On Sat, Mar 06, 2021 at 01:36:58PM -0800, Davidlohr Bueso wrote:
> Ever since RCU was converted to softirq, it has no users.
>
> Signed-off-by: Davidlohr Bueso
That was a long time ago...
Acked-by: Paul E. McKenney
> ---
> include/linux/interrupt.h | 1 -
> kernel/softi
On Fri, Mar 05, 2021 at 02:41:11PM +0100, Frederic Weisbecker wrote:
> On Wed, Mar 03, 2021 at 11:49:45AM -0800, Paul E. McKenney wrote:
> > Hello, Frederic!
> >
> > I don't see the following commit in mainline, but figured I should
> > check with you guys to see if the
On Fri, Mar 05, 2021 at 01:59:24PM -0500, Alan Stern wrote:
> On Fri, Mar 05, 2021 at 10:26:50AM -0800, Paul E. McKenney wrote:
> > On Fri, Mar 05, 2021 at 04:41:49PM +0100, Björn Töpel wrote:
> > > On 2021-03-05 16:36, Alan Stern wrote:
> > > > On Fri, Mar 05, 2
txt; provide Linux-kernel
memory model")
[ paulmck: Apply Alan Stern commit-log feedback. ]
Signed-off-by: Björn Töpel
Signed-off-by: Paul E. McKenney
diff --git a/tools/memory-model/Documentation/explanation.txt
b/tools/memory-model/Documentation/explanation.txt
index f9d61
On Fri, Mar 05, 2021 at 11:28:23AM +0100, Björn Töpel wrote:
> From: Björn Töpel
>
> A misspelled invokation of git-grep, revealed that
> smp_mb__after_spinlock() was misspelled in explaination.txt.
>
> Add missing "_" to smp_mb__after_spinlock().
>
> Fixes: 1c27b644c0fd ("Automate
On Thu, Mar 04, 2021 at 04:27:53PM -0500, Alan Stern wrote:
> On Thu, Mar 04, 2021 at 11:05:15AM -0800, Paul E. McKenney wrote:
> > On Thu, Mar 04, 2021 at 10:35:24AM -0500, Alan Stern wrote:
> > > On Wed, Mar 03, 2021 at 09:04:07PM -0800, Paul E. McKenney wrote:
> > > &
l the next random interrupt.
> >
> > Perform sanity checks to report these situations.
> >
> > Cc: Peter Zijlstra
> > Cc: Thomas Gleixner
> > Cc: Ingo Molnar
> > Cc: Rafael J. Wysocki
> > Signed-off-by: Frederic Weisbecker
> > Signed-o
On Thu, Mar 04, 2021 at 04:44:34PM +0100, maranget wrote:
>
>
> > On 3 Mar 2021, at 21:22, Alan Stern wrote:
> >
> >>>
> >>> Local variables absolutely should be treated just like CPU registers, if
> >>> possible. In fact, the compiler has the option of keeping local
> >>> variables stored
On Thu, Mar 04, 2021 at 10:35:24AM -0500, Alan Stern wrote:
> On Wed, Mar 03, 2021 at 09:04:07PM -0800, Paul E. McKenney wrote:
> > On Wed, Mar 03, 2021 at 10:21:01PM -0500, Alan Stern wrote:
> > > On Wed, Mar 03, 2021 at 02:03:48PM -0800, Paul E. McKenney wrote:
> > > &
On Wed, Mar 03, 2021 at 10:21:01PM -0500, Alan Stern wrote:
> On Wed, Mar 03, 2021 at 02:03:48PM -0800, Paul E. McKenney wrote:
> > On Wed, Mar 03, 2021 at 03:22:46PM -0500, Alan Stern wrote:
> > > On Wed, Mar 03, 2021 at 09:40:22AM -0800, Paul E. McKenney wrote:
> > > &
On Thu, Mar 04, 2021 at 12:41:05PM +1100, Stephen Rothwell wrote:
> Hi all,
>
> After merging the rcu tree, today's linux-next build (htmldocs) produced
> this warning:
>
> kernel/rcu/tree.c:3824: warning: expecting prototype for
> start_poll_state_synchronize_rcu(). Prototype was for
>
Hello!
If there is a sufficient delay between reading the watchdog clock and the
clock under test, the clock under test will be marked unstable through no
fault of its own. This series checks for this, doing limited retries
to get a good set of clock reads. If the clock is marked unstable
and
Hello!
This series contains LKMM updates:
1. Update rcu_dereference.rst reference, courtesy of Mauro Carvalho
Chehab.
2. tools/memory-model: Remove reference to atomic_ops.rst, courtesy
of Akira Yokosawa.
3. tools/memory-model: Add access-marking documentation.
Hello!
This series contains KCSAN updates:
1. kcsan, debugfs: Move debugfs file creation out of early init,
courtesy of Marco Elver.
