GitHub-Mirror/linux-bl808
2
0
Fork 0
mirror of https://github.com/Fishwaldo/linux-bl808.git synced 2025-06-17 20:25:19 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

locking, rwsem: Annotate inner lock as raw

Browse source 
There is no reason to allow the lock protecting rwsems (the
ownerless variant) to be preemptible on -rt. Convert it to raw.

In mainline this change documents the low level nature of
the lock - otherwise there's no functional difference. Lockdep
and Sparse checking will work as usual.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Thomas Gleixner 2010-02-24 09:54:54 +01:00 • committed by Ingo Molnar
parent 8292c9e15c
commit ddb6c9b58a
4 changed files with 33 additions and 31 deletions
Download patch file Download diff file Expand all files Collapse all files

2
include/linux/rwsem-spinlock.h
View file

@ -22,7 +22,7 @@
*/
struct rw_semaphore {
__s32 activity;
spinlock_t wait_lock;
raw_spinlock_t wait_lock;
struct list_head wait_list;
#ifdef CONFIG_DEBUG_LOCK_ALLOC
struct lockdep_map dep_map;