[tip: core/rcu] rcu: Enable rcu_normal_after_boot unconditionally for RT

The following commit has been merged into the core/rcu branch of tip: Commit-ID: 36221e109eb20ac111bc3bf3e8d5639aa457c7e0 Gitweb: https://git.kernel.org/tip/36221e109eb20ac111bc3bf3e8d5639aa457c7e0 Author:Julia Cartwright AuthorDate:Tue, 15 Dec 2020 15:16:47 +01:00

[tip: locking/core] squashfs: Make use of local lock in multi_cpu decompressor

The following commit has been merged into the locking/core branch of tip: Commit-ID: fd56200a16c72c7c3ec3e54e06160dfaa5b8dee8 Gitweb: https://git.kernel.org/tip/fd56200a16c72c7c3ec3e54e06160dfaa5b8dee8 Author:Julia Cartwright AuthorDate:Wed, 27 May 2020 22:11:16 +02:00

Re: [patch 10/12] hrtimer: Determine hard/soft expiry mode for hrtimer sleepers on RT

On Fri, Jul 26, 2019 at 08:30:58PM +0200, Thomas Gleixner wrote: > From: Sebastian Andrzej Siewior > > On PREEMPT_RT enabled kernels hrtimers which are not explicitely marked for > hard interrupt expiry mode are moved into soft interrupt context either for > latency reasons or because the hrtimer

Re: [patch V2 1/1] Kconfig: Introduce CONFIG_PREEMPT_RT

ed-by: Daniel Bristot de Oliveira > Acked-by: Frederic Weisbecker > Acked-by: Ingo Molnar > Acked-by: Peter Zijlstra (Intel) > Acked-by: Marc Zyngier > Acked-by: Daniel Wagner > --- I'm excited to see where this goes. Acked-by: Julia Cartwright Julia

[tip:sched/core] kthread: Convert worker lock to raw spinlock

Commit-ID: fe99a4f4d6022ec92f9b52a5528cb9b77513e7d1 Gitweb: https://git.kernel.org/tip/fe99a4f4d6022ec92f9b52a5528cb9b77513e7d1 Author: Julia Cartwright AuthorDate: Tue, 12 Feb 2019 17:25:53 +0100 Committer: Thomas Gleixner CommitDate: Thu, 28 Feb 2019 11:18:38 +0100 kthread: Convert

Re: [PATCH] iommu/dmar: fix buffer overflow during PCI bus notification

On Wed, Feb 20, 2019 at 10:46:31AM -0600, Julia Cartwright wrote: > Commit 57384592c433 ("iommu/vt-d: Store bus information in RMRR PCI > device path") changed the type of the path data, however, the change in > path type was not reflected in size calculations. Update to use

[PATCH] iommu/dmar: fix buffer overflow during PCI bus notification

+0x1f/0x40 The buggy address belongs to the variable: dmar_pci_notify_info_buf+0x40/0x60 Fixes: 57384592c433 ("iommu/vt-d: Store bus information in RMRR PCI device path") Signed-off-by: Julia Cartwright --- drivers/iommu/dmar.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

Re: [RFC PATCH] arm64/fpsimd: Don't disable softirq when touching FPSIMD/SVE state

Hello Julien- On Fri, Feb 08, 2019 at 04:55:13PM +, Julien Grall wrote: > When the kernel is compiled with CONFIG_KERNEL_MODE_NEON, some part of > the kernel may be able to use FPSIMD/SVE. This is for instance the case > for crypto code. > > Any use of FPSIMD/SVE in the kernel are clearly mar

Re: Re: [PATCH v3 1/3] KVM: arm/arm64: vgic: Make vgic_irq->irq_lock a raw_spinlock

On Fri, Feb 01, 2019 at 03:30:58PM +, Julien Grall wrote: > Hi Julien, > > On 07/01/2019 15:06, Julien Thierry wrote: > > vgic_irq->irq_lock must always be taken with interrupts disabled as > > it is used in interrupt context. > > I am a bit confused with the reason here. The code mention tha

[ANNOUNCE] 4.9.146-rt125

Hello RT Folks! I'm pleased to announce the 4.9.146-rt125 stable release. Apologies for an update to the 4.9-rt tree being way overdue. This release is just an update to the new stable 4.9.146 version and no RT specific changes have been made. You can get this release via the git tree at: gi

[PATCH 0/2] Fix watchdogd wakeup deferral on RT

not deferred through ktimersoftd w/ PREEMPT_RT). This patch depends on hrtimer patches carried in the RT patch, and so should therefore land there. Cc: Guenter Roeck Cc: Steffen Trumtrar Cc: Tim Sander Julia Cartwright (2): kthread: convert worker lock to raw spinlock watchdog, rt: prevent

[PATCH 1/2] kthread: convert worker lock to raw spinlock

: Guenter Roeck Reported-and-tested-by: Steffen Trumtrar Reported-by: Tim Sander Signed-off-by: Julia Cartwright --- include/linux/kthread.h | 2 +- kernel/kthread.c| 42 - 2 files changed, 22 insertions(+), 22 deletions(-) diff --git a/include

