diff options
| -rw-r--r-- | arch/i386/kernel/hpet.c | 2 | ||||
| -rw-r--r-- | arch/i386/kernel/tsc.c | 7 | ||||
| -rw-r--r-- | arch/i386/kernel/vmitime.c | 2 | ||||
| -rw-r--r-- | drivers/clocksource/acpi_pm.c | 3 | ||||
| -rw-r--r-- | drivers/clocksource/cyclone.c | 2 | ||||
| -rw-r--r-- | drivers/clocksource/scx200_hrt.c | 2 | ||||
| -rw-r--r-- | include/linux/clocksource.h | 10 | ||||
| -rw-r--r-- | kernel/time/jiffies.c | 1 | ||||
| -rw-r--r-- | kernel/timer.c | 2 |
9 files changed, 20 insertions, 11 deletions
diff --git a/arch/i386/kernel/hpet.c b/arch/i386/kernel/hpet.c index 0b29d41322a..7d2739fff3a 100644 --- a/arch/i386/kernel/hpet.c +++ b/arch/i386/kernel/hpet.c @@ -26,7 +26,7 @@ static struct clocksource clocksource_hpet = { .mask = HPET_MASK, .mult = 0, /* set below */ .shift = HPET_SHIFT, - .is_continuous = 1, + .flags = CLOCK_SOURCE_IS_CONTINUOUS, }; static int __init init_hpet_clocksource(void) diff --git a/arch/i386/kernel/tsc.c b/arch/i386/kernel/tsc.c index 0fd93107ff9..a3765499178 100644 --- a/arch/i386/kernel/tsc.c +++ b/arch/i386/kernel/tsc.c @@ -314,7 +314,8 @@ static struct clocksource clocksource_tsc = { .mult = 0, /* to be set */ .shift = 22, .update_callback = tsc_update_callback, - .is_continuous = 1, + .flags = CLOCK_SOURCE_IS_CONTINUOUS | + CLOCK_SOURCE_MUST_VERIFY, }; static int tsc_update_callback(void) @@ -434,8 +435,10 @@ static int __init init_tsc_clocksource(void) clocksource_tsc.mult = clocksource_khz2mult(current_tsc_khz, clocksource_tsc.shift); /* lower the rating if we already know its unstable: */ - if (check_tsc_unstable()) + if (check_tsc_unstable()) { clocksource_tsc.rating = 0; + clocksource_tsc.flags &= ~CLOCK_SOURCE_IS_CONTINUOUS; + } init_timer(&verify_tsc_freq_timer); verify_tsc_freq_timer.function = verify_tsc_freq; diff --git a/arch/i386/kernel/vmitime.c b/arch/i386/kernel/vmitime.c index 2e2d8dbcbd6..76d2adcae5a 100644 --- a/arch/i386/kernel/vmitime.c +++ b/arch/i386/kernel/vmitime.c @@ -115,7 +115,7 @@ static struct clocksource clocksource_vmi = { .mask = CLOCKSOURCE_MASK(64), .mult = 0, /* to be set */ .shift = 22, - .is_continuous = 1, + .flags = CLOCK_SOURCE_IS_CONTINUOUS, }; diff --git a/drivers/clocksource/acpi_pm.c b/drivers/clocksource/acpi_pm.c index b6bcdbbf57b..c7276a61695 100644 --- a/drivers/clocksource/acpi_pm.c +++ b/drivers/clocksource/acpi_pm.c @@ -72,7 +72,8 @@ static struct clocksource clocksource_acpi_pm = { .mask = (cycle_t)ACPI_PM_MASK, .mult = 0, /*to be caluclated*/ .shift = 22, - .is_continuous = 1, + .flags = CLOCK_SOURCE_IS_CONTINUOUS, + }; diff --git a/drivers/clocksource/cyclone.c b/drivers/clocksource/cyclone.c index bf4d3d50d1c..4f3925ceb36 100644 --- a/drivers/clocksource/cyclone.c +++ b/drivers/clocksource/cyclone.c @@ -31,7 +31,7 @@ static struct clocksource clocksource_cyclone = { .mask = CYCLONE_TIMER_MASK, .mult = 10, .shift = 0, - .is_continuous = 1, + .flags = CLOCK_SOURCE_IS_CONTINUOUS, }; static int __init init_cyclone_clocksource(void) diff --git a/drivers/clocksource/scx200_hrt.c b/drivers/clocksource/scx200_hrt.c index 22915cc46ba..b92da677aa5 100644 --- a/drivers/clocksource/scx200_hrt.c +++ b/drivers/clocksource/scx200_hrt.c @@ -57,7 +57,7 @@ static struct clocksource cs_hrt = { .rating = 250, .read = read_hrt, .mask = CLOCKSOURCE_MASK(32), - .is_continuous = 1, + .flags = CLOCK_SOURCE_IS_CONTINUOUS, /* mult, shift are set based on mhz27 flag */ }; diff --git a/include/linux/clocksource.h b/include/linux/clocksource.h index 55d71405237..45b0c310ae8 100644 --- a/include/linux/clocksource.h +++ b/include/linux/clocksource.h @@ -45,7 +45,7 @@ typedef u64 cycle_t; * @mult: cycle to nanosecond multiplier * @shift: cycle to nanosecond divisor (power of two) * @update_callback: called when safe to alter clocksource values - * @is_continuous: defines if clocksource is free-running. + * @flags: flags describing special properties * @cycle_interval: Used internally by timekeeping core, please ignore. * @xtime_interval: Used internally by timekeeping core, please ignore. */ @@ -58,7 +58,7 @@ struct clocksource { u32 mult; u32 shift; int (*update_callback)(void); - int is_continuous; + unsigned long flags; /* timekeeping specific data, ignore */ cycle_t cycle_last, cycle_interval; @@ -66,6 +66,12 @@ struct clocksource { s64 error; }; +/* + * Clock source flags bits:: + */ +#define CLOCK_SOURCE_IS_CONTINUOUS 0x01 +#define CLOCK_SOURCE_MUST_VERIFY 0x02 + /* simplify initialization of mask field */ #define CLOCKSOURCE_MASK(bits) (cycle_t)(bits<64 ? ((1ULL<<bits)-1) : -1) diff --git a/kernel/time/jiffies.c b/kernel/time/jiffies.c index a99b2a6e6a0..3be8da8fed7 100644 --- a/kernel/time/jiffies.c +++ b/kernel/time/jiffies.c @@ -62,7 +62,6 @@ struct clocksource clocksource_jiffies = { .mask = 0xffffffff, /*32bits*/ .mult = NSEC_PER_JIFFY << JIFFIES_SHIFT, /* details above */ .shift = JIFFIES_SHIFT, - .is_continuous = 0, /* tick based, not free running */ }; static int __init init_jiffies_clocksource(void) diff --git a/kernel/timer.c b/kernel/timer.c index 8f4bf1e6a3e..1144ff2c2ea 100644 --- a/kernel/timer.c +++ b/kernel/timer.c @@ -871,7 +871,7 @@ int timekeeping_is_continuous(void) do { seq = read_seqbegin(&xtime_lock); - ret = clock->is_continuous; + ret = clock->flags & CLOCK_SOURCE_IS_CONTINUOUS; } while (read_seqretry(&xtime_lock, seq)); |