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From: Thomas Gleixner <tglx@linutronix.de>
To: LKML <linux-kernel@vger.kernel.org>
Cc: Linus Torvalds <torvalds@linuxfoundation.org>,
	Ingo Molnar <mingo@kernel.org>,
	Peter Zijlstra <peterz@infradead.org>,
	Steven Rostedt <rostedt@goodmis.org>,
	John Stultz <john.stultz@linaro.org>,
	Petr Mladek <pmladek@suse.com>,
	Mark Salyzyn <salyzyn@android.com>,
	Prarit Bhargava <prarit@redhat.com>,
	Sergey Senozhatsky <sergey.senozhatsky@gmail.com>,
	Dmitry Torokhov <dmitry.torokhov@gmail.com>,
	Kevin Easton <kevin@guarana.org>,
	Michael Kerrisk <mtk.manpages@gmail.com>,
	Jonathan Corbet <corbet@lwn.net>
Subject: [RFC/RFT patch 5/7] posix-timers: Conflate clock MONOTONIC and BOOTTIME
Date: Thu, 01 Mar 2018 17:33:36 +0100	[thread overview]
Message-ID: <20180301165150.315745557@linutronix.de> (raw)
In-Reply-To: 20180301163331.987775783@linutronix.de

[-- Attachment #1: posix-timers--Conflate-clock-MONOTONIC-and-BOOTTIME.patch --]
[-- Type: text/plain, Size: 1880 bytes --]

Now that clock MONOTONIC and BOOTTIME are indentical remove all the special
casing. The user space visible interfaces still support both clocks.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
 kernel/time/posix-timers.c |   23 +----------------------
 1 file changed, 1 insertion(+), 22 deletions(-)

--- a/kernel/time/posix-timers.c
+++ b/kernel/time/posix-timers.c
@@ -251,12 +251,6 @@ static int posix_get_coarse_res(const cl
 	return 0;
 }
 
-static int posix_get_boottime(const clockid_t which_clock, struct timespec64 *tp)
-{
-	get_monotonic_boottime64(tp);
-	return 0;
-}
-
 static int posix_get_tai(clockid_t which_clock, struct timespec64 *tp)
 {
 	timekeeping_clocktai64(tp);
@@ -1322,21 +1316,6 @@ static const struct k_clock clock_tai =
 	.timer_arm		= common_hrtimer_arm,
 };
 
-static const struct k_clock clock_boottime = {
-	.clock_getres		= posix_get_hrtimer_res,
-	.clock_get		= posix_get_boottime,
-	.nsleep			= common_nsleep,
-	.timer_create		= common_timer_create,
-	.timer_set		= common_timer_set,
-	.timer_get		= common_timer_get,
-	.timer_del		= common_timer_del,
-	.timer_rearm		= common_hrtimer_rearm,
-	.timer_forward		= common_hrtimer_forward,
-	.timer_remaining	= common_hrtimer_remaining,
-	.timer_try_to_cancel	= common_hrtimer_try_to_cancel,
-	.timer_arm		= common_hrtimer_arm,
-};
-
 static const struct k_clock clock_monotonic_active = {
 	.clock_getres		= posix_get_hrtimer_res,
 	.clock_get		= posix_get_monotonic_active,
@@ -1350,7 +1329,7 @@ static const struct k_clock * const posi
 	[CLOCK_MONOTONIC_RAW]		= &clock_monotonic_raw,
 	[CLOCK_REALTIME_COARSE]		= &clock_realtime_coarse,
 	[CLOCK_MONOTONIC_COARSE]	= &clock_monotonic_coarse,
-	[CLOCK_BOOTTIME]		= &clock_boottime,
+	[CLOCK_BOOTTIME]		= &clock_monotonic,
 	[CLOCK_REALTIME_ALARM]		= &alarm_clock,
 	[CLOCK_BOOTTIME_ALARM]		= &alarm_clock,
 	[CLOCK_TAI]			= &clock_tai,

  parent reply	other threads:[~2018-03-01 16:52 UTC|newest]

