Messages in this thread Patch in this message | | | From | Aravind Gopalakrishnan <> | Subject | [PATCH V2 8/9] x86, amd: Provide accessor for number of nodes | Date | Tue, 2 Jun 2015 15:36:01 -0500 |
| |
Add an accessor function amd_get_nodes_cnt() which returns the number of nodes per socket.
In a subsequent patch, we will use this info in EDAC mce_amd_inj module.
Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Borislav Petkov <bp@suse.de> Cc: Jacob Shin <jacob.w.shin@gmail.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: Hector Marco-Gisbert <hecmargi@upv.es> Signed-off-by: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com> --- arch/x86/include/asm/processor.h | 1 + arch/x86/kernel/cpu/amd.c | 6 ++++++ 2 files changed, 7 insertions(+)
diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h index 8e04f51..34faf24 100644 --- a/arch/x86/include/asm/processor.h +++ b/arch/x86/include/asm/processor.h @@ -820,6 +820,7 @@ static inline int mpx_disable_management(struct task_struct *tsk) #endif /* CONFIG_X86_INTEL_MPX */ extern u16 amd_get_nb_id(int cpu); +extern u32 amd_get_nodes_cnt(void); static inline uint32_t hypervisor_cpuid_base(const char *sig, uint32_t leaves) { diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c index c595669..e91b9bd 100644 --- a/arch/x86/kernel/cpu/amd.c +++ b/arch/x86/kernel/cpu/amd.c @@ -384,6 +384,12 @@ u16 amd_get_nb_id(int cpu) } EXPORT_SYMBOL_GPL(amd_get_nb_id); +u32 amd_get_nodes_cnt(void) +{ + return nodes_per_processor; +} +EXPORT_SYMBOL_GPL(amd_get_nodes_cnt); + static void srat_detect_node(struct cpuinfo_x86 *c) { #ifdef CONFIG_NUMA -- 2.4.0
| |