The patch titled
Convert cpu_sibling_map to be a per cpu variable
has been removed from the -mm tree. Its filename was
convert-cpu_sibling_map-to-be-a-per-cpu-variable.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
Subject: Convert cpu_sibling_map to be a per cpu variable
From: Mike Travis <travis@xxxxxxx>
Convert cpu_sibling_map from a static array sized by NR_CPUS to a per_cpu
variable. This saves sizeof(cpumask_t) * NR unused cpus. Access is mostly
from startup and CPU HOTPLUG functions.
Signed-off-by: Mike Travis <travis@xxxxxxx>
Cc: Andi Kleen <ak@xxxxxxx>
Cc: Christoph Lameter <clameter@xxxxxxx>
Cc: "Siddha, Suresh B" <suresh.b.siddha@xxxxxxxxx>
Cc: "David S. Miller" <davem@xxxxxxxxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
Cc: "Luck, Tony" <tony.luck@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/ia64/kernel/setup.c | 12 ++++--
arch/ia64/kernel/smpboot.c | 18 +++++----
arch/powerpc/kernel/setup-common.c | 20 ++++++++--
arch/powerpc/kernel/setup_64.c | 3 +
arch/powerpc/kernel/smp.c | 4 +-
arch/powerpc/platforms/cell/cbe_cpufreq.c | 2 -
arch/sparc64/kernel/smp.c | 17 ++++----
arch/x86/kernel/cpu/cpufreq/p4-clockmod.c | 2 -
arch/x86/kernel/cpu/cpufreq/speedstep-ich.c | 2 -
arch/x86/kernel/io_apic_32.c | 4 +-
arch/x86/kernel/smpboot_32.c | 36 +++++++++---------
arch/x86/kernel/smpboot_64.c | 26 ++++++-------
arch/x86/oprofile/op_model_p4.c | 2 -
arch/x86/xen/smp.c | 4 +-
block/blktrace.c | 2 -
include/asm-ia64/smp.h | 2 -
include/asm-ia64/topology.h | 2 -
include/asm-powerpc/smp.h | 4 +-
include/asm-powerpc/topology.h | 2 -
include/asm-sparc64/smp.h | 3 +
include/asm-sparc64/topology.h | 2 -
include/asm-x86/smp_32.h | 2 -
include/asm-x86/smp_64.h | 6 ++-
include/asm-x86/topology_32.h | 2 -
include/asm-x86/topology_64.h | 2 -
kernel/sched.c | 8 ++--
26 files changed, 107 insertions(+), 82 deletions(-)
diff -puN arch/ia64/kernel/setup.c~convert-cpu_sibling_map-to-be-a-per-cpu-variable arch/ia64/kernel/setup.c
--- a/arch/ia64/kernel/setup.c~convert-cpu_sibling_map-to-be-a-per-cpu-variable
+++ a/arch/ia64/kernel/setup.c
@@ -528,10 +528,6 @@ setup_arch (char **cmdline_p)
#ifdef CONFIG_SMP
cpu_physical_id(0) = hard_smp_processor_id();
-
- cpu_set(0, cpu_sibling_map[0]);
- cpu_set(0, cpu_core_map[0]);
-
check_for_logical_procs();
if (smp_num_cpucores > 1)
printk(KERN_INFO
@@ -873,6 +869,14 @@ cpu_init (void)
void *cpu_data;
cpu_data = per_cpu_init();
+ /*
+ * insert boot cpu into sibling and core mapes
+ * (must be done after per_cpu area is setup)
+ */
+ if (smp_processor_id() == 0) {
+ cpu_set(0, per_cpu(cpu_sibling_map, 0));
+ cpu_set(0, cpu_core_map[0]);
+ }
/*
* We set ar.k3 so that assembly code in MCA handler can compute
diff -puN arch/ia64/kernel/smpboot.c~convert-cpu_sibling_map-to-be-a-per-cpu-variable arch/ia64/kernel/smpboot.c
--- a/arch/ia64/kernel/smpboot.c~convert-cpu_sibling_map-to-be-a-per-cpu-variable
+++ a/arch/ia64/kernel/smpboot.c
@@ -138,7 +138,9 @@ cpumask_t cpu_possible_map = CPU_MASK_NO
EXPORT_SYMBOL(cpu_possible_map);
cpumask_t cpu_core_map[NR_CPUS] __cacheline_aligned;
-cpumask_t cpu_sibling_map[NR_CPUS] __cacheline_aligned;
+DEFINE_PER_CPU_SHARED_ALIGNED(cpumask_t, cpu_sibling_map);
+EXPORT_PER_CPU_SYMBOL(cpu_sibling_map);
+
int smp_num_siblings = 1;
int smp_num_cpucores = 1;
