Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=e5e5673f828623e58a401862b33173591faaeaff
Commit: e5e5673f828623e58a401862b33173591faaeaff
Parent: c71551ad309c46d9d2433a9b688491edbd10c806
Author: Nathan Lynch <[EMAIL PROTECTED]>
AuthorDate: Wed Jan 10 23:15:28 2007 -0800
Committer: Linus Torvalds <[EMAIL PROTECTED]>
CommitDate: Thu Jan 11 18:18:20 2007 -0800
[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 <[EMAIL PROTECTED]>
Acked-by: Ingo Molnar <[EMAIL PROTECTED]>
Cc: Nick Piggin <[EMAIL PROTECTED]>
Cc: <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>
---
kernel/sched.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/kernel/sched.c b/kernel/sched.c
index 3df33da..cca93cc 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -6865,7 +6865,7 @@ void __init sched_init_smp(void)
lock_cpu_hotplug();
arch_init_sched_domains(&cpu_online_map);
- cpus_andnot(non_isolated_cpus, cpu_online_map, cpu_isolated_map);
+ cpus_andnot(non_isolated_cpus, cpu_possible_map, cpu_isolated_map);
if (cpus_empty(non_isolated_cpus))
cpu_set(smp_processor_id(), non_isolated_cpus);
unlock_cpu_hotplug();
-
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