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 <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: "H. Peter Anvin" <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: Jacob Shin <[email protected]> Cc: Dave Hansen <[email protected]> Cc: Andy Lutomirski <[email protected]> Cc: Paolo Bonzini <[email protected]> Cc: Denys Vlasenko <[email protected]> Cc: Hector Marco-Gisbert <[email protected]> Signed-off-by: Aravind Gopalakrishnan <[email protected]> --- 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 487083b..788655a 100644 --- a/arch/x86/kernel/cpu/amd.c +++ b/arch/x86/kernel/cpu/amd.c @@ -373,6 +373,12 @@ 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