@@ -650,12 +652,12 @@ clear_cpu_sibling_map(int cpu)
{
int i;
- for_each_cpu_mask(i, cpu_sibling_map[cpu])
- cpu_clear(cpu, cpu_sibling_map[i]);
+ for_each_cpu_mask(i, per_cpu(cpu_sibling_map, cpu))
+ cpu_clear(cpu, per_cpu(cpu_sibling_map, i));
for_each_cpu_mask(i, cpu_core_map[cpu])
cpu_clear(cpu, cpu_core_map[i]);
- cpu_sibling_map[cpu] = cpu_core_map[cpu] = CPU_MASK_NONE;
+ per_cpu(cpu_sibling_map, cpu) = cpu_core_map[cpu] = CPU_MASK_NONE;
}
static void
@@ -666,7 +668,7 @@ remove_siblinginfo(int cpu)
if (cpu_data(cpu)->threads_per_core == 1 &&
cpu_data(cpu)->cores_per_socket == 1) {
cpu_clear(cpu, cpu_core_map[cpu]);
- cpu_clear(cpu, cpu_sibling_map[cpu]);
+ cpu_clear(cpu, per_cpu(cpu_sibling_map, cpu));
return;
}
@@ -807,8 +809,8 @@ set_cpu_sibling_map(int cpu)
cpu_set(i, cpu_core_map[cpu]);
cpu_set(cpu, cpu_core_map[i]);
if (cpu_data(cpu)->core_id == cpu_data(i)->core_id) {
- cpu_set(i, cpu_sibling_map[cpu]);
- cpu_set(cpu, cpu_sibling_map[i]);
+ cpu_set(i, per_cpu(cpu_sibling_map, cpu));
+ cpu_set(cpu, per_cpu(cpu_sibling_map, i));
}
}
}
@@ -839,7 +841,7 @@ __cpu_up (unsigned int cpu)
if (cpu_data(cpu)->threads_per_core == 1 &&
cpu_data(cpu)->cores_per_socket == 1) {
- cpu_set(cpu, cpu_sibling_map[cpu]);
+ cpu_set(cpu, per_cpu(cpu_sibling_map, cpu));
cpu_set(cpu, cpu_core_map[cpu]);
return 0;
}
diff -puN arch/powerpc/kernel/setup-common.c~convert-cpu_sibling_map-to-be-a-per-cpu-variable arch/powerpc/kernel/setup-common.c
--- a/arch/powerpc/kernel/setup-common.c~convert-cpu_sibling_map-to-be-a-per-cpu-variable
+++ a/arch/powerpc/kernel/setup-common.c
@@ -413,16 +413,28 @@ void __init smp_setup_cpu_maps(void)
of_node_put(dn);
}
+ vdso_data->processorCount = num_present_cpus();
+#endif /* CONFIG_PPC64 */
+}
+
+/*
+ * Being that cpu_sibling_map is now a per_cpu array, then it cannot
+ * be initialized until the per_cpu areas have been created. This
+ * function is now called from setup_per_cpu_areas().
+ */
+void __init smp_setup_cpu_sibling_map(void)
+{
+#if defined(CONFIG_PPC64)
+ int cpu;
+
/*
* Do the sibling map; assume only two threads per processor.
*/
for_each_possible_cpu(cpu) {
- cpu_set(cpu, cpu_sibling_map[cpu]);
+ cpu_set(cpu, per_cpu(cpu_sibling_map, cpu));
if (cpu_has_feature(CPU_FTR_SMT))
- cpu_set(cpu ^ 0x1, cpu_sibling_map[cpu]);
+ cpu_set(cpu ^ 0x1, per_cpu(cpu_sibling_map, cpu));
}
-
- vdso_data->processorCount = num_present_cpus();
#endif /* CONFIG_PPC64 */
}
#endif /* CONFIG_SMP */
diff -puN arch/powerpc/kernel/setup_64.c~convert-cpu_sibling_map-to-be-a-per-cpu-variable arch/powerpc/kernel/setup_64.c
--- a/arch/powerpc/kernel/setup_64.c~convert-cpu_sibling_map-to-be-a-per-cpu-variable
+++ a/arch/powerpc/kernel/setup_64.c
@@ -597,6 +597,9 @@ void __init setup_per_cpu_areas(void)
paca[i].data_offset = ptr - __per_cpu_start;
memcpy(ptr, __per_cpu_start, __per_cpu_end - __per_cpu_start);
}
+
+ /* Now that per_cpu is setup, initialize cpu_sibling_map */
+ smp_setup_cpu_sibling_map();
}
#endif
diff -puN arch/powerpc/kernel/smp.c~convert-cpu_sibling_map-to-be-a-per-cpu-variable arch/powerpc/kernel/smp.c
--- a/arch/powerpc/kernel/smp.c~convert-cpu_sibling_map-to-be-a-per-cpu-variable
+++ a/arch/powerpc/kernel/smp.c
@@ -61,11 +61,11 @@ struct thread_info *secondary_ti;
cpumask_t cpu_possible_map = CPU_MASK_NONE;
cpumask_t cpu_online_map = CPU_MASK_NONE;
