mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-30 14:19:16 +00:00
b51ef52df7
MSR_IA32_ENERGY_PERF_BIAS is lost after suspend/resume: x86_energy_perf_policy -r before cpu0: 0x0000000000000006 cpu1: 0x0000000000000006 cpu2: 0x0000000000000006 cpu3: 0x0000000000000006 cpu4: 0x0000000000000006 cpu5: 0x0000000000000006 cpu6: 0x0000000000000006 cpu7: 0x0000000000000006 after cpu0: 0x0000000000000000 cpu1: 0x0000000000000006 cpu2: 0x0000000000000006 cpu3: 0x0000000000000006 cpu4: 0x0000000000000006 cpu5: 0x0000000000000006 cpu6: 0x0000000000000006 cpu7: 0x0000000000000006 Resulting in inconsistent energy policy settings across CPUs. This register is set via init_intel() at bootup. During resume, the secondary CPUs are brought online again and init_intel() is callled which re-initializes the register. The boot CPU however never reinitializes the register. Add a syscore callback to reinitialize the register for the boot CPU. Signed-off-by: Laura Abbott <labbott@fedoraproject.org> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Borislav Petkov <bp@alien8.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1437428878-4105-1-git-send-email-labbott@fedoraproject.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
49 lines
1.3 KiB
C
49 lines
1.3 KiB
C
#ifndef ARCH_X86_CPU_H
|
|
#define ARCH_X86_CPU_H
|
|
|
|
/* attempt to consolidate cpu attributes */
|
|
struct cpu_dev {
|
|
const char *c_vendor;
|
|
|
|
/* some have two possibilities for cpuid string */
|
|
const char *c_ident[2];
|
|
|
|
void (*c_early_init)(struct cpuinfo_x86 *);
|
|
void (*c_bsp_init)(struct cpuinfo_x86 *);
|
|
void (*c_init)(struct cpuinfo_x86 *);
|
|
void (*c_identify)(struct cpuinfo_x86 *);
|
|
void (*c_detect_tlb)(struct cpuinfo_x86 *);
|
|
void (*c_bsp_resume)(struct cpuinfo_x86 *);
|
|
int c_x86_vendor;
|
|
#ifdef CONFIG_X86_32
|
|
/* Optional vendor specific routine to obtain the cache size. */
|
|
unsigned int (*legacy_cache_size)(struct cpuinfo_x86 *,
|
|
unsigned int);
|
|
|
|
/* Family/stepping-based lookup table for model names. */
|
|
struct legacy_cpu_model_info {
|
|
int family;
|
|
const char *model_names[16];
|
|
} legacy_models[5];
|
|
#endif
|
|
};
|
|
|
|
struct _tlb_table {
|
|
unsigned char descriptor;
|
|
char tlb_type;
|
|
unsigned int entries;
|
|
/* unsigned int ways; */
|
|
char info[128];
|
|
};
|
|
|
|
#define cpu_dev_register(cpu_devX) \
|
|
static const struct cpu_dev *const __cpu_dev_##cpu_devX __used \
|
|
__attribute__((__section__(".x86_cpu_dev.init"))) = \
|
|
&cpu_devX;
|
|
|
|
extern const struct cpu_dev *const __x86_cpu_dev_start[],
|
|
*const __x86_cpu_dev_end[];
|
|
|
|
extern void get_cpu_cap(struct cpuinfo_x86 *c);
|
|
extern void cpu_detect_cache_sizes(struct cpuinfo_x86 *c);
|
|
#endif /* ARCH_X86_CPU_H */
|