diff options
Diffstat (limited to 'arch/sparc')
| -rw-r--r-- | arch/sparc/include/asm/spinlock_64.h | 17 |
1 files changed, 6 insertions, 11 deletions
diff --git a/arch/sparc/include/asm/spinlock_64.h b/arch/sparc/include/asm/spinlock_64.h index 120cfe4577c..fbac9d00744 100644 --- a/arch/sparc/include/asm/spinlock_64.h +++ b/arch/sparc/include/asm/spinlock_64.h @@ -13,17 +13,12 @@ * and rebuild your kernel. */ -/* All of these locking primitives are expected to work properly - * even in an RMO memory model, which currently is what the kernel - * runs in. - * - * There is another issue. Because we play games to save cycles - * in the non-contention case, we need to be extra careful about - * branch targets into the "spinning" code. They live in their - * own section, but the newer V9 branches have a shorter range - * than the traditional 32-bit sparc branch variants. The rule - * is that the branches that go into and out of the spinner sections - * must be pre-V9 branches. +/* Because we play games to save cycles in the non-contention case, we + * need to be extra careful about branch targets into the "spinning" + * code. They live in their own section, but the newer V9 branches + * have a shorter range than the traditional 32-bit sparc branch + * variants. The rule is that the branches that go into and out of + * the spinner sections must be pre-V9 branches. */ #define __raw_spin_is_locked(lp) ((lp)->lock != 0) |