Y2038

y2038@lists.linaro.org

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1128 discussions

Re: [Y2038] [PATCH v3] scsi: stex: Remove use of struct timeval

by Arnd Bergmann

On Tuesday 05 May 2015 12:34:27 Tina Ruchandani wrote: > Function stex_gettime uses 'struct timeval' whose tv_sec value > will overflow on 32-bit systems in year 2038 and beyond. This patch > replaces the use of struct timeval and do_gettimeofday with > ktime_get_real_seconds, which returns a 64-bit seconds value. > > Suggested-by: Arnd Bergmann <arnd(a)arndb.de> > Signed-off-by: Tina Ruchandani <ruchandani.tina(a)gmail.com> > -- [+ y2038 list] Looks good, Reviewed-by: Arnd Bergmann <arnd(a)arndb.de> > Changes in v3: > - Remove stex_gettime altogether, directly assign the timestamp. > Changes in v2: > - Change subject line to indicate that the patch is restricted to stex driver. > --- > --- > drivers/scsi/stex.c | 13 +++---------- > 1 file changed, 3 insertions(+), 10 deletions(-) > > diff --git a/drivers/scsi/stex.c b/drivers/scsi/stex.c > index 98a62bc..84e196e 100644 > --- a/drivers/scsi/stex.c > +++ b/drivers/scsi/stex.c > @@ -25,6 +25,7 @@ > #include <linux/types.h> > #include <linux/module.h> > #include <linux/spinlock.h> > +#include <linux/ktime.h> > #include <asm/io.h> > #include <asm/irq.h> > #include <asm/byteorder.h> > @@ -362,14 +363,6 @@ MODULE_DESCRIPTION("Promise Technology SuperTrak EX Controllers"); > MODULE_LICENSE("GPL"); > MODULE_VERSION(ST_DRIVER_VERSION); > > -static void stex_gettime(__le64 *time) > -{ > - struct timeval tv; > - > - do_gettimeofday(&tv); > - *time = cpu_to_le64(tv.tv_sec); > -} > - > static struct status_msg *stex_get_status(struct st_hba *hba) > { > struct status_msg *status = hba->status_buffer + hba->status_tail; > @@ -1002,7 +995,7 @@ static int stex_common_handshake(struct st_hba *hba) > h->req_cnt = cpu_to_le16(hba->rq_count+1); > h->status_sz = cpu_to_le16(sizeof(struct status_msg)); > h->status_cnt = cpu_to_le16(hba->sts_count+1); > - stex_gettime(&h->hosttime); > + h->hosttime = cpu_to_le64(ktime_get_real_seconds()); > h->partner_type = HMU_PARTNER_TYPE; > if (hba->extra_offset) { > h->extra_offset = cpu_to_le32(hba->extra_offset); > @@ -1076,7 +1069,7 @@ static int stex_ss_handshake(struct st_hba *hba) > h->req_cnt = cpu_to_le16(hba->rq_count+1); > h->status_sz = cpu_to_le16(sizeof(struct status_msg)); > h->status_cnt = cpu_to_le16(hba->sts_count+1); > - stex_gettime(&h->hosttime); > + h->hosttime = cpu_to_le64(ktime_get_real_seconds()); > h->partner_type = HMU_PARTNER_TYPE; > h->extra_offset = h->extra_size = 0; > scratch_size = (hba->sts_count+1)*sizeof(u32); >