[PATCH RT 2/2] watchdog, rt: prevent deferral of watchdogd wakeup

dogd to be correct w.r.t. their application needs. Cc: Guenter Roeck Reported-and-tested-by: Steffen Trumtrar Reported-by: Tim Sander Signed-off-by: Julia Cartwright --- drivers/watchdog/watchdog_dev.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/watchdog/watchd

Re: [ANNOUNCE] Submit a topic for the RT Microconference at Linux Plumbers

Hello all- On Tue, Sep 04, 2018 at 01:25:29PM -0400, Steven Rostedt wrote: > Hi RT folks! > > The call for proposals (CfP) is now open for the RT Microconference at > Linux Plumbers in Vancouver, Canada. The topics we are looking at this > year are: > > - How will PREEMPT_RT be maintained (is it

[PATCH RT 11/22] mm/slub: close possible memory-leak in kmem_cache_alloc_bulk()

is limited since I can't find any users here. Cc: stable...@vger.kernel.org Signed-off-by: Sebastian Andrzej Siewior (cherry picked from commit 5022166d3b225bf5e343efb3ea01b3c5a41d69ba) Signed-off-by: Julia Cartwright --- mm/slub.c | 1 + 1 file changed, 1 insertion(+) diff --git a/mm/

[ANNOUNCE] 4.9.115-rt93

Hello RT Folks! I'm pleased to announce the 4.9.115-rt93 stable release. This release is just an update to the new stable 4.9.115 version and no RT specific changes have been made. You can get this release via the git tree at: git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-stable-rt.g

[PATCH RT 10/22] arm*: disable NEON in kernel mode

able each algorithm. Cc: stable...@vger.kernel.org Signed-off-by: Sebastian Andrzej Siewior (cherry picked from commit b3a776555e0d465df138d254d6dc3ac1b718ac6d) Signed-off-by: Julia Cartwright --- arch/arm/Kconfig | 2 +- arch/arm64/crypto/Kconfig | 14 +++--- 2 files changed, 8 i

[PATCH RT 17/22] alarmtimer: Prevent live lock in alarm_cancel()

callback completion on RT. Prevent that by waiting for completion on RT, no change for a non RT kernel. Cc: stable...@vger.kernel.org Signed-off-by: Sebastian Andrzej Siewior (cherry picked from commit 51e376c469bf05f32cb1ceb9e39d31bb92f1f6c8) Signed-off-by: Julia Cartwright --- kernel/time/alarmti

[PATCH RT 18/22] posix-timers: move the rcu head out of the union

effects I am moving the rcu pointer out of the union. Cc: stable...@vger.kernel.org Signed-off-by: Sebastian Andrzej Siewior (cherry picked from commit b8401365af110949f12c7cf1fa86b4c0ea069bbd) Signed-off-by: Julia Cartwright --- include/linux/posix-timers.h | 2 +- kernel/time/posix-timers.c |

[PATCH RT 19/22] locallock: provide {get,put}_locked_ptr() variants

symmetric with the {get,put}_cpu_ptr() per-CPU accessor variants. Signed-off-by: Julia Cartwright Signed-off-by: Sebastian Andrzej Siewior (cherry picked from commit 3d45cf23db4f76cd356ebb0aa4cdaa7d92d1a64e) Signed-off-by: Julia Cartwright --- include/linux/locallock.h | 10 ++ 1 file ch

[PATCH RT 06/22] rcu: Do not include rtmutex_common.h unconditionally

itions in preparation for suppressing lockdep false-positive ->boost_mtx complaints. Without this preparation, architectures not supporting rt_mutex will get build failures. Reported-by: kbuild test robot Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Paul E. McKenney Signed-off-by: Juli

[PATCH RT 12/22] locking: add types.h

c: stable...@vger.kernel.org Signed-off-by: Sebastian Andrzej Siewior (cherry picked from commit 1289b06974d64f244a26455fab699c6a1332f4bc) Signed-off-by: Julia Cartwright --- include/linux/spinlock_types_raw.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/include/linux/spinlock_types_raw.h b/incl

[PATCH RT 09/22] crypto: limit more FPU-enabled sections

timisations to see if it makes sense to keep them for RT. This kernel_fpu_resched() makes the code more preemptible which might hurt performance. Cc: stable...@vger.kernel.org Signed-off-by: Sebastian Andrzej Siewior (cherry picked from commit 0dcc4c1693ef37e166da420ef7c68c7047c996f1) Signed-

[PATCH RT 07/22] rcu: Suppress lockdep false-positive ->boost_mtx complaints

y: Paul E. McKenney Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Julia Cartwright --- kernel/rcu/tree_plugin.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/rcu/tree_plugin.h b/kernel/rcu/tree_plugin.h index 3d18d08e8382..510de72ad8a3 100644 --- a/kerne

[PATCH RT 04/22] futex: Fix OWNER_DEAD fixup

d2...@hirez.programming.kicks-ass.net Signed-off-by: Ingo Molnar Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Julia Cartwright --- kernel/futex.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/kernel/futex.c b/kernel/futex.c index cdd68ba6e3a6..57038131ad3f 1006

