The patch titled
x86_64: Cleanup non-smp usage of cpu maps
has been removed from the -mm tree. Its filename was
x86_64-cleanup-non-smp-usage-of-cpu-maps-v3.patch
This patch was dropped because it had testing failures
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: x86_64: Cleanup non-smp usage of cpu maps
From: Mike Travis <travis@xxxxxxx>
Cleanup references to the early cpu maps for the non-SMP configuration
and remove some functions called for SMP configurations only.
Based on git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git
Signed-off-by: Mike Travis <travis@xxxxxxx>
Cc: Andy Whitcroft <apw@xxxxxxxxxxxx>
Cc: Randy Dunlap <rdunlap@xxxxxxxxxxxx>
Cc: Joel Schopp <jschopp@xxxxxxxxxxxxxx>
Cc: Andi Kleen <ak@xxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Christoph Lameter <clameter@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/x86/kernel/genapic_64.c | 2 ++
arch/x86/kernel/mpparse_64.c | 2 ++
arch/x86/kernel/setup64.c | 3 +++
arch/x86/kernel/smpboot_32.c | 2 ++
arch/x86/mm/numa_64.c | 4 +++-
include/asm-x86/smp_32.h | 4 ++++
include/asm-x86/smp_64.h | 5 +++++
include/asm-x86/topology.h | 16 ++++++++++++----
8 files changed, 33 insertions(+), 5 deletions(-)
diff -puN arch/x86/kernel/genapic_64.c~x86_64-cleanup-non-smp-usage-of-cpu-maps-v3 arch/x86/kernel/genapic_64.c
--- a/arch/x86/kernel/genapic_64.c~x86_64-cleanup-non-smp-usage-of-cpu-maps-v3
+++ a/arch/x86/kernel/genapic_64.c
@@ -25,9 +25,11 @@
#endif
/* which logical CPU number maps to which CPU (physical APIC ID) */
+#ifdef CONFIG_SMP
u16 x86_cpu_to_apicid_init[NR_CPUS] __initdata
= { [0 ... NR_CPUS-1] = BAD_APICID };
void *x86_cpu_to_apicid_early_ptr;
+#endif
DEFINE_PER_CPU(u16, x86_cpu_to_apicid) = BAD_APICID;
EXPORT_PER_CPU_SYMBOL(x86_cpu_to_apicid);
diff -puN arch/x86/kernel/mpparse_64.c~x86_64-cleanup-non-smp-usage-of-cpu-maps-v3 arch/x86/kernel/mpparse_64.c
--- a/arch/x86/kernel/mpparse_64.c~x86_64-cleanup-non-smp-usage-of-cpu-maps-v3
+++ a/arch/x86/kernel/mpparse_64.c
@@ -67,9 +67,11 @@ unsigned disabled_cpus __cpuinitdata;
/* Bitmask of physically existing CPUs */
physid_mask_t phys_cpu_present_map = PHYSID_MASK_NONE;
+#ifdef CONFIG_SMP
u16 x86_bios_cpu_apicid_init[NR_CPUS] __initdata
= { [0 ... NR_CPUS-1] = BAD_APICID };
void *x86_bios_cpu_apicid_early_ptr;
+#endif
DEFINE_PER_CPU(u16, x86_bios_cpu_apicid) = BAD_APICID;
EXPORT_PER_CPU_SYMBOL(x86_bios_cpu_apicid);
diff -puN arch/x86/kernel/setup64.c~x86_64-cleanup-non-smp-usage-of-cpu-maps-v3 arch/x86/kernel/setup64.c
--- a/arch/x86/kernel/setup64.c~x86_64-cleanup-non-smp-usage-of-cpu-maps-v3
+++ a/arch/x86/kernel/setup64.c
@@ -89,6 +89,8 @@ static int __init nonx32_setup(char *str
}
__setup("noexec32=", nonx32_setup);
+
+#ifdef CONFIG_SMP
/*
* Copy data used in early init routines from the initial arrays to the
* per cpu data areas. These arrays then become expendable and the
@@ -175,6 +177,7 @@ void __init setup_per_cpu_areas(void)
/* Fix up pda for this processor .... */
pda_init(0);
}
+#endif /* CONFIG_SMP */
void pda_init(int cpu)
{
diff -puN arch/x86/kernel/smpboot_32.c~x86_64-cleanup-non-smp-usage-of-cpu-maps-v3 arch/x86/kernel/smpboot_32.c
--- a/arch/x86/kernel/smpboot_32.c~x86_64-cleanup-non-smp-usage-of-cpu-maps-v3
+++ a/arch/x86/kernel/smpboot_32.c
@@ -92,9 +92,11 @@ DEFINE_PER_CPU_SHARED_ALIGNED(struct cpu
EXPORT_PER_CPU_SYMBOL(cpu_info);
/* which logical CPU number maps to which CPU (physical APIC ID) */
+#ifdef CONFIG_SMP
u8 x86_cpu_to_apicid_init[NR_CPUS] __initdata =
{ [0 ... NR_CPUS-1] = BAD_APICID };
void *x86_cpu_to_apicid_early_ptr;
+#endif
DEFINE_PER_CPU(u8, x86_cpu_to_apicid) = BAD_APICID;
EXPORT_PER_CPU_SYMBOL(x86_cpu_to_apicid);
