diff options
| author | Kanoj Sarcar <kanoj@engr.sgi.com> | 2000-03-31 08:40:48 +0000 |
|---|---|---|
| committer | Kanoj Sarcar <kanoj@engr.sgi.com> | 2000-03-31 08:40:48 +0000 |
| commit | 99b6ed6d742212be01c15caac8780b60d86d5bb6 (patch) | |
| tree | 054f6e59b6a1fe0b36e8428e06777f4c19bea024 /include | |
| parent | dbaa254b6c265680320c9fa208d9643d074d5c18 (diff) | |
Put an instruction in the branch delay slot of the read_unlock()
block which is compiled .noreorder, to prevent the assembler from putting
something destructive.
Diffstat (limited to 'include')
| -rw-r--r-- | include/asm-mips64/spinlock.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/asm-mips64/spinlock.h b/include/asm-mips64/spinlock.h index 8787de4da..a2d269d29 100644 --- a/include/asm-mips64/spinlock.h +++ b/include/asm-mips64/spinlock.h @@ -113,6 +113,7 @@ static inline void read_unlock(rwlock_t *rw) "sub\t%1, 1\n\t" "sc\t%1, %0\n\t" "beqz\t%1, 1b\n\t" + "sync\n\t" ".set\treorder" : "=o" (__dummy_lock(rw)), "=&r" (tmp) : "o" (__dummy_lock(rw)) |