-cpumask_t cpu_sibling_map[NR_CPUS] = { [0 ... NR_CPUS-1] = CPU_MASK_NONE };
+DEFINE_PER_CPU(cpumask_t, cpu_sibling_map) = CPU_MASK_NONE;
EXPORT_SYMBOL(cpu_online_map);
EXPORT_SYMBOL(cpu_possible_map);
-EXPORT_SYMBOL(cpu_sibling_map);
+EXPORT_PER_CPU_SYMBOL(cpu_sibling_map);
/* SMP operations for this machine */
struct smp_ops_t *smp_ops;
diff -puN arch/powerpc/platforms/cell/cbe_cpufreq.c~convert-cpu_sibling_map-to-be-a-per-cpu-variable arch/powerpc/platforms/cell/cbe_cpufreq.c
--- a/arch/powerpc/platforms/cell/cbe_cpufreq.c~convert-cpu_sibling_map-to-be-a-per-cpu-variable
+++ a/arch/powerpc/platforms/cell/cbe_cpufreq.c
@@ -117,7 +117,7 @@ static int cbe_cpufreq_cpu_init(struct c
policy->cur = cbe_freqs[cur_pmode].frequency;
#ifdef CONFIG_SMP
- policy->cpus = cpu_sibling_map[policy->cpu];
+ policy->cpus = per_cpu(cpu_sibling_map, policy->cpu);
#endif
cpufreq_frequency_table_get_attr(cbe_freqs, policy->cpu);
diff -puN arch/sparc64/kernel/smp.c~convert-cpu_sibling_map-to-be-a-per-cpu-variable arch/sparc64/kernel/smp.c
--- a/arch/sparc64/kernel/smp.c~convert-cpu_sibling_map-to-be-a-per-cpu-variable
+++ a/arch/sparc64/kernel/smp.c
@@ -52,14 +52,13 @@ int sparc64_multi_core __read_mostly;
cpumask_t cpu_possible_map __read_mostly = CPU_MASK_NONE;
cpumask_t cpu_online_map __read_mostly = CPU_MASK_NONE;
-cpumask_t cpu_sibling_map[NR_CPUS] __read_mostly =
- { [0 ... NR_CPUS-1] = CPU_MASK_NONE };
+DEFINE_PER_CPU(cpumask_t, cpu_sibling_map) = CPU_MASK_NONE;
cpumask_t cpu_core_map[NR_CPUS] __read_mostly =
{ [0 ... NR_CPUS-1] = CPU_MASK_NONE };
EXPORT_SYMBOL(cpu_possible_map);
EXPORT_SYMBOL(cpu_online_map);
-EXPORT_SYMBOL(cpu_sibling_map);
+EXPORT_PER_CPU_SYMBOL(cpu_sibling_map);
EXPORT_SYMBOL(cpu_core_map);
static cpumask_t smp_commenced_mask;
@@ -1261,16 +1260,16 @@ void __devinit smp_fill_in_sib_core_maps
for_each_present_cpu(i) {
unsigned int j;
- cpus_clear(cpu_sibling_map[i]);
+ cpus_clear(per_cpu(cpu_sibling_map, i));
if (cpu_data(i).proc_id == -1) {
- cpu_set(i, cpu_sibling_map[i]);
+ cpu_set(i, per_cpu(cpu_sibling_map, i));
continue;
}
for_each_present_cpu(j) {
if (cpu_data(i).proc_id ==
cpu_data(j).proc_id)
- cpu_set(j, cpu_sibling_map[i]);
+ cpu_set(j, per_cpu(cpu_sibling_map, i));
}
}
}
@@ -1342,9 +1341,9 @@ int __cpu_disable(void)
cpu_clear(cpu, cpu_core_map[i]);
cpus_clear(cpu_core_map[cpu]);
- for_each_cpu_mask(i, cpu_sibling_map[cpu])
- cpu_clear(cpu, cpu_sibling_map[i]);
- cpus_clear(cpu_sibling_map[cpu]);
+ for_each_cpu_mask(i, per_cpu(cpu_sibling_map, cpu))
+ cpu_clear(cpu, per_cpu(cpu_sibling_map, i));
+ cpus_clear(per_cpu(cpu_sibling_map, cpu));
c = &cpu_data(cpu);
diff -puN arch/x86/kernel/cpu/cpufreq/p4-clockmod.c~convert-cpu_sibling_map-to-be-a-per-cpu-variable arch/x86/kernel/cpu/cpufreq/p4-clockmod.c
--- a/arch/x86/kernel/cpu/cpufreq/p4-clockmod.c~convert-cpu_sibling_map-to-be-a-per-cpu-variable
+++ a/arch/x86/kernel/cpu/cpufreq/p4-clockmod.c
@@ -200,7 +200,7 @@ static int cpufreq_p4_cpu_init(struct cp
unsigned int i;
#ifdef CONFIG_SMP
- policy->cpus = cpu_sibling_map[policy->cpu];
+ policy->cpus = per_cpu(cpu_sibling_map, policy->cpu);
#endif
/* Errata workaround */
diff -puN arch/x86/kernel/cpu/cpufreq/speedstep-ich.c~convert-cpu_sibling_map-to-be-a-per-cpu-variable arch/x86/kernel/cpu/cpufreq/speedstep-ich.c