9 years, 7 months

[RFC 00/37] converting all system calls to 64-bit time_t

by Arnd Bergmann

Apologies for the overly long patch series, I was hoping this would have been simpler. This is my first draft of how we could modify the system call interface in Linux to support user space with 64-bit time_t in addition to the existing 32-bit time_t based interfaces. For the time being, I'm mainly interested in feedback about the general approach, to see if this is a reasonable concept, or whether we should do this in a completely different way. The current submission is for a relatively small group of people and only for the y2038 mailing list, and if we can agree on the approach, I will post it to a wider group of people and mailing lists next. The overall approach I have taken here is as follows: * Since 64-bit architectures already support two versions of each system call that passes a time value in order to run 32-bit user space, I'm not adding new system calls for the most part, but instead make 32-bit architectures use the same compat handlers that 64-bit architectures already use. * The existing syscall numbers are modified to point to the compat_sys_* functions, and new numbers are assigned to point to the existing handlers that now deal with 64-bit time_t based structures * This series does not touch any ioctl implementation, but should be otherwise complete regarding the system calls. We are still trying to find out exactly which ioctls are affected and have not come up with a complete list at this point. It's probably a good idea though to do at least the essential ioctls before merging the series, so we can have a better understanding of how it will be done in the end. * Each data structure we need to modify gets a new definition with a __kernel_ prefix, e.g. struct __kernel_timespec to replace struct timespec. This keeps the new structures out of the user libc namespace, but still allows the structure to be integrated into other data structures, e.g. for ioctl. * There is no #ifdef in the UAPI headers at this point that would check for the kind of user space that is in use. Unfortunately, I believe we will need to add that in order to do some of the particularly tricky ioctls later. * At first, all system call implementations are modified, but this is done in a way that is not supposed to have any ABI-visible effect on existing architectures. * After all system calls are converted, we can change one architecture at a time to select ARCH_HAS_COMPAT_TIME, and modify its system call table accordingly. In this version, I do it for ARM32, x86-32, and x86-64 for demonstration purposes. * A follow-up series changes over all other architectures. * The last patch in the series changes the CONFIG_COMPAT_TIME Kconfig symbol to be user visible. Disabling this symbol will get you a kernel that intentionally breaks support for old tasks in order to provide an interface that will survive 2038. This is meant mostly as a debugging help for now, to let people build a y2038 safe distro, but at some point in the 2030s, we should remove that option and all the compat handling. Arnd Bergmann (37): initramfs: use vfs_stat/lstat directly y2038: introduce linux/compat_time.h header y2038: introduce CONFIG_COMPAT_TIME y2038: make linux/compat_time.h usable on 32-bit y2038: compile compat time code even when CONFIG_COMPAT is not set y2038: add compat_sys_rt_sigtimedwait variants y2038: introduce struct __kernel_rusage y2038: introduce struct __kernel_timespec y2038: introduce struct __kernel_stat y2038: use timespec64 for poll/select/recvmmsg y2038: add compat_{get,put}_timespec64 y2038: use __kernel_timespec in sys_aio_getevents y2038: factor out compat fd_set and sigset handling y2038: add compat handling for sys_recvmmsg y2038: add compat handling for sys_semtimedop y2038: extend sysvipc data structures for 64-bit time_t y2038: ipc: report long times to user space y2038: introduce {get,put}_itimerspec y2038: use __kernel_itimerspec in timerfd y2038: introduce compat_sys_pselect6_time64 y2038: introduce compat_sys_ppoll_time64 y2038: use __kernel_timespec for sys_mq_timed{send,receive} y2038: make compat_sys_mq_timed{send,receive} usable on 32-bit y2038: use __kernel_timespec in sys_utimensat y2038: introduce timespec64_to_jiffies y2038: use __kernel_timespec in sys_rt_sigtimedwait y2038: use __kernel_timespec in sys_futex y2038: introduce jiffies_to_timespec64 y2038: use __kernel_timespec in sys_sched_rr_get_interval y2038: move compat posix time handling to posix-timers.c y2038: introduce struct __kernel_timex y2038: convert all timex users to use __kernel_timex y2038: convert posix clock syscalls y2038: ignore new syscalls for now ARM: use CONFIG_COMPAT_TIME x86: use COMPAT_SYS_TIME [NOT YET] y2038: make CONFIG_COMPAT_TIME optional arch/Kconfig | 12 ++ arch/alpha/include/asm/Kbuild | 4 + arch/alpha/include/uapi/asm/ipcbuf.h | 1 - arch/alpha/include/uapi/asm/msgbuf.h | 27 --- arch/alpha/include/uapi/asm/sembuf.h | 22 -- arch/alpha/include/uapi/asm/shmbuf.h | 38 ---- arch/alpha/include/uapi/asm/stat.h | 4 + arch/alpha/kernel/osf_sys.c | 8 +- arch/arm/Kconfig | 1 + arch/arm/include/asm/unistd.h | 11 +- arch/arm/include/uapi/asm/stat.h | 2 + arch/arm/include/uapi/asm/unistd.h | 22 ++ arch/arm/kernel/calls.S | 101 ++++++---- arch/arm/kernel/sys_oabi-compat.c | 9 +- arch/arm64/include/asm/compat.h | 43 ++-- arch/avr32/include/asm/Kbuild | 4 + arch/avr32/include/uapi/asm/Kbuild | 1 - arch/avr32/include/uapi/asm/msgbuf.h | 31 --- arch/avr32/include/uapi/asm/sembuf.h | 25 --- arch/avr32/include/uapi/asm/shmbuf.h | 42 ---- arch/avr32/include/uapi/asm/stat.h | 2 + arch/blackfin/include/uapi/asm/stat.h | 2 + arch/cris/include/asm/Kbuild | 6 +- arch/cris/include/uapi/asm/ipcbuf.h | 1 - arch/cris/include/uapi/asm/msgbuf.h | 33 --- arch/cris/include/uapi/asm/sembuf.h | 25 --- arch/cris/include/uapi/asm/shmbuf.h | 42 ---- arch/cris/include/uapi/asm/stat.h | 2 + arch/frv/include/asm/Kbuild | 4 + arch/frv/include/uapi/asm/ipcbuf.h | 1 - arch/frv/include/uapi/asm/msgbuf.h | 32 --- arch/frv/include/uapi/asm/sembuf.h | 26 --- arch/frv/include/uapi/asm/shmbuf.h | 43 ---- arch/frv/include/uapi/asm/stat.h | 2 + arch/ia64/include/asm/Kbuild | 4 + arch/ia64/include/uapi/asm/ipcbuf.h | 1 - arch/ia64/include/uapi/asm/msgbuf.h | 27 --- arch/ia64/include/uapi/asm/sembuf.h | 22 -- arch/ia64/include/uapi/asm/shmbuf.h | 38 ---- arch/ia64/include/uapi/asm/stat.h | 4 + arch/m32r/include/asm/Kbuild | 4 + arch/m32r/include/uapi/asm/ipcbuf.h | 1 - arch/m32r/include/uapi/asm/msgbuf.h | 31 --- arch/m32r/include/uapi/asm/sembuf.h | 25 --- arch/m32r/include/uapi/asm/shmbuf.h | 42 ---- arch/m32r/include/uapi/asm/stat.h | 1 + arch/m68k/include/uapi/asm/stat.h | 2 + arch/mips/include/asm/compat.h | 49 ++--- arch/mips/include/uapi/asm/msgbuf.h | 56 ++++-- arch/mips/include/uapi/asm/sembuf.h | 15 +- arch/mips/include/uapi/asm/shmbuf.h | 23 ++- arch/mips/include/uapi/asm/stat.h | 1 + arch/mn10300/include/asm/Kbuild | 4 + arch/mn10300/include/uapi/asm/ipcbuf.h | 1 - arch/mn10300/include/uapi/asm/msgbuf.h | 31 --- arch/mn10300/include/uapi/asm/sembuf.h | 25 --- arch/mn10300/include/uapi/asm/shmbuf.h | 42 ---- arch/mn10300/include/uapi/asm/stat.h | 2 + arch/parisc/include/asm/compat.h | 43 ++-- arch/parisc/include/uapi/asm/msgbuf.h | 32 +-- arch/parisc/include/uapi/asm/sembuf.h | 13 +- arch/parisc/include/uapi/asm/shmbuf.h | 18 +- arch/parisc/include/uapi/asm/stat.h | 1 + arch/powerpc/include/asm/compat.h | 43 ++-- arch/powerpc/include/uapi/asm/msgbuf.h | 18 +- arch/powerpc/include/uapi/asm/sembuf.h | 14 +- arch/powerpc/include/uapi/asm/shmbuf.h | 18 +- arch/powerpc/include/uapi/asm/stat.h | 25 +++ arch/s390/include/asm/Kbuild | 4 +- arch/s390/include/asm/compat.h | 43 ++-- arch/s390/include/uapi/asm/msgbuf.h | 37 ---- arch/s390/include/uapi/asm/sembuf.h | 29 --- arch/s390/include/uapi/asm/shmbuf.h | 48 ----- arch/s390/include/uapi/asm/stat.h | 24 +++ arch/s390/kernel/time.c | 2 +- arch/sh/include/uapi/asm/stat.h | 2 + arch/sparc/include/asm/compat.h | 43 ++-- arch/sparc/include/uapi/asm/msgbuf.h | 21 +- arch/sparc/include/uapi/asm/sembuf.h | 15 +- arch/sparc/include/uapi/asm/shmbuf.h | 20 +- arch/sparc/include/uapi/asm/stat.h | 28 +++ arch/tile/include/asm/compat.h | 43 ++-- arch/x86/Kconfig | 1 + arch/x86/include/asm/compat.h | 44 ++-- arch/x86/include/asm/ftrace.h | 2 +- arch/x86/include/asm/sys_ia32.h | 2 +- arch/x86/include/asm/unistd.h | 21 +- arch/x86/include/uapi/asm/msgbuf.h | 41 +++- arch/x86/include/uapi/asm/sembuf.h | 10 + arch/x86/include/uapi/asm/shmbuf.h | 58 +++++- arch/x86/include/uapi/asm/stat.h | 49 +++-- arch/x86/kernel/cpu/perf_event.c | 2 +- arch/x86/syscalls/syscall_32.tbl | 98 +++++---- arch/xtensa/include/uapi/asm/msgbuf.h | 24 +-- arch/xtensa/include/uapi/asm/sembuf.h | 16 +- arch/xtensa/include/uapi/asm/shmbuf.h | 36 +--- arch/xtensa/include/uapi/asm/stat.h | 2 + drivers/ptp/ptp_clock.c | 2 +- fs/Makefile | 1 + fs/aio.c | 54 +++-- fs/compat.c | 198 +++++++++++------- fs/eventpoll.c | 12 +- fs/select.c | 64 +++--- fs/stat.c | 12 +- fs/timerfd.c | 13 +- fs/utimes.c | 19 +- include/linux/audit.h | 4 +- include/linux/compat.h | 261 +++--------------------- include/linux/compat_time.h | 298 +++++++++++++++++++++++++++ include/linux/hrtimer.h | 2 +- include/linux/jiffies.h | 23 ++- include/linux/msg.h | 7 +- include/linux/poll.h | 10 +- include/linux/posix-clock.h | 2 +- include/linux/posix-timers.h | 11 +- include/linux/resource.h | 8 +- include/linux/sem.h | 3 +- include/linux/shm.h | 7 +- include/linux/signal.h | 3 +- include/linux/socket.h | 4 +- include/linux/stat.h | 3 + include/linux/syscalls.h | 73 ++++--- include/linux/thread_info.h | 8 +- include/linux/time.h | 11 +- include/linux/time64.h | 25 ++- include/linux/timex.h | 6 +- include/net/compat.h | 3 + include/uapi/asm-generic/kernel_stat.h | 36 ++++ include/uapi/asm-generic/msgbuf.h | 16 +- include/uapi/asm-generic/sembuf.h | 26 ++- include/uapi/asm-generic/shmbuf.h | 16 +- include/uapi/asm-generic/stat.h | 12 +- include/uapi/linux/net.h | 1 + include/uapi/linux/resource.h | 32 +++ include/uapi/linux/time.h | 17 ++ include/uapi/linux/timex.h | 45 +++++ init/do_mounts.h | 22 +- init/initramfs.c | 14 +- ipc/compat.c | 18 +- ipc/compat_mq.c | 28 --- ipc/mqueue.c | 140 +++++++++---- ipc/msg.c | 23 ++- ipc/sem.c | 92 ++++++--- ipc/shm.c | 21 +- ipc/syscall.c | 9 +- kernel/Makefile | 1 + kernel/audit.h | 2 +- kernel/auditsc.c | 14 +- kernel/compat.c | 340 +++++++++++++------------------ kernel/exit.c | 6 +- kernel/futex.c | 10 +- kernel/sched/core.c | 35 +++- kernel/signal.c | 13 +- kernel/sys.c | 23 ++- kernel/sys_ni.c | 38 ++++ kernel/time/alarmtimer.c | 13 +- kernel/time/hrtimer.c | 20 +- kernel/time/ntp.c | 16 +- kernel/time/ntp_internal.h | 4 +- kernel/time/posix-clock.c | 2 +- kernel/time/posix-cpu-timers.c | 14 +- kernel/time/posix-timers.c | 357 ++++++++++++++++++++++++++++----- kernel/time/time.c | 63 ++++-- kernel/time/timekeeping.c | 2 +- net/compat.c | 18 +- net/socket.c | 52 ++++- scripts/checksyscalls.sh | 25 +++ 167 files changed, 2564 insertions(+), 2289 deletions(-) delete mode 100644 arch/alpha/include/uapi/asm/ipcbuf.h delete mode 100644 arch/alpha/include/uapi/asm/msgbuf.h delete mode 100644 arch/alpha/include/uapi/asm/sembuf.h delete mode 100644 arch/alpha/include/uapi/asm/shmbuf.h delete mode 100644 arch/avr32/include/uapi/asm/msgbuf.h delete mode 100644 arch/avr32/include/uapi/asm/sembuf.h delete mode 100644 arch/avr32/include/uapi/asm/shmbuf.h delete mode 100644 arch/cris/include/uapi/asm/ipcbuf.h delete mode 100644 arch/cris/include/uapi/asm/msgbuf.h delete mode 100644 arch/cris/include/uapi/asm/sembuf.h delete mode 100644 arch/cris/include/uapi/asm/shmbuf.h delete mode 100644 arch/frv/include/uapi/asm/ipcbuf.h delete mode 100644 arch/frv/include/uapi/asm/msgbuf.h delete mode 100644 arch/frv/include/uapi/asm/sembuf.h delete mode 100644 arch/frv/include/uapi/asm/shmbuf.h delete mode 100644 arch/ia64/include/uapi/asm/ipcbuf.h delete mode 100644 arch/ia64/include/uapi/asm/msgbuf.h delete mode 100644 arch/ia64/include/uapi/asm/sembuf.h delete mode 100644 arch/ia64/include/uapi/asm/shmbuf.h delete mode 100644 arch/m32r/include/uapi/asm/ipcbuf.h delete mode 100644 arch/m32r/include/uapi/asm/msgbuf.h delete mode 100644 arch/m32r/include/uapi/asm/sembuf.h delete mode 100644 arch/m32r/include/uapi/asm/shmbuf.h delete mode 100644 arch/mn10300/include/uapi/asm/ipcbuf.h delete mode 100644 arch/mn10300/include/uapi/asm/msgbuf.h delete mode 100644 arch/mn10300/include/uapi/asm/sembuf.h delete mode 100644 arch/mn10300/include/uapi/asm/shmbuf.h delete mode 100644 arch/s390/include/uapi/asm/msgbuf.h delete mode 100644 arch/s390/include/uapi/asm/sembuf.h delete mode 100644 arch/s390/include/uapi/asm/shmbuf.h create mode 100644 include/linux/compat_time.h create mode 100644 include/uapi/asm-generic/kernel_stat.h -- 2.1.0.rc2