2. Make test follow KUnit style recommendations, courtesy of
Marco Elver.
3. Switch to KUNIT_CASE_PARAM for parameterized tests,
Hello!
This series contains updates to the torture-test scripting, perhaps most
notably the addition of kvm-again.sh, which allows rerunning an earlier
test without having to rebuild all the kernels.
1. Don't rerun failed rcutorture builds.
2. Allow 1G of memory for torture.sh kvfree
Hello!
This series contains a couple of torture-test updates:
1. Replace torture_init_begin string with %s, courtesy of Stephen
Zhang.
2. Replace rcu_torture_stall string with %s, courtesy of Stephen
Zhang.
Thanx, Paul
Hello!
This series contains a couple of updates for the RCU-tasks family:
1. rcu-tasks: Rectify kernel-doc for struct rcu_tasks, courtesy of
Lukas Bulwahn.
2. rcu-tasks: Add block comment laying out RCU Tasks Trace design.
Hello!
These commits are related to RCU's realtime support, including better
testing preemption, improving testing of RCU priority boosting, and
ensuring that at least one rcutorture scenario tests use_softirq=0.
1. Expedite deboost in case of deferred quiescent state.
2. Make TREE03
Hello!
This series provides additional polling interfaces for RCU, so that
an updater may initiate and poll for completion of an RCU grace period
despite never being invoked from a sleepable region of code. These are
similar to the corresponding SRCU interfaces, give or take additional
Hello!
This series contains updates for no-callbacks (NOCBs) CPUs:
1. Detect unsafe checks for offloaded rdp, courtesy of Frederic
Weisbecker.
2. Report ignored local enqueue in nohz mode, courtesy of Frederic
Weisbecker.
3. Comment the reason behind BH
Hello!
This series contains kvfree_rcu() updates, most notably surrounding GPF
flags for memory allocation.
1. kvfree_rcu: Directly allocate page for single-argument case,
courtesy of "Uladzislau Rezki (Sony)".
2. kvfree_rcu: Use __GFP_NOMEMALLOC for single-argument
Hello!
This series adds ranges to bitmaps, and thus to CPU numbers, so that a
kernel boot parameter such as "rcu_nocbs=2-N" is now permitted.
1. test_bitmap: clearly separate ERANGE from EINVAL tests, courtesy
of Paul Gortmaker.
2. test_bitmap: add tests to trigger ERANGE
Hello!
This series contains miscellaneous fixes:
1. Remove superfluous rdp fetch, courtesy of Frederic Weisbecker.
2. Fix CPU-offline trace in rcutree_dying_cpu, courtesy of Neeraj
Upadhyay.
3. Remove spurious instrumentation_end() in rcu_nmi_enter(),
courtesy of
On Wed, Mar 03, 2021 at 03:22:46PM -0500, Alan Stern wrote:
> On Wed, Mar 03, 2021 at 09:40:22AM -0800, Paul E. McKenney wrote:
> > On Wed, Mar 03, 2021 at 12:12:21PM -0500, Alan Stern wrote:
>
> > > Local variables absolutely should be treated just like CPU register
On Wed, Mar 03, 2021 at 06:39:14PM +0100, maranget wrote:
>
>
> > On 3 Mar 2021, at 18:37, maranget wrote:
> >
> > I have made a PR to herd7 that performs the change. The commit message
> > states the new definition.
>
> For those who are interested
>
Signed-off-by: Frederic Weisbecker
Signed-off-by: Paul E. McKenney
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index ca2bb62..4822371 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -674,6 +674,26 @@ int get_nohz_timer_target(void)
return cpu;
}
+static void
On Wed, Mar 03, 2021 at 06:04:22PM +, Russell King - ARM Linux admin wrote:
> On Wed, Mar 03, 2021 at 09:53:38AM -0800, Paul E. McKenney wrote:
> > drivers/net: #ifdef mdio_bus_phy_suspend() and mdio_bus_phy_suspend()
> >
> > The following build error is emitted by rcuto
On Wed, Mar 03, 2021 at 12:12:21PM -0500, Alan Stern wrote:
> On Tue, Mar 02, 2021 at 03:50:19PM -0800, Paul E. McKenney wrote:
> > On Tue, Mar 02, 2021 at 04:14:46PM -0500, Alan Stern wrote:
>
> > > This result is wrong, apparently because of a bug in herd7. There
&g
will be used only in CONFIG_PM_SLEEP=y kernels. This commit therefore
wraps them in #ifdef CONFIG_PM_SLEEP.