--- a/arch/x86/kernel/cpu/cpufreq/speedstep-ich.c~convert-cpu_sibling_map-to-be-a-per-cpu-variable
+++ a/arch/x86/kernel/cpu/cpufreq/speedstep-ich.c
@@ -322,7 +322,7 @@ static int speedstep_cpu_init(struct cpu
/* only run on CPU to be set, or on its sibling */
#ifdef CONFIG_SMP
- policy->cpus = cpu_sibling_map[policy->cpu];
+ policy->cpus = per_cpu(cpu_sibling_map, policy->cpu);
#endif
cpus_allowed = current->cpus_allowed;
diff -puN arch/x86/kernel/io_apic_32.c~convert-cpu_sibling_map-to-be-a-per-cpu-variable arch/x86/kernel/io_apic_32.c
--- a/arch/x86/kernel/io_apic_32.c~convert-cpu_sibling_map-to-be-a-per-cpu-variable
+++ a/arch/x86/kernel/io_apic_32.c
@@ -378,7 +378,7 @@ static struct irq_cpu_info {
#define IRQ_ALLOWED(cpu, allowed_mask) cpu_isset(cpu, allowed_mask)
-#define CPU_TO_PACKAGEINDEX(i) (first_cpu(cpu_sibling_map[i]))
+#define CPU_TO_PACKAGEINDEX(i) (first_cpu(per_cpu(cpu_sibling_map, i)))
static cpumask_t balance_irq_affinity[NR_IRQS] = {
[0 ... NR_IRQS-1] = CPU_MASK_ALL
@@ -598,7 +598,7 @@ tryanotherirq:
* (A+B)/2 vs B
*/
load = CPU_IRQ(min_loaded) >> 1;
- for_each_cpu_mask(j, cpu_sibling_map[min_loaded]) {
+ for_each_cpu_mask(j, per_cpu(cpu_sibling_map, min_loaded)) {
if (load > CPU_IRQ(j)) {
/* This won't change cpu_sibling_map[min_loaded] */
load = CPU_IRQ(j);
diff -puN arch/x86/kernel/smpboot_32.c~convert-cpu_sibling_map-to-be-a-per-cpu-variable arch/x86/kernel/smpboot_32.c
--- a/arch/x86/kernel/smpboot_32.c~convert-cpu_sibling_map-to-be-a-per-cpu-variable
+++ a/arch/x86/kernel/smpboot_32.c
@@ -70,8 +70,8 @@ EXPORT_SYMBOL(smp_num_siblings);
int cpu_llc_id[NR_CPUS] __cpuinitdata = {[0 ... NR_CPUS-1] = BAD_APICID};
/* representing HT siblings of each logical CPU */
-cpumask_t cpu_sibling_map[NR_CPUS] __read_mostly;
-EXPORT_SYMBOL(cpu_sibling_map);
+DEFINE_PER_CPU(cpumask_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);
@@ -319,8 +319,8 @@ void __cpuinit set_cpu_sibling_map(int c
for_each_cpu_mask(i, cpu_sibling_setup_map) {
if (c[cpu].phys_proc_id == c[i].phys_proc_id &&
c[cpu].cpu_core_id == c[i].cpu_core_id) {
- cpu_set(i, cpu_sibling_map[cpu]);
- cpu_set(cpu, cpu_sibling_map[i]);
+ cpu_set(i, per_cpu(cpu_sibling_map, cpu));
+ cpu_set(cpu, per_cpu(cpu_sibling_map, i));
cpu_set(i, per_cpu(cpu_core_map, cpu));
cpu_set(cpu, per_cpu(cpu_core_map, i));
cpu_set(i, c[cpu].llc_shared_map);
@@ -328,13 +328,13 @@ void __cpuinit set_cpu_sibling_map(int c
}
}
} else {
- cpu_set(cpu, cpu_sibling_map[cpu]);
+ cpu_set(cpu, per_cpu(cpu_sibling_map, cpu));
}
cpu_set(cpu, c[cpu].llc_shared_map);
if (current_cpu_data.x86_max_cores == 1) {
- per_cpu(cpu_core_map, cpu) = cpu_sibling_map[cpu];
+ per_cpu(cpu_core_map, cpu) = per_cpu(cpu_sibling_map, cpu);
c[cpu].booted_cores = 1;
return;
}
@@ -351,12 +351,12 @@ void __cpuinit set_cpu_sibling_map(int c
/*
* Does this new cpu bringup a new core?
*/
- if (cpus_weight(cpu_sibling_map[cpu]) == 1) {
+ if (cpus_weight(per_cpu(cpu_sibling_map, cpu)) == 1) {
/*
* for each core in package, increment
* the booted_cores for this new cpu
*/
- if (first_cpu(cpu_sibling_map[i]) == i)
+ if (first_cpu(per_cpu(cpu_sibling_map, i)) == i)
c[cpu].booted_cores++;
/*
* increment the core count for all
@@ -983,7 +983,7 @@ static void __init smp_boot_cpus(unsigne
printk(KERN_NOTICE "Local APIC not detected."
