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| author | Rusty Russell <rusty@rustcorp.com.au> | 2009-03-25 00:17:19 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-03-25 20:48:29 +0300 |
| commit | e06b1b56f9bfcc91e1f175fe8d8bf3e35dafa080 (patch) | |
| tree | 7bb1a3a9e38bb8af4ead2177573c17356e16563d /arch/x86/kernel/vsmp_64.c | |
| parent | f56e5034121c4911a155ba907076ab920754626d (diff) | |
| download | linux-e06b1b56f9bfcc91e1f175fe8d8bf3e35dafa080.tar.xz | |
x86: Correct behaviour of irq affinity
Impact: get correct smp_affinity as user requested
The effect of setting desc->affinity (ie. from userspace via sysfs) has
varied over time. In 2.6.27, the 32-bit code anded the value with
cpu_online_map, and both 32 and 64-bit did that anding whenever a cpu
was unplugged.
2.6.29 consolidated this into one routine (and fixed hotplug) but
introduced another variation: anding the affinity with cfg->domain.
We should just set it to what the user said - if possible.
(cpu_mask_to_apicid_and already takes cpu_online_mask into account)
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Acked-by: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
LKML-Reference: <49C94DDF.2010703@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/vsmp_64.c')
0 files changed, 0 insertions, 0 deletions