From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, Xunlei Pang <xlpang@redhat.com>,
"Peter Zijlstra (Intel)" <peterz@infradead.org>,
Daniel Bristot de Oliveira <bristot@redhat.com>,
Juri Lelli <juri.lelli@arm.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
Luca Abeni <luca.abeni@santannapisa.it>,
Mike Galbraith <efault@gmx.de>,
Steven Rostedt <rostedt@goodmis.org>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@kernel.org>,
Ben Hutchings <ben.hutchings@codethink.co.uk>
Subject: [PATCH 4.9 13/47] sched/deadline: Zero out positive runtime after throttling constrained tasks
Date: Mon, 22 Jan 2018 09:45:24 +0100 [thread overview]
Message-ID: <20180122083926.584172432@linuxfoundation.org> (raw)
In-Reply-To: <20180122083925.568134913@linuxfoundation.org>
4.9-stable review patch. If anyone has any objections, please let me know.
------------------
From: Xunlei Pang <xlpang@redhat.com>
commit ae83b56a56f8d9643dedbee86b457fa1c5d42f59 upstream.
When a contrained task is throttled by dl_check_constrained_dl(),
it may carry the remaining positive runtime, as a result when
dl_task_timer() fires and calls replenish_dl_entity(), it will
not be replenished correctly due to the positive dl_se->runtime.
This patch assigns its runtime to 0 if positive after throttling.
Signed-off-by: Xunlei Pang <xlpang@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Daniel Bristot de Oliveira <bristot@redhat.com>
Cc: Juri Lelli <juri.lelli@arm.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Luca Abeni <luca.abeni@santannapisa.it>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Fixes: df8eac8cafce ("sched/deadline: Throttle a constrained deadline task activated after the deadline)
Link: http://lkml.kernel.org/r/1494421417-27550-1-git-send-email-xlpang@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
kernel/sched/deadline.c | 2 ++
1 file changed, 2 insertions(+)
--- a/kernel/sched/deadline.c
+++ b/kernel/sched/deadline.c
@@ -723,6 +723,8 @@ static inline void dl_check_constrained_
if (unlikely(dl_se->dl_boosted || !start_dl_timer(p)))
return;
dl_se->dl_throttled = 1;
+ if (dl_se->runtime > 0)
+ dl_se->runtime = 0;
}
}
next prev parent reply other threads:[~2018-01-22 8:45 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-22 8:45 [PATCH 4.9 00/47] 4.9.78-stable review Greg Kroah-Hartman
2018-01-22 8:45 ` [PATCH 4.9 01/47] libnvdimm, btt: Fix an incompatibility in the log layout Greg Kroah-Hartman
2018-01-22 8:45 ` [PATCH 4.9 02/47] scsi: sg: disable SET_FORCE_LOW_DMA Greg Kroah-Hartman
2018-01-22 8:45 ` [PATCH 4.9 03/47] futex: Prevent overflow by strengthen input validation Greg Kroah-Hartman
2018-01-22 8:45 ` [PATCH 4.9 04/47] ALSA: seq: Make ioctls race-free Greg Kroah-Hartman
2018-01-22 8:45 ` [PATCH 4.9 05/47] ALSA: pcm: Remove yet superfluous WARN_ON() Greg Kroah-Hartman
2018-01-22 8:45 ` [PATCH 4.9 06/47] ALSA: hda - Apply headphone noise quirk for another Dell XPS 13 variant Greg Kroah-Hartman
2018-01-22 8:45 ` [PATCH 4.9 07/47] ALSA: hda - Apply the existing quirk to iMac 14,1 Greg Kroah-Hartman
2018-01-22 8:45 ` [PATCH 4.9 08/47] timers: Unconditionally check deferrable base Greg Kroah-Hartman
2018-01-22 8:45 ` [PATCH 4.9 09/47] af_key: fix buffer overread in verify_address_len() Greg Kroah-Hartman
2018-01-22 8:45 ` [PATCH 4.9 10/47] af_key: fix buffer overread in parse_exthdrs() Greg Kroah-Hartman
2018-01-22 8:45 ` [PATCH 4.9 11/47] iser-target: Fix possible use-after-free in connection establishment error Greg Kroah-Hartman
2018-01-22 8:45 ` [PATCH 4.9 12/47] scsi: hpsa: fix volume offline state Greg Kroah-Hartman
2018-01-22 8:45 ` Greg Kroah-Hartman [this message]
2018-01-22 8:45 ` [PATCH 4.9 14/47] x86/retpoline: Fill RSB on context switch for affected CPUs Greg Kroah-Hartman
2018-01-22 8:45 ` [PATCH 4.9 15/47] x86/retpoline: Add LFENCE to the retpoline/RSB filling RSB macros Greg Kroah-Hartman
2018-01-22 8:45 ` [PATCH 4.9 16/47] objtool: Improve error message for bad file argument Greg Kroah-Hartman