" Using dummy APIC emulation.\n");
map_cpu_to_logical_apicid();
- cpu_set(0, cpu_sibling_map[0]);
+ cpu_set(0, per_cpu(cpu_sibling_map, 0));
cpu_set(0, per_cpu(cpu_core_map, 0));
return;
}
@@ -1008,7 +1008,7 @@ static void __init smp_boot_cpus(unsigne
printk(KERN_ERR "... forcing use of dummy APIC emulation. (tell your hw vendor)\n");
smpboot_clear_io_apic_irqs();
phys_cpu_present_map = physid_mask_of_physid(0);
- cpu_set(0, cpu_sibling_map[0]);
+ cpu_set(0, per_cpu(cpu_sibling_map, 0));
cpu_set(0, per_cpu(cpu_core_map, 0));
return;
}
@@ -1023,7 +1023,7 @@ static void __init smp_boot_cpus(unsigne
printk(KERN_INFO "SMP mode deactivated, forcing use of dummy APIC emulation.\n");
smpboot_clear_io_apic_irqs();
phys_cpu_present_map = physid_mask_of_physid(0);
- cpu_set(0, cpu_sibling_map[0]);
+ cpu_set(0, per_cpu(cpu_sibling_map, 0));
cpu_set(0, per_cpu(cpu_core_map, 0));
return;
}
@@ -1102,15 +1102,15 @@ static void __init smp_boot_cpus(unsigne
Dprintk("Boot done.\n");
/*
- * construct cpu_sibling_map[], so that we can tell sibling CPUs
+ * construct cpu_sibling_map, so that we can tell sibling CPUs
* efficiently.
*/
for (cpu = 0; cpu < NR_CPUS; cpu++) {
- cpus_clear(cpu_sibling_map[cpu]);
+ cpus_clear(per_cpu(cpu_sibling_map, cpu));
cpus_clear(per_cpu(cpu_core_map, cpu));
}
- cpu_set(0, cpu_sibling_map[0]);
+ cpu_set(0, per_cpu(cpu_sibling_map, 0));
cpu_set(0, per_cpu(cpu_core_map, 0));
smpboot_setup_io_apic();
@@ -1153,13 +1153,13 @@ void remove_siblinginfo(int cpu)
/*/
* last thread sibling in this cpu core going down
*/
- if (cpus_weight(cpu_sibling_map[cpu]) == 1)
+ if (cpus_weight(per_cpu(cpu_sibling_map, cpu)) == 1)
c[sibling].booted_cores--;
}
- for_each_cpu_mask(sibling, cpu_sibling_map[cpu])
- cpu_clear(cpu, cpu_sibling_map[sibling]);
- cpus_clear(cpu_sibling_map[cpu]);
+ for_each_cpu_mask(sibling, per_cpu(cpu_sibling_map, cpu))
+ cpu_clear(cpu, per_cpu(cpu_sibling_map, sibling));
+ cpus_clear(per_cpu(cpu_sibling_map, cpu));
cpus_clear(per_cpu(cpu_core_map, cpu));
c[cpu].phys_proc_id = 0;
c[cpu].cpu_core_id = 0;
diff -puN arch/x86/kernel/smpboot_64.c~convert-cpu_sibling_map-to-be-a-per-cpu-variable arch/x86/kernel/smpboot_64.c
--- a/arch/x86/kernel/smpboot_64.c~convert-cpu_sibling_map-to-be-a-per-cpu-variable
+++ a/arch/x86/kernel/smpboot_64.c
@@ -91,8 +91,8 @@ EXPORT_SYMBOL(cpu_data);
int smp_threads_ready;
/* representing HT siblings of each logical CPU */
-cpumask_t cpu_sibling_map[NR_CPUS] __read_mostly;
-EXPORT_SYMBOL(cpu_sibling_map);
+DEFINE_PER_CPU(cpumask_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);
@@ -262,8 +262,8 @@ static inline void set_cpu_sibling_map(i
for_each_cpu_mask(i, cpu_sibling_setup_map) {
if (c[cpu].phys_proc_id == c[i].phys_proc_id &&
c[cpu].cpu_core_id == c[i].cpu_core_id) {
- cpu_set(i, cpu_sibling_map[cpu]);
- cpu_set(cpu, cpu_sibling_map[i]);
+ cpu_set(i, per_cpu(cpu_sibling_map, cpu));
+ cpu_set(cpu, per_cpu(cpu_sibling_map, i));
cpu_set(i, per_cpu(cpu_core_map, cpu));
cpu_set(cpu, per_cpu(cpu_core_map, i));
cpu_set(i, c[cpu].llc_shared_map);
@@ -271,13 +271,13 @@ static inline void set_cpu_sibling_map(i
}
}
} else {
- cpu_set(cpu, cpu_sibling_map[cpu]);
+ cpu_set(cpu, per_cpu(cpu_sibling_map, cpu));
}
cpu_set(cpu, c[cpu].llc_shared_map);
if (current_cpu_data.x86_max_cores == 1) {
- per_cpu(cpu_core_map, cpu) = cpu_sibling_map[cpu];
+ per_cpu(cpu_core_map, cpu) = per_cpu(cpu_sibling_map, cpu);
c[cpu].booted_cores = 1;
return;
}
@@ -294,12 +294,12 @@ static inline void set_cpu_sibling_map(i
/*
* Does this new cpu bringup a new core?
