From d28ede83791defee9a81e558540699dc46dbbe13 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Wed, 16 Jul 2014 21:05:16 +0000 Subject: timekeeping: Create struct tk_read_base and use it in struct timekeeper The members of the new struct are the required ones for the new NMI safe accessor to clcok monotonic. In order to reuse the existing timekeeping code and to make the update of the fast NMI safe timekeepers a simple memcpy use the struct for the timekeeper as well and convert all users. Signed-off-by: Thomas Gleixner Cc: Peter Zijlstra Cc: Ingo Molnar Cc: Mathieu Desnoyers Signed-off-by: John Stultz --- arch/arm64/kernel/vdso.c | 10 +++++----- arch/s390/kernel/time.c | 16 ++++++++-------- arch/tile/kernel/time.c | 10 +++++----- arch/x86/kernel/vsyscall_gtod.c | 23 ++++++++++++----------- arch/x86/kvm/x86.c | 14 +++++++------- 5 files changed, 37 insertions(+), 36 deletions(-) (limited to 'arch') diff --git a/arch/arm64/kernel/vdso.c b/arch/arm64/kernel/vdso.c index 574672f001f7..8296f7f5f0ba 100644 --- a/arch/arm64/kernel/vdso.c +++ b/arch/arm64/kernel/vdso.c @@ -211,7 +211,7 @@ struct vm_area_struct *get_gate_vma(struct mm_struct *mm) void update_vsyscall(struct timekeeper *tk) { struct timespec xtime_coarse; - u32 use_syscall = strcmp(tk->clock->name, "arch_sys_counter"); + u32 use_syscall = strcmp(tk->tkr.clock->name, "arch_sys_counter"); ++vdso_data->tb_seq_count; smp_wmb(); @@ -224,11 +224,11 @@ void update_vsyscall(struct timekeeper *tk) vdso_data->wtm_clock_nsec = tk->wall_to_monotonic.tv_nsec; if (!use_syscall) { - vdso_data->cs_cycle_last = tk->cycle_last; + vdso_data->cs_cycle_last = tk->tkr.cycle_last; vdso_data->xtime_clock_sec = tk->xtime_sec; - vdso_data->xtime_clock_nsec = tk->xtime_nsec; - vdso_data->cs_mult = tk->mult; - vdso_data->cs_shift = tk->shift; + vdso_data->xtime_clock_nsec = tk->tkr.xtime_nsec; + vdso_data->cs_mult = tk->tkr.mult; + vdso_data->cs_shift = tk->tkr.shift; } smp_wmb(); diff --git a/arch/s390/kernel/time.c b/arch/s390/kernel/time.c index 97950f392613..4cef607f3711 100644 --- a/arch/s390/kernel/time.c +++ b/arch/s390/kernel/time.c @@ -214,26 +214,26 @@ void update_vsyscall(struct timekeeper *tk) { u64 nsecps; - if (tk->clock != &clocksource_tod) + if (tk->tkr.clock != &clocksource_tod) return; /* Make userspace gettimeofday spin until we're done. */ ++vdso_data->tb_update_count; smp_wmb(); - vdso_data->xtime_tod_stamp = tk->cycle_last; + vdso_data->xtime_tod_stamp = tk->tkr.cycle_last; vdso_data->xtime_clock_sec = tk->xtime_sec; - vdso_data->xtime_clock_nsec = tk->xtime_nsec; + vdso_data->xtime_clock_nsec = tk->tkr.xtime_nsec; vdso_data->wtom_clock_sec = tk->xtime_sec + tk->wall_to_monotonic.tv_sec; - vdso_data->wtom_clock_nsec = tk->xtime_nsec + - + ((u64) tk->wall_to_monotonic.tv_nsec << tk->shift); - nsecps = (u64) NSEC_PER_SEC << tk->shift; + vdso_data->wtom_clock_nsec = tk->tkr.xtime_nsec + + + ((u64) tk->wall_to_monotonic.tv_nsec << tk->tkr.shift); + nsecps = (u64) NSEC_PER_SEC << tk->tkr.shift; while (vdso_data->wtom_clock_nsec >= nsecps) { vdso_data->wtom_clock_nsec -= nsecps; vdso_data->wtom_clock_sec++; } - vdso_data->tk_mult = tk->mult; - vdso_data->tk_shift = tk->shift; + vdso_data->tk_mult = tk->tkr.mult; + vdso_data->tk_shift = tk->tkr.shift; smp_wmb(); ++vdso_data->tb_update_count; } diff --git a/arch/tile/kernel/time.c b/arch/tile/kernel/time.c index d22d5bfc1e4e..d8fbc289e680 100644 --- a/arch/tile/kernel/time.c +++ b/arch/tile/kernel/time.c @@ -261,7 +261,7 @@ void update_vsyscall_tz(void) void update_vsyscall(struct