9 years, 7 months

[PATCH] Staging: rts5208: Replace timeval with timespec64

by Ksenija Stanojevic

struct timeval tv is used to get current time. 32-bit systems using 'struct timeval' will break in the year 2038, so we have to replace that code with more appropriate types. Signed-off-by: Ksenija Stanojevic <ksenija.stanojevic(a)gmail.com> Reviewed-by: Arnd Bergmann <arnd(a)arndb.de> --- drivers/staging/rts5208/rtsx.h | 25 ++++++++++++++----------- 1 file changed, 14 insertions(+), 11 deletions(-) diff --git a/drivers/staging/rts5208/rtsx.h b/drivers/staging/rts5208/rtsx.h index 9e6ecb7..f768fc0 100644 --- a/drivers/staging/rts5208/rtsx.h +++ b/drivers/staging/rts5208/rtsx.h @@ -37,7 +37,7 @@ #include <linux/cdrom.h> #include <linux/workqueue.h> #include <linux/timer.h> -#include <linux/time.h> +#include <linux/time64.h> #include <scsi/scsi.h> #include <scsi/scsi_cmnd.h> @@ -151,21 +151,24 @@ static inline struct rtsx_dev *host_to_rtsx(struct Scsi_Host *host) static inline void get_current_time(u8 *timeval_buf, int buf_len) { - struct timeval tv; + struct timespec64 ts64; + u32 tv_usec; if (!timeval_buf || (buf_len < 8)) return; - do_gettimeofday(&tv); + getnstimeofday64(&ts64); - timeval_buf[0] = (u8)(tv.tv_sec >> 24); - timeval_buf[1] = (u8)(tv.tv_sec >> 16); - timeval_buf[2] = (u8)(tv.tv_sec >> 8); - timeval_buf[3] = (u8)(tv.tv_sec); - timeval_buf[4] = (u8)(tv.tv_usec >> 24); - timeval_buf[5] = (u8)(tv.tv_usec >> 16); - timeval_buf[6] = (u8)(tv.tv_usec >> 8); - timeval_buf[7] = (u8)(tv.tv_usec); + tv_usec = ts64.tv_nsec/NSEC_PER_USEC; + + timeval_buf[0] = (u8)(ts64.tv_sec >> 24); + timeval_buf[1] = (u8)(ts64.tv_sec >> 16); + timeval_buf[2] = (u8)(ts64.tv_sec >> 8); + timeval_buf[3] = (u8)(ts64.tv_sec); + timeval_buf[4] = (u8)(tv_usec >> 24); + timeval_buf[5] = (u8)(tv_usec >> 16); + timeval_buf[6] = (u8)(tv_usec >> 8); + timeval_buf[7] = (u8)(tv_usec); } /* The scsi_lock() and scsi_unlock() macros protect the sm_state and the -- 1.9.1

