| commit | f73be6dedf4fa058ce80846dae604b08fa805ca1 | [log] [tgz] |
|---|---|---|
| author | H. Peter Anvin <hpa@zytor.com> | Mon Aug 25 17:07:14 2008 -0700 |
| committer | H. Peter Anvin <hpa@zytor.com> | Mon Aug 25 17:45:48 2008 -0700 |
| tree | eb38c111bedf6b356db3af20ab124dff846643cb | |
| parent | 2a61812af2e564cba2c8170cf96e1c823210f619 [diff] |
smp: have smp_call_function_single() detect invalid CPUs Have smp_call_function_single() return invalid CPU indicies and return -ENXIO. This function is already executed inside a get_cpu()..put_cpu() which locks out CPU removal, so rather than having the higher layers doing another layer of locking to guard against unplugged CPUs do the test here. Signed-off-by: H. Peter Anvin <hpa@zytor.com>