[PATCH RT 16/22] block: blk-mq: move blk_queue_usage_counter_release() into process context

orey Minyard). The wq_has_sleeper() check has been suggested by Peter Zijlstra. Cc: stable...@vger.kernel.org Signed-off-by: Sebastian Andrzej Siewior (cherry picked from commit 2d701058d614554cce412a787f00568b9fdffade) Signed-off-by: Julia Cartwright --- block/blk-core.c | 14 ++

[PATCH RT 02/22] futex: Fix more put_pi_state() vs. exit_pi_state_list() races

kaller-b...@googlegroups.com Cc: Fixes: c74aef2d06a9 ("futex: Fix pi_state->owner serialization") Link: http://lkml.kernel.org/r/20171031101853.xpfh72y643kdf...@hirez.programming.kicks-ass.net Signed-off-by: Ingo Molnar Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Julia Cartwright

[PATCH RT 21/22] seqlock: provide the same ordering semantics as mainline

o provide the same guarantee. Also, while we're here, update the usage of ACCESS_ONCE() to use READ_ONCE(). Fixes: e69f15cf77c23 ("seqlock: Prevent rt starvation") Cc: stable...@vger.kernel.org Signed-off-by: Julia Cartwright Signed-off-by: Sebastian Andrzej Siewior (c

[PATCH RT 01/22] futex: Fix pi_state->owner serialization

ge locking rules") Reported-by: Gratian Crisan Signed-off-by: Peter Zijlstra (Intel) Signed-off-by: Thomas Gleixner Cc: dvh...@infradead.org Cc: sta...@vger.kernel.org Link: https://lkml.kernel.org/r/20170922154806.jd3ffltfk24m4...@hirez.programming.kicks-ass.net Signed-off-by: Sebastian Andr

[PATCH RT 14/22] Revert "rt,ntp: Move call to schedule_delayed_work() to helper thread"

led by SYS_clock_adjtime(). Reverting the patch. Cc: stable...@vger.kernel.org Signed-off-by: Sebastian Andrzej Siewior (cherry picked from commit 932c5783d4434250a1019f49ae81b80731dfd4cd) Signed-off-by: Julia Cartwright --- kernel/time/ntp.c | 26 -- 1 file changed, 26 de

[PATCH RT 13/22] net: use task_struct instead of CPU number as the queue owner on -RT

: Kurt Kanzenbach Signed-off-by: Sebastian Andrzej Siewior (cherry picked from commit d3a66ffd1c4f0253076069b10a8223e7b6e80e38) Signed-off-by: Julia Cartwright --- include/linux/netdevice.h | 54 ++- net/core/dev.c| 6 - 2 files changed,

[PATCH RT 05/22] rtmutex: Make rt_mutex_futex_unlock() safe for irq-off callsites

ttps://lkml.kernel.org/r/20180309065630.8283-1-boqun.f...@gmail.com Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Julia Cartwright --- kernel/locking/rtmutex.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/kernel/locking/rtmutex.c b/kernel/locking/rtmutex.c in

[PATCH RT 20/22] squashfs: make use of local lock in multi_cpu decompressor

cesses to the percpu compressor data on the local CPU will be serialized. Cc: stable...@vger.kernel.org Reported-by: Alexander Stein Tested-by: Alexander Stein Signed-off-by: Julia Cartwright Signed-off-by: Sebastian Andrzej Siewior (cherry picked from commit c160736542d7b3d67da32848d2f028b

[PATCH RT 08/22] sched, tracing: Fix trace_sched_pi_setprio() for deboosting

b91473ff6e97 ("sched,tracing: Update trace_sched_pi_setprio()") Link: http://lkml.kernel.org/r/20180524132647.gg6ziuogczdmj...@linutronix.de Signed-off-by: Ingo Molnar Signed-off-by: Julia Cartwright --- include/trace/events/sched.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion

[PATCH RT 03/22] futex: Avoid violating the 10th rule of futex

cks. Luckily the values can only change away and not to the value we're testing, this means we can do a speculative test and double check once we have the wait_lock. Fixes: 73d786bd043e ("futex: Rework inconsistent rt_mutex/futex_q state") Reported-by: Julia Cartwright Reporte

[PATCH RT 15/22] Revert "block: blk-mq: Use swait"

...@vger.kernel.org Signed-off-by: Sebastian Andrzej Siewior (cherry-picked from ca3fd6cf836739fd59eac2f7a9b0261365e818bb) Signed-off-by: Julia Cartwright --- block/blk-core.c | 10 +- block/blk-mq.c | 6 +++--- include/linux/blkdev.h | 2 +- 3 files changed, 9 inserti

[PATCH RT 00/22] Linux 4.9.115-rt94-rc1

q-off callsites Julia Cartwright (4): locallock: provide {get,put}_locked_ptr() variants squashfs: make use of local lock in multi_cpu decompressor seqlock: provide the same ordering semantics as mainline Linux 4.9.115-rt94-rc1 Paul E. McKenney (1): rcu: Suppress lockdep false-positive ->b

[PATCH RT 22/22] Linux 4.9.115-rt94-rc1

4.9.115-rt94-rc1 stable review patch. If you have any objection to the inclusion of this patch, let me know. --- 8< --- 8< --- 8< --- --- localversion-rt | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/localversion-rt b/localversion-rt index e98a1fe050bd..dcc2fd2ca155 100644 -

