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author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-03-15 19:00:53 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-03-15 19:00:53 -0700 |
commit | 502f4d4f74219749a9758b9bbc27fb665b2e83ab (patch) | |
tree | 78076e71ea6e455354913005f04b53cff124553f /arch/x86/kernel/smpboot.c | |
parent | da849abeb86ddaa093b0935fde595e8e4dd21ffc (diff) | |
parent | e5fea868e6c04343e501176a373d568c1c0094aa (diff) | |
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Merge branch 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86: Fix and clean up generic_processor_info()
x86: Don't copy per_cpu cpuinfo for BSP two times
x86: Move llc_shared_map out of cpu_info
Diffstat (limited to 'arch/x86/kernel/smpboot.c')
-rw-r--r-- | arch/x86/kernel/smpboot.c | 44 |
1 files changed, 13 insertions, 31 deletions
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c index 08776a9..e2865df 100644 --- a/arch/x86/kernel/smpboot.c +++ b/arch/x86/kernel/smpboot.c @@ -130,6 +130,8 @@ EXPORT_PER_CPU_SYMBOL(cpu_sibling_map); DEFINE_PER_CPU(cpumask_var_t, cpu_core_map); EXPORT_PER_CPU_SYMBOL(cpu_core_map); +DEFINE_PER_CPU(cpumask_var_t, cpu_llc_shared_map); + /* Per CPU bogomips and other parameters */ DEFINE_PER_CPU_SHARED_ALIGNED(struct cpuinfo_x86, cpu_info); EXPORT_PER_CPU_SYMBOL(cpu_info); @@ -355,23 +357,6 @@ notrace static void __cpuinit start_secondary(void *unused) cpu_idle(); } -#ifdef CONFIG_CPUMASK_OFFSTACK -/* In this case, llc_shared_map is a pointer to a cpumask. */ -static inline void copy_cpuinfo_x86(struct cpuinfo_x86 *dst, - const struct cpuinfo_x86 *src) -{ - struct cpumask *llc = dst->llc_shared_map; - *dst = *src; - dst->llc_shared_map = llc; -} -#else -static inline void copy_cpuinfo_x86(struct cpuinfo_x86 *dst, - const struct cpuinfo_x86 *src) -{ - *dst = *src; -} -#endif /* CONFIG_CPUMASK_OFFSTACK */ - /* * The bootstrap kernel entry code has set these up. Save them for * a given CPU @@ -381,7 +366,7 @@ void __cpuinit smp_store_cpu_info(int id) { struct cpuinfo_x86 *c = &cpu_data(id); - copy_cpuinfo_x86(c, &boot_cpu_data); + *c = boot_cpu_data; c->cpu_index = id; if (id != 0) identify_secondary_cpu(c); @@ -389,15 +374,12 @@ void __cpuinit smp_store_cpu_info(int id) static void __cpuinit link_thread_siblings(int cpu1, int cpu2) { - struct cpuinfo_x86 *c1 = &cpu_data(cpu1); - struct cpuinfo_x86 *c2 = &cpu_data(cpu2); - cpumask_set_cpu(cpu1, cpu_sibling_mask(cpu2)); cpumask_set_cpu(cpu2, cpu_sibling_mask(cpu1)); cpumask_set_cpu(cpu1, cpu_core_mask(cpu2)); cpumask_set_cpu(cpu2, cpu_core_mask(cpu1)); - cpumask_set_cpu(cpu1, c2->llc_shared_map); - cpumask_set_cpu(cpu2, c1->llc_shared_map); + cpumask_set_cpu(cpu1, cpu_llc_shared_mask(cpu2)); + cpumask_set_cpu(cpu2, cpu_llc_shared_mask(cpu1)); } @@ -425,7 +407,7 @@ void __cpuinit set_cpu_sibling_map(int cpu) cpumask_set_cpu(cpu, cpu_sibling_mask(cpu)); } - cpumask_set_cpu(cpu, c->llc_shared_map); + cpumask_set_cpu(cpu, cpu_llc_shared_mask(cpu)); if (__this_cpu_read(cpu_info.x86_max_cores) == 1) { cpumask_copy(cpu_core_mask(cpu), cpu_sibling_mask(cpu)); @@ -436,8 +418,8 @@ void __cpuinit set_cpu_sibling_map(int cpu) for_each_cpu(i, cpu_sibling_setup_mask) { if (per_cpu(cpu_llc_id, cpu) != BAD_APICID && per_cpu(cpu_llc_id, cpu) == per_cpu(cpu_llc_id, i)) { - cpumask_set_cpu(i, c->llc_shared_map); - cpumask_set_cpu(cpu, cpu_data(i).llc_shared_map); + cpumask_set_cpu(i, cpu_llc_shared_mask(cpu)); + cpumask_set_cpu(cpu, cpu_llc_shared_mask(i)); } if (c->phys_proc_id == cpu_data(i).phys_proc_id) { cpumask_set_cpu(i, cpu_core_mask(cpu)); @@ -476,7 +458,7 @@ const struct cpumask *cpu_coregroup_mask(int cpu) !(cpu_has(c, X86_FEATURE_AMD_DCM))) return cpu_core_mask(cpu); else - return c->llc_shared_map; + return cpu_llc_shared_mask(cpu); } static void impress_friends(void) @@ -1089,13 +1071,13 @@ void __init native_smp_prepare_cpus(unsigned int max_cpus) preempt_disable(); smp_cpu_index_default(); - memcpy(__this_cpu_ptr(&cpu_info), &boot_cpu_data, sizeof(cpu_info)); - cpumask_copy(cpu_callin_mask, cpumask_of(0)); - mb(); + /* * Setup boot CPU information */ smp_store_cpu_info(0); /* Final full version of the data */ + cpumask_copy(cpu_callin_mask, cpumask_of(0)); + mb(); #ifdef CONFIG_X86_32 boot_cpu_logical_apicid = logical_smp_processor_id(); #endif @@ -1103,7 +1085,7 @@ void __init native_smp_prepare_cpus(unsigned int max_cpus) for_each_possible_cpu(i) { zalloc_cpumask_var(&per_cpu(cpu_sibling_map, i), GFP_KERNEL); zalloc_cpumask_var(&per_cpu(cpu_core_map, i), GFP_KERNEL); - zalloc_cpumask_var(&cpu_data(i).llc_shared_map, GFP_KERNEL); + zalloc_cpumask_var(&per_cpu(cpu_llc_shared_map, i), GFP_KERNEL); } set_cpu_sibling_map(0); |