From 42f42da41b54c191ae6a775e84a86c100d66c5e8 Mon Sep 17 00:00:00 2001 From: Anna-Maria Gleixner Date: Thu, 21 Dec 2017 11:41:58 +0100 Subject: hrtimer: Implement SOFT/HARD clock base selection All prerequisites to handle hrtimers for expiry in either hard or soft interrupt context are in place. Add the missing bit in hrtimer_init() which associates the timer to the hard or the softirq clock base. Signed-off-by: Anna-Maria Gleixner Cc: Christoph Hellwig Cc: John Stultz Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: keescook@chromium.org Link: http://lkml.kernel.org/r/20171221104205.7269-30-anna-maria@linutronix.de Signed-off-by: Ingo Molnar --- kernel/time/hrtimer.c | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-) (limited to 'kernel') diff --git a/kernel/time/hrtimer.c b/kernel/time/hrtimer.c index d93e3e745592..3d201582630d 100644 --- a/kernel/time/hrtimer.c +++ b/kernel/time/hrtimer.c @@ -1220,8 +1220,9 @@ static inline int hrtimer_clockid_to_base(clockid_t clock_id) static void __hrtimer_init(struct hrtimer *timer, clockid_t clock_id, enum hrtimer_mode mode) { + bool softtimer = !!(mode & HRTIMER_MODE_SOFT); + int base = softtimer ? HRTIMER_MAX_CLOCK_BASES / 2 : 0; struct hrtimer_cpu_base *cpu_base; - int base; memset(timer, 0, sizeof(struct hrtimer)); @@ -1235,7 +1236,8 @@ static void __hrtimer_init(struct hrtimer *timer, clockid_t clock_id, if (clock_id == CLOCK_REALTIME && mode & HRTIMER_MODE_REL) clock_id = CLOCK_MONOTONIC; - base = hrtimer_clockid_to_base(clock_id); + base += hrtimer_clockid_to_base(clock_id); + timer->is_soft = softtimer; timer->base = &cpu_base->clock_base[base]; timerqueue_init(&timer->node); } @@ -1244,8 +1246,13 @@ static void __hrtimer_init(struct hrtimer *timer, clockid_t clock_id, * hrtimer_init - initialize a timer to the given clock * @timer: the timer to be initialized * @clock_id: the clock to be used - * @mode: timer mode: absolute (HRTIMER_MODE_ABS) or - * relative (HRTIMER_MODE_REL); pinned is not considered here! + * @mode: The modes which are relevant for intitialization: + * HRTIMER_MODE_ABS, HRTIMER_MODE_REL, HRTIMER_MODE_ABS_SOFT, + * HRTIMER_MODE_REL_SOFT + * + * The PINNED variants of the above can be handed in, + * but the PINNED bit is ignored as pinning happens + * when the hrtimer is started */ void hrtimer_init(struct hrtimer *timer, clockid_t clock_id, enum hrtimer_mode mode) -- cgit v1.2.3