diff options
Diffstat (limited to 'arch/mips/include/asm/vdso/gettimeofday.h')
| -rw-r--r-- | arch/mips/include/asm/vdso/gettimeofday.h | 39 |
1 files changed, 16 insertions, 23 deletions
diff --git a/arch/mips/include/asm/vdso/gettimeofday.h b/arch/mips/include/asm/vdso/gettimeofday.h index a58687e26c5d..c63ddcaea54c 100644 --- a/arch/mips/include/asm/vdso/gettimeofday.h +++ b/arch/mips/include/asm/vdso/gettimeofday.h @@ -13,19 +13,13 @@ #ifndef __ASSEMBLY__ -#include <linux/compiler.h> -#include <linux/time.h> - #include <asm/vdso/vdso.h> #include <asm/clocksource.h> -#include <asm/io.h> #include <asm/unistd.h> #include <asm/vdso.h> #define VDSO_HAS_CLOCK_GETRES 1 -#define __VDSO_USE_SYSCALL ULLONG_MAX - static __always_inline long gettimeofday_fallback( struct __kernel_old_timeval *_tv, struct timezone *_tz) @@ -175,29 +169,28 @@ static __always_inline u64 read_gic_count(const struct vdso_data *data) static __always_inline u64 __arch_get_hw_counter(s32 clock_mode) { -#ifdef CONFIG_CLKSRC_MIPS_GIC - const struct vdso_data *data = get_vdso_data(); -#endif - u64 cycle_now; - - switch (clock_mode) { #ifdef CONFIG_CSRC_R4K - case VDSO_CLOCK_R4K: - cycle_now = read_r4k_count(); - break; + if (clock_mode == VDSO_CLOCKMODE_R4K) + return read_r4k_count(); #endif #ifdef CONFIG_CLKSRC_MIPS_GIC - case VDSO_CLOCK_GIC: - cycle_now = read_gic_count(data); - break; + if (clock_mode == VDSO_CLOCKMODE_GIC) + return read_gic_count(get_vdso_data()); #endif - default: - cycle_now = __VDSO_USE_SYSCALL; - break; - } + /* + * Core checks mode already. So this raced against a concurrent + * update. Return something. Core will do another round see the + * change and fallback to syscall. + */ + return 0; +} - return cycle_now; +static inline bool mips_vdso_hres_capable(void) +{ + return IS_ENABLED(CONFIG_CSRC_R4K) || + IS_ENABLED(CONFIG_CLKSRC_MIPS_GIC); } +#define __arch_vdso_hres_capable mips_vdso_hres_capable static __always_inline const struct vdso_data *__arch_get_vdso_data(void) { |