From: Jiri Slaby <jslaby@suse.cz>
To: gregkh@linuxfoundation.org
Cc: linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org,
Jiri Slaby <jslaby@suse.cz>, Shawn Guo <shawnguo@kernel.org>,
Sascha Hauer <s.hauer@pengutronix.de>,
Pengutronix Kernel Team <kernel@pengutronix.de>,
Fabio Estevam <festevam@gmail.com>,
NXP Linux Team <linux-imx@nxp.com>
Subject: [PATCH 10/44] tty: imx, use ms_to_ktime
Date: Tue, 2 Mar 2021 07:21:40 +0100 [thread overview]
Message-ID: <20210302062214.29627-10-jslaby@suse.cz> (raw)
In-Reply-To: <20210302062214.29627-1-jslaby@suse.cz>
This really eliminates multiplications from the assembly. I would have
thought they are optimized by inlining ktime_set, but not on x86_64 with
gcc 10.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Pengutronix Kernel Team <kernel@pengutronix.de>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: NXP Linux Team <linux-imx@nxp.com>
---
drivers/tty/serial/imx.c | 6 +-----
1 file changed, 1 insertion(+), 5 deletions(-)
diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
index 8257597d034d..3f69356937ef 100644
--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c
@@ -394,11 +394,7 @@ static void imx_uart_rts_inactive(struct imx_port *sport, u32 *ucr2)
static void start_hrtimer_ms(struct hrtimer *hrt, unsigned long msec)
{
- long sec = msec / MSEC_PER_SEC;
- long nsec = (msec % MSEC_PER_SEC) * 1000000;
- ktime_t t = ktime_set(sec, nsec);
-
- hrtimer_start(hrt, t, HRTIMER_MODE_REL);
+ hrtimer_start(hrt, ms_to_ktime(msec), HRTIMER_MODE_REL);
}
/* called with port.lock taken and irqs off */
--
2.30.1
next prev parent reply other threads:[~2021-03-02 8:26 UTC|newest]
Thread overview: 63+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-02 6:21 [PATCH 01/44] MAINTAINERS: orphan mxser Jiri Slaby
2021-03-02 6:21 ` [PATCH 02/44] MAINTAINERS: drop cyclades.com reference Jiri Slaby
2021-03-02 6:21 ` [PATCH 03/44] PCI: remove synclink entries from pci_ids Jiri Slaby
2021-03-06 23:47 ` Krzysztof Wilczyński
2021-03-12 22:12 ` Bjorn Helgaas
2021-03-02 6:21 ` [PATCH 04/44] vgacon: comment on vga_rolled_over Jiri Slaby
2021-03-11 13:08 ` Daniel Vetter
2021-03-02 6:21 ` [PATCH 05/44] tty: cyclades, remove this orphan Jiri Slaby
2021-03-02 6:21 ` [PATCH 06/44] tty: isicom, " Jiri Slaby
2021-03-02 6:21 ` [PATCH 07/44] tty: rocket, remove the driver Jiri Slaby
2021-03-02 6:21 ` [PATCH 08/44] tty: remove TTY_LDISC_MAGIC Jiri Slaby
2021-03-02 6:21 ` [PATCH 09/44] tty: n_tty, set tty_ldisc_ops::owner Jiri Slaby
2021-03-02 6:21 ` Jiri Slaby [this message]
2021-03-02 6:59 ` [PATCH 10/44] tty: imx, use ms_to_ktime Uwe Kleine-König
2021-03-02 6:21 ` [PATCH 11/44] tty: 8250, " Jiri Slaby
2021-03-02 6:21 ` [PATCH 12/44] tty: 8250, cleanup em485 timers Jiri Slaby
2021-03-02 6:21 ` [PATCH 13/44] tty: 8250/serial_cs, propagate errors in simple_config Jiri Slaby
2021-03-02 6:21 ` [PATCH 14/44] net: caif: inline register_ldisc Jiri Slaby
2021-03-02 6:21 ` [PATCH 15/44] net: nfc: nci: remove memset of nci_uart_drivers Jiri Slaby
