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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 04/36] posix-clocks: Rename .clock_get_timespec() callbacks accordingly
Date: Thu, 15 Aug 2019 17:38:04 +0100	[thread overview]
Message-ID: <20190815163836.2927-5-dima@arista.com> (raw)
In-Reply-To: <20190815163836.2927-1-dima@arista.com>

From: Andrei Vagin <avagin@gmail.com>

The upcoming support for time namespaces requires to have access to:
  - The time in a task's time namespace for sys_clock_gettime()
  - The time in the root name space for common_timer_get()

That adds a valid reason to finally implement a separate callback which
returns the time in ktime_t format in (struct k_clock).

As a preparation ground for introducing clock_get_ktime(), the original
callback clock_get() was renamed into clock_get_timespec().
Reflect the renaming into callbacks realizations.

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/alarmtimer.c   |  6 +++---
 kernel/time/posix-timers.c | 16 ++++++++--------
 2 files changed, 11 insertions(+), 11 deletions(-)

diff --git a/kernel/time/alarmtimer.c b/kernel/time/alarmtimer.c
index b5f3779eae57..995dd5aa68f0 100644
--- a/kernel/time/alarmtimer.c
+++ b/kernel/time/alarmtimer.c
@@ -644,13 +644,13 @@ static int alarm_clock_getres(const clockid_t which_clock, struct timespec64 *tp
 }
 
 /**
- * alarm_clock_get - posix clock_get_timespec interface
+ * alarm_clock_get_timespec - posix clock_get_timespec interface
  * @which_clock: clockid
  * @tp: timespec to fill.
  *
  * Provides the underlying alarm base time.
  */
-static int alarm_clock_get(clockid_t which_clock, struct timespec64 *tp)
+static int alarm_clock_get_timespec(clockid_t which_clock, struct timespec64 *tp)
 {
 	struct alarm_base *base = &alarm_bases[clock2alarm(which_clock)];
 
@@ -824,7 +824,7 @@ static int alarm_timer_nsleep(const clockid_t which_clock, int flags,
 
 const struct k_clock alarm_clock = {
 	.clock_getres		= alarm_clock_getres,
-	.clock_get_timespec	= alarm_clock_get,
+	.clock_get_timespec	= alarm_clock_get_timespec,
 	.timer_create		= alarm_timer_create,
 	.timer_set		= common_timer_set,
 	.timer_del		= common_timer_del,
diff --git a/kernel/time/posix-timers.c b/kernel/time/posix-timers.c
index 36a4f6a7c4d6..4e89e342cfcc 100644
--- a/kernel/time/posix-timers.c
+++ b/kernel/time/posix-timers.c
@@ -165,7 +165,7 @@ static inline void unlock_timer(struct k_itimer *timr, unsigned long flags)
 }
 
 /* Get clock_realtime */
-static int posix_clock_realtime_get(clockid_t which_clock, struct timespec64 *tp)
+static int posix_get_realtime_timespec(clockid_t which_clock, struct timespec64 *tp)
 {
 	ktime_get_real_ts64(tp);
 	return 0;
@@ -187,7 +187,7 @@ static int posix_clock_realtime_adj(const clockid_t which_clock,
 /*
  * Get monotonic time for posix timers
  */
-static int posix_ktime_get_ts(clockid_t which_clock, struct timespec64 *tp)
+static int posix_get_monotonic_timespec(clockid_t which_clock, struct timespec64 *tp)
 {
 	ktime_get_ts64(tp);
 	return 0;
@@ -222,13 +222,13 @@ static int posix_get_coarse_res(const clockid_t which_clock, struct timespec64 *
 	return 0;
 }
 
-static int posix_get_boottime(const clockid_t which_clock, struct timespec64 *tp)
+static int posix_get_boottime_timespec(const clockid_t which_clock, struct timespec64 *tp)
 {
 	ktime_get_boottime_ts64(tp);
 	return 0;
 }
 
-static int posix_get_tai(clockid_t which_clock, struct timespec64 *tp)
+static int posix_get_tai_timespec(clockid_t which_clock, struct timespec64 *tp)
 {
 	ktime_get_clocktai_ts64(tp);
 	return 0;
@@ -1267,7 +1267,7 @@ SYSCALL_DEFINE4(clock_nanosleep_time32, clockid_t, which_clock, int, flags,
 
 static const struct k_clock clock_realtime = {
 	.clock_getres		= posix_get_hrtimer_res,
-	.clock_get_timespec	= posix_clock_realtime_get,
+	.clock_get_timespec	= posix_get_realtime_timespec,
 	.clock_set		= posix_clock_realtime_set,
 	.clock_adj		= posix_clock_realtime_adj,
 	.nsleep			= common_nsleep,
@@ -1284,7 +1284,7 @@ static const struct k_clock clock_realtime = {
 
 static const struct k_clock clock_monotonic = {
 	.clock_getres		= posix_get_hrtimer_res,
-	.clock_get_timespec	= posix_ktime_get_ts,
+	.clock_get_timespec	= posix_get_monotonic_timespec,
 	.nsleep			= common_nsleep,
 	.timer_create		= common_timer_create,
 	.timer_set		= common_timer_set,
@@ -1314,7 +1314,7 @@ static const struct k_clock clock_monotonic_coarse = {
 
 static const struct k_clock clock_tai = {
 	.clock_getres		= posix_get_hrtimer_res,
-	.clock_get_timespec	= posix_get_tai,
+	.clock_get_timespec	= posix_get_tai_timespec,
 	.nsleep			= common_nsleep,
 	.timer_create		= common_timer_create,
 	.timer_set		= common_timer_set,
@@ -1329,7 +1329,7 @@ static const struct k_clock clock_tai = {
 
 static const struct k_clock clock_boottime = {
 	.clock_getres		= posix_get_hrtimer_res,
-	.clock_get_timespec	= posix_get_boottime,
+	.clock_get_timespec	= posix_get_boottime_timespec,
 	.nsleep			= common_nsleep,
 	.timer_create		= common_timer_create,
 	.timer_set		= common_timer_set,
-- 
2.22.0


  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 ` Dmitry Safonov [this message]
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 ` [PATCHv6 08/36] posix-timers: Use clock_get_ktime() in common_timer_get() Dmitry Safonov
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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