diff -puN arch/x86/mm/numa_64.c~x86_64-cleanup-non-smp-usage-of-cpu-maps-v3 arch/x86/mm/numa_64.c
--- a/arch/x86/mm/numa_64.c~x86_64-cleanup-non-smp-usage-of-cpu-maps-v3
+++ a/arch/x86/mm/numa_64.c
@@ -31,13 +31,15 @@ bootmem_data_t plat_node_bdata[MAX_NUMNO
struct memnode memnode;
+#ifdef CONFIG_SMP
int x86_cpu_to_node_map_init[NR_CPUS] = {
[0 ... NR_CPUS-1] = NUMA_NO_NODE
};
void *x86_cpu_to_node_map_early_ptr;
+EXPORT_SYMBOL(x86_cpu_to_node_map_early_ptr);
+#endif
DEFINE_PER_CPU(int, x86_cpu_to_node_map) = NUMA_NO_NODE;
EXPORT_PER_CPU_SYMBOL(x86_cpu_to_node_map);
-EXPORT_SYMBOL(x86_cpu_to_node_map_early_ptr);
s16 apicid_to_node[MAX_LOCAL_APIC] __cpuinitdata = {
[0 ... MAX_LOCAL_APIC-1] = NUMA_NO_NODE
diff -puN include/asm-x86/smp_32.h~x86_64-cleanup-non-smp-usage-of-cpu-maps-v3 include/asm-x86/smp_32.h
--- a/include/asm-x86/smp_32.h~x86_64-cleanup-non-smp-usage-of-cpu-maps-v3
+++ a/include/asm-x86/smp_32.h
@@ -29,8 +29,12 @@ extern void unlock_ipi_call_lock(void);
extern void (*mtrr_hook) (void);
extern void zap_low_mappings (void);
+#ifdef CONFIG_SMP
extern u8 __initdata x86_cpu_to_apicid_init[];
extern void *x86_cpu_to_apicid_early_ptr;
+#else
+#define x86_cpu_to_apicid_early_ptr NULL
+#endif
DECLARE_PER_CPU(cpumask_t, cpu_sibling_map);
DECLARE_PER_CPU(cpumask_t, cpu_core_map);
diff -puN include/asm-x86/smp_64.h~x86_64-cleanup-non-smp-usage-of-cpu-maps-v3 include/asm-x86/smp_64.h
--- a/include/asm-x86/smp_64.h~x86_64-cleanup-non-smp-usage-of-cpu-maps-v3
+++ a/include/asm-x86/smp_64.h
@@ -26,10 +26,15 @@ extern void unlock_ipi_call_lock(void);
extern int smp_call_function_mask(cpumask_t mask, void (*func)(void *),
void *info, int wait);
+#ifdef CONFIG_SMP
extern u16 __initdata x86_cpu_to_apicid_init[];
extern u16 __initdata x86_bios_cpu_apicid_init[];
extern void *x86_cpu_to_apicid_early_ptr;
extern void *x86_bios_cpu_apicid_early_ptr;
+#else
+#define x86_cpu_to_apicid_early_ptr NULL
+#define x86_bios_cpu_apicid_early_ptr NULL
+#endif
DECLARE_PER_CPU(cpumask_t, cpu_sibling_map);
DECLARE_PER_CPU(cpumask_t, cpu_core_map);
diff -puN include/asm-x86/topology.h~x86_64-cleanup-non-smp-usage-of-cpu-maps-v3 include/asm-x86/topology.h
--- a/include/asm-x86/topology.h~x86_64-cleanup-non-smp-usage-of-cpu-maps-v3
+++ a/include/asm-x86/topology.h
@@ -35,8 +35,14 @@ extern int cpu_to_node_map[];
#else
DECLARE_PER_CPU(int, x86_cpu_to_node_map);
+
+#ifdef CONFIG_SMP
extern int x86_cpu_to_node_map_init[];
extern void *x86_cpu_to_node_map_early_ptr;
+#else
+#define x86_cpu_to_node_map_early_ptr NULL
+#endif
+
/* Returns the number of the current Node. */
#define numa_node_id() (early_cpu_to_node(raw_smp_processor_id()))
#endif
@@ -54,6 +60,8 @@ static inline int cpu_to_node(int cpu)
}
#else /* CONFIG_X86_64 */
+
+#ifdef CONFIG_SMP
static inline int early_cpu_to_node(int cpu)
{
int *cpu_to_node_map = x86_cpu_to_node_map_early_ptr;
@@ -65,6 +73,9 @@ static inline int early_cpu_to_node(int
else
return NUMA_NO_NODE;
}
+#else
+#define early_cpu_to_node(cpu) cpu_to_node(cpu)
+#endif
static inline int cpu_to_node(int cpu)
{
@@ -76,10 +87,7 @@ static inline int cpu_to_node(int cpu)
return ((int *)x86_cpu_to_node_map_early_ptr)[cpu];
}
#endif
- if (per_cpu_offset(cpu))
- return per_cpu(x86_cpu_to_node_map, cpu);
- else
- return NUMA_NO_NODE;
+ return per_cpu(x86_cpu_to_node_map, cpu);
}
#endif /* CONFIG_X86_64 */
_
Patches currently in -mm which might be from travis@xxxxxxx are
cpufreq-change-cpu-freq-tables-to-per_cpu-variables.patch
oprofile-change-cpu_buffer-from-array-to-per_cpu-variable.patch
oprofile-change-cpu_buffer-from-array-to-per_cpu-variable-checkpatch-fixes.patch
x86_64-cleanup-non-smp-usage-of-cpu-maps-v3.patch
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