From: Dmitry Safonov <dima@arista.com>
To: linux-kernel@vger.kernel.org
Cc: Dmitry Safonov <0x7f454c46@gmail.com>,
Andrei Vagin <avagin@gmail.com>, Dmitry Safonov <dima@arista.com>,
Adrian Reber <adrian@lisas.de>, Andrei Vagin <avagin@openvz.org>,
Andy Lutomirski <luto@kernel.org>, Arnd Bergmann <arnd@arndb.de>,
Christian Brauner <christian.brauner@ubuntu.com>,
Cyrill Gorcunov <gorcunov@openvz.org>,
"Eric W. Biederman" <ebiederm@xmission.com>,
"H. Peter Anvin" <hpa@zytor.com>, Ingo Molnar <mingo@redhat.com>,
Jann Horn <jannh@google.com>, Jeff Dike <jdike@addtoit.com>,
Oleg Nesterov <oleg@redhat.com>,
Pavel Emelyanov <xemul@virtuozzo.com>,
Shuah Khan <shuah@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Vincenzo Frascino <vincenzo.frascino@arm.com>,
containers@lists.linux-foundation.org, criu@openvz.org,
linux-api@vger.kernel.org, x86@kernel.org
Subject: [PATCHv6 08/36] posix-timers: Use clock_get_ktime() in common_timer_get()
Date: Thu, 15 Aug 2019 17:38:08 +0100 [thread overview]
Message-ID: <20190815163836.2927-9-dima@arista.com> (raw)
In-Reply-To: <20190815163836.2927-1-dima@arista.com>
From: Andrei Vagin <avagin@gmail.com>
Now, when the clock_get_ktime() callback exists, the suboptimal
timespec64-based conversion can be removed from common_timer_get().
Suggested-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrei Vagin <avagin@gmail.com>
Co-developed-by: Dmitry Safonov <dima@arista.com>
Signed-off-by: Dmitry Safonov <dima@arista.com>
---
kernel/time/posix-timers.c | 8 +-------
1 file changed, 1 insertion(+), 7 deletions(-)
diff --git a/kernel/time/posix-timers.c b/kernel/time/posix-timers.c
index 7cf1216050d1..1d41c6a41d63 100644
--- a/kernel/time/posix-timers.c
+++ b/kernel/time/posix-timers.c
@@ -665,7 +665,6 @@ void common_timer_get(struct k_itimer *timr, struct itimerspec64 *cur_setting)
{
const struct k_clock *kc = timr->kclock;
ktime_t now, remaining, iv;
- struct timespec64 ts64;
bool sig_none;
sig_none = timr->it_sigev_notify == SIGEV_NONE;
@@ -683,12 +682,7 @@ void common_timer_get(struct k_itimer *timr, struct itimerspec64 *cur_setting)
return;
}
- /*
- * The timespec64 based conversion is suboptimal, but it's not
- * worth to implement yet another callback.
- */
- kc->clock_get_timespec(timr->it_clock, &ts64);
- now = timespec64_to_ktime(ts64);
+ now = kc->clock_get_ktime(timr->it_clock);
/*
* When a requeue is pending or this is a SIGEV_NONE timer move the
--
2.22.0
next prev parent reply other threads:[~2019-08-15 16:41 UTC|newest]
Thread overview: 61+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-15 16:38 [PATCHv6 00/36] kernel: Introduce Time Namespace Dmitry Safonov
2019-08-15 16:38 ` [PATCHv6 01/36] ns: " Dmitry Safonov
2019-08-15 17:19 ` Thomas Gleixner
2019-08-16 6:11 ` Andrei Vagin
2019-08-16 6:34 ` Thomas Gleixner
2019-08-15 16:38 ` [PATCHv6 02/36] timens: Add timens_offsets Dmitry Safonov
2019-08-15 17:21 ` Thomas Gleixner
2019-08-15 16:38 ` [PATCHv6 03/36] posix-clocks: Rename the clock_get() into clock_get_timespec() Dmitry Safonov
2019-08-15 17:24 ` Thomas Gleixner
2019-08-15 16:38 ` [PATCHv6 04/36] posix-clocks: Rename .clock_get_timespec() callbacks accordingly Dmitry Safonov
2019-08-15 16:38 ` [PATCHv6 05/36] alarmtimer: Rename gettime() callback to get_ktime() Dmitry Safonov
2019-08-15 16:38 ` [PATCHv6 06/36] alarmtimer: Provide get_timespec() callback Dmitry Safonov
2019-08-15 16:38 ` [PATCHv6 07/36] posix-clocks: Introduce clock_get_ktime() callback Dmitry Safonov
