From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751524AbdAaEOM (ORCPT ); Mon, 30 Jan 2017 23:14:12 -0500 Received: from mail-wm0-f65.google.com ([74.125.82.65]:32826 "EHLO mail-wm0-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750929AbdAaEMg (ORCPT ); Mon, 30 Jan 2017 23:12:36 -0500 From: Frederic Weisbecker To: Ingo Molnar Cc: LKML , Frederic Weisbecker , Tony Luck , Wanpeng Li , Peter Zijlstra , Michael Ellerman , Heiko Carstens , Benjamin Herrenschmidt , Thomas Gleixner , Paul Mackerras , Fenghua Yu , Rik van Riel , Martin Schwidefsky , Stanislaw Gruszka Subject: [PATCH RESEND 33/36] powerpc: Remove unused cputime definitions Date: Tue, 31 Jan 2017 04:09:48 +0100 Message-Id: <1485832191-26889-33-git-send-email-fweisbec@gmail.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1485832191-26889-1-git-send-email-fweisbec@gmail.com> References: <1485832191-26889-1-git-send-email-fweisbec@gmail.com> In-Reply-To: <1485751603-15913-1-git-send-email-fweisbec@gmail.com> References: <1485751603-15913-1-git-send-email-fweisbec@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Since the core doesn't deal with cputime_t anymore, most of these APIs have been left unused. Lets remove these. Cc: Benjamin Herrenschmidt Cc: Paul Mackerras Cc: Michael Ellerman Cc: Heiko Carstens Cc: Martin Schwidefsky Cc: Tony Luck Cc: Fenghua Yu Cc: Peter Zijlstra Cc: Rik van Riel Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Stanislaw Gruszka Cc: Wanpeng Li Signed-off-by: Frederic Weisbecker --- arch/powerpc/include/asm/cputime.h | 173 ------------------------------------- arch/powerpc/kernel/time.c | 20 +---- 2 files changed, 2 insertions(+), 191 deletions(-) diff --git a/arch/powerpc/include/asm/cputime.h b/arch/powerpc/include/asm/cputime.h index aa2e6a3..6ec0ba6 100644 --- a/arch/powerpc/include/asm/cputime.h +++ b/arch/powerpc/include/asm/cputime.h @@ -18,9 +18,6 @@ #ifndef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE #include -#ifdef __KERNEL__ -static inline void setup_cputime_one_jiffy(void) { } -#endif #else #include @@ -36,65 +33,6 @@ typedef u64 __nocast cputime64_t; #define cmpxchg_cputime(ptr, old, new) cmpxchg(ptr, old, new) #ifdef __KERNEL__ - -/* - * One jiffy in timebase units computed during initialization - */ -extern cputime_t cputime_one_jiffy; - -/* - * Convert cputime <-> jiffies - */ -extern u64 __cputime_jiffies_factor; - -static inline unsigned long cputime_to_jiffies(const cputime_t ct) -{ - return mulhdu((__force u64) ct, __cputime_jiffies_factor); -} - -static inline cputime_t jiffies_to_cputime(const unsigned long jif) -{ - u64 ct; - unsigned long sec; - - /* have to be a little careful about overflow */ - ct = jif % HZ; - sec = jif / HZ; - if (ct) { - ct *= tb_ticks_per_sec; - do_div(ct, HZ); - } - if (sec) - ct += (cputime_t) sec * tb_ticks_per_sec; - return (__force cputime_t) ct; -} - -static inline void setup_cputime_one_jiffy(void) -{ - cputime_one_jiffy = jiffies_to_cputime(1); -} - -static inline cputime64_t jiffies64_to_cputime64(const u64 jif) -{ - u64 ct; - u64 sec = jif; - - /* have to be a little careful about overflow */ - ct = do_div(sec, HZ); - if (ct) { - ct *= tb_ticks_per_sec; - do_div(ct, HZ); - } - if (sec) - ct += (u64) sec * tb_ticks_per_sec; - return (__force cputime64_t) ct; -} - -static inline u64 cputime64_to_jiffies64(const cputime_t ct) -{ - return mulhdu((__force u64) ct, __cputime_jiffies_factor); -} - /* * Convert cputime <-> microseconds */ @@ -105,117 +43,6 @@ static inline unsigned long cputime_to_usecs(const cputime_t ct) return mulhdu((__force u64) ct, __cputime_usec_factor); } -static inline cputime_t usecs_to_cputime(const unsigned long us) -{ - u64 ct; - unsigned long sec; - - /* have to be a little careful about overflow */ - ct = us % 1000000; - sec = us / 1000000; - if (ct) { - ct *= tb_ticks_per_sec; - do_div(ct, 1000000); - } - if (sec) - ct += (cputime_t) sec * tb_ticks_per_sec; - return (__force cputime_t) ct; -} - -#define