diff options
| author | Paul Mackerras <paulus@samba.org> | 2004-08-22 22:31:55 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2004-08-22 22:31:55 -0700 |
| commit | 8861f2cb3e6e254ec4e5b56768b1bc179b003903 (patch) | |
| tree | 2ade9c710dabf127ca2a18e2b792a4a57133eed7 /include | |
| parent | 7d2d3531e457993f49d3d57edd5c540d62928ce1 (diff) | |
[PATCH] ppc64: Don't call scheduler on offline cpu
When taking a cpu offline, once the cpu has been removed from
cpu_online_map, it is not supposed to service any more interrupts. This
presents a problem on ppc64 because we cannot truly disable the
decrementer. There used to be cpu_is_offline() checks in several scheduler
functions (e.g. rebalance_tick()) which papered over this issue, but these
checks were removed recently. So with recent 2.6 kernels, an attempt to
offline a cpu can result in a crash in find_busiest_group(). This patch
prevents such crashes.
Signed-off-by: Nathan Lynch <nathanl@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include')
0 files changed, 0 insertions, 0 deletions