Re: simple-framebuffer enquire

On Tue, Jun 26, 2018 at 08:44:58PM +0200, Hans de Goede wrote: > Hi, > > On 26-06-18 18:35, Michael Nazzareno Trimarchi wrote: [..] > > cat memblock/reserved > > 0: 0x80004000..0x80007fff > > 1: 0x8010..0x81e030b3 > > 2: 0x8300..0x83007fff > > 3: 0x8400..0x85ff > >

[ANNOUNCE] 4.9.98-rt76

Hello RT Folks! I'm pleased to announce the 4.9.98-rt76 stable release. This release is just an update to the new stable 4.9.98 version and no RT specific changes have been made. Expect a 4.9.98-rt77-rc1 with backports from rt-devel soon. You can get this release via the git tree at: git://g

Re: [LINUX PATCH v8 2/2] memory: pl353: Add driver for arm pl353 static memory controller

On Mon, May 07, 2018 at 10:12:28AM +, Naga Sureshkumar Relli wrote: > Hi Julia, > > Thanks for reviewing the patch and Sorry for my late reply. This patch > went to junk folder, hence I didn't catch this patch. > > From: Julia Cartwright [mailto:ju...@ni.com] [..] >

[PATCH RT 1/2] locallock: provide {get,put}_locked_ptr() variants

Provide a set of locallocked accessors for pointers to per-CPU data; this is useful for dynamically-allocated per-CPU regions, for example. These are symmetric with the {get,put}_cpu_ptr() per-CPU accessor variants. Signed-off-by: Julia Cartwright --- include/linux/locallock.h | 10

[PATCH RT 2/2] squashfs: make use of local lock in multi_cpu decompressor

-by: Julia Cartwright --- fs/squashfs/decompressor_multi_percpu.c | 16 1 file changed, 12 insertions(+), 4 deletions(-) diff --git a/fs/squashfs/decompressor_multi_percpu.c b/fs/squashfs/decompressor_multi_percpu.c index 23a9c28ad8ea..6a73c4fa88e7 100644 --- a/fs/squashfs

[PATCH RT] seqlock: provide the same ordering semantics as mainline

ot;seqlock: Prevent rt starvation") Cc: stable...@vger.kernel.org Signed-off-by: Julia Cartwright --- Found during code inspection of the RT seqlock implementation. Julia include/linux/seqlock.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/include/linux/seqlock.h

Re: [LINUX PATCH v8 2/2] memory: pl353: Add driver for arm pl353 static memory controller

Hello- On Wed, Mar 14, 2018 at 04:14:34PM +0530, nagasureshkumarre...@gmail.com wrote: > From: Naga Sureshkumar Relli I'm pleased to see this patchset revived and resubmitted! It would be easier to follow if you constructed your two patchsets with git format-patch --thread. Or, merge them into

Re: [PATCH RT] Defer migrate_enable migration while task state != TASK_RUNNING

On Fri, Mar 23, 2018 at 01:21:31PM -0400, joe.ko...@concurrent-rt.com wrote: > On Fri, Mar 23, 2018 at 11:59:21AM -0500, Julia Cartwright wrote: > > On Fri, Mar 23, 2018 at 11:09:59AM -0400, joe.ko...@concurrent-rt.com wrote: > > > I see the below kernel splat in 4.9-rt when I

Re: [PATCH RT] Defer migrate_enable migration while task state != TASK_RUNNING

Hey Joe- Thanks for the writeup. On Fri, Mar 23, 2018 at 11:09:59AM -0400, joe.ko...@concurrent-rt.com wrote: > I see the below kernel splat in 4.9-rt when I run a test program that > continually changes the affinity of some set of running pids: > >do not call blocking ops when !TASK_RUNNING

Re: [PATCH v2 1/8] [PATCH 1/8] drivers/peci: Add support for PECI bus driver core

On Wed, Feb 21, 2018 at 08:15:59AM -0800, Jae Hyun Yoo wrote: > This commit adds driver implementation for PECI bus into linux > driver framework. > > Signed-off-by: Jae Hyun Yoo > --- [..] > +static int peci_locked_xfer(struct peci_adapter *adapter, > + struct peci_xfer_m

Re: C tricks for efficient stack zeroing

On Fri, Mar 02, 2018 at 08:50:17PM +0100, Jason A. Donenfeld wrote: [..] > What would be really nice would be to somehow keep track of the > maximum stack depth, and just before the function returns, clear from > the maximum depth to its stack base, all in one single call. This > would not only mak

[ANNOUNCE] 4.9.84-rt62

Hello RT Folks! I'm pleased to announce the 4.9.84-rt62 stable release. This release is just an update to the new stable 4.9.84 version and no RT specific changes have been made. You can get this release via the git tree at: git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-stable-rt.git

Re: [PATCH 1/2] kernel/sofirq: consolidate common code in __tasklet_schedule() + _hi_

