Back merge 'drm-intel-fixes' into gvt-fixes

Need for 4.17-rc1

Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/include/linux/sbitmap.h b/include/linux/sbitmap.h
index 0dcc60e820de..841585f6e5f2 100644
--- a/include/linux/sbitmap.h
+++ b/include/linux/sbitmap.h
@@ -171,6 +171,8 @@ void sbitmap_resize(struct sbitmap *sb, unsigned int depth);
  *               starting from the last allocated bit. This is less efficient
  *               than the default behavior (false).
  *
+ * This operation provides acquire barrier semantics if it succeeds.
+ *
  * Return: Non-negative allocated bit number if successful, -1 otherwise.
  */
 int sbitmap_get(struct sbitmap *sb, unsigned int alloc_hint, bool round_robin);
@@ -300,6 +302,12 @@ static inline void sbitmap_clear_bit(struct sbitmap *sb, unsigned int bitnr)
 	clear_bit(SB_NR_TO_BIT(sb, bitnr), __sbitmap_word(sb, bitnr));
 }
 
+static inline void sbitmap_clear_bit_unlock(struct sbitmap *sb,
+					    unsigned int bitnr)
+{
+	clear_bit_unlock(SB_NR_TO_BIT(sb, bitnr), __sbitmap_word(sb, bitnr));
+}
+
 static inline int sbitmap_test_bit(struct sbitmap *sb, unsigned int bitnr)
 {
 	return test_bit(SB_NR_TO_BIT(sb, bitnr), __sbitmap_word(sb, bitnr));