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[PATCH] i386: move phys_proc_id and cpu_core_id to cpuinfo_x86 

Move the phys_core_id and cpu_core_id to cpuinfo_x86 structure.  Similar
patch for x86_64 is already accepted by Andi earlier this week.

[akpm@osdl.org: fix warning]
Signed-off-by: Rohit Seth <rohitseth@google.com>
Cc: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Rohit Seth 2006-06-27 02:53:46 -07:00 committed by Linus Torvalds
parent 7f35bf929f
commit 4b89aff930
6 changed files with 24 additions and 31 deletions
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6
arch/i386/kernel/cpu/amd.c
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@ -235,10 +235,10 @@ static void __init init_amd(struct cpuinfo_x86 *c)
while ((1 << bits) < c->x86_max_cores)
bits++;
}
cpu_core_id[cpu] = phys_proc_id[cpu] & ((1<<bits)-1);
phys_proc_id[cpu] >>= bits;
c->cpu_core_id = c->phys_proc_id & ((1<<bits)-1);
c->phys_proc_id >>= bits;
printk(KERN_INFO "CPU %d(%d) -> Core %d\n",
cpu, c->x86_max_cores, cpu_core_id[cpu]);
cpu, c->x86_max_cores, c->cpu_core_id);
}
#endif

15
arch/i386/kernel/cpu/common.c
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@ -319,7 +319,7 @@ void __cpuinit generic_identify(struct cpuinfo_x86 * c)
early_intel_workaround(c);
#ifdef CONFIG_X86_HT
phys_proc_id[smp_processor_id()] = (cpuid_ebx(1) >> 24) & 0xff;
c->phys_proc_id = (cpuid_ebx(1) >> 24) & 0xff;
#endif
}
@ -477,11 +477,9 @@ void __cpuinit detect_ht(struct cpuinfo_x86 *c)
{
u32 eax, ebx, ecx, edx;
int index_msb, core_bits;
int cpu = smp_processor_id();
cpuid(1, &eax, &ebx, &ecx, &edx);
if (!cpu_has(c, X86_FEATURE_HT) || cpu_has(c, X86_FEATURE_CMP_LEGACY))
return;
@ -492,16 +490,17 @@ void __cpuinit detect_ht(struct cpuinfo_x86 *c)
} else if (smp_num_siblings > 1 ) {
if (smp_num_siblings > NR_CPUS) {
printk(KERN_WARNING "CPU: Unsupported number of the siblings %d", smp_num_siblings);
printk(KERN_WARNING "CPU: Unsupported number of the "
"siblings %d", smp_num_siblings);
smp_num_siblings = 1;
return;
}
index_msb = get_count_order(smp_num_siblings);
phys_proc_id[cpu] = phys_pkg_id((ebx >> 24) & 0xFF, index_msb);
c->phys_proc_id = phys_pkg_id((ebx >> 24) & 0xFF, index_msb);
printk(KERN_INFO "CPU: Physical Processor ID: %d\n",
phys_proc_id[cpu]);
c->phys_proc_id);
smp_num_siblings = smp_num_siblings / c->x86_max_cores;
@ -509,12 +508,12 @@ void __cpuinit detect_ht(struct cpuinfo_x86 *c)
core_bits = get_count_order(c->x86_max_cores);
cpu_core_id[cpu] = phys_pkg_id((ebx >> 24) & 0xFF, index_msb) &
c->cpu_core_id = phys_pkg_id((ebx >> 24) & 0xFF, index_msb) &
((1 << core_bits) - 1);
if (c->x86_max_cores > 1)
printk(KERN_INFO "CPU: Processor Core ID: %d\n",
cpu_core_id[cpu]);
c->cpu_core_id);
}
}
#endif