On Thu, Feb 15, 2018 at 03:07:07PM -0500, Steven Rostedt wrote: > On Thu, 15 Feb 2018 18:20:41 +0100 > Sebastian Andrzej Siewior wrote: > > > -void __tasklet_schedule(struct tasklet_struct *t) > > +static void __tasklet_schedule_common(struct tasklet_struct *t, > > +

[PATCH 4.9.y] ubifs: Massage assert in ubifs_xattr_set() wrt. init_xattrs

Weinberger Cc: sta...@vger.kernel.org (julia: massaged to apply to 4.9.y, which doesn't contain fscrypto support) Signed-off-by: Julia Cartwright --- Hey all- We reproduced the issue fixed upstream by Xiaolei Li's commit in 4.9.y, with the very similar backtrace: UBIFS assert

Re: [patch v18 1/4] drivers: jtag: Add JTAG core driver

On Mon, Jan 29, 2018 at 04:31:42PM +0200, Oleksandr Shamray wrote: > Initial patch for JTAG driver > JTAG class driver provide infrastructure to support hardware/software > JTAG platform drivers. It provide user layer API interface for flashing > and debugging external devices which equipped with J

Re: [patch v17 1/4] drivers: jtag: Add JTAG core driver

Hello Oleksandr- On Tue, Jan 16, 2018 at 09:18:56AM +0200, Oleksandr Shamray wrote: [..] > v16->v17 > Comments pointed by Julia Cartwright More review feedback below: [..] > +++ b/drivers/jtag/jtag.c [..] > +static long jtag_ioctl(struct file *file, unsigned int cmd, unsig

Re: [ANNOUNCE] 4.9.76-rt61

On Tue, Jan 16, 2018 at 11:11:32PM +, Bernhard Landauer wrote: > Ah. Working now after adding in validpgpkeys array in the PKGBUILD. This was the first v4.9-rt release since Steven handed over his maintainership , so that would explain why it would be signed by a different key (although, my ke

[ANNOUNCE] 4.9.76-rt61

Hello RT Folks! I'm pleased to announce the 4.9.76-rt61 stable release. This release is just an update to the new stable 4.9.76 version and no RT specific changes have been made. You can get this release via the git tree at: git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-stable-rt.git

Re: [patch v16 1/4] drivers: jtag: Add JTAG core driver

Hello Oleksandr- I have a few comments below. On Fri, Jan 12, 2018 at 07:08:26PM +0200, Oleksandr Shamray wrote: > Initial patch for JTAG driver > JTAG class driver provide infrastructure to support hardware/software > JTAG platform drivers. It provide user layer API interface for flashing > and

Re: [PATCH] futex: Avoid violating the 10th rule of futex

t; > So instead of doing 3 consecutive wait_lock sections with who knows > what races, we do it all in a single section. Additionally, the usage > of pi_state->owner in fixup_owner() was only safe because only the > rt_mutex owner would modify it, which this additional case wrecks. >

Re: [ANNOUNCE] 4.1.46-rt52

On Mon, Dec 11, 2017 at 03:01:39PM -0600, Corey Minyard wrote: > On 12/11/2017 02:20 PM, Julia Cartwright wrote: > > On Mon, Dec 11, 2017 at 01:04:58PM -0600, Corey Minyard wrote: [..] > > > > > > > > Sebastian Andrzej Siewior (2): > > > >

Re: [ANNOUNCE] 4.1.46-rt52

On Mon, Dec 11, 2017 at 01:04:58PM -0600, Corey Minyard wrote: > On 11/29/2017 05:13 PM, Julia Cartwright wrote: > > Hello RT Folks! > > > > I'm pleased to announce the 4.1.46-rt52 stable release. > > > > You can get this release via the git tree at: &g

Re: PI futexes + lock stealing woes

On Thu, Dec 07, 2017 at 08:57:59AM -0600, Gratian Crisan wrote: > > Peter Zijlstra writes: > > The below compiles and boots, but is otherwise untested. Could you give > > it a spin? > > Thank you! Yes, I'll start a test now. I gave it a spin with my minimal reproducing case w/ the strategic msle

[PATCH] trace-cmd: add plugin for decoding syscalls/sys_enter_futex

, and tries to be intelligent about the intent of specific arguments (for example, waking operations use 'val' as an integer count, not just an arbitrary value). It doesn't do a full decode of the FUTEX_WAKE_OP's 'val3' argument, however, this is a good starting point. S

[PATCH v2 2/3] net: macb: reduce scope of rx_fs_lock-protected regions

et: macb: Added support for RX filtering") Cc: Rafal Ozieblo Cc: Julia Lawall Acked-by: Nicolas Ferre Signed-off-by: Julia Cartwright --- drivers/net/ethernet/cadence/macb_main.c | 16 +++- 1 file changed, 11 insertions(+), 5 deletions(-) diff --git a/drivers/net/ethernet/ca

[PATCH v2 0/3] macb rx filter cleanups

Here's a proper patchset based on net-next. v1 -> v2: - Rebased on net-next - Add Nicolas's Acks - Reorder commits, putting the list_empty() cleanups prior to the others. - Added commit reverting the GFP_ATOMIC change. Julia Cartwright (3): net: macb: kill useless use

[PATCH v2 1/3] net: macb: kill useless use of list_empty()

