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| author | Ralf Baechle <ralf@linux-mips.org> | 2005-07-15 17:44:02 +0200 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2005-10-29 20:31:55 +0200 |
| commit | ae1b3d51c89a96c641111e2c103557592577cf51 (patch) | |
| tree | 1aae0a75db788d079c5e79646082bec192709250 /arch/mips/kernel | |
| parent | Avoid SMP cacheflushes. This is a minor optimization of startup but (diff) | |
| download | linux-ae1b3d51c89a96c641111e2c103557592577cf51.tar.xz linux-ae1b3d51c89a96c641111e2c103557592577cf51.zip | |
Make sure that the processor is actually online or die spectacularly.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/kernel')
| -rw-r--r-- | arch/mips/kernel/smp.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/mips/kernel/smp.c b/arch/mips/kernel/smp.c index 25762917e822..798fce509398 100644 --- a/arch/mips/kernel/smp.c +++ b/arch/mips/kernel/smp.c @@ -142,6 +142,11 @@ int smp_call_function (void (*func) (void *info), void *info, int retry, int i, cpus = num_online_cpus() - 1; int cpu = smp_processor_id(); + /* + * Can die spectacularly if this CPU isn't yet marked online + */ + BUG_ON(!cpu_online(cpu)); + if (!cpus) return 0; |