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Thu, 22 Jul 2021 08:31:11 -0700 (PDT) From: Carlos Bilbao To: Thomas Gleixner Cc: Arnd Bergmann , Linux Kernel Mailing List , Linus Walleij , Geert Uytterhoeven , jianyong.wu@arm.com, Matthew Wilcox , catalin.marinas@arm.com, linux-arm-kernel@lists.infradead.org, akpm@linux-foundation.org Subject: [PATCH v3] include: linux: Reorganize timekeeping and ktime headers Date: Thu, 22 Jul 2021 11:31:09 -0400 Message-ID: <2204751.ElGaqSPkdT@iron-maiden> Organization: Virginia Tech In-Reply-To: <5481133.DvuYhMxLoT@iron-maiden> References: <5729424.lOV4Wx5bFT@iron-maiden> <87fsw7pe5d.ffs@nanos.tec.linutronix.de> <5481133.DvuYhMxLoT@iron-maiden> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210722_083116_721205_8615670B X-CRM114-Status: GOOD ( 21.52 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Reorganize and separate the headers by making ktime.h take care of the ktime_get() family of functions, and reserve timekeeping.h for the actual timekeeping. This also helps to avoid implicit function errors and strengthens the header dependencies, since timekeeping.h was using ktime_to_ns(), a static function defined in a header it does no include, ktime.h. Include the header timekeeping.h wherever it is necessary for a successful compilation after the header code reorganization. Signed-off-by: Carlos Bilbao --- Changelog: - v2: Add three more files that also needed a header update for x86: pps_kernel.h, posix-timers.c and hda_controller.c - v3: Cover build tests for other architectures than x86. To compile arm64, update arch/arm64/kvm/hypercalls.c, include/linux/stmmac.h, and drivers/rtc/class.c. No other arch/ seems to need fixes but to be on the safe side compiled arm, mips, powerpc, sparc, s390, riscv and i386. --- arch/arm64/kvm/hypercalls.c | 1 + arch/x86/kernel/tsc.c | 1 + drivers/rtc/class.c | 1 + include/linux/ktime.h | 196 +++++++++++++++++++++++++++++++- include/linux/pps_kernel.h | 1 + include/linux/sched_clock.h | 2 + include/linux/stmmac.h | 1 + include/linux/timekeeping.h | 197 +-------------------------------- init/main.c | 1 + kernel/time/ntp.c | 1 + kernel/time/posix-timers.c | 1 + kernel/time/time.c | 1 + kernel/time/timekeeping.c | 1 + sound/pci/hda/hda_controller.c | 1 + 14 files changed, 208 insertions(+), 198 deletions(-) diff --git a/arch/arm64/kvm/hypercalls.c b/arch/arm64/kvm/hypercalls.c index 30da78f72b3b..41499c1d7379 100644 --- a/arch/arm64/kvm/hypercalls.c +++ b/arch/arm64/kvm/hypercalls.c @@ -3,6 +3,7 @@ #include #include +#include #include diff --git a/arch/x86/kernel/tsc.c b/arch/x86/kernel/tsc.c index 57ec01192180..86f663d0d6ac 100644 --- a/arch/x86/kernel/tsc.c +++ b/arch/x86/kernel/tsc.c @@ -15,6 +15,7 @@ #include #include #include +#include #include #include diff --git a/drivers/rtc/class.c b/drivers/rtc/class.c index f77bc089eb6b..1bdf1f790beb 100644 --- a/drivers/rtc/class.c +++ b/drivers/rtc/class.c @@ -16,6 +16,7 @@ #include #include #include +#include #include #include "rtc-core.h" diff --git a/include/linux/ktime.h b/include/linux/ktime.h index 73f20deb497d..37955d6664dd 100644 --- a/include/linux/ktime.h +++ b/include/linux/ktime.h @@ -229,6 +229,198 @@ static inline ktime_t ms_to_ktime(u64 ms) return ms * NSEC_PER_MSEC; } -# include +/* + * ktime_get() family: read the current time in a multitude of ways, + * + * The default time reference is CLOCK_MONOTONIC, starting at + * boot time but not counting the time spent in suspend. + * For other references, use the functions with "real", "clocktai", + * "boottime" and "raw" suffixes. + * + * To get the time in a different format, use the ones wit + * "ns", "ts64" and "seconds" suffix. + * + * See Documentation/core-api/timekeeping.rst for more details. + */ -#endif + +/* + * timespec64 based interfaces + */ +extern void ktime_get_raw_ts64(struct timespec64 *ts); +extern void ktime_get_ts64(struct timespec64 *ts); +extern void ktime_get_real_ts64(struct timespec64 *tv); +extern void ktime_get_coarse_ts64(struct timespec64 *ts); +extern void ktime_get_coarse_real_ts64(struct timespec64 *ts); + +void getboottime64(struct timespec64 *ts); + +/* + * time64_t base interfaces + */ +extern time64_t ktime_get_seconds(void); +extern time64_t __ktime_get_real_seconds(void); +extern time64_t ktime_get_real_seconds(void); + +/* + * ktime_t based interfaces + */ + +enum tk_offsets { + TK_OFFS_REAL, + TK_OFFS_BOOT, + TK_OFFS_TAI, + TK_OFFS_MAX, +}; + +extern ktime_t ktime_get(void); +extern ktime_t ktime_get_with_offset(enum tk_offsets offs); +extern ktime_t ktime_get_coarse_with_offset(enum tk_offsets offs); +extern ktime_t ktime_mono_to_any(ktime_t tmono, enum tk_offsets offs); +extern ktime_t ktime_get_raw(void); +extern u32 ktime_get_resolution_ns(void); + +/** + * ktime_get_real - get the real (wall-) time in ktime_t format + */ +static inline ktime_t ktime_get_real(void) +{ + return ktime_get_with_offset(TK_OFFS_REAL); +} + +static inline ktime_t ktime_get_coarse_real(void) +{ + return ktime_get_coarse_with_offset(TK_OFFS_REAL); +} + +/** + * ktime_get_boottime - Returns monotonic time since boot in ktime_t format + * + * This is similar to CLOCK_MONTONIC/ktime_get, but also includes the + * time spent in suspend. + */ +static inline ktime_t ktime_get_boottime(void) +{ + return ktime_get_with_offset(TK_OFFS_BOOT); +} + +static inline ktime_t ktime_get_coarse_boottime(void) +{ + return ktime_get_coarse_with_offset(TK_OFFS_BOOT); +} + +/** + * ktime_get_clocktai - Returns the TAI time of day in ktime_t format + */ +static inline ktime_t ktime_get_clocktai(void) +{ + return ktime_get_with_offset(TK_OFFS_TAI); +} + +static inline ktime_t ktime_get_coarse_clocktai(void) +{ + return ktime_get_coarse_with_offset(TK_OFFS_TAI); +} + +static inline ktime_t ktime_get_coarse(void) +{ + struct timespec64 ts; + + ktime_get_coarse_ts64(&ts); + return timespec64_to_ktime(ts); +} + +static inline u64 ktime_get_coarse_ns(void) +{ + return ktime_to_ns(ktime_get_coarse()); +} + +static inline u64 ktime_get_coarse_real_ns(void) +{ + return ktime_to_ns(ktime_get_coarse_real()); +} + +static inline u64 ktime_get_coarse_boottime_ns(void) +{ + return ktime_to_ns(ktime_get_coarse_boottime()); +} + +static inline u64 ktime_get_coarse_clocktai_ns(void) +{ + return ktime_to_ns(ktime_get_coarse_clocktai()); +} + +/** + * ktime_mono_to_real - Convert monotonic time to clock