From: Stefan Hajnoczi <stefanha@gmail.com>
To: Alex Bligh <alex@alex.org.uk>
Cc: Kevin Wolf <kwolf@redhat.com>,
Anthony Liguori <aliguori@us.ibm.com>,
qemu-devel@nongnu.org, liu ping fan <qemulist@gmail.com>,
Stefan Hajnoczi <stefanha@redhat.com>,
Paolo Bonzini <pbonzini@redhat.com>,
MORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp>,
rth@twiddle.net
Subject: Re: [Qemu-devel] [RFC] [PATCHv8 05/30] aio / timers: Add prctl(PR_SET_TIMERSLACK, 1, ...) to reduce timer slack
Date: Fri, 9 Aug 2013 10:53:57 +0200 [thread overview]
Message-ID: <20130809085357.GC22210@stefanha-thinkpad.redhat.com> (raw)
In-Reply-To: <1375998147-24292-6-git-send-email-alex@alex.org.uk>
On Thu, Aug 08, 2013 at 10:42:02PM +0100, Alex Bligh wrote:
> Where supported, called prctl(PR_SET_TIMERSLACK, 1, ...) to
> set one nanosecond timer slack to increase precision of timer
> calls.
>
> Signed-off-by: Alex Bligh <alex@alex.org.uk>
> ---
> qemu-timer.c | 7 +++++++
> 1 file changed, 7 insertions(+)
>
> diff --git a/qemu-timer.c b/qemu-timer.c
> index 5e81935..9eb6db8 100644
> --- a/qemu-timer.c
> +++ b/qemu-timer.c
> @@ -41,6 +41,10 @@
> #include <poll.h>
> #endif
>
> +#ifdef CONFIG_PRCTL_PR_SET_TIMERSLACK
The ./configure change should also be in this patch. I think it crept
into another patch by mistake.
next prev parent reply other threads:[~2013-08-09 8:54 UTC|newest]
Thread overview: 91+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-08 21:41 [Qemu-devel] [RFC] [PATCHv8 00/30] aio / timers: Add AioContext timers and use ppoll Alex Bligh
2013-08-08 21:41 ` [Qemu-devel] [RFC] [PATCHv8 01/30] aio / timers: Rename qemu_new_clock and expose clock types Alex Bligh
2013-08-08 21:41 ` [Qemu-devel] [RFC] [PATCHv8 02/30] aio / timers: add qemu-timer.c utility functions Alex Bligh
2013-08-08 21:42 ` [Qemu-devel] [RFC] [PATCHv8 03/30] aio / timers: Consistent treatment of disabled clocks for deadlines Alex Bligh
2013-08-08 21:42 ` [Qemu-devel] [RFC] [PATCHv8 04/30] aio / timers: add ppoll support with qemu_poll_ns Alex Bligh
2013-08-08 21:42 ` [Qemu-devel] [RFC] [PATCHv8 05/30] aio / timers: Add prctl(PR_SET_TIMERSLACK, 1, ...) to reduce timer slack Alex Bligh
2013-08-09 8:53 ` Stefan Hajnoczi [this message]
2013-08-09 14:10 ` Alex Bligh
2013-08-08 21:42 ` [Qemu-devel] [RFC] [PATCHv8 06/30] aio / timers: Make qemu_run_timers and qemu_run_all_timers return progress Alex Bligh
2013-08-08 21:42 ` [Qemu-devel] [RFC] [PATCHv8 07/30] aio / timers: Split QEMUClock into QEMUClock and QEMUTimerList Alex Bligh
2013-08-09 10:03 ` Paolo Bonzini
2013-08-09 14:23 ` Alex Bligh
2013-08-09 14:28 ` Paolo Bonzini
2013-08-08 21:42 ` [Qemu-devel] [RFC] [PATCHv8 08/30] aio / timers: Untangle include files Alex Bligh
2013-08-08 21:42 ` [Qemu-devel] [RFC] [PATCHv8 09/30] aio / timers: Add QEMUTimerListGroup and helper functions Alex Bligh
2013-08-09 10:02 ` Paolo Bonzini
2013-08-09 14:27 ` Alex Bligh
2013-08-09 14:35 ` Paolo Bonzini
2013-08-09 14:47 ` Alex Bligh
2013-08-09 14:59 ` Paolo Bonzini
2013-08-10 11:05 ` Alex Bligh
2013-08-11 7:53 ` Paolo Bonzini
2013-08-11 8:29 ` Alex Bligh
2013-08-12 17:27 ` Paolo Bonzini
2013-08-12 17:32 ` Alex Bligh
2013-08-12 6:53 ` Wenchao Xia
2013-08-12 7:08 ` Alex Bligh
2013-08-09 15:09 ` Stefan Hajnoczi
2013-08-09 15:15 ` Paolo Bonzini
2013-08-10 3:27 ` liu ping fan
2013-08-10 8:38 ` Paolo Bonzini
2013-08-08 21:42 ` [Qemu-devel] [RFC] [PATCHv8 10/30] aio / timers: Add QEMUTimerListGroup to AioContext Alex Bligh
2013-08-08 21:42 ` [Qemu-devel] [RFC] [PATCHv8 11/30] aio / timers: Add a notify callback to QEMUTimerList Alex Bligh
2013-08-09 9:02 ` Stefan Hajnoczi
