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| author | Rusty Russell <rusty@rustcorp.com.au> | 2009-01-01 10:12:28 +1030 |
|---|---|---|
| committer | Rusty Russell <rusty@rustcorp.com.au> | 2009-01-01 10:12:28 +1030 |
| commit | 41c7bb9588904eb060a95bcad47bd3804a1ece25 (patch) | |
| tree | ccae4bd3cb26be171fad9e26147ef8839405f298 /kernel/softlockup.c | |
| parent | e0b582ec56f1a1d8b30ebf340a7b91fb09f26c8c (diff) | |
| download | lwn-41c7bb9588904eb060a95bcad47bd3804a1ece25.tar.gz lwn-41c7bb9588904eb060a95bcad47bd3804a1ece25.zip | |
cpumask: convert rest of files in kernel/
Impact: Reduce stack usage, use new cpumask API.
Mainly changing cpumask_t to 'struct cpumask' and similar simple API
conversion. Two conversions worth mentioning:
1) we use cpumask_any_but to avoid a temporary in kernel/softlockup.c,
2) Use cpumask_var_t in taskstats_user_cmd().
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Mike Travis <travis@sgi.com>
Cc: Balbir Singh <balbir@linux.vnet.ibm.com>
Cc: Ingo Molnar <mingo@redhat.com>
Diffstat (limited to 'kernel/softlockup.c')
| -rw-r--r-- | kernel/softlockup.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/kernel/softlockup.c b/kernel/softlockup.c index 492f0c72fec5..d9188c66278a 100644 --- a/kernel/softlockup.c +++ b/kernel/softlockup.c @@ -310,10 +310,8 @@ cpu_callback(struct notifier_block *nfb, unsigned long action, void *hcpu) case CPU_DOWN_PREPARE: case CPU_DOWN_PREPARE_FROZEN: if (hotcpu == check_cpu) { - cpumask_t temp_cpu_online_map = cpu_online_map; - - cpu_clear(hotcpu, temp_cpu_online_map); - check_cpu = cpumask_any(&temp_cpu_online_map); + /* Pick any other online cpu. */ + check_cpu = cpumask_any_but(cpu_online_mask, hotcpu); } break; |