*/
- if (cpus_weight(cpu_sibling_map[cpu]) == 1) {
+ if (cpus_weight(per_cpu(cpu_sibling_map, cpu)) == 1) {
/*
* for each core in package, increment
* the booted_cores for this new cpu
*/
- if (first_cpu(cpu_sibling_map[i]) == i)
+ if (first_cpu(per_cpu(cpu_sibling_map, i)) == i)
c[cpu].booted_cores++;
/*
* increment the core count for all
@@ -735,7 +735,7 @@ static __init void disable_smp(void)
phys_cpu_present_map = physid_mask_of_physid(boot_cpu_id);
else
phys_cpu_present_map = physid_mask_of_physid(0);
- cpu_set(0, cpu_sibling_map[0]);
+ cpu_set(0, per_cpu(cpu_sibling_map, 0));
cpu_set(0, per_cpu(cpu_core_map, 0));
}
@@ -976,13 +976,13 @@ static void remove_siblinginfo(int cpu)
/*
* last thread sibling in this cpu core going down
*/
- if (cpus_weight(cpu_sibling_map[cpu]) == 1)
+ if (cpus_weight(per_cpu(cpu_sibling_map, cpu)) == 1)
c[sibling].booted_cores--;
}
- for_each_cpu_mask(sibling, cpu_sibling_map[cpu])
- cpu_clear(cpu, cpu_sibling_map[sibling]);
- cpus_clear(cpu_sibling_map[cpu]);
+ for_each_cpu_mask(sibling, per_cpu(cpu_sibling_map, cpu))
+ cpu_clear(cpu, per_cpu(cpu_sibling_map, sibling));
+ cpus_clear(per_cpu(cpu_sibling_map, cpu));
cpus_clear(per_cpu(cpu_core_map, cpu));
c[cpu].phys_proc_id = 0;
c[cpu].cpu_core_id = 0;
diff -puN arch/x86/oprofile/op_model_p4.c~convert-cpu_sibling_map-to-be-a-per-cpu-variable arch/x86/oprofile/op_model_p4.c
--- a/arch/x86/oprofile/op_model_p4.c~convert-cpu_sibling_map-to-be-a-per-cpu-variable
+++ a/arch/x86/oprofile/op_model_p4.c
@@ -379,7 +379,7 @@ static unsigned int get_stagger(void)
{
#ifdef CONFIG_SMP
int cpu = smp_processor_id();
- return (cpu != first_cpu(cpu_sibling_map[cpu]));
+ return (cpu != first_cpu(per_cpu(cpu_sibling_map, cpu)));
#endif
return 0;
}
diff -puN arch/x86/xen/smp.c~convert-cpu_sibling_map-to-be-a-per-cpu-variable arch/x86/xen/smp.c
--- a/arch/x86/xen/smp.c~convert-cpu_sibling_map-to-be-a-per-cpu-variable
+++ a/arch/x86/xen/smp.c
@@ -147,7 +147,7 @@ void __init xen_smp_prepare_boot_cpu(voi
make_lowmem_page_readwrite(&per_cpu__gdt_page);
for (cpu = 0; cpu < NR_CPUS; cpu++) {
- cpus_clear(cpu_sibling_map[cpu]);
+ cpus_clear(per_cpu(cpu_sibling_map, cpu));
/*
* cpu_core_map lives in a per cpu area that is cleared
* when the per cpu array is allocated.
@@ -164,7 +164,7 @@ void __init xen_smp_prepare_cpus(unsigne
unsigned cpu;
for (cpu = 0; cpu < NR_CPUS; cpu++) {
- cpus_clear(cpu_sibling_map[cpu]);
+ cpus_clear(per_cpu(cpu_sibling_map, cpu));
/*
* cpu_core_ map will be zeroed when the per
* cpu area is allocated.
diff -puN block/blktrace.c~convert-cpu_sibling_map-to-be-a-per-cpu-variable block/blktrace.c
--- a/block/blktrace.c~convert-cpu_sibling_map-to-be-a-per-cpu-variable
+++ a/block/blktrace.c
@@ -550,7 +550,7 @@ static void blk_trace_set_ht_offsets(voi
for_each_online_cpu(cpu) {
unsigned long long *cpu_off, *sibling_off;
- for_each_cpu_mask(i, cpu_sibling_map[cpu]) {
+ for_each_cpu_mask(i, per_cpu(cpu_sibling_map, cpu)) {
if (i == cpu)
continue;
diff -puN include/asm-ia64/smp.h~convert-cpu_sibling_map-to-be-a-per-cpu-variable include/asm-ia64/smp.h
--- a/include/asm-ia64/smp.h~convert-cpu_sibling_map-to-be-a-per-cpu-variable
+++ a/include/asm-ia64/smp.h
@@ -58,7 +58,7 @@ extern char no_int_routing __devinitdata
extern cpumask_t cpu_online_map;
extern cpumask_t cpu_core_map[NR_CPUS];
-extern cpumask_t cpu_sibling_map[NR_CPUS];
+DECLARE_PER_CPU(cpumask_t, cpu_sibling_map);
extern int smp_num_siblings;
extern int smp_num_cpucores;
extern void __iomem *ipi_base_addr;
diff -puN include/asm-ia64/topology.h~convert-cpu_sibling_map-to-be-a-per-cpu-variable include/asm-ia64/topology.h