9 years, 7 months

[PATCH v2 15/15] k_clock:Remove the 32bit methods with timespec/itimerspec type

by Baolin Wang

All of the k_clock users have been converted to the new methods. This patch removes the older methods with timepsec/itimerspec type. As a result, the k_clock structure is ready for the year 2038. Signed-off-by: Baolin Wang <baolin.wang(a)linaro.org> --- include/linux/posix-timers.h | 9 ----- kernel/time/posix-timers.c | 74 +++--------------------------------------- 2 files changed, 5 insertions(+), 78 deletions(-) diff --git a/include/linux/posix-timers.h b/include/linux/posix-timers.h index 35786c5..7c3dae2 100644 --- a/include/linux/posix-timers.h +++ b/include/linux/posix-timers.h @@ -97,29 +97,20 @@ struct k_itimer { }; struct k_clock { - int (*clock_getres) (const clockid_t which_clock, struct timespec *tp); int (*clock_getres64) (const clockid_t which_clock, struct timespec64 *tp); - int (*clock_set) (const clockid_t which_clock, - const struct timespec *tp); int (*clock_set64) (const clockid_t which_clock, const struct timespec64 *tp); - int (*clock_get) (const clockid_t which_clock, struct timespec * tp); int (*clock_get64) (const clockid_t which_clock, struct timespec64 *tp); int (*clock_adj) (const clockid_t which_clock, struct timex *tx); int (*timer_create) (struct k_itimer *timer); int (*nsleep) (const clockid_t which_clock, int flags, struct timespec *, struct timespec __user *); long (*nsleep_restart) (struct restart_block *restart_block); - int (*timer_set) (struct k_itimer * timr, int flags, - struct itimerspec * new_setting, - struct itimerspec * old_setting); int (*timer_set64) (struct k_itimer *timr, int flags, struct itimerspec64 *new_setting, struct itimerspec64 *old_setting); int (*timer_del) (struct k_itimer * timr); #define TIMER_RETRY 1 - void (*timer_get) (struct k_itimer * timr, - struct itimerspec * cur_setting); void (*timer_get64) (struct k_itimer *timr, struct itimerspec64 *cur_setting); }; diff --git a/kernel/time/posix-timers.c b/kernel/time/posix-timers.c index 8ced634..ba95172 100644 --- a/kernel/time/posix-timers.c +++ b/kernel/time/posix-timers.c @@ -140,7 +140,6 @@ static int common_timer_del(struct k_itimer *timer); static enum hrtimer_restart posix_timer_fn(struct hrtimer *data); static struct k_itimer *__lock_timer(timer_t timer_id, unsigned long *flags); -static struct k_clock *clockid_to_kclock(const clockid_t id); #define lock_timer(tid, flags) \ ({ struct k_itimer *__timr; \ @@ -514,57 +513,6 @@ static struct pid *good_sigevent(sigevent_t * event) return task_pid(rtn); } -static int default_timer_get64(struct k_itimer *timr, - struct itimerspec64 *cur_setting64) -{ - struct itimerspec cur_setting; - struct k_clock *kc = clockid_to_kclock(timr->it_clock); - - kc->timer_get(timr, &cur_setting); - return 0; -} - -static int default_timer_set64(struct k_itimer *timr, int flags, - struct itimerspec64 *new_setting64, - struct itimerspec64 *old_setting64) -{ - struct k_clock *kc = clockid_to_kclock(timr->it_clock); - struct itimerspec new_setting, old_setting; - - kc->timer_set(timr, flags, &new_setting, &old_setting); - return 0; -} - -static int default_clock_set64(const clockid_t which_clock, - const struct timespec64 *tp64) -{ - struct k_clock *kc = clockid_to_kclock(which_clock); - struct timespec tp; - - kc->clock_set(which_clock, &tp); - return 0; -} - -static int default_clock_get64(const clockid_t which_clock, - struct timespec64 *tp64) -{ - struct k_clock *kc = clockid_to_kclock(which_clock); - struct timespec tp; - - kc->clock_get(which_clock, &tp); - return 0; -} - -static int default_clock_getres64(const clockid_t which_clock, - struct timespec64 *tp64) -{ - struct k_clock *kc = clockid_to_kclock(which_clock); - struct timespec tp; - - kc->clock_getres(which_clock, &tp); - return 0; -} - void posix_timers_register_clock(const clockid_t clock_id, struct k_clock *new_clock) { @@ -574,28 +522,17 @@ void posix_timers_register_clock(const clockid_t clock_id, return; } - if (!new_clock->clock_get && !new_clock->clock_get64) { - printk(KERN_WARNING "POSIX clock id %d lacks clock_get() and clock_get64()\n", + if (!new_clock->clock_get64) { + printk(KERN_WARNING "POSIX clock id %d lacks clock_get64()\n", clock_id); return; } - if (!new_clock->clock_getres && !new_clock->clock_getres64) { - printk(KERN_WARNING "POSIX clock id %d lacks clock_getres() and clock_getres64()\n", + if (!new_clock->clock_getres64) { + printk(KERN_WARNING "POSIX clock id %d lacks clock_getres64()\n", clock_id); return; } - if (new_clock->timer_get && !new_clock->timer_get64) - new_clock->timer_get64 = default_timer_get64; - if (new_clock->timer_set && !new_clock->timer_set64) - new_clock->timer_set64 = default_timer_set64; - if (new_clock->clock_set && !new_clock->clock_set64) - new_clock->clock_set64 = default_clock_set64; - if (new_clock->clock_get && !new_clock->clock_get64) - new_clock->clock_get64 = default_clock_get64; - if (new_clock->clock_getres && !new_clock->clock_getres64) - new_clock->clock_getres64 = default_clock_getres64; - posix_clocks[clock_id] = *new_clock; } EXPORT_SYMBOL_GPL(posix_timers_register_clock); @@ -642,8 +579,7 @@ static struct k_clock *clockid_to_kclock(const clockid_t id) return (id & CLOCKFD_MASK) == CLOCKFD ? &clock_posix_dynamic : &clock_posix_cpu; - if (id >= MAX_CLOCKS || (!posix_clocks[id].clock_getres - && !posix_clocks[id].clock_getres64)) + if (id >= MAX_CLOCKS || !posix_clocks[id].clock_getres64) return NULL; return &posix_clocks[id]; } -- 1.7.9.5

9 years, 7 months

[PATCH v2 14/15] time/posix-cpu-timers:Convert to the 64bit methods for k_clock structure