2013-08-09 14:16 ` Alex Bligh
2013-08-09 10:03 ` Paolo Bonzini
2013-08-09 14:28 ` Alex Bligh
2013-08-10 11:13 ` Alex Bligh
2013-08-08 21:42 ` [Qemu-devel] [RFC] [PATCHv8 12/30] aio / timers: aio_ctx_prepare sets timeout from AioContext timers Alex Bligh
2013-08-09 10:04 ` Paolo Bonzini
2013-08-09 14:30 ` Alex Bligh
2013-08-09 14:41 ` Paolo Bonzini
2013-08-09 14:55 ` Alex Bligh
2013-08-08 21:42 ` [Qemu-devel] [RFC] [PATCHv8 13/30] aio / timers: Add aio_timer_new wrapper Alex Bligh
2013-08-09 10:06 ` Paolo Bonzini
2013-08-09 14:32 ` Alex Bligh
2013-08-09 14:36 ` Paolo Bonzini
2013-08-09 14:51 ` Alex Bligh
2013-08-09 14:51 ` Paolo Bonzini
2013-08-09 14:57 ` Alex Bligh
2013-08-09 14:58 ` Paolo Bonzini
2013-08-09 22:57 ` Alex Bligh
2013-08-10 8:36 ` Paolo Bonzini
2013-08-08 21:42 ` [Qemu-devel] [RFC] [PATCHv8 14/30] aio / timers: Convert aio_poll to use AioContext timers' deadline Alex Bligh
2013-08-08 21:42 ` [Qemu-devel] [RFC] [PATCHv8 15/30] aio / timers: Convert mainloop to use timeout Alex Bligh
2013-08-09 10:07 ` Paolo Bonzini
2013-08-08 21:42 ` [Qemu-devel] [RFC] [PATCHv8 16/30] aio / timers: On timer modification, qemu_notify or aio_notify Alex Bligh
2013-08-09 10:08 ` Paolo Bonzini
2013-08-08 21:42 ` [Qemu-devel] [RFC] [PATCHv8 17/30] aio / timers: Introduce new API qemu_timer_new and friends Alex Bligh
2013-08-08 21:42 ` [Qemu-devel] [RFC] [PATCHv8 18/30] aio / timers: Use all timerlists in icount warp calculations Alex Bligh
2013-08-08 21:42 ` [Qemu-devel] [RFC] [PATCHv8 19/30] aio / timers: Add documentation and new format calls Alex Bligh
2013-08-08 21:42 ` [Qemu-devel] [RFC] [PATCHv8 20/30] aio / timers: Remove alarm timers Alex Bligh
2013-08-08 21:42 ` [Qemu-devel] [RFC] [PATCHv8 21/30] aio / timers: Remove legacy qemu_clock_deadline & qemu_timerlist_deadline Alex Bligh
2013-08-08 21:42 ` [Qemu-devel] [RFC] [PATCHv8 22/30] aio / timers: Add qemu_clock_get_ms and qemu_clock_get_ms Alex Bligh
2013-08-08 21:42 ` [Qemu-devel] [RFC] [PATCHv8 23/30] aio / timers: Rearrange timer.h & make legacy functions call non-legacy Alex Bligh
2013-08-08 22:12 ` Alex Bligh
2013-08-09 9:23 ` Stefan Hajnoczi
2013-08-09 14:18 ` Alex Bligh
2013-08-09 14:26 ` Paolo Bonzini
2013-08-08 21:42 ` [Qemu-devel] [RFC] [PATCHv8 24/30] aio / timers: Remove main_loop_timerlist Alex Bligh
2013-08-08 21:42 ` [Qemu-devel] [RFC] [PATCHv8 25/30] aio / timers: Convert rtc_clock to be a QEMUClockType Alex Bligh
2013-08-08 21:42 ` [Qemu-devel] [RFC] [PATCHv8 26/30] aio / timers: convert block_job_sleep_ns and co_sleep_ns to new API Alex Bligh
2013-08-08 21:42 ` [Qemu-devel] [RFC] [PATCHv8 27/30] aio / timers: Add test harness for AioContext timers Alex Bligh
2013-08-08 21:42 ` [Qemu-devel] [RFC] [PATCHv8 28/30] aio / timers: Add scripts/switch-timer-api Alex Bligh
2013-08-09 10:23 ` Paolo Bonzini
2013-08-09 14:34 ` Alex Bligh
2013-08-09 10:26 ` Paolo Bonzini
2013-08-09 14:35 ` Alex Bligh
2013-08-09 14:37 ` Paolo Bonzini
2013-08-08 21:42 ` [Qemu-devel] [RFC] [PATCHv8 29/30] aio / timers: Switch entire codebase to the new timer API Alex Bligh
2013-08-08 21:42 ` [Qemu-devel] [RFC] [PATCHv8 30/30] aio / timers: Remove legacy interface Alex Bligh
2013-08-08 21:46 ` [Qemu-devel] [RFC] [PATCHv8 00/30] aio / timers: Add AioContext timers and use ppoll Alex Bligh
2013-08-09 8:12 ` Jan Kiszka
2013-08-09 8:24 ` liu ping fan
2013-08-09 8:33 ` Jan Kiszka
2013-08-09 10:35 ` Alex Bligh
2013-08-09 9:41 ` Stefan Hajnoczi
2013-08-09 14:19 ` Alex Bligh
2013-08-09 14:27 ` Paolo Bonzini
2013-08-09 10:27 ` Paolo Bonzini
2013-08-09 11:18 ` Stefan Hajnoczi
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