usecs_to_cputime64(us) usecs_to_cputime(us) - -/* - * Convert cputime <-> seconds - */ -extern u64 __cputime_sec_factor; - -static inline unsigned long cputime_to_secs(const cputime_t ct) -{ - return mulhdu((__force u64) ct, __cputime_sec_factor); -} - -static inline cputime_t secs_to_cputime(const unsigned long sec) -{ - return (__force cputime_t)((u64) sec * tb_ticks_per_sec); -} - -/* - * Convert cputime <-> timespec - */ -static inline void cputime_to_timespec(const cputime_t ct, struct timespec *p) -{ - u64 x = (__force u64) ct; - unsigned int frac; - - frac = do_div(x, tb_ticks_per_sec); - p->tv_sec = x; - x = (u64) frac * 1000000000; - do_div(x, tb_ticks_per_sec); - p->tv_nsec = x; -} - -static inline cputime_t timespec_to_cputime(const struct timespec *p) -{ - u64 ct; - - ct = (u64) p->tv_nsec * tb_ticks_per_sec; - do_div(ct, 1000000000); - return (__force cputime_t)(ct + (u64) p->tv_sec * tb_ticks_per_sec); -} - -/* - * Convert cputime <-> timeval - */ -static inline void cputime_to_timeval(const cputime_t ct, struct timeval *p) -{ - u64 x = (__force u64) ct; - unsigned int frac; - - frac = do_div(x, tb_ticks_per_sec); - p->tv_sec = x; - x = (u64) frac * 1000000; - do_div(x, tb_ticks_per_sec); - p->tv_usec = x; -} - -static inline cputime_t timeval_to_cputime(const struct timeval *p) -{ - u64 ct; - - ct = (u64) p->tv_usec * tb_ticks_per_sec; - do_div(ct, 1000000); - return (__force cputime_t)(ct + (u64) p->tv_sec * tb_ticks_per_sec); -} - -/* - * Convert cputime <-> clock_t (units of 1/USER_HZ seconds) - */ -extern u64 __cputime_clockt_factor; - -static inline unsigned long cputime_to_clock_t(const cputime_t ct) -{ - return mulhdu((__force u64) ct, __cputime_clockt_factor); -} - -static inline cputime_t clock_t_to_cputime(const unsigned long clk) -{ - u64 ct; - unsigned long sec; - - /* have to be a little careful about overflow */ - ct = clk % USER_HZ; - sec = clk / USER_HZ; - if (ct) { - ct *= tb_ticks_per_sec; - do_div(ct, USER_HZ); - } - if (sec) - ct += (u64) sec * tb_ticks_per_sec; - return (__force cputime_t) ct; -} - -#define cputime64_to_clock_t(ct) cputime_to_clock_t((cputime_t)(ct)) - /* * PPC64 uses PACA which is task independent for storing accounting data while * PPC32 uses struct thread_info, therefore at task switch the accounting data diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c index 01f53bf..14e4855 100644 --- a/arch/powerpc/kernel/time.c +++ b/arch/powerpc/kernel/time.c @@ -152,20 +152,11 @@ EXPORT_SYMBOL_GPL(ppc_tb_freq); #ifdef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE /* - * Factors for converting from cputime_t (timebase ticks) to - * jiffies, microseconds, seconds, and clock_t (1/USER_HZ seconds). - * These are all stored as 0.64 fixed-point binary fractions. + * Factor for converting from cputime_t (timebase ticks) to + * microseconds. This is stored as 0.64 fixed-point binary fraction. */ -u64 __cputime_jiffies_factor; -EXPORT_SYMBOL(__cputime_jiffies_factor); u64 __cputime_usec_factor; EXPORT_SYMBOL(__cputime_usec_factor); -u64 __cputime_sec_factor; -EXPORT_SYMBOL(__cputime_sec_factor); -u64 __cputime_clockt_factor; -EXPORT_SYMBOL(__cputime_clockt_factor); - -cputime_t cputime_one_jiffy; #ifdef CONFIG_PPC_SPLPAR void (*dtl_consumer)(struct dtl_entry *, u64); @@ -181,14 +172,8 @@ static void calc_cputime_factors(void) { struct div_result res; - div128_by_32(HZ, 0, tb_ticks_per_sec, &res); - __cputime_jiffies_factor = res.result_low; div128_by_32(1000000, 0, tb_ticks_per_sec, &res); __cputime_usec_factor = res.result_low; - div128_by_32(1, 0, tb_ticks_per_sec, &res); - __cputime_sec_factor = res.result_low; - div128_by_32(USER_HZ, 0, tb_ticks_per_sec, &res); - __cputime_clockt_factor = res.result_low; } /* @@ -1053,7 +1038,6 @@ void __init time_init(void) tb_ticks_per_sec = ppc_tb_freq; tb_ticks_per_usec = ppc_tb_freq / 1000000; calc_cputime_factors(); - setup_cputime_one_jiffy(); /* * Compute scale factor for sched_clock. -- 2.7.4