From: Jeff Dike <jdike@addtoit.com>
To: Andrew Morton <akpm@osdl.org>
Cc: LKML <linux-kernel@vger.kernel.org>,
uml-devel <user-mode-linux-devel@lists.sourceforge.net>
Subject: [uml-devel] [PATCH 7/11] UML - clocksource support
Date: Wed, 19 Sep 2007 13:02:26 -0400 [thread overview]
Message-ID: <20070919170226.GA10191@c2.user-mode-linux.org> (raw)
Add clocksource support.
Signed-off-by: Jeff Dike <jdike@linux.intel.com>
---
arch/um/kernel/time.c | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
Index: linux-2.6.20/arch/um/kernel/time.c
===================================================================
--- linux-2.6.20.orig/arch/um/kernel/time.c 2007-09-19 12:25:07.000000000 -0400
+++ linux-2.6.20/arch/um/kernel/time.c 2007-09-19 12:25:07.000000000 -0400
@@ -97,6 +97,21 @@ static irqreturn_t um_timer(int irq, voi
return IRQ_HANDLED;
}
+static cycle_t itimer_read(void)
+{
+ return os_nsecs();
+}
+
+static struct clocksource itimer_clocksource = {
+ .name = "itimer",
+ .rating = 300,
+ .read = itimer_read,
+ .mask = CLOCKSOURCE_MASK(64),
+ .mult = 1,
+ .shift = 0,
+ .flags = CLOCK_SOURCE_IS_CONTINUOUS,
+};
+
static void __init setup_itimer(void)
{
int err;
@@ -106,6 +121,12 @@ static void __init setup_itimer(void)
printk(KERN_ERR "register_timer : request_irq failed - "
"errno = %d\n", -err);
+ err = clocksource_register(&itimer_clocksource);
+ if (err) {
+ printk(KERN_ERR "clocksource_register returned %d\n", err);
+ return;
+ }
+
itimer_clockevent.mult = div_sc(HZ, NSEC_PER_SEC, 32);
itimer_clockevent.max_delta_ns =
clockevent_delta2ns(60 * HZ, &itimer_clockevent);
-------------------------------------------------------------------------
This SF.net email is sponsored by: Microsoft
Defy all challenges. Microsoft(R) Visual Studio 2005.
http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
_______________________________________________
User-mode-linux-devel mailing list
User-mode-linux-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel
WARNING: multiple messages have this Message-ID (diff)
From: Jeff Dike <jdike@addtoit.com>
To: Andrew Morton <akpm@osdl.org>
Cc: LKML <linux-kernel@vger.kernel.org>,
uml-devel <user-mode-linux-devel@lists.sourceforge.net>
Subject: [PATCH 7/11] UML - clocksource support
Date: Wed, 19 Sep 2007 13:02:26 -0400 [thread overview]
Message-ID: <20070919170226.GA10191@c2.user-mode-linux.org> (raw)
Add clocksource support.
Signed-off-by: Jeff Dike <jdike@linux.intel.com>
---
arch/um/kernel/time.c | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
Index: linux-2.6.20/arch/um/kernel/time.c
===================================================================
--- linux-2.6.20.orig/arch/um/kernel/time.c 2007-09-19 12:25:07.000000000 -0400
+++ linux-2.6.20/arch/um/kernel/time.c 2007-09-19 12:25:07.000000000 -0400
@@ -97,6 +97,21 @@ static irqreturn_t um_timer(int irq, voi
return IRQ_HANDLED;
}
+static cycle_t itimer_read(void)
+{
+ return os_nsecs();
+}
+
+static struct clocksource itimer_clocksource = {
+ .name = "itimer",
+ .rating = 300,
+ .read = itimer_read,
+ .mask = CLOCKSOURCE_MASK(64),
+ .mult = 1,
+ .shift = 0,
+ .flags = CLOCK_SOURCE_IS_CONTINUOUS,
+};
+
static void __init setup_itimer(void)
{
int err;
@@ -106,6 +121,12 @@ static void __init setup_itimer(void)
printk(KERN_ERR "register_timer : request_irq failed - "
"errno = %d\n", -err);
+ err = clocksource_register(&itimer_clocksource);
+ if (err) {
+ printk(KERN_ERR "clocksource_register returned %d\n", err);
+ return;
+ }
+
itimer_clockevent.mult = div_sc(HZ, NSEC_PER_SEC, 32);
itimer_clockevent.max_delta_ns =
clockevent_delta2ns(60 * HZ, &itimer_clockevent);
next reply other threads:[~2007-09-19 17:02 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-09-19 17:02 Jeff Dike [this message]
2007-09-19 17:02 ` [PATCH 7/11] UML - clocksource support Jeff Dike
-- strict thread matches above, loose matches on Subject: below --
2007-09-12 21:16 [uml-devel] " Jeff Dike
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20070919170226.GA10191@c2.user-mode-linux.org \
--to=jdike@addtoit.com \
--cc=akpm@osdl.org \
--cc=linux-kernel@vger.kernel.org \
--cc=user-mode-linux-devel@lists.sourceforge.net \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.