2019-08-15 16:38 ` Dmitry Safonov [this message]
2019-08-15 16:38 ` [PATCHv6 09/36] posix-clocks: Wire up clock_gettime() with timens offsets Dmitry Safonov
2019-08-15 16:38 ` [PATCHv6 10/36] kernel: Add do_timens_ktime_to_host() helper Dmitry Safonov
2019-08-15 17:38 ` Thomas Gleixner
2019-08-15 16:38 ` [PATCHv6 11/36] timerfd: Make timerfd_settime() time namespace aware Dmitry Safonov
2019-08-15 16:38 ` [PATCHv6 12/36] posix-timers: Make timer_settime() " Dmitry Safonov
2019-08-15 16:38 ` [PATCHv6 13/36] alarmtimer: Make nanosleep " Dmitry Safonov
2019-08-15 16:38 ` [PATCHv6 14/36] hrtimers: Prepare hrtimer_nanosleep() for time namespaces Dmitry Safonov
2019-08-15 17:44 ` Thomas Gleixner
2019-08-15 16:38 ` [PATCHv6 15/36] posix-timers: Make clock_nanosleep() time namespace aware Dmitry Safonov
2019-08-15 16:38 ` [PATCHv6 16/36] fd/proc: Respect boottime inside time namespace for /proc/uptime Dmitry Safonov
2019-08-16 0:46 ` Randy Dunlap
2019-08-15 16:38 ` [PATCHv6 17/36] x86/vdso2c: Correct err messages on file opening Dmitry Safonov
2019-08-15 16:38 ` [PATCHv6 18/36] x86/vdso2c: Convert iterator to unsigned Dmitry Safonov
2019-08-15 16:38 ` [PATCHv6 19/36] x86/vdso/Makefile: Add vobjs32 Dmitry Safonov
2019-08-15 16:38 ` [PATCHv6 20/36] x86/vdso: Restrict splitting VVAR VMA Dmitry Safonov
2019-08-15 16:38 ` [PATCHv6 21/36] x86/vdso: Rename vdso_image {.data=>.text} Dmitry Safonov
2019-08-15 16:38 ` [PATCHv6 22/36] x86/vdso: Add offsets page in vvar Dmitry Safonov
2019-08-15 19:21 ` Thomas Gleixner
2019-08-16 20:20 ` Dmitry Safonov
2019-08-15 16:38 ` [PATCHv6 23/36] x86/vdso: Allocate timens vdso Dmitry Safonov
2019-08-16 15:23 ` Andy Lutomirski
2019-08-16 20:10 ` Thomas Gleixner
2019-08-16 22:47 ` Dmitry Safonov
2019-08-18 16:21 ` Thomas Gleixner
2019-08-18 16:24 ` Thomas Gleixner
2019-08-18 16:29 ` Thomas Gleixner
2019-08-19 14:15 ` Dmitry Safonov
2019-08-19 14:44 ` Thomas Gleixner
2019-08-15 16:38 ` [PATCHv6 24/36] x86/vdso: Switch image on setns()/clone() Dmitry Safonov
2019-08-15 16:38 ` [PATCHv6 25/36] vdso: Introduce vdso_static_branch_unlikely() Dmitry Safonov
2019-08-15 18:03 ` Thomas Gleixner
2019-08-15 16:38 ` [PATCHv6 26/36] x86/vdso2c: Process jump tables Dmitry Safonov
2019-08-15 16:38 ` [PATCHv6 27/36] x86/vdso: Enable static branches for the timens vdso Dmitry Safonov
2019-08-15 16:38 ` [PATCHv6 28/36] posix-clocks: Add align for timens_offsets Dmitry Safonov
2019-08-15 19:22 ` Thomas Gleixner
2019-08-16 6:36 ` Thomas Gleixner
2019-08-15 16:38 ` [PATCHv6 29/36] fs/proc: Introduce /proc/pid/timens_offsets Dmitry Safonov
2019-08-15 16:38 ` [PATCHv6 30/36] selftest/timens: Add Time Namespace test for supported clocks Dmitry Safonov
2019-08-15 23:18 ` shuah
2019-08-16 6:20 ` Andrei Vagin
2019-08-15 16:38 ` [PATCHv6 31/36] selftest/timens: Add a test for timerfd Dmitry Safonov
2019-08-15 16:38 ` [PATCHv6 32/36] selftest/timens: Add a test for clock_nanosleep() Dmitry Safonov
2019-08-15 16:38 ` [PATCHv6 33/36] selftest/timens: Add procfs selftest Dmitry Safonov
2019-08-15 16:38 ` [PATCHv6 34/36] selftest/timens: Add timer offsets test Dmitry Safonov
2019-08-15 16:38 ` [PATCHv6 35/36] selftests/timens: Add a simple perf test for clock_gettime() Dmitry Safonov
2019-08-15 23:29 ` shuah
2019-08-15 16:38 ` [PATCHv6 36/36] selftest/timens: Check that a right vdso is mapped after fork and exec Dmitry Safonov
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