From: sourab.gupta@intel.com
To: intel-gfx@lists.freedesktop.org
Cc: "Christopher S . Hall" <christopher.s.hall@intel.com>,
Daniel Vetter <daniel.vetter@ffwll.ch>,
Sourab Gupta <sourab.gupta@intel.com>,
Deepak S <deepak.s@intel.com>,
Thomas Gleixner <tglx@linutronix.de>
Subject: [PATCH 13/15] time: export clocks_calc_mult_shift
Date: Thu, 2 Jun 2016 10:48:47 +0530 [thread overview]
Message-ID: <1464844729-2774-14-git-send-email-sourab.gupta@intel.com> (raw)
In-Reply-To: <1464844729-2774-1-git-send-email-sourab.gupta@intel.com>
From: Sourab Gupta <sourab.gupta@intel.com>
Exporting clocks_calc_mult_shift is helpful for drivers to calculate
the mult/shift values for their clocks, given their frequency.
This is particularly useful when such drivers may want to associate
timecounter/cyclecounter abstraction for their clock sources, in order
to use the cross timestamp infrastructure for syncing device time with
system time.
Signed-off-by: Sourab Gupta <sourab.gupta@intel.com>
---
kernel/time/clocksource.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/kernel/time/clocksource.c b/kernel/time/clocksource.c
index 56ece14..fef256f 100644
--- a/kernel/time/clocksource.c
+++ b/kernel/time/clocksource.c
@@ -89,6 +89,7 @@ clocks_calc_mult_shift(u32 *mult, u32 *shift, u32 from, u32 to, u32 maxsec)
*mult = tmp;
*shift = sft;
}
+EXPORT_SYMBOL_GPL(clocks_calc_mult_shift);
/*[Clocksource internal variables]---------
* curr_clocksource:
--
1.9.1
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx
next prev parent reply other threads:[~2016-06-02 5:17 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-02 5:18 [PATCH 00/15] Framework to collect command stream gpu metrics using i915 perf sourab.gupta
2016-06-02 5:18 ` [PATCH 01/15] drm/i915: Add ctx getparam ioctl parameter to retrieve ctx unique id sourab.gupta
2016-07-27 9:18 ` Deepak
2016-07-27 10:19 ` Daniel Vetter
2016-07-27 10:50 ` Chris Wilson
2016-07-28 9:37 ` Daniel Vetter
2016-06-02 5:18 ` [PATCH 02/15] drm/i915: Expose OA sample source to userspace sourab.gupta
2016-06-02 5:18 ` [PATCH 03/15] drm/i915: Framework for capturing command stream based OA reports sourab.gupta
2016-06-02 6:00 ` Martin Peres
2016-06-02 6:28 ` sourab gupta
2016-06-02 5:18 ` [PATCH 04/15] drm/i915: flush periodic samples, in case of no pending CS sample requests sourab.gupta
2016-06-02 5:18 ` [PATCH 05/15] drm/i915: Handle the overflow condition for command stream buf sourab.gupta
2016-06-02 5:18 ` [PATCH 06/15] drm/i915: Populate ctx ID for periodic OA reports sourab.gupta
2016-06-02 5:18 ` [PATCH 07/15] drm/i915: Add support for having pid output with OA report sourab.gupta
2016-06-02 5:18 ` [PATCH 08/15] drm/i915: Add support for emitting execbuffer tags through OA counter reports sourab.gupta
2016-06-02 5:18 ` [PATCH 09/15] drm/i915: Extend i915 perf framework for collecting timestamps on all gpu engines sourab.gupta
2016-06-02 5:18 ` [PATCH 10/15] drm/i915: Extract raw GPU timestamps from OA reports to forward in perf samples sourab.gupta
2016-06-02 5:18 ` [PATCH 11/15] drm/i915: Support opening multiple concurrent perf streams sourab.gupta
2016-06-02 5:18 ` [PATCH 12/15] time: Expose current clocksource in use by timekeeping framework sourab.gupta
2016-06-02 5:18 ` sourab.gupta [this message]
2016-06-02 5:18 ` [PATCH 14/15] drm/i915: Mechanism to forward clock monotonic raw time in perf samples sourab.gupta
2016-06-02 5:18 ` [PATCH 15/15] drm/i915: Support for capturing MMIO register values sourab.gupta
2016-06-03 12:08 ` ✗ Ro.CI.BAT: failure for Framework to collect command stream gpu metrics using i915 perf (rev2) Patchwork
-- strict thread matches above, loose matches on Subject: below --
2016-11-04 9:30 [PATCH 00/15] Framework to collect command stream gpu metrics using i915 perf sourab.gupta
2016-11-04 9:30 ` [PATCH 13/15] time: export clocks_calc_mult_shift sourab.gupta
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=1464844729-2774-14-git-send-email-sourab.gupta@intel.com \
--to=sourab.gupta@intel.com \
--cc=christopher.s.hall@intel.com \
--cc=daniel.vetter@ffwll.ch \
--cc=deepak.s@intel.com \
--cc=intel-gfx@lists.freedesktop.org \
--cc=tglx@linutronix.de \
/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