realtime + */ +static inline ktime_t ktime_mono_to_real(ktime_t mono) +{ + return ktime_mono_to_any(mono, TK_OFFS_REAL); +} + +static inline u64 ktime_get_ns(void) +{ + return ktime_to_ns(ktime_get()); +} + +static inline u64 ktime_get_real_ns(void) +{ + return ktime_to_ns(ktime_get_real()); +} + +static inline u64 ktime_get_boottime_ns(void) +{ + return ktime_to_ns(ktime_get_boottime()); +} + +static inline u64 ktime_get_clocktai_ns(void) +{ + return ktime_to_ns(ktime_get_clocktai()); +} + +static inline u64 ktime_get_raw_ns(void) +{ + return ktime_to_ns(ktime_get_raw()); +} + +extern u64 ktime_get_mono_fast_ns(void); +extern u64 ktime_get_raw_fast_ns(void); +extern u64 ktime_get_boot_fast_ns(void); +extern u64 ktime_get_real_fast_ns(void); + +/* + * timespec64/time64_t interfaces utilizing the ktime based ones + * for API completeness, these could be implemented more efficiently + * if needed. + */ +static inline void ktime_get_boottime_ts64(struct timespec64 *ts) +{ + *ts = ktime_to_timespec64(ktime_get_boottime()); +} + +static inline void ktime_get_coarse_boottime_ts64(struct timespec64 *ts) +{ + *ts = ktime_to_timespec64(ktime_get_coarse_boottime()); +} + +static inline time64_t ktime_get_boottime_seconds(void) +{ + return ktime_divns(ktime_get_coarse_boottime(), NSEC_PER_SEC); +} + +static inline void ktime_get_clocktai_ts64(struct timespec64 *ts) +{ + *ts = ktime_to_timespec64(ktime_get_clocktai()); +} + +static inline void ktime_get_coarse_clocktai_ts64(struct timespec64 *ts) +{ + *ts = ktime_to_timespec64(ktime_get_coarse_clocktai()); +} + +static inline time64_t ktime_get_clocktai_seconds(void) +{ + return ktime_divns(ktime_get_coarse_clocktai(), NSEC_PER_SEC); +} + +#endif /* _LINUX_KTIME_H */ diff --git a/include/linux/pps_kernel.h b/include/linux/pps_kernel.h index 78c8ac4951b5..24970c202ac6 100644 --- a/include/linux/pps_kernel.h +++ b/include/linux/pps_kernel.h @@ -12,6 +12,7 @@ #include #include #include +#include /* * Global defines diff --git a/include/linux/sched_clock.h b/include/linux/sched_clock.h index 528718e4ed52..3a1aa2fdd9b2 100644 --- a/include/linux/sched_clock.h +++ b/include/linux/sched_clock.h @@ -5,6 +5,8 @@ #ifndef LINUX_SCHED_CLOCK #define LINUX_SCHED_CLOCK +#include + #ifdef CONFIG_GENERIC_SCHED_CLOCK /** * struct clock_read_data - data required to read from sched_clock() diff --git a/include/linux/stmmac.h b/include/linux/stmmac.h index 0db36360ef21..bd9b4205b070 100644 --- a/include/linux/stmmac.h +++ b/include/linux/stmmac.h @@ -14,6 +14,7 @@ #include #include +#include #define MTL_MAX_RX_QUEUES 8 #define MTL_MAX_TX_QUEUES 8 diff --git a/include/linux/timekeeping.h b/include/linux/timekeeping.h index 78a98bdff76d..b1c54f5ff91e 100644 --- a/include/linux/timekeeping.h +++ b/include/linux/timekeeping.h @@ -19,201 +19,6 @@ extern void legacy_timer_tick(unsigned long ticks); extern int do_settimeofday64(const struct timespec64 *ts); extern int do_sys_settimeofday64(const struct timespec64 *tv, const struct timezone *tz); - -/* - * ktime_get() family: read the current time in a multitude of ways, - * - * The default time reference is CLOCK_MONOTONIC, starting at - * boot time but not counting the time