--- a/include/asm-ia64/topology.h~convert-cpu_sibling_map-to-be-a-per-cpu-variable
+++ a/include/asm-ia64/topology.h
@@ -112,7 +112,7 @@ void build_cpu_to_node_map(void);
#define topology_physical_package_id(cpu) (cpu_data(cpu)->socket_id)
#define topology_core_id(cpu) (cpu_data(cpu)->core_id)
#define topology_core_siblings(cpu) (cpu_core_map[cpu])
-#define topology_thread_siblings(cpu) (cpu_sibling_map[cpu])
+#define topology_thread_siblings(cpu) (per_cpu(cpu_sibling_map, cpu))
#define smt_capable() (smp_num_siblings > 1)
#endif
diff -puN include/asm-powerpc/smp.h~convert-cpu_sibling_map-to-be-a-per-cpu-variable include/asm-powerpc/smp.h
--- a/include/asm-powerpc/smp.h~convert-cpu_sibling_map-to-be-a-per-cpu-variable
+++ a/include/asm-powerpc/smp.h
@@ -26,6 +26,7 @@
#ifdef CONFIG_PPC64
#include <asm/paca.h>
#endif
+#include <asm/percpu.h>
extern int boot_cpuid;
@@ -58,7 +59,7 @@ extern int smp_hw_index[];
(smp_hw_index[(cpu)] = (phys))
#endif
-extern cpumask_t cpu_sibling_map[NR_CPUS];
+DECLARE_PER_CPU(cpumask_t, cpu_sibling_map);
/* Since OpenPIC has only 4 IPIs, we use slightly different message numbers.
*
@@ -77,6 +78,7 @@ void smp_init_pSeries(void);
void smp_init_cell(void);
void smp_init_celleb(void);
void smp_setup_cpu_maps(void);
+void smp_setup_cpu_sibling_map(void);
extern int __cpu_disable(void);
extern void __cpu_die(unsigned int cpu);
diff -puN include/asm-powerpc/topology.h~convert-cpu_sibling_map-to-be-a-per-cpu-variable include/asm-powerpc/topology.h
--- a/include/asm-powerpc/topology.h~convert-cpu_sibling_map-to-be-a-per-cpu-variable
+++ a/include/asm-powerpc/topology.h
@@ -108,7 +108,7 @@ static inline void sysfs_remove_device_f
#ifdef CONFIG_PPC64
#include <asm/smp.h>
-#define topology_thread_siblings(cpu) (cpu_sibling_map[cpu])
+#define topology_thread_siblings(cpu) (per_cpu(cpu_sibling_map, cpu))
#endif
#endif
diff -puN include/asm-sparc64/smp.h~convert-cpu_sibling_map-to-be-a-per-cpu-variable include/asm-sparc64/smp.h
--- a/include/asm-sparc64/smp.h~convert-cpu_sibling_map-to-be-a-per-cpu-variable
+++ a/include/asm-sparc64/smp.h
@@ -28,8 +28,9 @@
#include <asm/bitops.h>
#include <asm/atomic.h>
+#include <asm/percpu.h>
-extern cpumask_t cpu_sibling_map[NR_CPUS];
+DECLARE_PER_CPU(cpumask_t, cpu_sibling_map);
extern cpumask_t cpu_core_map[NR_CPUS];
extern int sparc64_multi_core;
diff -puN include/asm-sparc64/topology.h~convert-cpu_sibling_map-to-be-a-per-cpu-variable include/asm-sparc64/topology.h
--- a/include/asm-sparc64/topology.h~convert-cpu_sibling_map-to-be-a-per-cpu-variable
+++ a/include/asm-sparc64/topology.h
@@ -5,7 +5,7 @@
#define topology_physical_package_id(cpu) (cpu_data(cpu).proc_id)
#define topology_core_id(cpu) (cpu_data(cpu).core_id)
#define topology_core_siblings(cpu) (cpu_core_map[cpu])
-#define topology_thread_siblings(cpu) (cpu_sibling_map[cpu])
+#define topology_thread_siblings(cpu) (per_cpu(cpu_sibling_map, cpu))
#define mc_capable() (sparc64_multi_core)
#define smt_capable() (sparc64_multi_core)
#endif /* CONFIG_SMP */
diff -puN include/asm-x86/smp_32.h~convert-cpu_sibling_map-to-be-a-per-cpu-variable include/asm-x86/smp_32.h
--- a/include/asm-x86/smp_32.h~convert-cpu_sibling_map-to-be-a-per-cpu-variable
+++ a/include/asm-x86/smp_32.h
@@ -30,7 +30,7 @@
extern void smp_alloc_memory(void);
extern int pic_mode;
extern int smp_num_siblings;
-extern cpumask_t cpu_sibling_map[];
+DECLARE_PER_CPU(cpumask_t, cpu_sibling_map);
DECLARE_PER_CPU(cpumask_t, cpu_core_map);
extern void (*mtrr_hook) (void);
diff -puN include/asm-x86/smp_64.h~convert-cpu_sibling_map-to-be-a-per-cpu-variable include/asm-x86/smp_64.h
--- a/include/asm-x86/smp_64.h~convert-cpu_sibling_map-to-be-a-per-cpu-variable