by Baolin Wang

This patch changes to the new methods of k_clock structure with timespec64 type, converts the timespec/itimerspec type to timespec64/itimerspec64 type for the callback function in posix-cpu-timers.c file. Signed-off-by: Baolin Wang <baolin.wang(a)linaro.org> --- kernel/time/posix-cpu-timers.c | 83 +++++++++++++++++++++------------------- 1 file changed, 44 insertions(+), 39 deletions(-) diff --git a/kernel/time/posix-cpu-timers.c b/kernel/time/posix-cpu-timers.c index 0075da7..a4651cd 100644 --- a/kernel/time/posix-cpu-timers.c +++ b/kernel/time/posix-cpu-timers.c @@ -52,7 +52,7 @@ static int check_clock(const clockid_t which_clock) } static inline unsigned long long -timespec_to_sample(const clockid_t which_clock, const struct timespec *tp) +timespec64_to_sample(const clockid_t which_clock, const struct timespec64 *tp) { unsigned long long ret; @@ -60,19 +60,19 @@ timespec_to_sample(const clockid_t which_clock, const struct timespec *tp) if (CPUCLOCK_WHICH(which_clock) == CPUCLOCK_SCHED) { ret = (unsigned long long)tp->tv_sec * NSEC_PER_SEC + tp->tv_nsec; } else { - ret = cputime_to_expires(timespec_to_cputime(tp)); + ret = cputime_to_expires(timespec64_to_cputime(tp)); } return ret; } -static void sample_to_timespec(const clockid_t which_clock, +static void sample_to_timespec64(const clockid_t which_clock, unsigned long long expires, - struct timespec *tp) + struct timespec64 *tp) { if (CPUCLOCK_WHICH(which_clock) == CPUCLOCK_SCHED) - *tp = ns_to_timespec(expires); + *tp = ns_to_timespec64(expires); else - cputime_to_timespec((__force cputime_t)expires, tp); + cputime_to_timespec64((__force cputime_t)expires, tp); } /* @@ -141,7 +141,7 @@ static inline unsigned long long virt_ticks(struct task_struct *p) } static int -posix_cpu_clock_getres(const clockid_t which_clock, struct timespec *tp) +posix_cpu_clock_getres(const clockid_t which_clock, struct timespec64 *tp) { int error = check_clock(which_clock); if (!error) { @@ -160,7 +160,7 @@ posix_cpu_clock_getres(const clockid_t which_clock, struct timespec *tp) } static int -posix_cpu_clock_set(const clockid_t which_clock, const struct timespec *tp) +posix_cpu_clock_set(const clockid_t which_clock, const struct timespec64 *tp) { /* * You can never reset a CPU clock, but we check for other errors @@ -263,7 +263,7 @@ static int cpu_clock_sample_group(const clockid_t which_clock, static int posix_cpu_clock_get_task(struct task_struct *tsk, const clockid_t which_clock, - struct timespec *tp) + struct timespec64 *tp) { int err = -EINVAL; unsigned long long rtn; @@ -277,13 +277,14 @@ static int posix_cpu_clock_get_task(struct task_struct *tsk, } if (!err) - sample_to_timespec(which_clock, rtn, tp); + sample_to_timespec64(which_clock, rtn, tp); return err; } -static int posix_cpu_clock_get(const clockid_t which_clock, struct timespec *tp) +static int posix_cpu_clock_get(const clockid_t which_clock, + struct timespec64 *tp) { const pid_t pid = CPUCLOCK_PID(which_clock); int err = -EINVAL; @@ -598,7 +599,7 @@ static inline void posix_cpu_timer_kick_nohz(void) { } * and try again. (This happens when the timer is in the middle of firing.) */ static int posix_cpu_timer_set(struct k_itimer *timer, int timer_flags, - struct itimerspec *new, struct itimerspec *old) + struct itimerspec64 *new, struct itimerspec64 *old) { unsigned long flags; struct sighand_struct *sighand; @@ -608,7 +609,7 @@ static int posix_cpu_timer_set(struct k_itimer *timer, int timer_flags, WARN_ON_ONCE(p == NULL); - new_expires = timespec_to_sample(timer->it_clock, &new->it_value); + new_expires = timespec64_to_sample(timer->it_clock, &new->it_value); /* * Protect against sighand release/switch in exit/exec and p->cpu_timers @@ -669,7 +670,7 @@ static int posix_cpu_timer_set(struct k_itimer *timer, int timer_flags, bump_cpu_timer(timer, val); if (val < timer->it.cpu.expires) { old_expires = timer->it.cpu.expires - val; - sample_to_timespec(timer->it_clock, + sample_to_timespec64(timer->it_clock, old_expires, &old->it_value); } else { @@ -709,7 +710,7 @@ static int posix_cpu_timer_set(struct k_itimer *timer, int timer_flags, * Install the new reload setting, and * set up the signal and overrun bookkeeping. */ - timer->it.cpu.incr = timespec_to_sample(timer->it_clock, + timer->it.cpu.incr = timespec64_to_sample(timer->it_clock, &new->it_interval); /* @@ -734,7 +735,7 @@ static int posix_cpu_timer_set(struct k_itimer *timer, int timer_flags, ret = 0; out: if (old) { - sample_to_timespec(timer->it_clock, + sample_to_timespec64(timer->it_clock, old_incr, &old->it_interval); } if (!ret) @@ -742,7 +743,7 @@ static int posix_cpu_timer_set(struct k_itimer *timer, int timer_flags, return ret; } -static void posix_cpu_timer_get(struct k_itimer *timer, struct itimerspec *itp) +static void posix_cpu_timer_get(struct k_itimer *timer, struct itimerspec64 *itp) { unsigned long long now; struct task_struct *p = timer->it.cpu.task; @@ -752,7 +753,7 @@ static void posix_cpu_timer_get(struct k_itimer *timer, struct itimerspec *itp) /* * Easy part: convert the reload time. */ - sample_to_timespec(timer->it_clock, + sample_to_timespec64(timer->it_clock, timer->it.cpu.incr, &itp->it_interval); if (timer->it.cpu.expires == 0) { /* Timer not armed at all. */ @@ -782,7 +783,7 @@ static void posix_cpu_timer_get(struct k_itimer *timer, struct itimerspec *itp) * Call the timer disarmed, nothing else to do. */ timer->it.cpu.expires = 0; - sample_to_timespec(timer->it_clock, timer->it.cpu.expires, + sample_to_timespec64(timer->it_clock, timer->it.cpu.expires, &itp->it_value); } else { cpu_timer_sample_group(timer->it_clock, p, &now); @@ -791,7 +792,7 @@ static void posix_cpu_timer_get(struct k_itimer *timer, struct itimerspec *itp) } if (now < timer->it.cpu.expires) { - sample_to_timespec(timer->it_clock, + sample_to_timespec64(timer->it_clock, timer->it.cpu.expires - now, &itp->it_value); } else { @@ -1248,6 +1249,8 @@ static int do_cpu_nanosleep(const clockid_t which_clock, int flags, struct timespec *rqtp, struct itimerspec *it) { struct k_itimer timer; + struct timespec64 ts64; + struct itimerspec64 *it64; int error; /* @@ -1260,13 +1263,14 @@ static int do_cpu_nanosleep(const clockid_t which_clock, int flags, error = posix_cpu_timer_create(&timer); timer.it_process = current; if (!error) { - static struct itimerspec zero_it; + static struct itimerspec64 zero_it; memset(it, 0, sizeof *it); it->it_value = *rqtp; spin_lock_irq(&timer.it_lock); - error = posix_cpu_timer_set(&timer, flags, it, NULL); + *it64 = itimerspec_to_itimerspec64(it); + error = posix_cpu_timer_set(&timer, flags, it64, NULL); if (error) { spin_unlock_irq(&timer.it_lock); return error; @@ -1295,8 +1299,9 @@ static int do_cpu_nanosleep(const clockid_t which_clock, int flags, /* * We were interrupted by a signal. */ - sample_to_timespec(which_clock, timer.it.cpu.expires, rqtp); - error = posix_cpu_timer_set(&timer, 0, &zero_it, it); + sample_to_timespec64(which_clock, timer.it.cpu.expires, &ts64); + *rqtp = timespec64_to_timespec(ts64); + error = posix_cpu_timer_set(&timer, 0, &zero_it, it64); if (!error) { /* * Timer is now unarmed, deletion can not fail. @@ -1395,12 +1400,12 @@ static long posix_cpu_nsleep_restart(struct restart_block *restart_block) #define THREAD_CLOCK MAKE_THREAD_CPUCLOCK(0, CPUCLOCK_SCHED) static int process_cpu_clock_getres(const clockid_t which_clock, - struct timespec *tp) + struct timespec64 *tp) { return posix_cpu_clock_getres(PROCESS_CLOCK, tp); } static int process_cpu_clock_get(const clockid_t which_clock, - struct timespec *tp) + struct timespec64 *tp) { return posix_cpu_clock_get(PROCESS_CLOCK, tp); } @@ -1420,12 +1425,12 @@ static long process_cpu_nsleep_restart(struct restart_block *restart_block) return -EINVAL; } static int thread_cpu_clock_getres(const clockid_t which_clock, - struct timespec *tp) + struct timespec64 *tp) { return posix_cpu_clock_getres(THREAD_CLOCK, tp); } static int thread_cpu_clock_get(const clockid_t which_clock, - struct timespec *tp) + struct timespec64 *tp) { return posix_cpu_clock_get(THREAD_CLOCK, tp); } @@ -1436,37 +1441,37 @@ static int thread_cpu_timer_create(struct k_itimer *timer) } struct k_clock clock_posix_cpu = { - .clock_getres = posix_cpu_clock_getres, - .clock_set = posix_cpu_clock_set, - .clock_get = posix_cpu_clock_get, + .clock_getres64 = posix_cpu_clock_getres, + .clock_set64 = posix_cpu_clock_set, + .clock_get64 = posix_cpu_clock_get, .timer_create = posix_cpu_timer_create, .nsleep = posix_cpu_nsleep, .nsleep_restart = posix_cpu_nsleep_restart, - .timer_set = posix_cpu_timer_set, + .timer_set64 = posix_cpu_timer_set, .timer_del = posix_cpu_timer_del, - .timer_get = posix_cpu_timer_get, + .timer_get64 = posix_cpu_timer_get, }; static __init int init_posix_cpu_timers(void) { struct k_clock process = { - .clock_getres = process_cpu_clock_getres, - .clock_get = process_cpu_clock_get, + .clock_getres64 = process_cpu_clock_getres, + .clock_get64 = process_cpu_clock_get, .timer_create = process_cpu_timer_create, .nsleep = process_cpu_nsleep, .nsleep_restart = process_cpu_nsleep_restart, }; struct k_clock thread = { - .clock_getres = thread_cpu_clock_getres, - .clock_get = thread_cpu_clock_get, + .clock_getres64 = thread_cpu_clock_getres, + .clock_get64 = thread_cpu_clock_get, .timer_create = thread_cpu_timer_create, }; - struct timespec ts; + struct timespec64 ts; posix_timers_register_clock(CLOCK_PROCESS_CPUTIME_ID, &process); posix_timers_register_clock(CLOCK_THREAD_CPUTIME_ID, &thread); - cputime_to_timespec(cputime_one_jiffy, &ts); + cputime_to_timespec64(cputime_one_jiffy, &ts); onecputick = ts.tv_nsec; WARN_ON(ts.tv_sec != 0); -- 1.7.9.5

9 years, 7 months

[PATCH v2 13/15] cputime:Introduce the cputime_to_timespec64/timespec64_to_cputime function