The list_for_each_entry() macro already handles the case where the list is empty (by not executing the loop body). It's not necessary to handle this case specially, so stop doing so. Cc: Rafal Ozieblo Acked-by: Nicolas Ferre Signed-off-by: Julia Cartwright --- drivers/net/ethernet/ca

[PATCH v2 3/3] net: macb: change GFP_ATOMIC to GFP_KERNEL

Now that the rx_fs_lock is no longer held across allocation, it's safe to use GFP_KERNEL for allocating new entries. This reverts commit 81da3bf6e3f88 ("net: macb: change GFP_KERNEL to GFP_ATOMIC"). Cc: Julia Lawall Signed-off-by: Julia Cartwright --- drivers/net/ethernet/cade

[PATCH 2/2] net: macb: kill useless use of list_empty()

The list_for_each_entry() macro already handles the case where the list is empty (by not executing the loop body). It's not necessary to handle this case specially, so stop doing so. Cc: Rafal Ozieblo Signed-off-by: Julia Cartwright --- This is an additional cleanup patch found when looki

[PATCH 1/2] net: macb: reduce scope of rx_fs_lock-protected regions

et: macb: Added support for RX filtering") Cc: Rafal Ozieblo Cc: Julia Lawall Signed-off-by: Julia Cartwright --- While Julia Lawall's cocci-generated patch fixes the problem, the right solution is to obviate the problem altogether. Thanks, The Other Julia drivers/net/ethernet

Re: PI futexes + lock stealing woes

On Fri, Dec 01, 2017 at 12:11:15PM -0800, Darren Hart wrote: > On Wed, Nov 29, 2017 at 11:56:05AM -0600, Julia Cartwright wrote: > > Hey Thomas, Peter- > > > > Gratian and I have been debugging into a nasty and difficult race w/ > > futexes seemingly the culprit. T

[ANNOUNCE] 4.1.46-rt52

51 by applying the incremental patch: http://www.kernel.org/pub/linux/kernel/projects/rt/4.1/incr/patch-4.1.46-rt51-rt52.patch.xz Enjoy! Julia Changes from v4.1.46-rt51: --- Julia Cartwright (2): workqueue: fixup rcu check for RT Linux 4.1.46-rt52 Sebastian Andrzej Siewior (2):

PI futexes + lock stealing woes

Hey Thomas, Peter- Gratian and I have been debugging into a nasty and difficult race w/ futexes seemingly the culprit. The original symptom we were seeing was a seemingly spurious -EDEADLK from a futex(LOCK_PI) operation. On further analysis, however, it appears the thread which gets the spuriou

[PATCH RT 4/4] Linux 4.1.46-rt52-rc1

4.1.46-rt52-rc1 stable review patch. If you have any objection to the inclusion of this patch, let me know. --- 8< --- 8< --- 8< --- --- localversion-rt | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/localversion-rt b/localversion-rt index 75493460c41f..d42746076d9b 100644 --

[PATCH RT 3/4] kernel/hrtimer: migrate deferred timer on CPU down

Signed-off-by: Sebastian Andrzej Siewior (cherry picked from commit b3c08bffdcdd23f1b3ca8d9c01e3b8a715e03d46) Signed-off-by: Julia Cartwright --- kernel/time/hrtimer.c | 5 + 1 file changed, 5 insertions(+) diff --git a/kernel/time/hrtimer.c b/kernel/time/hrtimer.c index 2c6be169bdc7..75c990b0052

[PATCH RT 0/4] Linux 4.1.46-rt52-rc1

incr/patch-4.1.46-rt51-rt52-rc1.patch.xz Julia Cartwright (2): workqueue: fixup rcu check for RT Linux 4.1.46-rt52-rc1 Sebastian Andrzej Siewior (2): PM / CPU: replace raw_notifier with atomic_notifier (fixup) kernel/hrtimer: migrate deferred timer on CPU down kernel/cpu_pm.c

[PATCH RT 2/4] workqueue: fixup rcu check for RT

ual_register+0x26/0x50 wq_sysfs_init+0x12/0x14 do_one_initcall+0x88/0x1b0 ? parse_args+0x190/0x410 kernel_init_freeable+0x204/0x299 ? rest_init+0x140/0x140 kernel_init+0x9/0xf0 ret_from_fork+0x42/0x70 ? rest_init+0x140/0x140 Reported-by: Sebastian Andrzej Siewior

[PATCH RT 1/4] PM / CPU: replace raw_notifier with atomic_notifier

Signed-off-by: Sebastian Andrzej Siewior (cherry picked from commit f648e23dac72deef07f25e05fc09dbbc209dbd33) Signed-off-by: Julia Cartwright --- kernel/cpu_pm.c | 7 +++ 1 file changed, 7 insertions(+) diff --git a/kernel/cpu_pm.c b/kernel/cpu_pm.c index 9da42f83ee03..d1d1c3961553 100644 --- a/k

[PATCH] futex: Drop now unnecessary check in exit_pi_state()

er Zijlstra Cc: Darren Hart Signed-off-by: Julia Cartwright --- I'm not sure my analysis is 100% correct here, so please carefully think through it, as I'm sure you all always do when futex patches hit your mailbox :). Julia kernel/futex.c | 16 ++-- 1 file changed, 2 in

