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| author | Ingo Molnar <mingo@elte.hu> | 2008-09-11 13:37:28 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-09-11 13:37:28 +0200 |
| commit | 09b22a2f678ae733801b888c44756d0abd686b8a (patch) | |
| tree | 6ca52d4011ce6b11c6450d3a574ea6a53cc0d339 /kernel/sched.c | |
| parent | kernel/cpu.c: Move the CPU_DYING notifiers (diff) | |
| parent | Linux 2.6.27-rc6 (diff) | |
| download | linux-09b22a2f678ae733801b888c44756d0abd686b8a.tar.xz linux-09b22a2f678ae733801b888c44756d0abd686b8a.zip | |
Merge commit 'v2.6.27-rc6' into sched/devel
Diffstat (limited to 'kernel/sched.c')
| -rw-r--r-- | kernel/sched.c | 19 |
1 files changed, 13 insertions, 6 deletions
diff --git a/kernel/sched.c b/kernel/sched.c index 8626ae50ce08..0d8905a1b8ca 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -7746,24 +7746,27 @@ static int dattrs_equal(struct sched_domain_attr *cur, int idx_cur, * and partition_sched_domains() will fallback to the single partition * 'fallback_doms', it also forces the domains to be rebuilt. * + * If doms_new==NULL it will be replaced with cpu_online_map. + * ndoms_new==0 is a special case for destroying existing domains. + * It will not create the default domain. + * * Call with hotplug lock held */ void partition_sched_domains(int ndoms_new, cpumask_t *doms_new, struct sched_domain_attr *dattr_new) { - int i, j; + int i, j, n; mutex_lock(&sched_domains_mutex); /* always unregister in case we don't destroy any domains */ unregister_sched_domain_sysctl(); - if (doms_new == NULL) - ndoms_new = 0; + n = doms_new ? ndoms_new : 0; /* Destroy deleted domains */ for (i = 0; i < ndoms_cur; i++) { - for (j = 0; j < ndoms_new; j++) { + for (j = 0; j < n; j++) { if (cpus_equal(doms_cur[i], doms_new[j]) && dattrs_equal(dattr_cur, i, dattr_new, j)) goto match1; @@ -7776,7 +7779,6 @@ match1: if (doms_new == NULL) { ndoms_cur = 0; - ndoms_new = 1; doms_new = &fallback_doms; cpus_andnot(doms_new[0], cpu_online_map, cpu_isolated_map); dattr_new = NULL; @@ -7813,8 +7815,13 @@ match2: int arch_reinit_sched_domains(void) { get_online_cpus(); + + /* Destroy domains first to force the rebuild */ + partition_sched_domains(0, NULL, NULL); + rebuild_sched_domains(); put_online_cpus(); + return 0; } @@ -7898,7 +7905,7 @@ static int update_sched_domains(struct notifier_block *nfb, case CPU_ONLINE_FROZEN: case CPU_DEAD: case CPU_DEAD_FROZEN: - partition_sched_domains(0, NULL, NULL); + partition_sched_domains(1, NULL, NULL); return NOTIFY_OK; default: |