Thread overview: 40+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-03-01 16:33 [RFC/RFT patch 0/7] timekeeping: Unify clock MONOTONIC and clock BOOTTIME Thomas Gleixner
2018-03-01 16:33 ` [RFC/RFT patch 1/7] timekeeping: Provide CLOCK_MONOTONIC_ACTIVE Thomas Gleixner
2018-03-13  7:06   ` [tip:timers/core] timekeeping: Add the new CLOCK_MONOTONIC_ACTIVE clock tip-bot for Thomas Gleixner
2018-03-01 16:33 ` [RFC/RFT patch 2/7] timekeeping: Make clock MONOTONIC behave like clock BOOTTIME Thomas Gleixner
2018-03-13  7:07   ` [tip:timers/core] timekeeping: Make the MONOTONIC clock behave like the BOOTTIME clock tip-bot for Thomas Gleixner
2018-03-01 16:33 ` [RFC/RFT patch 3/7] Input: evdev - Conflate clock MONOTONIC and BOOTTIME Thomas Gleixner
2018-03-13  7:07   ` [tip:timers/core] Input: Evdev - unify MONOTONIC and BOOTTIME clock behavior tip-bot for Thomas Gleixner
2018-03-01 16:33 ` [RFC/RFT patch 4/7] timekeeping: Remove boot time specific code Thomas Gleixner
2018-03-13  7:08   ` [tip:timers/core] " tip-bot for Thomas Gleixner
2018-03-01 16:33 ` Thomas Gleixner [this message]
2018-03-13  7:08   ` [tip:timers/core] posix-timers: Unify MONOTONIC and BOOTTIME clock behavior tip-bot for Thomas Gleixner
2018-03-01 16:33 ` [RFC/RFT patch 6/7] hrtimer: Conflate clock MONOTONIC and BOOTTIME Thomas Gleixner
2018-03-13  7:09   ` [tip:timers/core] hrtimer: Unify MONOTONIC and BOOTTIME clock behavior tip-bot for Thomas Gleixner
2018-03-01 16:33 ` [RFC/RFT patch 7/7] tracing: Conflate boot and monotonic clock Thomas Gleixner
2018-03-13  7:09   ` [tip:timers/core] tracing: Unify the "boot" and "mono" tracing clocks tip-bot for Thomas Gleixner
2018-03-01 17:23 ` [RFC/RFT patch 0/7] timekeeping: Unify clock MONOTONIC and clock BOOTTIME Linus Torvalds
2018-03-01 18:41   ` Thomas Gleixner
2018-03-01 18:50     ` Steven Rostedt
2018-03-01 19:10     ` Thomas Gleixner
2018-03-13  6:36   ` Ingo Molnar
2018-03-13 18:11     ` John Stultz
2018-04-20  4:37       ` David Herrmann
2018-04-20  5:44         ` Sergey Senozhatsky
2018-04-20  6:49           ` David Herrmann
2018-04-24  0:40             ` Genki Sky
2018-04-24  2:45               ` Genki Sky
2018-04-24  3:03                 ` John Stultz
2018-04-24  8:09                   ` Thomas Gleixner
2018-04-24 12:11                     ` Genki Sky
2018-04-24 15:00                       ` Thomas Gleixner
2018-04-25  6:50                     ` Pavel Machek
2018-04-25  8:55                       ` Rafael J. Wysocki
2018-04-25  8:52                     ` Rafael J. Wysocki
2018-04-25  9:49                       ` Rafael J. Wysocki
2018-04-25 13:03                         ` Thomas Gleixner
2018-04-26  7:03                           ` Mike Galbraith
2018-04-26  7:42                             ` Thomas Gleixner
2018-04-26  8:36                               ` Rafael J. Wysocki
2018-04-26  8:51                                 ` Thomas Gleixner
2018-04-26  9:03                                   ` Rafael J. Wysocki

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