patches/0018-hrtimer-Enable-soft-and-hard-hrtimer.patch

From: Anna-Maria Gleixner <anna-maria@linutronix.de>
Date: Thu, 31 Aug 2017 11:03:09 +0000
Subject: [PATCH 18/25] hrtimer: Enable soft and hard hrtimer

Move the definition of the clock ids, to be available not only
internal. The transition between clock id and hrtimer base is now
expanded by the soft hrtimer bases and the corresponding clock
ids. Update all hard hrtimer restricted queries to handle soft and
hard hrtimers similarly.

Signed-off-by: Anna-Maria Gleixner <anna-maria@linutronix.de>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
---
 include/linux/hrtimer.h |   11 +++++++++++
 kernel/time/hrtimer.c   |   22 +++++++---------------
 2 files changed, 18 insertions(+), 15 deletions(-)

--- a/include/linux/hrtimer.h
+++ b/include/linux/hrtimer.h
@@ -23,6 +23,17 @@
 #include <linux/timer.h>
 #include <linux/timerqueue.h>
 
+/*
+ * Clock ids for hrtimers which expire in softirq context. These clock ids
+ * are kernel internal and never exported to user space.
+ */
+#define HRTIMER_BASE_SOFT_MASK	MAX_CLOCKS
+
+#define CLOCK_REALTIME_SOFT	(CLOCK_REALTIME	 | HRTIMER_BASE_SOFT_MASK)
+#define CLOCK_MONOTONIC_SOFT	(CLOCK_MONOTONIC | HRTIMER_BASE_SOFT_MASK)
+#define CLOCK_BOOTTIME_SOFT	(CLOCK_BOOTTIME	 | HRTIMER_BASE_SOFT_MASK)
+#define CLOCK_TAI_SOFT		(CLOCK_TAI	 | HRTIMER_BASE_SOFT_MASK)
+
 struct hrtimer_clock_base;
 struct hrtimer_cpu_base;
 
--- a/kernel/time/hrtimer.c
+++ b/kernel/time/hrtimer.c
@@ -59,18 +59,6 @@
 #include "tick-internal.h"
 
 /*
- * Clock ids for timers which expire in softirq context. These clock ids
- * are kernel internal and never exported to user space. Kept internal
- * until the rest of the functionality is in place.
- */
-#define HRTIMER_BASE_SOFT_MASK	MAX_CLOCKS
-
-#define CLOCK_REALTIME_SOFT	(CLOCK_REALTIME	 | HRTIMER_BASE_SOFT_MASK)
-#define CLOCK_MONOTONIC_SOFT	(CLOCK_MONOTONIC | HRTIMER_BASE_SOFT_MASK)
-#define CLOCK_BOOTTIME_SOFT	(CLOCK_BOOTTIME	 | HRTIMER_BASE_SOFT_MASK)
-#define CLOCK_TAI_SOFT		(CLOCK_TAI	 | HRTIMER_BASE_SOFT_MASK)
-
-/*
  * Masks for selecting the soft and hard context timers from
  * cpu_base->active
  */
@@ -1172,7 +1160,7 @@ u64 hrtimer_get_next_event(void)
 
 static inline int hrtimer_clockid_to_base(clockid_t clock_id)
 {
-	if (likely(clock_id < MAX_CLOCKS)) {
+	if (likely(clock_id < MAX_CLOCKS_HRT)) {
 		int base = hrtimer_clock_to_base_table[clock_id];
 
 		if (likely(base != HRTIMER_MAX_CLOCK_BASES))
@@ -1192,8 +1180,12 @@ static void __hrtimer_init(struct hrtime
 
 	cpu_base = raw_cpu_ptr(&hrtimer_bases);
 
-	if (clock_id == CLOCK_REALTIME && mode != HRTIMER_MODE_ABS)
-		clock_id = CLOCK_MONOTONIC;
+	if (mode != HRTIMER_MODE_ABS) {
+		if (clock_id == CLOCK_REALTIME)
+			clock_id = CLOCK_MONOTONIC;
+		else if (clock_id == CLOCK_REALTIME_SOFT)
+			clock_id = CLOCK_MONOTONIC_SOFT;
+	}
 
 	base = hrtimer_clockid_to_base(clock_id);
 	timer->base = &cpu_base->clock_base[base];