diff options
author | Mark Brown <broonie@kernel.org> | 2015-10-12 18:09:27 +0100 |
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committer | Mark Brown <broonie@kernel.org> | 2015-10-12 18:09:27 +0100 |
commit | 79828b4fa835f73cdaf4bffa48696abdcbea9d02 (patch) | |
tree | 5e0fa7156acb75ba603022bc807df8f2fedb97a8 /arch/x86/kernel/cpu/amd.c | |
parent | 721b51fcf91898299d96f4b72cb9434cda29dce6 (diff) | |
parent | 8c1a9d6323abf0fb1e5dad96cf3f1c783505ea5a (diff) |
Merge remote-tracking branch 'asoc/fix/rt5645' into asoc-fix-rt5645
Diffstat (limited to 'arch/x86/kernel/cpu/amd.c')
-rw-r--r-- | arch/x86/kernel/cpu/amd.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c index dd3a4baffe50..4a70fc6d400a 100644 --- a/arch/x86/kernel/cpu/amd.c +++ b/arch/x86/kernel/cpu/amd.c @@ -11,6 +11,7 @@ #include <asm/cpu.h> #include <asm/smp.h> #include <asm/pci-direct.h> +#include <asm/delay.h> #ifdef CONFIG_X86_64 # include <asm/mmconfig.h> @@ -114,7 +115,7 @@ static void init_amd_k6(struct cpuinfo_x86 *c) const int K6_BUG_LOOP = 1000000; int n; void (*f_vide)(void); - unsigned long d, d2; + u64 d, d2; printk(KERN_INFO "AMD K6 stepping B detected - "); @@ -125,10 +126,10 @@ static void init_amd_k6(struct cpuinfo_x86 *c) n = K6_BUG_LOOP; f_vide = vide; - rdtscl(d); + d = rdtsc(); while (n--) f_vide(); - rdtscl(d2); + d2 = rdtsc(); d = d2-d; if (d > 20*K6_BUG_LOOP) @@ -506,6 +507,9 @@ static void bsp_init_amd(struct cpuinfo_x86 *c) /* A random value per boot for bit slice [12:upper_bit) */ va_align.bits = get_random_int() & va_align.mask; } + + if (cpu_has(c, X86_FEATURE_MWAITX)) + use_mwaitx_delay(); } static void early_init_amd(struct cpuinfo_x86 *c) |