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| author | Rusty Russell <rusty@rustcorp.com.au> | 2009-03-13 14:49:50 +1030 |
|---|---|---|
| committer | Rusty Russell <rusty@rustcorp.com.au> | 2009-03-13 14:49:50 +1030 |
| commit | 7ad728f98162cb1af06a85b2a5fc422dddd4fb78 (patch) | |
| tree | 85a326e35ff5d37d89aa7a687a623cded6fcb190 /arch/x86/kernel/smpboot.c | |
| parent | fcef8576d8a64fc603e719c97d423f9f6d4e0e8b (diff) | |
| download | blackbird-obmc-linux-7ad728f98162cb1af06a85b2a5fc422dddd4fb78.tar.gz blackbird-obmc-linux-7ad728f98162cb1af06a85b2a5fc422dddd4fb78.zip | |
cpumask: x86: convert cpu_sibling_map/cpu_core_map to cpumask_var_t
Impact: reduce per-cpu size for CONFIG_CPUMASK_OFFSTACK=y
In most places it's cleaner to use the accessors cpu_sibling_mask()
and cpu_core_mask() wrappers which already exist.
I couldn't avoid cleaning up the access in oprofile, either.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'arch/x86/kernel/smpboot.c')
| -rw-r--r-- | arch/x86/kernel/smpboot.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c index f534257d4b46..7f051c170add 100644 --- a/arch/x86/kernel/smpboot.c +++ b/arch/x86/kernel/smpboot.c @@ -101,11 +101,11 @@ EXPORT_SYMBOL(smp_num_siblings); DEFINE_PER_CPU(u16, cpu_llc_id) = BAD_APICID; /* representing HT siblings of each logical CPU */ -DEFINE_PER_CPU(cpumask_t, cpu_sibling_map); +DEFINE_PER_CPU(cpumask_var_t, cpu_sibling_map); EXPORT_PER_CPU_SYMBOL(cpu_sibling_map); /* representing HT and core siblings of each logical CPU */ -DEFINE_PER_CPU(cpumask_t, cpu_core_map); +DEFINE_PER_CPU(cpumask_var_t, cpu_core_map); EXPORT_PER_CPU_SYMBOL(cpu_core_map); /* Per CPU bogomips and other parameters */ @@ -1026,6 +1026,8 @@ static void __init smp_cpu_index_default(void) */ void __init native_smp_prepare_cpus(unsigned int max_cpus) { + unsigned int i; + preempt_disable(); smp_cpu_index_default(); current_cpu_data = boot_cpu_data; @@ -1039,6 +1041,12 @@ void __init native_smp_prepare_cpus(unsigned int max_cpus) boot_cpu_logical_apicid = logical_smp_processor_id(); #endif current_thread_info()->cpu = 0; /* needed? */ + for_each_possible_cpu(i) { + alloc_cpumask_var(&per_cpu(cpu_sibling_map, i), GFP_KERNEL); + alloc_cpumask_var(&per_cpu(cpu_core_map, i), GFP_KERNEL); + cpumask_clear(per_cpu(cpu_core_map, i)); + cpumask_clear(per_cpu(cpu_sibling_map, i)); + } set_cpu_sibling_map(0); enable_IR_x2apic(); |
