diff options
| author | Grant Grundler <grundler@parisc-linux.org> | 2005-10-21 22:40:24 -0400 |
|---|---|---|
| committer | Kyle McMartin <kyle@parisc-linux.org> | 2005-10-21 22:40:24 -0400 |
| commit | 04d472dc83388c59deb6241e9aed841926aa1c8c (patch) | |
| tree | b6ebff62c0f62416f9c84bb24e1d6b2901661e02 /include/asm-parisc/tlbflush.h | |
| parent | 896a375623c3643a3f189353e7d4828c48a7fdf8 (diff) | |
[PARISC] Move pa_tlb_lock to tlb_flush.h
move pa_tlb_lock and it's primary consumers to tlb_flush.h
Future step will be to move spinlock_t definition out of system.h.
Signed-off-by: Grant Grundler <grundler@parisc-linux.org>
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
Diffstat (limited to 'include/asm-parisc/tlbflush.h')
| -rw-r--r-- | include/asm-parisc/tlbflush.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/include/asm-parisc/tlbflush.h b/include/asm-parisc/tlbflush.h index efbb2d8625b1..84af4ab1fe51 100644 --- a/include/asm-parisc/tlbflush.h +++ b/include/asm-parisc/tlbflush.h @@ -7,6 +7,26 @@ #include <linux/mm.h> #include <asm/mmu_context.h> + +/* This is for the serialisation of PxTLB broadcasts. At least on the + * N class systems, only one PxTLB inter processor broadcast can be + * active at any one time on the Merced bus. This tlb purge + * synchronisation is fairly lightweight and harmless so we activate + * it on all SMP systems not just the N class. */ +#ifdef CONFIG_SMP +extern spinlock_t pa_tlb_lock; + +#define purge_tlb_start(x) spin_lock(&pa_tlb_lock) +#define purge_tlb_end(x) spin_unlock(&pa_tlb_lock) + +#else + +#define purge_tlb_start(x) do { } while(0) +#define purge_tlb_end(x) do { } while (0) + +#endif + + extern void flush_tlb_all(void); /* |