spent in suspend. - * For other references, use the functions with "real", "clocktai", - * "boottime" and "raw" suffixes. - * - * To get the time in a different format, use the ones wit - * "ns", "ts64" and "seconds" suffix. - * - * See Documentation/core-api/timekeeping.rst for more details. - */ - - -/* - * timespec64 based interfaces - */ -extern void ktime_get_raw_ts64(struct timespec64 *ts); -extern void ktime_get_ts64(struct timespec64 *ts); -extern void ktime_get_real_ts64(struct timespec64 *tv); -extern void ktime_get_coarse_ts64(struct timespec64 *ts); -extern void ktime_get_coarse_real_ts64(struct timespec64 *ts); - -void getboottime64(struct timespec64 *ts); - -/* - * time64_t base interfaces - */ -extern time64_t ktime_get_seconds(void); -extern time64_t __ktime_get_real_seconds(void); -extern time64_t ktime_get_real_seconds(void); - -/* - * ktime_t based interfaces - */ - -enum tk_offsets { - TK_OFFS_REAL, - TK_OFFS_BOOT, - TK_OFFS_TAI, - TK_OFFS_MAX, -}; - -extern ktime_t ktime_get(void); -extern ktime_t ktime_get_with_offset(enum tk_offsets offs); -extern ktime_t ktime_get_coarse_with_offset(enum tk_offsets offs); -extern ktime_t ktime_mono_to_any(ktime_t tmono, enum tk_offsets offs); -extern ktime_t ktime_get_raw(void); -extern u32 ktime_get_resolution_ns(void); - -/** - * ktime_get_real - get the real (wall-) time in ktime_t format - */ -static inline ktime_t ktime_get_real(void) -{ - return ktime_get_with_offset(TK_OFFS_REAL); -} - -static inline ktime_t ktime_get_coarse_real(void) -{ - return ktime_get_coarse_with_offset(TK_OFFS_REAL); -} - -/** - * ktime_get_boottime - Returns monotonic time since boot in ktime_t format - * - * This is similar to CLOCK_MONTONIC/ktime_get, but also includes the - * time spent in suspend. - */ -static inline ktime_t ktime_get_boottime(void) -{ - return ktime_get_with_offset(TK_OFFS_BOOT); -} - -static inline ktime_t ktime_get_coarse_boottime(void) -{ - return ktime_get_coarse_with_offset(TK_OFFS_BOOT); -} - -/** - * ktime_get_clocktai - Returns the TAI time of day in ktime_t format - */ -static inline ktime_t ktime_get_clocktai(void) -{ - return ktime_get_with_offset(TK_OFFS_TAI); -} - -static inline ktime_t ktime_get_coarse_clocktai(void) -{ - return ktime_get_coarse_with_offset(TK_OFFS_TAI); -} - -static inline ktime_t ktime_get_coarse(void) -{ - struct timespec64 ts; - - ktime_get_coarse_ts64(&ts); - return timespec64_to_ktime(ts); -} - -static inline u64 ktime_get_coarse_ns(void) -{ - return ktime_to_ns(ktime_get_coarse()); -} - -static inline u64 ktime_get_coarse_real_ns(void) -{ - return ktime_to_ns(ktime_get_coarse_real()); -} - -static inline u64 ktime_get_coarse_boottime_ns(void) -{ - return ktime_to_ns(ktime_get_coarse_boottime()); -} - -static inline u64 ktime_get_coarse_clocktai_ns(void) -{ - return ktime_to_ns(ktime_get_coarse_clocktai()); -} - -/** - * ktime_mono_to_real - Convert monotonic time to clock realtime - */ -static inline ktime_t ktime_mono_to_real(ktime_t mono) -{ - return ktime_mono_to_any(mono, TK_OFFS_REAL); -} - -static inline u64 ktime_get_ns(void) -{ - return ktime_to_ns(ktime_get()); -} - -static inline u64 ktime_get_real_ns(void) -{ - return