]> git.baikalelectronics.ru Git - kernel.git/commit
projects / kernel.git / commit
? search:
summary | shortlog | log | commit | commitdiff | tree
(parent: 06d1905) | patch
smp: have smp_call_function_single() detect invalid CPUs
authorH. Peter Anvin <hpa@zytor.com>
Tue, 26 Aug 2008 00:07:14 +0000 (17:07 -0700)
committerH. Peter Anvin <hpa@zytor.com>
Tue, 26 Aug 2008 00:45:48 +0000 (17:45 -0700)
commit248b845d4ba6f0bdea1d59f86b91f61235043824
treeeb38c111bedf6b356db3af20ab124dff846643cbtree | snapshot
parent06d19054bcf263bb7af8922f86353dab6de4bb94commit | 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>
kernel/smp.c diff | blob | history
Linux Kernel Source Tree.