2021-03-02 6:21 ` [PATCH 16/44] net: nfc: nci: drop nci_uart_ops::recv_buf Jiri Slaby
2021-03-02 6:21 ` [PATCH 17/44] net: nfc: nci: drop nci_uart_default_recv Jiri Slaby
2021-03-02 6:21 ` [PATCH 18/44] tty: con3215, remove tasklet for tty_wakeup Jiri Slaby
2021-03-02 6:21 ` [PATCH 19/44] tty: con3215, remove unneeded tty checks Jiri Slaby
2021-03-02 6:21 ` [PATCH 20/44] tty: con3215, remove tty->driver_data casts Jiri Slaby
2021-03-02 6:21 ` [PATCH 21/44] tty: jsm_tty, make char+error handling readable Jiri Slaby
2021-03-02 6:21 ` [PATCH 22/44] tty: nozomi, remove struct buffer Jiri Slaby
2021-03-02 6:21 ` [PATCH 23/44] tty: nozomi, remove init/exit messages Jiri Slaby
2021-03-02 6:21 ` [PATCH 24/44] tty: nozomi, remove useless debug prints Jiri Slaby
2021-03-02 6:21 ` [PATCH 25/44] tty: vcc, make globals static Jiri Slaby
2021-03-02 6:21 ` [PATCH 26/44] tty: vcc, drop version dump Jiri Slaby
2021-03-02 6:21 ` [PATCH 27/44] tty: vcc, use name strings directly Jiri Slaby
2021-03-02 6:21 ` [PATCH 28/44] tty: vcc, remove useless tty checks Jiri Slaby
2021-03-02 6:21 ` [PATCH 29/44] tty: xtensa/iss, drop serial_version & serial_name Jiri Slaby
2021-03-02 6:45 ` Max Filippov
2021-03-02 6:22 ` [PATCH 30/44] tty: xtensa/iss, don't reassign to tty->port Jiri Slaby
2021-03-02 7:12 ` Max Filippov
2021-03-02 6:22 ` [PATCH 31/44] tty: xtensa/iss, remove stale comments Jiri Slaby
2021-03-02 6:49 ` Max Filippov
2021-03-02 6:22 ` [PATCH 32/44] tty: xtensa/iss, setup the timer statically Jiri Slaby
2021-03-02 6:52 ` Max Filippov
2021-03-02 6:22 ` [PATCH 33/44] tty: xtensa/iss, make rs_init static Jiri Slaby
2021-03-02 6:55 ` Max Filippov
2021-03-02 6:22 ` [PATCH 34/44] tty: do not check tty_unregister_driver's return value Jiri Slaby
2021-03-02 6:57 ` Max Filippov
2021-03-02 11:14 ` David Sterba
2021-03-02 6:22 ` [PATCH 35/44] tty: let tty_unregister_driver return void Jiri Slaby
2021-03-02 6:22 ` [PATCH 36/44] tty: localise ptychar and make it const Jiri Slaby
2021-03-02 6:22 ` [PATCH 37/44] USB: serial/keyspan, drop unneeded forward declarations Jiri Slaby
2021-03-03 19:17 ` Greg KH
2021-03-05 10:10 ` Johan Hovold
2021-03-15 8:43 ` Johan Hovold
2021-03-02 6:22 ` [PATCH 38/44] USB: serial/io_edgeport, " Jiri Slaby
2021-03-03 19:17 ` Greg KH
2021-03-02 6:22 ` [PATCH 39/44] tty: synclink_gt, " Jiri Slaby
2021-03-02 6:22 ` [PATCH 40/44] tty: hvc, " Jiri Slaby
2021-03-02 19:09 ` Tyrel Datwyler
2021-03-03 7:44 ` Uwe Kleine-König
2021-03-02 6:22 ` [PATCH 41/44] tty: n_gsm, remove duplicates of parameters Jiri Slaby
2021-03-02 6:22 ` [PATCH 42/44] tty: cleanup tty_chars_in_buffer Jiri Slaby
2021-03-02 6:22 ` [PATCH 43/44] tty: make everyone's chars_in_buffer return >= 0 Jiri Slaby
2021-03-02 6:22 ` [PATCH 44/44] tty: make everyone's write_room " Jiri Slaby
2021-03-05 10:18 ` Johan Hovold
2021-03-03 19:19 ` [PATCH 01/44] MAINTAINERS: orphan mxser Greg KH
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