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authorThomas Gleixner <tglx@linutronix.de>2016-03-03 11:11:12 +0100
committerThomas Gleixner <tglx@linutronix.de>2016-03-03 11:11:12 +0100
commit82e88ff1ea948d83125a8aaa7c9809f03ccc500f (patch)
treeba7c29a33f0fca76abc6f04ee7c3aa62bfa26236 /kernel/time
parent232d26373d310a941ef2ab46e53ea62fe076ed13 (diff)
downloadlinux-82e88ff1ea948d83125a8aaa7c9809f03ccc500f.tar.gz
hrtimer: Revert CLOCK_MONOTONIC_RAW support
Revert commits:
a6e707ddbdf1: KVM: arm/arm64: timer: Switch to CLOCK_MONOTONIC_RAW
9006a01829a5: hrtimer: Catch illegal clockids
9c808765e88e: hrtimer: Add support for CLOCK_MONOTONIC_RAW

Marc found out, that there are fundamental issues with that patch series
because __hrtimer_get_next_event() and hrtimer_forward() need support for
CLOCK_MONOTONIC_RAW. Nothing which is easily fixed, so revert the whole lot.

Reported-by: Marc Zyngier <marc.zyngier@arm.com>
Link: http://lkml.kernel.org/r/56D6CEF0.8060607@arm.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'kernel/time')
-rw-r--r--kernel/time/hrtimer.c18
1 files changed, 2 insertions, 16 deletions
diff --git a/kernel/time/hrtimer.c b/kernel/time/hrtimer.c
index cb0fe70f3c51..435b8850dd80 100644
--- a/kernel/time/hrtimer.c
+++ b/kernel/time/hrtimer.c
@@ -90,30 +90,19 @@ DEFINE_PER_CPU(struct hrtimer_cpu_base, hrtimer_bases) =
 			.clockid = CLOCK_TAI,
 			.get_time = &ktime_get_clocktai,
 		},
-		{
-			.index = HRTIMER_BASE_MONOTONIC_RAW,
-			.clockid = CLOCK_MONOTONIC_RAW,
-			.get_time = &ktime_get_raw,
-		},
 	}
 };
 
 static const int hrtimer_clock_to_base_table[MAX_CLOCKS] = {
-	/* Make sure we catch unsupported clockids */
-	[0 ... MAX_CLOCKS - 1]	= HRTIMER_MAX_CLOCK_BASES,
-
 	[CLOCK_REALTIME]	= HRTIMER_BASE_REALTIME,
 	[CLOCK_MONOTONIC]	= HRTIMER_BASE_MONOTONIC,
-	[CLOCK_MONOTONIC_RAW]	= HRTIMER_BASE_MONOTONIC_RAW,
 	[CLOCK_BOOTTIME]	= HRTIMER_BASE_BOOTTIME,
 	[CLOCK_TAI]		= HRTIMER_BASE_TAI,
 };
 
 static inline int hrtimer_clockid_to_base(clockid_t clock_id)
 {
-	int base = hrtimer_clock_to_base_table[clock_id];
-	BUG_ON(base == HRTIMER_MAX_CLOCK_BASES);
-	return base;
+	return hrtimer_clock_to_base_table[clock_id];
 }
 
 /*
@@ -1279,10 +1268,7 @@ static void __hrtimer_run_queues(struct hrtimer_cpu_base *cpu_base, ktime_t now)
 		if (!(active & 0x01))
 			continue;
 
-		if (unlikely(base->index == HRTIMER_BASE_MONOTONIC_RAW))
-			basenow = ktime_get_raw();
-		else
-			basenow = ktime_add(now, base->offset);
+		basenow = ktime_add(now, base->offset);
 
 		while ((node = timerqueue_getnext(&base->active))) {
 			struct hrtimer *timer;