diff options
| author | Andi Kleen <ak@suse.de> | 2006-12-07 02:14:05 +0100 |
|---|---|---|
| committer | Andi Kleen <andi@basil.nowhere.org> | 2006-12-07 02:14:05 +0100 |
| commit | 770d132f03ac15b12919f1bac481f4beda13e094 (patch) | |
| tree | fdf8470cd380f2db1960102c928806f687f72938 | |
| parent | ea7322decb974a4a3e804f96a0201e893ff88ce3 (diff) | |
[PATCH] i386: Retrieve CLFLUSH size from CPUID
Also report it in /proc/cpuinfo similar to x86-64.
Needed for followon patch
Signed-off-by: Andi Kleen <ak@suse.de>
| -rw-r--r-- | arch/i386/kernel/cpu/common.c | 3 | ||||
| -rw-r--r-- | arch/i386/kernel/cpu/proc.c | 3 | ||||
| -rw-r--r-- | include/asm-i386/processor.h | 1 |
3 files changed, 6 insertions, 1 deletions
diff --git a/arch/i386/kernel/cpu/common.c b/arch/i386/kernel/cpu/common.c index 6958ae5e2fa5..cda41aef79ad 100644 --- a/arch/i386/kernel/cpu/common.c +++ b/arch/i386/kernel/cpu/common.c @@ -309,6 +309,8 @@ static void __cpuinit generic_identify(struct cpuinfo_x86 * c) #else c->apicid = (ebx >> 24) & 0xFF; #endif + if (c->x86_capability[0] & (1<<19)) + c->x86_clflush_size = ((ebx >> 8) & 0xff) * 8; } else { /* Have CPUID level 0 only - unheard of */ c->x86 = 4; @@ -373,6 +375,7 @@ void __cpuinit identify_cpu(struct cpuinfo_x86 *c) c->x86_vendor_id[0] = '\0'; /* Unset */ c->x86_model_id[0] = '\0'; /* Unset */ c->x86_max_cores = 1; + c->x86_clflush_size = 32; memset(&c->x86_capability, 0, sizeof c->x86_capability); if (!have_cpuid_p()) { diff --git a/arch/i386/kernel/cpu/proc.c b/arch/i386/kernel/cpu/proc.c index 76aac088a323..6624d8583c42 100644 --- a/arch/i386/kernel/cpu/proc.c +++ b/arch/i386/kernel/cpu/proc.c @@ -152,9 +152,10 @@ static int show_cpuinfo(struct seq_file *m, void *v) seq_printf(m, " [%d]", i); } - seq_printf(m, "\nbogomips\t: %lu.%02lu\n\n", + seq_printf(m, "\nbogomips\t: %lu.%02lu\n", c->loops_per_jiffy/(500000/HZ), (c->loops_per_jiffy/(5000/HZ)) % 100); + seq_printf(m, "clflush size\t: %u\n\n", c->x86_clflush_size); return 0; } diff --git a/include/asm-i386/processor.h b/include/asm-i386/processor.h index f73cf836e649..98fa73b71760 100644 --- a/include/asm-i386/processor.h +++ b/include/asm-i386/processor.h @@ -72,6 +72,7 @@ struct cpuinfo_x86 { #endif unsigned char x86_max_cores; /* cpuid returned max cores value */ unsigned char apicid; + unsigned short x86_clflush_size; #ifdef CONFIG_SMP unsigned char booted_cores; /* number of cores as seen by OS */ __u8 phys_proc_id; /* Physical processor id. */ |