diff options
| author | David Howells <dhowells@redhat.com> | 2010-10-27 18:28:46 +0200 |
|---|---|---|
| committer | David Howells <dhowells@redhat.com> | 2010-10-27 18:28:46 +0200 |
| commit | b478491f2628114b2eae76587f22ce3789b66012 (patch) | |
| tree | 038580a05fa1a3c8c9cbee0fa8743af2bba650b9 /arch/mn10300/kernel | |
| parent | MN10300: AM34: Add cacheflushing by using the AM34 purge registers (diff) | |
| download | linux-b478491f2628114b2eae76587f22ce3789b66012.tar.xz linux-b478491f2628114b2eae76587f22ce3789b66012.zip | |
MN10300: Allow some cacheflushes to be avoided if cache snooping is available
The AM34 core is able to do cache snooping, and so can skip some of the cache
flushing.
Signed-off-by: David Howells <dhowells@redhat.com>
Diffstat (limited to 'arch/mn10300/kernel')
| -rw-r--r-- | arch/mn10300/kernel/kprobes.c | 4 | ||||
| -rw-r--r-- | arch/mn10300/kernel/traps.c | 2 |
2 files changed, 6 insertions, 0 deletions
diff --git a/arch/mn10300/kernel/kprobes.c b/arch/mn10300/kernel/kprobes.c index 67e6389d625a..0311a7fcea16 100644 --- a/arch/mn10300/kernel/kprobes.c +++ b/arch/mn10300/kernel/kprobes.c @@ -377,8 +377,10 @@ void __kprobes arch_arm_kprobe(struct kprobe *p) void __kprobes arch_disarm_kprobe(struct kprobe *p) { +#ifndef CONFIG_MN10300_CACHE_SNOOP mn10300_dcache_flush(); mn10300_icache_inv(); +#endif } void arch_remove_kprobe(struct kprobe *p) @@ -390,8 +392,10 @@ void __kprobes disarm_kprobe(struct kprobe *p, struct pt_regs *regs) { *p->addr = p->opcode; regs->pc = (unsigned long) p->addr; +#ifndef CONFIG_MN10300_CACHE_SNOOP mn10300_dcache_flush(); mn10300_icache_inv(); +#endif } static inline diff --git a/arch/mn10300/kernel/traps.c b/arch/mn10300/kernel/traps.c index a64604b512d5..c7257a1304a9 100644 --- a/arch/mn10300/kernel/traps.c +++ b/arch/mn10300/kernel/traps.c @@ -533,8 +533,10 @@ void __init set_intr_stub(enum exception_code code, void *handler) vector[6] = 0xcb; vector[7] = 0xcb; +#ifndef CONFIG_MN10300_CACHE_SNOOP mn10300_dcache_flush_inv(); mn10300_icache_inv(); +#endif } /* |