diff options
| author | NeilBrown <neilb@suse.com> | 2015-09-05 11:07:04 +0200 |
|---|---|---|
| committer | NeilBrown <neilb@suse.com> | 2015-09-05 11:08:32 +0200 |
| commit | e89c6fdf9e0eb1b5a03574d4ca73e83eae8deb91 (patch) | |
| tree | f9df292ed03a5a3c4ddc658ae3646f02a1ffafce /include/linux/preempt.h | |
| parent | c3cce6cda162eb2b2960a85d9c8992f4f3be85d0 (diff) | |
| parent | 1081230b748de8f03f37f80c53dfa89feda9b8de (diff) | |
Merge linux-block/for-4.3/core into md/for-linux
There were a few conflicts that are fairly easy to resolve.
Signed-off-by: NeilBrown <neilb@suse.com>
Diffstat (limited to 'include/linux/preempt.h')
| -rw-r--r-- | include/linux/preempt.h | 19 |
1 files changed, 14 insertions, 5 deletions
diff --git a/include/linux/preempt.h b/include/linux/preempt.h index 84991f185173..bea8dd8ff5e0 100644 --- a/include/linux/preempt.h +++ b/include/linux/preempt.h @@ -84,13 +84,21 @@ */ #define in_nmi() (preempt_count() & NMI_MASK) +/* + * The preempt_count offset after preempt_disable(); + */ #if defined(CONFIG_PREEMPT_COUNT) -# define PREEMPT_DISABLE_OFFSET 1 +# define PREEMPT_DISABLE_OFFSET PREEMPT_OFFSET #else -# define PREEMPT_DISABLE_OFFSET 0 +# define PREEMPT_DISABLE_OFFSET 0 #endif /* + * The preempt_count offset after spin_lock() + */ +#define PREEMPT_LOCK_OFFSET PREEMPT_DISABLE_OFFSET + +/* * The preempt_count offset needed for things like: * * spin_lock_bh() @@ -103,7 +111,7 @@ * * Work as expected. */ -#define SOFTIRQ_LOCK_OFFSET (SOFTIRQ_DISABLE_OFFSET + PREEMPT_DISABLE_OFFSET) +#define SOFTIRQ_LOCK_OFFSET (SOFTIRQ_DISABLE_OFFSET + PREEMPT_LOCK_OFFSET) /* * Are we running in atomic context? WARNING: this macro cannot @@ -124,7 +132,8 @@ #if defined(CONFIG_DEBUG_PREEMPT) || defined(CONFIG_PREEMPT_TRACER) extern void preempt_count_add(int val); extern void preempt_count_sub(int val); -#define preempt_count_dec_and_test() ({ preempt_count_sub(1); should_resched(); }) +#define preempt_count_dec_and_test() \ + ({ preempt_count_sub(1); should_resched(0); }) #else #define preempt_count_add(val) __preempt_count_add(val) #define preempt_count_sub(val) __preempt_count_sub(val) @@ -184,7 +193,7 @@ do { \ #define preempt_check_resched() \ do { \ - if (should_resched()) \ + if (should_resched(0)) \ __preempt_schedule(); \ } while (0) |