From: Thomas Gleixner <tglx@kernel.org>
To: LKML <linux-kernel@vger.kernel.org>
Cc: David Woodhouse <dwmw2@infradead.org>,
Miroslav Lichvar <mlichvar@redhat.com>,
John Stultz <jstultz@google.com>, Stephen Boyd <sboyd@kernel.org>,
Anna-Maria Behnsen <anna-maria@linutronix.de>,
Frederic Weisbecker <frederic@kernel.org>,
thomas.weissschuh@linutronix.de,
Arthur Kiyanovski <akiyano@amazon.com>,
Rodolfo Giometti <giometti@enneenne.com>,
Vincent Donnefort <vdonnefort@google.com>,
Marc Zyngier <maz@kernel.org>,
Oliver Upton <oliver.upton@linux.dev>,
kvmarm@lists.linux.dev, Oliver Upton <oupton@kernel.org>,
Richard Cochran <richardcochran@gmail.com>,
netdev@vger.kernel.org, Takashi Iwai <tiwai@suse.com>,
Miri Korenblit <miriam.rachel.korenblit@intel.com>,
Johannes Berg <johannes.berg@intel.com>,
Jacob Keller <jacob.e.keller@intel.com>,
Tony Nguyen <anthony.l.nguyen@intel.com>,
Saeed Mahameed <saeedm@nvidia.com>,
Peter Hilber <peter.hilber@oss.qualcomm.com>,
"Michael S. Tsirkin" <mst@redhat.com>,
virtualization@lists.linux.dev, linux-wireless@vger.kernel.org,
linux-sound@vger.kernel.org, David Woodhouse <dwmw@amazon.co.uk>,
Vadim Fedorenko <vadim.fedorenko@linux.dev>
Subject: [patch V2 03/25] pps: generators: Use ktime_get_real_ts64() instead of ktime_get_snapshot()
Date: Fri, 29 May 2026 21:59:59 +0200 [thread overview]
Message-ID: <20260529195557.074439049@kernel.org> (raw)
In-Reply-To: 20260529193435.921555544@kernel.org
From: Thomas Gleixner <tglx@kernel.org>
There is no reason to use the more complex ktime_get_snapshot() for
retrieving CLOCK_REALTIME.
Just use ktime_get_real_ts64(), which avoids the extra timespec64
conversion as a bonus.
No functional change intended.
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Tested-by: Arthur Kiyanovski <akiyano@amazon.com>
Reviewed-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
---
drivers/pps/generators/pps_gen-dummy.c | 6 +-----
drivers/pps/generators/pps_gen_tio.c | 6 +-----
2 files changed, 2 insertions(+), 10 deletions(-)
--- a/drivers/pps/generators/pps_gen-dummy.c
+++ b/drivers/pps/generators/pps_gen-dummy.c
@@ -39,11 +39,7 @@ static void pps_gen_ktimer_event(struct
static int pps_gen_dummy_get_time(struct pps_gen_device *pps_gen,
struct timespec64 *time)
{
- struct system_time_snapshot snap;
-
- ktime_get_snapshot(&snap);
- *time = ktime_to_timespec64(snap.real);
-
+ ktime_get_real_ts64(time);
return 0;
}
--- a/drivers/pps/generators/pps_gen_tio.c
+++ b/drivers/pps/generators/pps_gen_tio.c
@@ -189,11 +189,7 @@ static int pps_tio_gen_enable(struct pps
static int pps_tio_get_time(struct pps_gen_device *pps_gen,
struct timespec64 *time)
{
- struct system_time_snapshot snap;
-
- ktime_get_snapshot(&snap);
- *time = ktime_to_timespec64(snap.real);
-
+ ktime_get_real_ts64(time);
return 0;
}
next prev parent reply other threads:[~2026-05-29 20:00 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-29 19:59 [patch V2 00/25] timekeeping/ptp: Expand snapshot functionality Thomas Gleixner
2026-05-29 19:59 ` [patch V2 01/25] timekeeping: Provide ktime_get_snapshot_id() Thomas Gleixner
2026-05-29 19:59 ` [patch V2 02/25] timekeeping: Use system_time_snapshot::systime/monoraw instead of ::real/raw Thomas Gleixner
2026-05-29 19:59 ` Thomas Gleixner [this message]
2026-05-29 20:00 ` [patch V2 04/25] pps: Convert to ktime_get_snapshot_id() Thomas Gleixner
2026-05-29 20:00 ` [patch V2 05/25] KVM: arm64: Use ktime_get_snapshot_id() to retrieve CLOCK_BOOTTIME Thomas Gleixner
2026-05-29 20:00 ` [patch V2 06/25] KVM: arm64: Use ktime_get_snapshot_id() to snapshot CLOCK_REALTIME Thomas Gleixner
2026-05-29 20:00 ` [patch V2 07/25] ptp: ptp_vmclock: Convert to ktime_get_snapshot_id() Thomas Gleixner
2026-05-29 20:00 ` [patch V2 08/25] timekeeping: Remove system_time_snapshot::real/boot/raw Thomas Gleixner
2026-05-29 20:00 ` [patch V2 09/25] timekeeping: Add CLOCK_AUX support for ktime_get_snapshot_id() Thomas Gleixner
2026-05-29 20:00 ` [patch V2 10/25] timekeeping: Add system_counterval_t to struct system_device_crosststamp Thomas Gleixner
2026-05-29 20:00 ` [patch V2 11/25] timekeeping: Add CLOCK ID to system_device_crosststamp Thomas Gleixner
2026-05-29 20:00 ` [patch V2 12/25] wifi: iwlwifi: Adopt PTP cross timestamps to core changes Thomas Gleixner
2026-05-29 20:00 ` [patch V2 13/25] ice/ptp: Use provided clock ID for history snapshot Thomas Gleixner
2026-05-29 20:00 ` [patch V2 14/25] igc: " Thomas Gleixner
2026-05-29 20:00 ` [patch V2 15/25] net/mlx5: " Thomas Gleixner
2026-05-29 20:00 ` [patch V2 16/25] virtio_rtc: " Thomas Gleixner
2026-05-29 20:00 ` [patch V2 17/25] timekeeping: Remove ktime_get_snapshot() Thomas Gleixner
2026-05-29 20:01 ` [patch V2 18/25] timekeeping: Prepare for cross timestamps on arbitrary clock IDs Thomas Gleixner
2026-05-29 20:01 ` [patch V2 19/25] ptp: Use system_device_crosststamp::sys_systime Thomas Gleixner
2026-05-29 20:01 ` [patch V2 20/25] wifi: iwlwifi: " Thomas Gleixner
2026-05-29 20:01 ` [patch V2 21/25] ALSA: hda/common: " Thomas Gleixner
2026-05-29 20:01 ` [patch V2 22/25] timekeeping: Remove system_device_crosststamp::sys_realtime Thomas Gleixner
2026-05-29 20:01 ` [patch V2 23/25] timekeeping: Add support for AUX clock cross timestamping Thomas Gleixner
2026-05-29 20:01 ` [patch V2 24/25] ptp: Switch to ktime_get_snapshot_id() for pre/post timestamps Thomas Gleixner
2026-05-29 20:01 ` [patch V2 25/25] timekeeping: Add clocksource read_snapshot() method and hw_cycles to snapshot Thomas Gleixner
2026-05-29 20:33 ` [patch V2 00/25] timekeeping/ptp: Expand snapshot functionality Jacob Keller
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