From: Borislav Petkov bpetkov@suse.de

commit f8b64d08dde2714c62751d18ba77f4aeceb161d3 upstream

Move smp_num_siblings and cpu_llc_id to cpu/common.c so that they're always present as symbols and not only in the CONFIG_SMP case. Then, other code using them doesn't need ugly ifdeffery anymore. Get rid of some ifdeffery.

Signed-off-by: Borislav Petkov bpetkov@suse.de Signed-off-by: Suravee Suthikulpanit suravee.suthikulpanit@amd.com Signed-off-by: Borislav Petkov bp@suse.de Signed-off-by: Thomas Gleixner tglx@linutronix.de Link: http://lkml.kernel.org/r/1524864877-111962-2-git-send-email-suravee.suthikul... Signed-off-by: Guenter Roeck linux@roeck-us.net --- Needed for x86_64:allnoconfig.

arch/x86/include/asm/smp.h | 1 - arch/x86/kernel/cpu/amd.c | 10 +--------- arch/x86/kernel/cpu/common.c | 7 +++++++ arch/x86/kernel/smpboot.c | 7 ------- 4 files changed, 8 insertions(+), 17 deletions(-)

diff --git a/arch/x86/include/asm/smp.h b/arch/x86/include/asm/smp.h index 461f53d27708..fe2ee61880a8 100644 --- a/arch/x86/include/asm/smp.h +++ b/arch/x86/include/asm/smp.h @@ -170,7 +170,6 @@ static inline int wbinvd_on_all_cpus(void) wbinvd(); return 0; } -#define smp_num_siblings 1 #endif /* CONFIG_SMP */

extern unsigned disabled_cpus; diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c index bb013735510a..dda741bd5789 100644 --- a/arch/x86/kernel/cpu/amd.c +++ b/arch/x86/kernel/cpu/amd.c @@ -298,7 +298,6 @@ static int nearby_node(int apicid) } #endif

-#ifdef CONFIG_SMP /* * Fix up cpu_core_id for pre-F17h systems to be in the * [0 .. cores_per_node - 1] range. Not really needed but @@ -382,7 +381,6 @@ static void amd_get_topology(struct cpuinfo_x86 *c) legacy_fixup_core_id(c); } } -#endif

/* * On a AMD dual core setup the lower bits of the APIC id distinguish the cores. @@ -390,7 +388,6 @@ static void amd_get_topology(struct cpuinfo_x86 *c) */ static void amd_detect_cmp(struct cpuinfo_x86 *c) { -#ifdef CONFIG_SMP unsigned bits; int cpu = smp_processor_id();

@@ -402,16 +399,11 @@ static void amd_detect_cmp(struct cpuinfo_x86 *c) /* use socket ID also for last level cache */ per_cpu(cpu_llc_id, cpu) = c->phys_proc_id; amd_get_topology(c); -#endif }

u16 amd_get_nb_id(int cpu) { - u16 id = 0; -#ifdef CONFIG_SMP - id = per_cpu(cpu_llc_id, cpu); -#endif - return id; + return per_cpu(cpu_llc_id, cpu); } EXPORT_SYMBOL_GPL(amd_get_nb_id);

diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c index c925498224d0..dd02ee4fa8cd 100644 --- a/arch/x86/kernel/cpu/common.c +++ b/arch/x86/kernel/cpu/common.c @@ -66,6 +66,13 @@ cpumask_var_t cpu_callin_mask; /* representing cpus for which sibling maps can be computed */ cpumask_var_t cpu_sibling_setup_mask;

+/* Number of siblings per CPU package */ +int smp_num_siblings = 1; +EXPORT_SYMBOL(smp_num_siblings); + +/* Last level cache ID of each logical CPU */ +DEFINE_PER_CPU_READ_MOSTLY(u16, cpu_llc_id) = BAD_APICID; + /* correctly size the local cpu masks */ void __init setup_cpu_local_masks(void) { diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c index 6fd12e0a07c9..5ebb0dbcf4f7 100644 --- a/arch/x86/kernel/smpboot.c +++ b/arch/x86/kernel/smpboot.c @@ -80,13 +80,6 @@ #include <asm/spec-ctrl.h> #include <asm/hw_irq.h>

-/* Number of siblings per CPU package */ -int smp_num_siblings = 1; -EXPORT_SYMBOL(smp_num_siblings); - -/* Last level cache ID of each logical CPU */ -DEFINE_PER_CPU_READ_MOSTLY(u16, cpu_llc_id) = BAD_APICID; - /* representing HT siblings of each logical CPU */ DEFINE_PER_CPU_READ_MOSTLY(cpumask_var_t, cpu_sibling_map); EXPORT_PER_CPU_SYMBOL(cpu_sibling_map);