2018-01-22 8:45 ` [PATCH 4.9 17/47] x86/cpufeature: Move processor tracing out of scattered features Greg Kroah-Hartman
2018-01-22 8:45 ` [PATCH 4.9 18/47] module: Add retpoline tag to VERMAGIC Greg Kroah-Hartman
2018-01-22 8:45 ` [PATCH 4.9 19/47] x86/mm/pkeys: Fix fill_sig_info_pkey Greg Kroah-Hartman
2018-01-22 8:45 ` [PATCH 4.9 20/47] x86/tsc: Fix erroneous TSC rate on Skylake Xeon Greg Kroah-Hartman
2018-01-22 8:45 ` [PATCH 4.9 21/47] pipe: avoid round_pipe_size() nr_pages overflow on 32-bit Greg Kroah-Hartman
2018-01-22 8:45 ` [PATCH 4.9 22/47] x86/apic/vector: Fix off by one in error path Greg Kroah-Hartman
2018-01-22 8:45 ` [PATCH 4.9 23/47] perf tools: Fix build with ARCH=x86_64 Greg Kroah-Hartman
2018-01-22 8:45 ` [PATCH 4.9 24/47] Input: ALPS - fix multi-touch decoding on SS4 plus touchpads Greg Kroah-Hartman
2018-01-22 8:45 ` [PATCH 4.9 25/47] Input: 88pm860x-ts - fix child-node lookup Greg Kroah-Hartman
2018-01-22 8:45 ` [PATCH 4.9 26/47] Input: twl6040-vibra " Greg Kroah-Hartman
2018-01-22 8:45 ` [PATCH 4.9 27/47] Input: twl4030-vibra - fix sibling-node lookup Greg Kroah-Hartman
2018-01-22 8:45 ` [PATCH 4.9 28/47] tracing: Fix converting enums from the map in trace_event_eval_update() Greg Kroah-Hartman
2018-01-22 8:45 ` [PATCH 4.9 29/47] phy: work around phys references to usb-nop-xceiv devices Greg Kroah-Hartman
2018-01-22 8:45 ` [PATCH 4.9 30/47] ARM: sunxi_defconfig: Enable CMA Greg Kroah-Hartman
2018-01-22 8:45 ` [PATCH 4.9 31/47] ARM: dts: kirkwood: fix pin-muxing of MPP7 on OpenBlocks A7 Greg Kroah-Hartman
2018-01-22 8:45 ` [PATCH 4.9 32/47] can: peak: fix potential bug in packet fragmentation Greg Kroah-Hartman
2018-01-22 8:45 ` [PATCH 4.9 33/47] scripts/gdb/linux/tasks.py: fix get_thread_info Greg Kroah-Hartman
2018-01-22 8:45 ` [PATCH 4.9 34/47] proc: fix coredump vs read /proc/*/stat race Greg Kroah-Hartman
2018-01-22 8:45 ` [PATCH 4.9 35/47] libata: apply MAX_SEC_1024 to all LITEON EP1 series devices Greg Kroah-Hartman
2018-01-22 8:45 ` [PATCH 4.9 36/47] workqueue: avoid hard lockups in show_workqueue_state() Greg Kroah-Hartman
2018-01-22 8:45 ` [PATCH 4.9 37/47] dm btree: fix serious bug in btree_split_beneath() Greg Kroah-Hartman
2018-01-22 8:45 ` [PATCH 4.9 38/47] dm thin metadata: THIN_MAX_CONCURRENT_LOCKS should be 6 Greg Kroah-Hartman
2018-01-22 8:45 ` [PATCH 4.9 39/47] arm64: KVM: Fix SMCCC handling of unimplemented SMC/HVC calls Greg Kroah-Hartman
2018-01-22 8:45 ` [PATCH 4.9 40/47] x86/cpu, x86/pti: Do not enable PTI on AMD processors Greg Kroah-Hartman
2018-01-22 8:45 ` [PATCH 4.9 41/47] usbip: fix warning in vhci_hcd_probe/lockdep_init_map Greg Kroah-Hartman
2018-01-22 8:45 ` [PATCH 4.9 42/47] x86/mce: Make machine check speculation protected Greg Kroah-Hartman
2018-01-22 8:45 ` [PATCH 4.9 43/47] retpoline: Introduce start/end markers of indirect thunk Greg Kroah-Hartman
2018-01-22 8:45 ` [PATCH 4.9 44/47] kprobes/x86: Blacklist indirect thunk functions for kprobes Greg Kroah-Hartman
2018-01-22 8:45 ` [PATCH 4.9 45/47] kprobes/x86: Disable optimizing on the function jumps to indirect thunk Greg Kroah-Hartman
2018-01-22 8:45 ` [PATCH 4.9 46/47] x86/pti: Document fix wrong index Greg Kroah-Hartman
2018-01-22 8:45 ` [PATCH 4.9 47/47] x86/retpoline: Optimize inline assembler for vmexit_fill_RSB Greg Kroah-Hartman
2018-01-22 18:50 ` [PATCH 4.9 00/47] 4.9.78-stable review Naresh Kamboju
2018-01-22 19:09 ` Guenter Roeck
2018-01-22 20:08 ` Shuah Khan
2018-01-23 0:08 ` kernelci.org bot
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=20180122083926.584172432@linuxfoundation.org \
--to=gregkh@linuxfoundation.org \
--cc=ben.hutchings@codethink.co.uk \
--cc=bristot@redhat.com \
--cc=efault@gmx.de \
--cc=juri.lelli@arm.com \
--cc=linux-kernel@vger.kernel.org \
--cc=luca.abeni@santannapisa.it \
--cc=mingo@kernel.org \
--cc=peterz@infradead.org \
--cc=rostedt@goodmis.org \
--cc=stable@vger.kernel.org \
--cc=tglx@linutronix.de \
--cc=torvalds@linux-foundation.org \
--cc=xlpang@redhat.com \
/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;
as well as URLs for NNTP newsgroup(s).