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| author | Andrew Morton <akpm@linux-foundation.org> | 2008-11-12 13:26:57 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-11-12 17:17:17 -0800 |
| commit | 7e036d040a28bf95255d7eb9faf0ffbba3677e99 (patch) | |
| tree | 98203974c15ae4fc5aee5723b385b0f45c331ec7 | |
| parent | 084c304980f05833bc8a91b856af7dc7a7bb7d60 (diff) | |
| download | lwn-7e036d040a28bf95255d7eb9faf0ffbba3677e99.tar.gz lwn-7e036d040a28bf95255d7eb9faf0ffbba3677e99.zip | |
kernel/kprobes.c: don't pad kretprobe_table_locks[] on uniprocessor builds
We only need the cacheline padding on SMP kernels. Saves 6k:
text data bss dec hex filename
5713 388 8840 14941 3a5d kernel/kprobes.o
5713 388 2632 8733 221d kernel/kprobes.o
Acked-by: Masami Hiramatsu <mhiramat@redhat.com>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | kernel/kprobes.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/kprobes.c b/kernel/kprobes.c index f83c5e42fb07..9f8a3f25259a 100644 --- a/kernel/kprobes.c +++ b/kernel/kprobes.c @@ -72,7 +72,7 @@ static bool kprobe_enabled; DEFINE_MUTEX(kprobe_mutex); /* Protects kprobe_table */ static DEFINE_PER_CPU(struct kprobe *, kprobe_instance) = NULL; static struct { - spinlock_t lock ____cacheline_aligned; + spinlock_t lock ____cacheline_aligned_in_smp; } kretprobe_table_locks[KPROBE_TABLE_SIZE]; static spinlock_t *kretprobe_table_lock_ptr(unsigned long hash) |