by Baolin Wang

This patch introduces some functions for converting cputime to timespec64 and back, that repalce the timespec type with timespec64 type, as well as for arch/s390 and arch/powerpc architecture. And these new methods will replace the old cputime_to_timespec/timespec_to_cputime function to ready for 2038 issue. The cputime_to_timespec/timespec_to_cputime functions are moved to include/linux/cputime.h file for removing conveniently. Signed-off-by: Baolin Wang <baolin.wang(a)linaro.org> --- arch/powerpc/include/asm/cputime.h | 6 +++--- arch/s390/include/asm/cputime.h | 8 ++++---- include/asm-generic/cputime_jiffies.h | 10 +++++----- include/asm-generic/cputime_nsecs.h | 4 ++-- include/linux/cputime.h | 15 +++++++++++++++ 5 files changed, 29 insertions(+), 14 deletions(-) diff --git a/arch/powerpc/include/asm/cputime.h b/arch/powerpc/include/asm/cputime.h index e245255..5dda5c0 100644 --- a/arch/powerpc/include/asm/cputime.h +++ b/arch/powerpc/include/asm/cputime.h @@ -154,9 +154,9 @@ static inline cputime_t secs_to_cputime(const unsigned long sec) } /* - * Convert cputime <-> timespec + * Convert cputime <-> timespec64 */ -static inline void cputime_to_timespec(const cputime_t ct, struct timespec *p) +static inline void cputime_to_timespec64(const cputime_t ct, struct timespec64 *p) { u64 x = (__force u64) ct; unsigned int frac; @@ -168,7 +168,7 @@ static inline void cputime_to_timespec(const cputime_t ct, struct timespec *p) p->tv_nsec = x; } -static inline cputime_t timespec_to_cputime(const struct timespec *p) +static inline cputime_t timespec64_to_cputime(const struct timespec64 *p) { u64 ct; diff --git a/arch/s390/include/asm/cputime.h b/arch/s390/include/asm/cputime.h index b91e960..1266697 100644 --- a/arch/s390/include/asm/cputime.h +++ b/arch/s390/include/asm/cputime.h @@ -89,16 +89,16 @@ static inline cputime_t secs_to_cputime(const unsigned int s) } /* - * Convert cputime to timespec and back. + * Convert cputime to timespec64 and back. */ -static inline cputime_t timespec_to_cputime(const struct timespec *value) +static inline cputime_t timespec64_to_cputime(const struct timespec64 *value) { unsigned long long ret = value->tv_sec * CPUTIME_PER_SEC; return (__force cputime_t)(ret + __div(value->tv_nsec * CPUTIME_PER_USEC, NSEC_PER_USEC)); } -static inline void cputime_to_timespec(const cputime_t cputime, - struct timespec *value) +static inline void cputime_to_timespec64(const cputime_t cputime, + struct timespec64 *value) { unsigned long long __cputime = (__force unsigned long long) cputime; #ifndef CONFIG_64BIT diff --git a/include/asm-generic/cputime_jiffies.h b/include/asm-generic/cputime_jiffies.h index fe386fc..54e034c 100644 --- a/include/asm-generic/cputime_jiffies.h +++ b/include/asm-generic/cputime_jiffies.h @@ -44,12 +44,12 @@ typedef u64 __nocast cputime64_t; #define secs_to_cputime(sec) jiffies_to_cputime((sec) * HZ) /* - * Convert cputime to timespec and back. + * Convert cputime to timespec64 and back. */ -#define timespec_to_cputime(__val) \ - jiffies_to_cputime(timespec_to_jiffies(__val)) -#define cputime_to_timespec(__ct,__val) \ - jiffies_to_timespec(cputime_to_jiffies(__ct),__val) +#define timespec64_to_cputime(__val) \ + jiffies_to_cputime(timespec64_to_jiffies(__val)) +#define cputime_to_timespec64(__ct,__val) \ + jiffies_to_timespec64(cputime_to_jiffies(__ct),__val) /* * Convert cputime to timeval and back. diff --git a/include/asm-generic/cputime_nsecs.h b/include/asm-generic/cputime_nsecs.h index 0419485..65c875b 100644 --- a/include/asm-generic/cputime_nsecs.h +++ b/include/asm-generic/cputime_nsecs.h @@ -73,12 +73,12 @@ typedef u64 __nocast cputime64_t; /* * Convert cputime <-> timespec (nsec) */ -static inline cputime_t timespec_to_cputime(const struct timespec *val) +static inline cputime_t timespec64_to_cputime(const struct timespec64 *val) { u64 ret = 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) +static inline void cputime_to_timespec64(const cputime_t ct, struct timespec64 *val) { u32 rem; diff --git a/include/linux/cputime.h b/include/linux/cputime.h index f2eb2ee..f01896f 100644 --- a/include/linux/cputime.h +++ b/include/linux/cputime.h @@ -13,4 +13,19 @@ usecs_to_cputime((__nsecs) / NSEC_PER_USEC) #endif +static inline cputime_t timespec_to_cputime(const struct timespec *ts) +{ + struct timespec64 ts64 = timespec_to_timespec64(*ts); + return timespec64_to_cputime(&ts64); +} + +static inline void cputime_to_timespec(const cputime_t cputime, + struct timespec *value) +{ + struct timespec64 *ts64; + + *ts64 = timespec_to_timespec64(*value); + cputime_to_timespec64(cputime, ts64); +} + #endif /* __LINUX_CPUTIME_H */ -- 1.7.9.5

9 years, 7 months

[PATCH v2 12/15] time/time:Introduce the timespec64_to_jiffies/jiffies_to_timespec64 function

by Baolin Wang

This patch introduces the timespec64_to_jiffies() and jiffies_to_timespec64() functions, that implement the conversion between cputime and timespec64. And remove the old functions timespec64_to_jiffies()/jiffies_to_timespec64() to jiffies.h file. Signed-off-by: Baolin Wang <baolin.wang(a)linaro.org> --- include/linux/jiffies.h | 21 ++++++++++++++++++--- kernel/time/time.c | 12 ++++++------ 2 files changed, 24 insertions(+), 9 deletions(-) diff --git a/include/linux/jiffies.h b/include/linux/jiffies.h index c367cbd..16a30c1 100644 --- a/include/linux/jiffies.h +++ b/include/linux/jiffies.h @@ -290,9 +290,24 @@ static inline u64 jiffies_to_nsecs(const unsigned long j) extern unsigned long msecs_to_jiffies(const unsigned int m); extern unsigned long usecs_to_jiffies(const unsigned int u); -extern unsigned long timespec_to_jiffies(const struct timespec *value); -extern void jiffies_to_timespec(const unsigned long jiffies, - struct timespec *value); +extern unsigned long __timespec_to_jiffies(unsigned long sec, long nsec); +extern unsigned long timespec64_to_jiffies(const struct timespec64 *value); +extern void jiffies_to_timespec64(const unsigned long jiffies, + struct timespec64 *value); +static inline unsigned long timespec_to_jiffies(const struct timespec *value) +{ + return __timespec_to_jiffies(value->tv_sec, value->tv_nsec); +} + +static inline void jiffies_to_timespec(const unsigned long jiffies, + struct timespec *value) +{ + struct timespec64 *ts; + + *ts = timespec_to_timespec64(*value); + jiffies_to_timespec64(jiffies, ts); +} + extern unsigned long timeval_to_jiffies(const struct timeval *value); extern void jiffies_to_timeval(const unsigned long jiffies, struct timeval *value); diff --git a/kernel/time/time.c b/kernel/time/time.c index f43011b..3aba16f 100644 --- a/kernel/time/time.c +++ b/kernel/time/time.c @@ -571,7 +571,7 @@ EXPORT_SYMBOL(usecs_to_jiffies); * The >> (NSEC_JIFFIE_SC - SEC_JIFFIE_SC) converts the scaled nsec * value to a scaled second value. */ -static unsigned long +unsigned long __timespec_to_jiffies(unsigned long sec, long nsec) { nsec = nsec + TICK_NSEC - 1; @@ -585,17 +585,17 @@ __timespec_to_jiffies(unsigned long sec, long nsec) (NSEC_JIFFIE_SC - SEC_JIFFIE_SC))) >> SEC_JIFFIE_SC; } +EXPORT_SYMBOL(__timespec_to_jiffies); unsigned long -timespec_to_jiffies(const struct timespec *value) +timespec64_to_jiffies(const struct timespec64 *value) { return __timespec_to_jiffies(value->tv_sec, value->tv_nsec); } - -EXPORT_SYMBOL(timespec_to_jiffies); +EXPORT_SYMBOL(timespec64_to_jiffies); void -jiffies_to_timespec(const unsigned long jiffies, struct timespec *value) +jiffies_to_timespec64(const unsigned long jiffies, struct timespec64 *value) { /* * Convert jiffies to nanoseconds and separate with @@ -606,7 +606,7 @@ jiffies_to_timespec(const unsigned long jiffies, struct timespec *value) NSEC_PER_SEC, &rem); value->tv_nsec = rem; } -EXPORT_SYMBOL(jiffies_to_timespec); +EXPORT_SYMBOL(jiffies_to_timespec64); /* * We could use a similar algorithm to timespec_to_jiffies (with a -- 1.7.9.5