Re: [PATCH 1/2] IB/hfi1: Use preempt_{dis,en}able_nort()

On Thu, Oct 05, 2017 at 01:53:05PM -0300, Arnaldo Carvalho de Melo wrote: > Em Thu, Oct 05, 2017 at 09:17:44AM -0500, Julia Cartwright escreveu: > > On Tue, Oct 03, 2017 at 12:49:19PM -0300, Arnaldo Carvalho de Melo wrote: > > > +++ b/drivers/infiniband/hw/hfi1/pio.c > &

Re: [PATCH 1/2] IB/hfi1: Use preempt_{dis,en}able_nort()

On Thu, Oct 05, 2017 at 06:16:23PM +0200, Thomas Gleixner wrote: > On Thu, 5 Oct 2017, Julia Cartwright wrote: > > > On Thu, Oct 05, 2017 at 11:55:39AM -0400, Steven Rostedt wrote: > > > On Thu, 5 Oct 2017 10:37:59 -0500 > > > Julia Cartwright wrote: > > >

Re: [PATCH 1/2] IB/hfi1: Use preempt_{dis,en}able_nort()

On Thu, Oct 05, 2017 at 11:55:39AM -0400, Steven Rostedt wrote: > On Thu, 5 Oct 2017 10:37:59 -0500 > Julia Cartwright wrote: > > > On Thu, Oct 05, 2017 at 05:27:30PM +0200, Thomas Gleixner wrote: > > > On Thu, 5 Oct 2017, Julia Cartwright wrote: > > > >

Re: [PATCH 1/2] IB/hfi1: Use preempt_{dis,en}able_nort()

On Thu, Oct 05, 2017 at 05:27:30PM +0200, Thomas Gleixner wrote: > On Thu, 5 Oct 2017, Julia Cartwright wrote: > > On Tue, Oct 03, 2017 at 12:49:19PM -0300, Arnaldo Carvalho de Melo wrote: > > > - preempt_disable(); > > > + preempt_disable_nort(); > > >

Re: [PATCH 1/2] IB/hfi1: Use preempt_{dis,en}able_nort()

raw_spin_lock > <-vprintk_emit > [512258.614119] sm-3297 16 d...112 359465349138789: log_store <-vprintk_emit > [512258.614127] sm-3297 16 .12 359465349139068: migrate_disable > <-vprintk_emit > > According to a discussion (see Link: below) on the linux-rt-users &g

Re: [PATCH v2 37/40] tracing: Add inter-event hist trigger Documentation

On Tue, Sep 05, 2017 at 04:57:49PM -0500, Tom Zanussi wrote: > Add background and details on inter-event hist triggers, including > hist variables, synthetic events, and actions. > > Signed-off-by: Tom Zanussi > Signed-off-by: Baohong Liu > --- > Documentation/trace/events.txt | 385 >

Re: [ANNOUNCE] 4.1.42-rt50

On Thu, Aug 17, 2017 at 09:30:28AM +0200, Sebastian Andrzej Siewior wrote: > On 2017-08-16 15:42:28 [-0500], Julia Cartwright wrote: [..] > > diff --git a/kernel/cpu_pm.c b/kernel/cpu_pm.c > > index 9656a3c36503..9da42f83ee03 100644 > > --- a/kernel/cpu_pm.c > > +++ b/ke

[ANNOUNCE] 4.1.42-rt50

49 by applying the incremental patch: http://www.kernel.org/pub/linux/kernel/projects/rt/4.1/incr/patch-4.1.42-rt49-rt50.patch.xz Enjoy! Julia Changes from v4.1.42-rt49: --- Alex Shi (1): cpu_pm: replace raw_notifier to atomic_notifier Julia Cartwright (1): Linux 4.1.42-rt50

[PATCH RT 2/6] rtmutex: Make lock_killable work

ing_state() unconditionaly. Cc: rt-sta...@vger.kernel.org Signed-off-by: Thomas Gleixner Signed-off-by: Sebastian Andrzej Siewior (cherry picked from commit 9edcb2cd71ff3684755f52129538260efa382789) Signed-off-by: Julia Cartwright --- kernel/locking/rtmutex.c | 19 +++ 1 file changed, 7 i

[PATCH RT 0/6] Linux 4.1.42-rt50-rc1

: http://www.kernel.org/pub/linux/kernel/projects/rt/4.1/incr/patch-4.1.42-rt49-rt50-rc1.patch.xz Alex Shi (1): cpu_pm: replace raw_notifier to atomic_notifier Julia Cartwright (1): Linux 4.1.42-rt50-rc1 Peter Zijlstra (2

[PATCH RT 6/6] Linux 4.1.42-rt50-rc1

4.1.42-rt50-rc1 stable review patch. If you have any objection to the inclusion of this patch, let me know. --- 8< --- 8< --- 8< --- --- localversion-rt | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/localversion-rt b/localversion-rt index 4b7dca68a5b4..e8a9a36bb066 100644 --

