From: Feng Tang <feng.tang@intel.com>
To: Thomas Gleixner <tglx@linutronix.de>,
John Stultz <john.stultz@linaro.org>, Ingo Molnar <mingo@elte.hu>,
"H. Peter Anvin" <hpa@linux.intel.com>,
x86@kernel.org, Len Brown <lenb@kernel.org>,
"Rafael J. Wysocki" <rafael.j.wysocki@intel.com>,
linux-kernel@vger.kernel.org
Cc: Feng Tang <feng.tang@intel.com>
Subject: [RFC PATCH 2/5] clocksource: Add new feature flag CLOCK_SOURCE_SUSPEND_NOTSTOP
Date: Mon, 21 Jan 2013 14:38:42 +0800 [thread overview]
Message-ID: <1358750325-21217-3-git-send-email-feng.tang@intel.com> (raw)
In-Reply-To: <1358750325-21217-1-git-send-email-feng.tang@intel.com>
Some x86 processors have a TSC clocksource, which continue to work when
system is suspend. Add a feature flag so that it could be utilized.
Signed-off-by: Feng Tang <feng.tang@intel.com>
---
include/linux/clocksource.h | 1 +
1 file changed, 1 insertion(+)
diff --git a/include/linux/clocksource.h b/include/linux/clocksource.h
index 4dceaf8..2d53a8a 100644
--- a/include/linux/clocksource.h
+++ b/include/linux/clocksource.h
@@ -206,6 +206,7 @@ struct clocksource {
#define CLOCK_SOURCE_WATCHDOG 0x10
#define CLOCK_SOURCE_VALID_FOR_HRES 0x20
#define CLOCK_SOURCE_UNSTABLE 0x40
+#define CLOCK_SOURCE_SUSPEND_NOTSTOP 0x80
/* simplify initialization of mask field */
#define CLOCKSOURCE_MASK(bits) (cycle_t)((bits) < 64 ? ((1ULL<<(bits))-1) : -1)
--
1.7.9.5
next prev parent reply other threads:[~2013-01-21 6:38 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-21 6:38 [RFC PATCH 0/5] Add support for S3 non-stop TSC support Feng Tang
2013-01-21 6:38 ` [RFC PATCH 1/5] x86: Add cpu capability flag X86_FEATURE_TSC_S3_NOTSTOP Feng Tang
2013-01-21 7:27 ` Chen Gong
2013-01-21 7:59 ` Feng Tang
2013-01-21 15:58 ` H. Peter Anvin
2013-01-22 14:07 ` Feng Tang
2013-01-21 6:38 ` Feng Tang [this message]
2013-01-21 6:38 ` [RFC PATCH 3/5] x86: tsc: Add support for new S3_NOTSTOP feature Feng Tang
2013-01-21 6:38 ` [RFC PATCH 4/5] clocksource: Enlarge the maxim time interval when configuring the scale and shift Feng Tang
2013-01-21 7:25 ` Chen Gong
2013-01-21 6:38 ` [RFC PATCH 5/5] timekeeping: Add support for clocksource which doesn't stop during suspend Feng Tang
2013-01-21 13:55 ` [RFC PATCH 0/5] Add support for S3 non-stop TSC support Rafael J. Wysocki
2013-03-30 18:14 ` Pavel Machek
2013-04-01 17:32 ` John Stultz
2013-04-01 20:31 ` Pavel Machek
2013-04-01 20:41 ` John Stultz
2013-01-21 18:46 ` John Stultz
2013-01-22 14:55 ` Feng Tang
2013-01-22 21:56 ` John Stultz
2013-01-24 3:37 ` Feng Tang
2013-01-24 18:15 ` Jason Gunthorpe
2013-01-22 19:57 ` Jason Gunthorpe
2013-01-22 20:22 ` John Stultz
2013-01-23 0:26 ` Jason Gunthorpe
2013-01-23 0:41 ` John Stultz
2013-01-23 1:37 ` Jason Gunthorpe
2013-01-23 1:54 ` John Stultz
2013-01-23 2:35 ` Jason Gunthorpe
2013-01-23 3:07 ` John Stultz
2013-01-23 19:23 ` Jason Gunthorpe
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=1358750325-21217-3-git-send-email-feng.tang@intel.com \
--to=feng.tang@intel.com \
--cc=hpa@linux.intel.com \
--cc=john.stultz@linaro.org \
--cc=lenb@kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@elte.hu \
--cc=rafael.j.wysocki@intel.com \
--cc=tglx@linutronix.de \
--cc=x86@kernel.org \
/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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®