9 years, 7 months

[PATCH v2 11/15] time/posix-clock:Convert to the 64bit methods for k_clock and posix_clock_operations structure

by Baolin Wang

This patch converts the posix clock operations over to the new methods with timespec64/itimerspec64 type to making them ready for 2038, and it is based on the ptp patch series. And also changes to the 64bit methods for k_clock structure, that converts the timespec/itimerspec type to timespec64/itimerspec64 type. Signed-off-by: Baolin Wang <baolin.wang(a)linaro.org> --- drivers/ptp/ptp_clock.c | 26 ++++++++------------------ include/linux/posix-clock.h | 10 +++++----- kernel/time/posix-clock.c | 20 ++++++++++---------- 3 files changed, 23 insertions(+), 33 deletions(-) diff --git a/drivers/ptp/ptp_clock.c b/drivers/ptp/ptp_clock.c index bee8270..8c086e7 100644 --- a/drivers/ptp/ptp_clock.c +++ b/drivers/ptp/ptp_clock.c @@ -97,32 +97,24 @@ static s32 scaled_ppm_to_ppb(long ppm) /* posix clock implementation */ -static int ptp_clock_getres(struct posix_clock *pc, struct timespec *tp) +static int ptp_clock_getres(struct posix_clock *pc, struct timespec64 *tp) { tp->tv_sec = 0; tp->tv_nsec = 1; return 0; } -static int ptp_clock_settime(struct posix_clock *pc, const struct timespec *tp) +static int ptp_clock_settime(struct posix_clock *pc, + const struct timespec64 *tp) { struct ptp_clock *ptp = container_of(pc, struct ptp_clock, clock); - struct timespec64 ts = timespec_to_timespec64(*tp); - - return ptp->info->settime64(ptp->info, &ts); + return ptp->info->settime64(ptp->info, tp); } -static int ptp_clock_gettime(struct posix_clock *pc, struct timespec *tp) +static int ptp_clock_gettime(struct posix_clock *pc, struct timespec64 *tp) { struct ptp_clock *ptp = container_of(pc, struct ptp_clock, clock); - struct timespec64 ts; - int err; - - err = ptp->info->gettime64(ptp->info, &ts); - if (!err) - *tp = timespec64_to_timespec(ts); - - return err; + return ptp->info->gettime64(ptp->info, tp); } static int ptp_clock_adjtime(struct posix_clock *pc, struct timex *tx) @@ -134,8 +126,7 @@ static int ptp_clock_adjtime(struct posix_clock *pc, struct timex *tx) ops = ptp->info; if (tx->modes & ADJ_SETOFFSET) { - struct timespec ts; - ktime_t kt; + struct timespec64 ts; s64 delta; ts.tv_sec = tx->time.tv_sec; @@ -147,8 +138,7 @@ static int ptp_clock_adjtime(struct posix_clock *pc, struct timex *tx) if ((unsigned long) ts.tv_nsec >= NSEC_PER_SEC) return -EINVAL; - kt = timespec_to_ktime(ts); - delta = ktime_to_ns(kt); + delta = timespec64_to_ns(&ts); err = ops->adjtime(ops, delta); } else if (tx->modes & ADJ_FREQUENCY) { s32 ppb = scaled_ppm_to_ppb(tx->freq); diff --git a/include/linux/posix-clock.h b/include/linux/posix-clock.h index 34c4498..fd7e22c 100644 --- a/include/linux/posix-clock.h +++ b/include/linux/posix-clock.h @@ -59,23 +59,23 @@ struct posix_clock_operations { int (*clock_adjtime)(struct posix_clock *pc, struct timex *tx); - int (*clock_gettime)(struct posix_clock *pc, struct timespec *ts); + int (*clock_gettime)(struct posix_clock *pc, struct timespec64 *ts); - int (*clock_getres) (struct posix_clock *pc, struct timespec *ts); + int (*clock_getres)(struct posix_clock *pc, struct timespec64 *ts); int (*clock_settime)(struct posix_clock *pc, - const struct timespec *ts); + const struct timespec64 *ts); int (*timer_create) (struct posix_clock *pc, struct k_itimer *kit); int (*timer_delete) (struct posix_clock *pc, struct k_itimer *kit); void (*timer_gettime)(struct posix_clock *pc, - struct k_itimer *kit, struct itimerspec *tsp); + struct k_itimer *kit, struct itimerspec64 *tsp); int (*timer_settime)(struct posix_clock *pc, struct k_itimer *kit, int flags, - struct itimerspec *tsp, struct itimerspec *old); + struct itimerspec64 *tsp, struct itimerspec64 *old); /* * Optional character device methods: */ diff --git a/kernel/time/posix-clock.c b/kernel/time/posix-clock.c index ce033c7..e21e4c1 100644 --- a/kernel/time/posix-clock.c +++ b/kernel/time/posix-clock.c @@ -297,7 +297,7 @@ out: return err; } -static int pc_clock_gettime(clockid_t id, struct timespec *ts) +static int pc_clock_gettime(clockid_t id, struct timespec64 *ts) { struct posix_clock_desc cd; int err; @@ -316,7 +316,7 @@ static int pc_clock_gettime(clockid_t id, struct timespec *ts) return err; } -static int pc_clock_getres(clockid_t id, struct timespec *ts) +static int pc_clock_getres(clockid_t id, struct timespec64 *ts) { struct posix_clock_desc cd; int err; @@ -335,7 +335,7 @@ static int pc_clock_getres(clockid_t id, struct timespec *ts) return err; } -static int pc_clock_settime(clockid_t id, const struct timespec *ts) +static int pc_clock_settime(clockid_t id, const struct timespec64 *ts) { struct posix_clock_desc cd; int err; @@ -399,7 +399,7 @@ static int pc_timer_delete(struct k_itimer *kit) return err; } -static void pc_timer_gettime(struct k_itimer *kit, struct itimerspec *ts) +static void pc_timer_gettime(struct k_itimer *kit, struct itimerspec64 *ts) { clockid_t id = kit->it_clock; struct posix_clock_desc cd; @@ -414,7 +414,7 @@ static void pc_timer_gettime(struct k_itimer *kit, struct itimerspec *ts) } static int pc_timer_settime(struct k_itimer *kit, int flags, - struct itimerspec *ts, struct itimerspec *old) + struct itimerspec64 *ts, struct itimerspec64 *old) { clockid_t id = kit->it_clock; struct posix_clock_desc cd; @@ -435,12 +435,12 @@ static int pc_timer_settime(struct k_itimer *kit, int flags, } struct k_clock clock_posix_dynamic = { - .clock_getres = pc_clock_getres, - .clock_set = pc_clock_settime, - .clock_get = pc_clock_gettime, + .clock_getres64 = pc_clock_getres, + .clock_set64 = pc_clock_settime, + .clock_get64 = pc_clock_gettime, .clock_adj = pc_clock_adjtime, .timer_create = pc_timer_create, - .timer_set = pc_timer_settime, + .timer_set64 = pc_timer_settime, .timer_del = pc_timer_delete, - .timer_get = pc_timer_gettime, + .timer_get64 = pc_timer_gettime, }; -- 1.7.9.5

9 years, 7 months

[PATCH v2 10/15] time/alarmtimer:Convert to the new methods for k_clock structure