[PATCH RT 5/6] cpu_pm: replace raw_notifier to atomic_notifier

nders Roxell Cc: Rik van Riel Cc: Steven Rostedt Cc: Rafael J. Wysocki Cc: Daniel Lezcano Cc: linux-rt-users Signed-off-by: Sebastian Andrzej Siewior (cherry picked from commit df0fba5ba4c69cdc68bdaa5ca7a4100d959fdd07) Signed-off-by: Julia Cartwright --- kernel/cpu_pm.c | 43 ++---

[PATCH RT 1/6] lockdep: Fix per-cpu static objects

c: kernel test robot Cc: LKP Link: http://lkml.kernel.org/r/20170320114108.kbvcsuepem45j...@hirez.programming.kicks-ass.net Signed-off-by: Thomas Gleixner (cherry picked from commit c9fe9196079f738c89c3ffcdce3fbe142ac3f3c4) Signed-off-by: Julia Cartwright --- include/linux/smp.h | 12

[PATCH RT 3/6] sched: Prevent task state corruption by spurious lock wakeup

off-by: Thomas Gleixner Signed-off-by: Sebastian Andrzej Siewior (cherry picked from commit 2f9f24e15088d2ef3244d088a9604d7e98c9c625) Signed-off-by: Julia Cartwright --- kernel/sched/core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 0d3

[PATCH RT 4/6] sched: Remove TASK_ALL

mas Gleixner Signed-off-by: Peter Zijlstra (Intel) Signed-off-by: Sebastian Andrzej Siewior (cherry picked from commit a1762267d95649bddf6e94e7e3305e0207d0fff0) Signed-off-by: Julia Cartwright --- include/linux/sched.h | 1 - 1 file changed, 1 deletion(-) diff --git a/include/linux/sched.h

Re: [PATCH] [RFC] tpm_tis: tpm_tcg_flush() after iowrite*()s

On Fri, Aug 04, 2017 at 04:56:51PM -0500, Haris Okanovic wrote: > I have a latency issue using a SPI-based TPM chip with tpm_tis driver > from non-rt usermode application, which induces ~400 us latency spikes > in cyclictest (Intel Atom E3940 system, PREEMPT_RT_FULL kernel). > > The spikes are caus

[ANNOUNCE] 4.1.42-rt49

Hello RT Folks, I'm happy to announce the 4.1.42-rt49 stable release. This release is just an update to the new stable 4.1.42 version and no RT specific changes have been made. You can get this release via the git tree at: git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-stable-rt.git

Re: BUG: unable to handle kernel NULL pointer dereference at 0000000000000038 !//RE: kernel BUG at kernel/locking/rtmutex.c:1027

On Tue, Jun 27, 2017 at 05:47:41AM +, Feng Feng24 Liu wrote: > Hi, Julia > Thanks for your kindly hit. I will try this patch > The problem is accidental. I will try to reproduce it. > BTW, could you help to give the link about the emails which > discuss about " nsfs: mar

Re: BUG: unable to handle kernel NULL pointer dereference at 0000000000000038 !//RE: kernel BUG at kernel/locking/rtmutex.c:1027

On Mon, Jun 26, 2017 at 04:54:36PM +0200, Sebastian Andrzej Siewior wrote: > On 2017-06-26 10:24:18 [-0400], Steven Rostedt wrote: > > > CPU: 17 PID: 1738811 Comm: ip Not tainted 4.4.70-thinkcloud-nfv #1 > > > Hardware name: LENOVO System x3650 M5: -[8871AC1]-/01GR174, BIOS > > > -[TCE124M-2.10]

[ANNOUNCE] 4.1.40-rt48

Hello RT Folks, I'm happy to announce the 4.1.40-rt48 stable release. This release is just an update to the new stable 4.1.40 version and no RT specific changes have been made. You can get this release via the git tree at: git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-stable-rt.git

[PATCH] md/raid5: make use of spin_lock_irq over local_irq_disable + spin_lock

: Alexander GQ Gerasiov Signed-off-by: Julia Cartwright --- Hey All- While this fixes a problem on RT primarily, the patch is equally applicable upstream, as such probably makes sense to be pulled through the md tree. It may also make sense to be pulled directly into rt-devel. Alexander- I turned your

Re: [PATCH RT 1/1] remoteproc: Prevent schedule while atomic

On Thu, Mar 23, 2017 at 10:26:49AM +, Lee Jones wrote: > On Thu, 23 Mar 2017, Lionel DEBIEVE wrote: > > > On 03/22/2017 07:47 PM, Julia Cartwright wrote: > > > On Wed, Mar 22, 2017 at 01:30:12PM -0500, Grygorii Strashko wrote: > > >> On 03/22/2017 01:01 PM,

Re: [PATCH v4 1/4] pinctrl: rockchip: remove unnecessary locking

On Thu, Mar 23, 2017 at 09:01:43PM +0100, Heiko St?bner wrote: > Am Donnerstag, 23. März 2017, 13:29:10 CET schrieb Julia Cartwright: > > On Thu, Mar 23, 2017 at 06:55:50PM +0100, Heiko St?bner wrote: > > > Am Donnerstag, 23. März 2017, 17:51:53 CET schrieb John Keeping: >

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