/* * Definitions for measuring cputime in nsecs resolution. * * Based on * * Copyright (C) 2007 FUJITSU LIMITED * Copyright (C) 2007 Hidetoshi Seto * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. * */ #ifndef _ASM_GENERIC_CPUTIME_NSECS_H #define _ASM_GENERIC_CPUTIME_NSECS_H #include typedef u64 __nocast cputime_t; typedef u64 __nocast cputime64_t; #define cmpxchg_cputime(ptr, old, new) cmpxchg64(ptr, old, new) #define cputime_one_jiffy jiffies_to_cputime(1) #define cputime_div(__ct, divisor) div_u64((__force u64)__ct, divisor) #define cputime_div_rem(__ct, divisor, remainder) \ div_u64_rem((__force u64)__ct, divisor, remainder); /* * Convert cputime <-> jiffies (HZ) */ #define cputime_to_jiffies(__ct) \ cputime_div(__ct, NSEC_PER_SEC / HZ) #define jiffies_to_cputime(__jif) \ (__force cputime_t)((__jif) * (NSEC_PER_SEC / HZ)) #define cputime64_to_jiffies64(__ct) \ cputime_div(__ct, NSEC_PER_SEC / HZ) #define jiffies64_to_cputime64(__jif) \ (__force cputime64_t)((__jif) * (NSEC_PER_SEC / HZ)) /* * Convert cputime <-> nanoseconds */ #define cputime_to_nsecs(__ct) \ (__force u64)(__ct) #define nsecs_to_cputime(__nsecs) \ (__force cputime_t)(__nsecs) #define nsecs_to_cputime64(__nsecs) \ (__force cputime64_t)(__nsecs) /* * Convert cputime <-> microseconds */ #define cputime_to_usecs(__ct) \ cputime_div(__ct, NSEC_PER_USEC) #define usecs_to_cputime(__usecs) \ (__force cputime_t)((__usecs) * NSEC_PER_USEC) #define usecs_to_cputime64(__usecs) \ (__force cputime64_t)((__usecs) * NSEC_PER_USEC) /* * Convert cputime <-> seconds */ #define cputime_to_secs(__ct) \ cputime_div(__ct, NSEC_PER_SEC) #define secs_to_cputime(__secs) \ (__force cputime_t)((__secs) * NSEC_PER_SEC) /* * Convert cputime <-> timespec (nsec) */ static inline cputime_t timespec_to_cputime(const struct timespec *val) { u64 ret = (u64)val->tv_sec * NSEC_PER_SEC + val->tv_nsec; return (__force cputime_t) ret; } static inline void cputime_to_timespec(const cputime_t ct, struct timespec *val) { u32 rem; val->tv_sec = cputime_div_rem(ct, NSEC_PER_SEC, &rem); val->tv_nsec = rem; } /* * Convert cputime <-> timeval (msec) */ static inline cputime_t timeval_to_cputime(const struct timeval *val) { u64 ret = (u64)val->tv_sec * NSEC_PER_SEC + val->tv_usec * NSEC_PER_USEC; return (__force cputime_t) ret; } static inline void cputime_to_timeval(const cputime_t ct, struct timeval *val) { u32 rem; val->tv_sec = cputime_div_rem(ct, NSEC_PER_SEC, &rem); val->tv_usec = rem / NSEC_PER_USEC; } /* * Convert cputime <-> clock (USER_HZ) */ #define cputime_to_clock_t(__ct) \ cputime_div(__ct, (NSEC_PER_SEC / USER_HZ)) #define clock_t_to_cputime(__x) \ (__force cputime_t)((__x) * (NSEC_PER_SEC / USER_HZ)) /* * Convert cputime64 to clock. */ #define cputime64_to_clock_t(__ct) \ cputime_to_clock_t((__force cputime_t)__ct) #endif =c26665ab5c49ad3e142e0f054ca3204f259ba09c'>sound/soc/codecs/adau1781-i2c.c
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authorBorislav Petkov <bp@suse.de>2017-01-20 21:29:40 +0100
committerThomas Gleixner <tglx@linutronix.de>2017-01-23 09:39:55 +0100
commitc26665ab5c49ad3e142e0f054ca3204f259ba09c (patch)
tree3bab11918e18e9d25ef7544dba05cdf39d1abec5 /sound/soc/codecs/adau1781-i2c.c
parent7a308bb3016f57e5be11a677d15b821536419d36 (diff)
x86/microcode/intel: Drop stashed AP patch pointer optimization
This was meant to save us the scanning of the microcode containter in the initrd since the first AP had already done that but it can also hurt us: Imagine a single hyperthreaded CPU (Intel(R) Atom(TM) CPU N270, for example) which updates the microcode on the BSP but since the microcode engine is shared between the two threads, the update on CPU1 doesn't happen because it has already happened on CPU0 and we don't find a newer microcode revision on CPU1. Which doesn't set the intel_ucode_patch pointer and at initrd jettisoning time we don't save the microcode patch for later application. Now, when we suspend to RAM, the loaded microcode gets cleared so we need to reload but there's no patch saved in the cache. Removing the optimization fixes this issue and all is fine and dandy. Fixes: 06b8534cb728 ("x86/microcode: Rework microcode loading") Signed-off-by: Borislav Petkov <bp@suse.de> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/20170120202955.4091-2-bp@alien8.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'sound/soc/codecs/adau1781-i2c.c')