4
arch/i386/kernel/cpu/proc.c
View File

@ -109,9 +109,9 @@ static int show_cpuinfo(struct seq_file *m, void *v)
seq_printf(m, "cache size\t: %d KB\n", c->x86_cache_size);
#ifdef CONFIG_X86_HT
if (c->x86_max_cores * smp_num_siblings > 1) {
seq_printf(m, "physical id\t: %d\n", phys_proc_id[n]);
seq_printf(m, "physical id\t: %d\n", c->phys_proc_id);
seq_printf(m, "siblings\t: %d\n", cpus_weight(cpu_core_map[n]));
seq_printf(m, "core id\t\t: %d\n", cpu_core_id[n]);
seq_printf(m, "core id\t\t: %d\n", c->cpu_core_id);
seq_printf(m, "cpu cores\t: %d\n", c->booted_cores);
}
#endif

16
arch/i386/kernel/smpboot.c
View File

@ -67,12 +67,6 @@ int smp_num_siblings = 1;
EXPORT_SYMBOL(smp_num_siblings);
#endif
/* Package ID of each logical CPU */
int phys_proc_id[NR_CPUS] __read_mostly = {[0 ... NR_CPUS-1] = BAD_APICID};
/* Core ID of each logical CPU */
int cpu_core_id[NR_CPUS] __read_mostly = {[0 ... NR_CPUS-1] = BAD_APICID};
/* Last level cache ID of each logical CPU */
int cpu_llc_id[NR_CPUS] __cpuinitdata = {[0 ... NR_CPUS-1] = BAD_APICID};
@ -473,8 +467,8 @@ set_cpu_sibling_map(int cpu)
if (smp_num_siblings > 1) {
for_each_cpu_mask(i, cpu_sibling_setup_map) {
if (phys_proc_id[cpu] == phys_proc_id[i] &&
cpu_core_id[cpu] == cpu_core_id[i]) {
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, cpu_core_map[cpu]);
@ -501,7 +495,7 @@ set_cpu_sibling_map(int cpu)
cpu_set(i, c[cpu].llc_shared_map);
cpu_set(cpu, c[i].llc_shared_map);
}
if (phys_proc_id[cpu] == phys_proc_id[i]) {
if (c[cpu].phys_proc_id == c[i].phys_proc_id) {
cpu_set(i, cpu_core_map[cpu]);
cpu_set(cpu, cpu_core_map[i]);
/*
@ -1353,8 +1347,8 @@ remove_siblinginfo(int cpu)
cpu_clear(cpu, cpu_sibling_map[sibling]);
cpus_clear(cpu_sibling_map[cpu]);
cpus_clear(cpu_core_map[cpu]);
phys_proc_id[cpu] = BAD_APICID;
cpu_core_id[cpu] = BAD_APICID;
c[cpu].phys_proc_id = 0;
c[cpu].cpu_core_id = 0;
cpu_clear(cpu, cpu_sibling_setup_map);
}

8
include/asm-i386/processor.h
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@ -71,8 +71,12 @@ struct cpuinfo_x86 {
cpumask_t llc_shared_map; /* cpus sharing the last level cache */
#endif
unsigned char x86_max_cores; /* cpuid returned max cores value */
unsigned char booted_cores; /* number of cores as seen by OS */
unsigned char apicid;
#ifdef CONFIG_SMP
unsigned char booted_cores; /* number of cores as seen by OS */
__u8 phys_proc_id; /* Physical processor id. */
__u8 cpu_core_id; /* Core id */
#endif
} __attribute__((__aligned__(SMP_CACHE_BYTES)));
#define X86_VENDOR_INTEL 0
@ -104,8 +108,6 @@ extern struct cpuinfo_x86 cpu_data[];
#define current_cpu_data boot_cpu_data
#endif
extern int phys_proc_id[NR_CPUS];
extern int cpu_core_id[NR_CPUS];
extern int cpu_llc_id[NR_CPUS];
extern char ignore_fpu_irq;

6
include/asm-i386/topology.h
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@ -28,10 +28,8 @@
#define _ASM_I386_TOPOLOGY_H
#ifdef CONFIG_X86_HT
#define topology_physical_package_id(cpu) \
(phys_proc_id[cpu] == BAD_APICID ? -1 : phys_proc_id[cpu])
#define topology_core_id(cpu) \
(cpu_core_id[cpu] == BAD_APICID ? 0 : cpu_core_id[cpu])
#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) (cpu_core_map[cpu])
#define topology_thread_siblings(cpu) (cpu_sibling_map[cpu])
#endif