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sched: add arch_update_cpu_topology hook.

Will be called each time the scheduling domains are rebuild. Needed for architectures that don't have a static cpu topology.

Heiko Carstens committed 18 years ago

Commit 22e52b01 parent 9aefd0a2 files · +7 −0Browse files

Showing the changes to kernel (1 of 2 files). Show all

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kernel/sched.c+5−0
@@ -6807,6 +6807,10 @@ static int ndoms_cur; /* number of sched domains in 'doms_cur' */ · 6806 unmodified lines
6807 */6807 */
6808static cpumask_t fallback_doms;6808static cpumask_t fallback_doms;
6809 6809
6810void __attribute__((weak)) arch_update_cpu_topology(void)
6811{
6812}
6813
6810/*6814/*
6811 * Set up scheduler domains and groups. Callers must hold the hotplug lock.6815 * Set up scheduler domains and groups. Callers must hold the hotplug lock.
6812 * For now this just excludes isolated cpus, but could be used to6816 * For now this just excludes isolated cpus, but could be used to
@@ -6816,6 +6820,7 @@ static int arch_init_sched_domains(const cpumask_t *cpu_map) · 3 unmodified lines
6816{6820{
6817 int err;6821 int err;
6818 6822
6823 arch_update_cpu_topology();
6819 ndoms_cur = 1;6824 ndoms_cur = 1;
6820 doms_cur = kmalloc(sizeof(cpumask_t), GFP_KERNEL);6825 doms_cur = kmalloc(sizeof(cpumask_t), GFP_KERNEL);
6821 if (!doms_cur)6826 if (!doms_cur)