+++ a/include/asm-x86/smp_64.h
@@ -38,12 +38,14 @@ extern void unlock_ipi_call_lock(void);
extern int smp_num_siblings;
extern void smp_send_reschedule(int cpu);
-extern cpumask_t cpu_sibling_map[NR_CPUS];
/*
- * cpu_core_map lives in a per cpu area
+ * cpu_sibling_map and cpu_core_map now live
+ * in the per cpu area
*
+ * extern cpumask_t cpu_sibling_map[NR_CPUS];
* extern cpumask_t cpu_core_map[NR_CPUS];
*/
+DECLARE_PER_CPU(cpumask_t, cpu_sibling_map);
DECLARE_PER_CPU(cpumask_t, cpu_core_map);
extern u8 cpu_llc_id[NR_CPUS];
diff -puN include/asm-x86/topology_32.h~convert-cpu_sibling_map-to-be-a-per-cpu-variable include/asm-x86/topology_32.h
--- a/include/asm-x86/topology_32.h~convert-cpu_sibling_map-to-be-a-per-cpu-variable
+++ a/include/asm-x86/topology_32.h
@@ -31,7 +31,7 @@
#define topology_physical_package_id(cpu) (cpu_data[cpu].phys_proc_id)
#define topology_core_id(cpu) (cpu_data[cpu].cpu_core_id)
#define topology_core_siblings(cpu) (per_cpu(cpu_core_map, cpu))
-#define topology_thread_siblings(cpu) (cpu_sibling_map[cpu])
+#define topology_thread_siblings(cpu) (per_cpu(cpu_sibling_map, cpu))
#endif
#ifdef CONFIG_NUMA
diff -puN include/asm-x86/topology_64.h~convert-cpu_sibling_map-to-be-a-per-cpu-variable include/asm-x86/topology_64.h
--- a/include/asm-x86/topology_64.h~convert-cpu_sibling_map-to-be-a-per-cpu-variable
+++ a/include/asm-x86/topology_64.h
@@ -59,7 +59,7 @@ extern int __node_distance(int, int);
#define topology_physical_package_id(cpu) (cpu_data[cpu].phys_proc_id)
#define topology_core_id(cpu) (cpu_data[cpu].cpu_core_id)
#define topology_core_siblings(cpu) (per_cpu(cpu_core_map, cpu))
-#define topology_thread_siblings(cpu) (cpu_sibling_map[cpu])
+#define topology_thread_siblings(cpu) (per_cpu(cpu_sibling_map, cpu))
#define mc_capable() (boot_cpu_data.x86_max_cores > 1)
#define smt_capable() (smp_num_siblings > 1)
#endif
diff -puN kernel/sched.c~convert-cpu_sibling_map-to-be-a-per-cpu-variable kernel/sched.c
--- a/kernel/sched.c~convert-cpu_sibling_map-to-be-a-per-cpu-variable
+++ a/kernel/sched.c
@@ -5869,7 +5869,7 @@ static int cpu_to_core_group(int cpu, co
struct sched_group **sg)
{
int group;
- cpumask_t mask = cpu_sibling_map[cpu];
+ cpumask_t mask = per_cpu(cpu_sibling_map, cpu);
cpus_and(mask, mask, *cpu_map);
group = first_cpu(mask);
if (sg)
@@ -5898,7 +5898,7 @@ static int cpu_to_phys_group(int cpu, co
cpus_and(mask, mask, *cpu_map);
group = first_cpu(mask);
#elif defined(CONFIG_SCHED_SMT)
- cpumask_t mask = cpu_sibling_map[cpu];
+ cpumask_t mask = per_cpu(cpu_sibling_map, cpu);
cpus_and(mask, mask, *cpu_map);
group = first_cpu(mask);
#else
@@ -6132,7 +6132,7 @@ static int build_sched_domains(const cpu
p = sd;
sd = &per_cpu(cpu_domains, i);
*sd = SD_SIBLING_INIT;
- sd->span = cpu_sibling_map[i];
+ sd->span = per_cpu(cpu_sibling_map, i);
cpus_and(sd->span, sd->span, *cpu_map);
sd->parent = p;
p->child = sd;
@@ -6143,7 +6143,7 @@ static int build_sched_domains(const cpu
#ifdef CONFIG_SCHED_SMT
/* Set up CPU (sibling) groups */
for_each_cpu_mask(i, *cpu_map) {
- cpumask_t this_sibling_map = cpu_sibling_map[i];
+ cpumask_t this_sibling_map = per_cpu(cpu_sibling_map, i);
cpus_and(this_sibling_map, this_sibling_map, *cpu_map);
if (i != first_cpu(this_sibling_map))
continue;
_
Patches currently in -mm which might be from travis@xxxxxxx are
origin.patch
x86-fix-cpu_to_node-references.patch
x86-convert-x86_cpu_to_apicid-to-be-a-per-cpu-variable.patch
x86-convert-cpu_llc_id-to-be-a-per-cpu-variable.patch
x86-acpi-use-cpu_physical_id.patch
x86-convert-cpuinfo_x86-array-to-a-per_cpu-array.patch
-
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