by Baolin Wang

This patch changes to the new methods with timespec64/itimerspec64 type of k_clock structure, and converts the timespec/itimerspec type to timespec64/itimerspec64 typein alarmtimer.c file. Signed-off-by: Baolin Wang <baolin.wang(a)linaro.org> --- kernel/time/alarmtimer.c | 43 ++++++++++++++++++++++--------------------- 1 file changed, 22 insertions(+), 21 deletions(-) diff --git a/kernel/time/alarmtimer.c b/kernel/time/alarmtimer.c index 1b001ed..68186e1 100644 --- a/kernel/time/alarmtimer.c +++ b/kernel/time/alarmtimer.c @@ -489,35 +489,36 @@ static enum alarmtimer_restart alarm_handle_timer(struct alarm *alarm, /** * alarm_clock_getres - posix getres interface * @which_clock: clockid - * @tp: timespec to fill + * @tp: timespec64 to fill * * Returns the granularity of underlying alarm base clock */ -static int alarm_clock_getres(const clockid_t which_clock, struct timespec *tp) +static int alarm_clock_getres(const clockid_t which_clock, + struct timespec64 *tp) { clockid_t baseid = alarm_bases[clock2alarm(which_clock)].base_clockid; if (!alarmtimer_get_rtcdev()) return -EINVAL; - return hrtimer_get_res(baseid, tp); + return hrtimer_get_res64(baseid, tp); } /** * alarm_clock_get - posix clock_get interface * @which_clock: clockid - * @tp: timespec to fill. + * @tp: timespec64 to fill. * * Provides the underlying alarm base time. */ -static int alarm_clock_get(clockid_t which_clock, struct timespec *tp) +static int alarm_clock_get(clockid_t which_clock, struct timespec64 *tp) { struct alarm_base *base = &alarm_bases[clock2alarm(which_clock)]; if (!alarmtimer_get_rtcdev()) return -EINVAL; - *tp = ktime_to_timespec(base->gettime()); + *tp = ktime_to_timespec64(base->gettime()); return 0; } @@ -547,24 +548,24 @@ static int alarm_timer_create(struct k_itimer *new_timer) /** * alarm_timer_get - posix timer_get interface * @new_timer: k_itimer pointer - * @cur_setting: itimerspec data to fill + * @cur_setting: itimerspec64 data to fill * * Copies out the current itimerspec data */ static void alarm_timer_get(struct k_itimer *timr, - struct itimerspec *cur_setting) + struct itimerspec64 *cur_setting) { ktime_t relative_expiry_time = alarm_expires_remaining(&(timr->it.alarm.alarmtimer)); if (ktime_to_ns(relative_expiry_time) > 0) { - cur_setting->it_value = ktime_to_timespec(relative_expiry_time); + cur_setting->it_value = ktime_to_timespec64(relative_expiry_time); } else { cur_setting->it_value.tv_sec = 0; cur_setting->it_value.tv_nsec = 0; } - cur_setting->it_interval = ktime_to_timespec(timr->it.alarm.interval); + cur_setting->it_interval = ktime_to_timespec64(timr->it.alarm.interval); } /** @@ -588,14 +589,14 @@ static int alarm_timer_del(struct k_itimer *timr) * alarm_timer_set - posix timer_set interface * @timr: k_itimer pointer to be deleted * @flags: timer flags - * @new_setting: itimerspec to be used - * @old_setting: itimerspec being replaced + * @new_setting: itimerspec64 to be used + * @old_setting: itimerspec64 being replaced * * Sets the timer to new_setting, and starts the timer. */ static int alarm_timer_set(struct k_itimer *timr, int flags, - struct itimerspec *new_setting, - struct itimerspec *old_setting) + struct itimerspec64 *new_setting, + struct itimerspec64 *old_setting) { ktime_t exp; @@ -613,8 +614,8 @@ static int alarm_timer_set(struct k_itimer *timr, int flags, return TIMER_RETRY; /* start the timer */ - timr->it.alarm.interval = timespec_to_ktime(new_setting->it_interval); - exp = timespec_to_ktime(new_setting->it_value); + timr->it.alarm.interval = timespec64_to_ktime(new_setting->it_interval); + exp = timespec64_to_ktime(new_setting->it_value); /* Convert (if necessary) to absolute time */ if (flags != TIMER_ABSTIME) { ktime_t now; @@ -670,7 +671,7 @@ static int alarmtimer_do_nsleep(struct alarm *alarm, ktime_t absexp) /** - * update_rmtp - Update remaining timespec value + * update_rmtp - Update remaining timespec64 value * @exp: expiration time * @type: timer type * @rmtp: user pointer to remaining timepsec value @@ -824,12 +825,12 @@ static int __init alarmtimer_init(void) int error = 0; int i; struct k_clock alarm_clock = { - .clock_getres = alarm_clock_getres, - .clock_get = alarm_clock_get, + .clock_getres64 = alarm_clock_getres, + .clock_get64 = alarm_clock_get, .timer_create = alarm_timer_create, - .timer_set = alarm_timer_set, + .timer_set64 = alarm_timer_set, .timer_del = alarm_timer_del, - .timer_get = alarm_timer_get, + .timer_get64 = alarm_timer_get, .nsleep = alarm_timer_nsleep, }; -- 1.7.9.5

9 years, 7 months

[PATCH v2 09/15] char/mmtimer:Convert to the 64bit methods for k_clock callback function

by Baolin Wang

This patch converts to the 64bit methods for k_clock callback function, that converts the timespec type to timespec64 type and converts the itimerspec type to itimerspec64 type. Signed-off-by: Baolin Wang <baolin.wang(a)linaro.org> --- drivers/char/mmtimer.c | 36 +++++++++++++++++------------------- 1 file changed, 17 insertions(+), 19 deletions(-) diff --git a/drivers/char/mmtimer.c b/drivers/char/mmtimer.c index 3d6c067..213d0bb 100644 --- a/drivers/char/mmtimer.c +++ b/drivers/char/mmtimer.c @@ -478,18 +478,18 @@ static int sgi_clock_period; static struct timespec sgi_clock_offset; static int sgi_clock_period; -static int sgi_clock_get(clockid_t clockid, struct timespec *tp) +static int sgi_clock_get(clockid_t clockid, struct timespec64 *tp) { u64 nsec; nsec = rtc_time() * sgi_clock_period + sgi_clock_offset.tv_nsec; - *tp = ns_to_timespec(nsec); + *tp = ns_to_timespec64(nsec); tp->tv_sec += sgi_clock_offset.tv_sec; return 0; }; -static int sgi_clock_set(const clockid_t clockid, const struct timespec *tp) +static int sgi_clock_set(const clockid_t clockid, const struct timespec64 *tp) { u64 nsec; @@ -657,7 +657,7 @@ static int sgi_timer_del(struct k_itimer *timr) } /* Assumption: it_lock is already held with irq's disabled */ -static void sgi_timer_get(struct k_itimer *timr, struct itimerspec *cur_setting) +static void sgi_timer_get(struct k_itimer *timr, struct itimerspec64 *cur_setting) { if (timr->it.mmtimer.clock == TIMER_OFF) { @@ -668,14 +668,14 @@ static void sgi_timer_get(struct k_itimer *timr, struct itimerspec *cur_setting) return; } - cur_setting->it_interval = ns_to_timespec(timr->it.mmtimer.incr * sgi_clock_period); - cur_setting->it_value = ns_to_timespec((timr->it.mmtimer.expires - rtc_time()) * sgi_clock_period); + cur_setting->it_interval = ns_to_timespec64(timr->it.mmtimer.incr * sgi_clock_period); + cur_setting->it_value = ns_to_timespec64((timr->it.mmtimer.expires - rtc_time()) * sgi_clock_period); } static int sgi_timer_set(struct k_itimer *timr, int flags, - struct itimerspec * new_setting, - struct itimerspec * old_setting) + struct itimerspec64 *new_setting, + struct itimerspec64 *old_setting) { unsigned long when, period, irqflags; int err = 0; @@ -687,8 +687,8 @@ static int sgi_timer_set(struct k_itimer *timr, int flags, sgi_timer_get(timr, old_setting); sgi_timer_del(timr); - when = timespec_to_ns(&new_setting->it_value); - period = timespec_to_ns(&new_setting->it_interval); + when = timespec64_to_ns(&new_setting->it_value); + period = timespec64_to_ns(&new_setting->it_interval); if (when == 0) /* Clear timer */ @@ -699,11 +699,9 @@ static int sgi_timer_set(struct k_itimer *timr, int flags, return -ENOMEM; if (flags & TIMER_ABSTIME) { - struct timespec n; unsigned long now; - getnstimeofday(&n); - now = timespec_to_ns(&n); + now = ktime_get_real_ns(); if (when > now) when -= now; else @@ -765,7 +763,7 @@ static int sgi_timer_set(struct k_itimer *timr, int flags, return err; } -static int sgi_clock_getres(const clockid_t which_clock, struct timespec *tp) +static int sgi_clock_getres(const clockid_t which_clock, struct timespec64 *tp) { tp->tv_sec = 0; tp->tv_nsec = sgi_clock_period; @@ -773,13 +771,13 @@ static int sgi_clock_getres(const clockid_t which_clock, struct timespec *tp) } static struct k_clock sgi_clock = { - .clock_set = sgi_clock_set, - .clock_get = sgi_clock_get, - .clock_getres = sgi_clock_getres, + .clock_set64 = sgi_clock_set, + .clock_get64 = sgi_clock_get, + .clock_getres64 = sgi_clock_getres, .timer_create = sgi_timer_create, - .timer_set = sgi_timer_set, + .timer_set64 = sgi_timer_set, .timer_del = sgi_timer_del, - .timer_get = sgi_timer_get + .timer_get64 = sgi_timer_get }; /** -- 1.7.9.5

9 years, 7 months

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