4d792c72947e341d7842d2f700534335.zip | |
dma-buf/sw-sync: Reduce irqsave/irqrestore from known context
If we know the context under which we are called, then we can use the
simpler form of spin_lock_irq (saving the save/restore).
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: Sean Paul <seanpaul@chromium.org>
Cc: Gustavo Padovan <gustavo@padovan.org>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170629125930.821-4-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/dma-buf/sync_debug.c')
| -rw-r--r-- | drivers/dma-buf/sync_debug.c | 14 |
1 files changed, 6 insertions, 8 deletions
diff --git a/drivers/dma-buf/sync_debug.c b/drivers/dma-buf/sync_debug.c index 82a6e7f6d37f..0e91632248ba 100644 --- a/drivers/dma-buf/sync_debug.c +++ b/drivers/dma-buf/sync_debug.c @@ -116,17 +116,16 @@ static void sync_print_fence(struct seq_file *s, static void sync_print_obj(struct seq_file *s, struct sync_timeline *obj) { struct list_head *pos; - unsigned long flags; seq_printf(s, "%s: %d\n", obj->name, obj->value); - spin_lock_irqsave(&obj->child_list_lock, flags); + spin_lock_irq(&obj->child_list_lock); list_for_each(pos, &obj->child_list_head) { struct sync_pt *pt = container_of(pos, struct sync_pt, child_list); sync_print_fence(s, &pt->base, false); } - spin_unlock_irqrestore(&obj->child_list_lock, flags); + spin_unlock_irq(&obj->child_list_lock); } static void sync_print_sync_file(struct seq_file *s, @@ -151,12 +150,11 @@ static void sync_print_sync_file(struct seq_file *s, static int sync_debugfs_show(struct seq_file *s, void *unused) { - unsigned long flags; struct list_head *pos; seq_puts(s, "objs:\n--------------\n"); - spin_lock_irqsave(&sync_timeline_list_lock, flags); + spin_lock_irq(&sync_timeline_list_lock); list_for_each(pos, &sync_timeline_list_head) { struct sync_timeline *obj = container_of(pos, struct sync_timeline, @@ -165,11 +163,11 @@ static int sync_debugfs_show(struct seq_file *s, void *unused) sync_print_obj(s, obj); seq_putc(s, '\n'); } - spin_unlock_irqrestore(&sync_timeline_list_lock, flags); + spin_unlock_irq(&sync_timeline_list_lock); seq_puts(s, "fences:\n--------------\n"); - spin_lock_irqsave(&sync_file_list_lock, flags); + spin_lock_irq(&sync_file_list_lock); list_for_each(pos, &sync_file_list_head) { struct sync_file *sync_file = container_of(pos, struct sync_file, sync_file_list); @@ -177,7 +175,7 @@ static int sync_debugfs_show(struct seq_file *s, void *unused) sync_print_sync_file(s, sync_file); seq_putc(s, '\n'); } - spin_unlock_irqrestore(&sync_file_list_lock, flags); + spin_unlock_irq(&sync_file_list_lock); return 0; } |