ktime_to_ns(ktime_get_real()); -} - -static inline u64 ktime_get_boottime_ns(void) -{ - return ktime_to_ns(ktime_get_boottime()); -} - -static inline u64 ktime_get_clocktai_ns(void) -{ - return ktime_to_ns(ktime_get_clocktai()); -} - -static inline u64 ktime_get_raw_ns(void) -{ - return ktime_to_ns(ktime_get_raw()); -} - -extern u64 ktime_get_mono_fast_ns(void); -extern u64 ktime_get_raw_fast_ns(void); -extern u64 ktime_get_boot_fast_ns(void); -extern u64 ktime_get_real_fast_ns(void); - -/* - * timespec64/time64_t interfaces utilizing the ktime based ones - * for API completeness, these could be implemented more efficiently - * if needed. - */ -static inline void ktime_get_boottime_ts64(struct timespec64 *ts) -{ - *ts = ktime_to_timespec64(ktime_get_boottime()); -} - -static inline void ktime_get_coarse_boottime_ts64(struct timespec64 *ts) -{ - *ts = ktime_to_timespec64(ktime_get_coarse_boottime()); -} - -static inline time64_t ktime_get_boottime_seconds(void) -{ - return ktime_divns(ktime_get_coarse_boottime(), NSEC_PER_SEC); -} - -static inline void ktime_get_clocktai_ts64(struct timespec64 *ts) -{ - *ts = ktime_to_timespec64(ktime_get_clocktai()); -} - -static inline void ktime_get_coarse_clocktai_ts64(struct timespec64 *ts) -{ - *ts = ktime_to_timespec64(ktime_get_coarse_clocktai()); -} - -static inline time64_t ktime_get_clocktai_seconds(void) -{ - return ktime_divns(ktime_get_coarse_clocktai(), NSEC_PER_SEC); -} - /* * RTC specific */ @@ -308,4 +113,4 @@ void read_persistent_wall_and_boot_offset(struct timespec64 *wall_clock, extern int update_persistent_clock64(struct timespec64 now); #endif -#endif +#endif /* _LINUX_TIMEKEEPING_H */ diff --git a/init/main.c b/init/main.c index eb01e121d2f1..8c1b2410e74b 100644 --- a/init/main.c +++ b/init/main.c @@ -98,6 +98,7 @@ #include #include #include +#include #include #include diff --git a/kernel/time/ntp.c b/kernel/time/ntp.c index 406dccb79c2b..804f06801737 100644 --- a/kernel/time/ntp.c +++ b/kernel/time/ntp.c @@ -18,6 +18,7 @@ #include #include #include +#include #include "ntp_internal.h" #include "timekeeping_internal.h" diff --git a/kernel/time/posix-timers.c b/kernel/time/posix-timers.c index dd5697d7347b..14f82cd95d10 100644 --- a/kernel/time/posix-timers.c +++ b/kernel/time/posix-timers.c @@ -13,6 +13,7 @@ #include #include #include +#include #include #include diff --git a/kernel/time/time.c b/kernel/time/time.c index 29923b20e0e4..7292ed074742 100644 --- a/kernel/time/time.c +++ b/kernel/time/time.c @@ -29,6 +29,7 @@ #include #include #include +#include #include #include #include diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c index 8a364aa9881a..4dfee925adc8 100644 --- a/kernel/time/timekeeping.c +++ b/kernel/time/timekeeping.c @@ -22,6 +22,7 @@ #include #include #include +#include #include "tick-internal.h" #include "ntp_internal.h" diff --git a/sound/pci/hda/hda_controller.c b/sound/pci/hda/hda_controller.c index ca2f2ecd1488..efbbe624d81d 100644 --- a/sound/pci/hda/hda_controller.c +++ b/sound/pci/hda/hda_controller.c @@ -16,6 +16,7 @@ #include #include #include +#include #ifdef CONFIG_X86 /* for art-tsc conversion */ -- 2.25.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel