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authorNathan Lynch <ntl@pobox.com>2007-01-11 02:15:28 -0500
committerLinus Torvalds <torvalds@woody.osdl.org>2007-01-11 21:18:20 -0500
commite5e5673f828623e58a401862b33173591faaeaff (patch)
tree51af4f3295f5104217e90d75af6df881b851b3be
parentc71551ad309c46d9d2433a9b688491edbd10c806 (diff)
[PATCH] sched: tasks cannot run on cpus onlined after boot
Commit 5c1e176781f43bc902a51e5832f789756bff911b ("sched: force /sbin/init off isolated cpus") sets init's cpus_allowed to a subset of cpu_online_map at boot time, which means that tasks won't be scheduled on cpus that are added to the system later. Make init's cpus_allowed a subset of cpu_possible_map instead. This should still preserve the behavior that Nick's change intended. Thanks to Giuliano Pochini for reporting this and testing the fix: http://ozlabs.org/pipermail/linuxppc-dev/2006-December/029397.html Signed-off-by: Nathan Lynch <ntl@pobox.com> Acked-by: Ingo Molnar <mingo@elte.hu> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
-rw-r--r--kernel/sched.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/sched.c b/kernel/sched.c
index 3df33da0dafc..cca93cc0dd7d 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -6865,7 +6865,7 @@ void __init sched_init_smp(void)
6865 6865
6866 lock_cpu_hotplug(); 6866 lock_cpu_hotplug();
6867 arch_init_sched_domains(&cpu_online_map); 6867 arch_init_sched_domains(&cpu_online_map);
6868 cpus_andnot(non_isolated_cpus, cpu_online_map, cpu_isolated_map); 6868 cpus_andnot(non_isolated_cpus, cpu_possible_map, cpu_isolated_map);
6869 if (cpus_empty(non_isolated_cpus)) 6869 if (cpus_empty(non_isolated_cpus))
6870 cpu_set(smp_processor_id(), non_isolated_cpus); 6870 cpu_set(smp_processor_id(), non_isolated_cpus);
6871 unlock_cpu_hotplug(); 6871 unlock_cpu_hotplug();