diff options
| author | Nathan Lynch <ntl@pobox.com> | 2008-07-27 15:24:52 +1000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2008-07-28 16:30:49 +1000 |
| commit | e2075f79a99b45a6cc10de021c93f07212098a84 (patch) | |
| tree | 8c3ccb423f706336741734d0758219028d765396 /arch/powerpc/kernel/setup-common.c | |
| parent | 9ba1984ead5d25c93d241e0ee43f8f6a252f60d9 (diff) | |
powerpc: Update cpu_sibling_maps dynamically
Rather doing one initialization pass over all the per-cpu
cpu_sibling_maps at boot, update the maps at cpu online/offline time.
This is a behavior change -- the thread_siblings attribute now
reflects only online siblings, whereas it would display offline
siblings before. The new behavior matches that of x86, and is
arguably more useful.
Signed-off-by: Nathan Lynch <ntl@pobox.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/kernel/setup-common.c')
| -rw-r--r-- | arch/powerpc/kernel/setup-common.c | 24 |
1 files changed, 0 insertions, 24 deletions
diff --git a/arch/powerpc/kernel/setup-common.c b/arch/powerpc/kernel/setup-common.c index 61a3f413208..9cc5a52711e 100644 --- a/arch/powerpc/kernel/setup-common.c +++ b/arch/powerpc/kernel/setup-common.c @@ -367,7 +367,6 @@ static void __init cpu_init_thread_core_maps(int tpc) * setup_cpu_maps - initialize the following cpu maps: * cpu_possible_map * cpu_present_map - * cpu_sibling_map * * Having the possible map set up early allows us to restrict allocations * of things like irqstacks to num_possible_cpus() rather than NR_CPUS. @@ -475,29 +474,6 @@ void __init smp_setup_cpu_maps(void) */ cpu_init_thread_core_maps(nthreads); } - -/* - * Being that cpu_sibling_map is now a per_cpu array, then it cannot - * be initialized until the per_cpu areas have been created. This - * function is now called from setup_per_cpu_areas(). - */ -void __init smp_setup_cpu_sibling_map(void) -{ -#ifdef CONFIG_PPC64 - int i, cpu, base; - - for_each_possible_cpu(cpu) { - DBG("Sibling map for CPU %d:", cpu); - base = cpu_first_thread_in_core(cpu); - for (i = 0; i < threads_per_core; i++) { - cpu_set(base + i, per_cpu(cpu_sibling_map, cpu)); - DBG(" %d", base + i); - } - DBG("\n"); - } - -#endif /* CONFIG_PPC64 */ -} #endif /* CONFIG_SMP */ #ifdef CONFIG_PCSPKR_PLATFORM |