timekeeper *tk) { struct timespec *wtm = &tk->wall_to_monotonic; - struct clocksource *clock = tk->clock; + struct clocksource *clock = tk->tkr.clock; if (clock != &cycle_counter_cs) return; @@ -269,13 +269,13 @@ void update_vsyscall(struct timekeeper *tk) /* Userspace gettimeofday will spin while this value is odd. */ ++vdso_data->tb_update_count; smp_wmb(); - vdso_data->xtime_tod_stamp = tk->cycle_last; + vdso_data->xtime_tod_stamp = tk->tkr.cycle_last; vdso_data->xtime_clock_sec = tk->xtime_sec; - vdso_data->xtime_clock_nsec = tk->xtime_nsec; + vdso_data->xtime_clock_nsec = tk->tkr.xtime_nsec; vdso_data->wtom_clock_sec = wtm->tv_sec; vdso_data->wtom_clock_nsec = wtm->tv_nsec; - vdso_data->mult = tk->mult; - vdso_data->shift = tk->shift; + vdso_data->mult = tk->tkr.mult; + vdso_data->shift = tk->tkr.shift; smp_wmb(); ++vdso_data->tb_update_count; } diff --git a/arch/x86/kernel/vsyscall_gtod.c b/arch/x86/kernel/vsyscall_gtod.c index c3cb3c144591..c7d791f32b98 100644 --- a/arch/x86/kernel/vsyscall_gtod.c +++ b/arch/x86/kernel/vsyscall_gtod.c @@ -31,29 +31,30 @@ void update_vsyscall(struct timekeeper *tk) gtod_write_begin(vdata); /* copy vsyscall data */ - vdata->vclock_mode = tk->clock->archdata.vclock_mode; - vdata->cycle_last = tk->cycle_last; - vdata->mask = tk->clock->mask; - vdata->mult = tk->mult; - vdata->shift = tk->shift; + vdata->vclock_mode = tk->tkr.clock->archdata.vclock_mode; + vdata->cycle_last = tk->tkr.cycle_last; + vdata->mask = tk->tkr.mask; + vdata->mult = tk->tkr.mult; + vdata->shift = tk->tkr.shift; vdata->wall_time_sec = tk->xtime_sec; - vdata->wall_time_snsec = tk->xtime_nsec; + vdata->wall_time_snsec = tk->tkr.xtime_nsec; vdata->monotonic_time_sec = tk->xtime_sec + tk->wall_to_monotonic.tv_sec; - vdata->monotonic_time_snsec = tk->xtime_nsec + vdata->monotonic_time_snsec = tk->tkr.xtime_nsec + ((u64)tk->wall_to_monotonic.tv_nsec - << tk->shift); + << tk->tkr.shift); while (vdata->monotonic_time_snsec >= - (((u64)NSEC_PER_SEC) << tk->shift)) { + (((u64)NSEC_PER_SEC) << tk->tkr.shift)) { vdata->monotonic_time_snsec -= - ((u64)NSEC_PER_SEC) << tk->shift; + ((u64)NSEC_PER_SEC) << tk->tkr.shift; vdata->monotonic_time_sec++; } vdata->wall_time_coarse_sec = tk->xtime_sec; - vdata->wall_time_coarse_nsec = (long)(tk->xtime_nsec >> tk->shift); + vdata->wall_time_coarse_nsec = (long)(tk->tkr.xtime_nsec >> + tk->tkr.shift); vdata->monotonic_time_coarse_sec = vdata->wall_time_coarse_sec + tk->wall_to_monotonic.tv_sec; diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 7b25125f3f42..b7e57946d1c1 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -995,19 +995,19 @@ static void update_pvclock_gtod(struct timekeeper *tk) struct pvclock_gtod_data *vdata = &pvclock_gtod_data; u64 boot_ns; - boot_ns = ktime_to_ns(ktime_add(tk->base_mono, tk->offs_boot)); + boot_ns = ktime_to_ns(ktime_add(tk->tkr.base_mono, tk->offs_boot)); write_seqcount_begin(&vdata->seq); /* copy pvclock gtod data */ - vdata->clock.vclock_mode = tk->clock->archdata.vclock_mode; - vdata->clock.cycle_last = tk->cycle_last; - vdata->clock.mask = tk->clock->mask; - vdata->clock.mult = tk->mult; - vdata->clock.shift = tk->shift; + vdata->clock.vclock_mode = tk->tkr.clock->archdata.vclock_mode; + vdata->clock.cycle_last = tk->tkr.cycle_last; + vdata->clock.mask = tk->tkr.mask; + vdata->clock.mult = tk->tkr.mult; + vdata->clock.shift = tk->tkr.shift; vdata->boot_ns = boot_ns; - vdata->nsec_base = tk->xtime_nsec; + vdata->nsec_base = tk->tkr.xtime_nsec; write_seqcount_end(&vdata->seq); } -- cgit v1.2.2