| commit | 9985b0bab332289f14837eff3c6e0bcc658b58f7 | |
| author | David Rientjes <rientjes@google.com> | |
| Thu, 5 Jun 2008 19:57:11 +0000 (5 12:57 -0700) | ||
| committer | Ingo Molnar <mingo@elte.hu> | |
| Tue, 10 Jun 2008 10:26:16 +0000 (10 12:26 +0200) | ||
| tree | 8c4bcbc4348c473b14644dc4d371a45c0dabda53 | treesnapshot (tar.gz zip) |
| parent | 7def2be1dc679984f4c4fb3ef19a8a081b2454ec | commitdiff |
sched: prevent bound kthreads from changing cpus_allowed
Kthreads that have called kthread_bind() are bound to specific cpus, so
other tasks should not be able to change their cpus_allowed from under
them. Otherwise, it is possible to move kthreads, such as the migration
or software watchdog threads, so they are not allowed access to the cpu
they work on.
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Paul Menage <menage@google.com>
Cc: Paul Jackson <pj@sgi.com>
Signed-off-by: David Rientjes <rientjes@google.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Kthreads that have called kthread_bind() are bound to specific cpus, so
other tasks should not be able to change their cpus_allowed from under
them. Otherwise, it is possible to move kthreads, such as the migration
or software watchdog threads, so they are not allowed access to the cpu
they work on.
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Paul Menage <menage@google.com>
Cc: Paul Jackson <pj@sgi.com>
Signed-off-by: David Rientjes <rientjes@google.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
| include/linux/sched.h | diffblobblamehistory | |
| kernel/cpuset.c | diffblobblamehistory | |
| kernel/kthread.c | diffblobblamehistory | |
| kernel/sched.c | diffblobblamehistory |