Cc: Andrew Lunn
Cc: Heiner Kallweit
Cc: Russell King
Cc: "David S. Miller"
Cc: Jakub Kicinski
Cc:
Signed-off-by: Paul E. McKenney
diff --git a/drivers/net/phy/phy_device.c b/drive
On Wed, Mar 03, 2021 at 09:03:27AM +0100, Michal Hocko wrote:
> [Add Paul]
>
> On Tue 02-03-21 13:19:34, Mike Kravetz wrote:
> > On 3/2/21 6:29 AM, Michal Hocko wrote:
> > > On Tue 02-03-21 06:11:51, Shakeel Butt wrote:
> > >> On Tue, Mar 2, 2021 at 1:44 AM Michal Hocko wrote:
> > >>>
> > >>> On
is
confined to its "if" statement.
Stores to and reloads from shared variables would be handled as they
are now, correct?
My guess is that this turns out to be equivalent to your intuition,
but this stuff can be tricky.
Thanx, Paul
> —Luc
On Wed, Mar 03, 2021 at 02:35:33AM +0100, Frederic Weisbecker wrote:
> On Tue, Mar 02, 2021 at 10:17:29AM -0800, Paul E. McKenney wrote:
> > On Tue, Mar 02, 2021 at 01:34:44PM +0100, Frederic Weisbecker wrote:
> >
> > OK, how about if I queue a temporary commit (shown below
On Tue, Feb 23, 2021 at 01:10:08AM +0100, Frederic Weisbecker wrote:
> A NOCB-gp wake up can safely delete the nocb_bypass_timer. nocb_gp_wait()
> is going to check again the bypass state and rearm the bypass timer if
> necessary.
>
> Signed-off-by: Frederic Weisbecker
> Cc: Josh Triplett
> Cc:
On Tue, Feb 23, 2021 at 01:10:09AM +0100, Frederic Weisbecker wrote:
> No need to disarm the nocb_timer if rcu_nocb is polling because it
> shouldn't be armed either.
>
> Signed-off-by: Frederic Weisbecker
> Cc: Josh Triplett
> Cc: Lai Jiangshan
> Cc: Joel Fernandes
> Cc: Neeraj Upadhyay
>
On Tue, Feb 23, 2021 at 01:10:03AM +0100, Frederic Weisbecker wrote:
> Currently each offline rdp has its own nocb_timer armed when the
> nocb_gp wakeup must be deferred. This layout has many drawbacks,
> compared to a solution based on a single timer per rdp group:
>
> * There are a lot of
On Tue, Mar 02, 2021 at 04:14:46PM -0500, Alan Stern wrote:
> On Tue, Mar 02, 2021 at 07:46:27PM +0100, Björn Töpel wrote:
> > Hi!
> >
> > Firstly; The long Cc-list is to reach the LKMM-folks.
> >
> > Some background; the XDP sockets use a ring-buffer to communicate
> > between the kernel and
On Tue, Mar 02, 2021 at 09:24:04PM +0100, Björn Töpel wrote:
> On Tue, 2 Mar 2021 at 20:57, Paul E. McKenney wrote:
> >
> > On Tue, Mar 02, 2021 at 07:46:27PM +0100, Björn Töpel wrote:
>
> [...]
>
> >
> > Before digging in too deeply, does the following s
On Tue, Mar 02, 2021 at 11:57:58AM -0800, Paul E. McKenney wrote:
> On Tue, Mar 02, 2021 at 07:46:27PM +0100, Björn Töpel wrote:
> > Hi!
> >
> > Firstly; The long Cc-list is to reach the LKMM-folks.
> >
> > Some background; the XDP sockets use a ring-buffer to c
On Tue, Mar 02, 2021 at 07:46:27PM +0100, Björn Töpel wrote:
> Hi!
>
> Firstly; The long Cc-list is to reach the LKMM-folks.
>
> Some background; the XDP sockets use a ring-buffer to communicate
> between the kernel and userland. It's a
> single-consumer/single-producer ring, and described in
>
On Tue, Mar 02, 2021 at 01:34:44PM +0100, Frederic Weisbecker wrote:
> On Mon, Mar 01, 2021 at 05:48:29PM -0800, Paul E. McKenney wrote:
> > On Wed, Feb 24, 2021 at 11:06:06PM +0100, Frederic Weisbecker wrote:
> > > On Wed, Feb 24, 2021 at 10:37:09AM -0800, Paul E. McKenney wro
On Wed, Feb 24, 2021 at 11:06:06PM +0100, Frederic Weisbecker wrote:
> On Wed, Feb 24, 2021 at 10:37:09AM -0800, Paul E. McKenney wrote:
> > On Tue, Feb 23, 2021 at 01:09:59AM +0100, Frederic Weisbecker wrote:
> > > Two situations can cause a missed nocb timer rearm:
>
On Mon, Mar 01, 2021 at 04:53:27PM +0100, Jürgen Groß wrote:
> On 01.03.21 16:45, Peter Zijlstra wrote:
> > On Sun, Feb 28, 2021 at 04:07:04PM -0800, Paul E. McKenney wrote:
> > > On Fri, Feb 26, 2021 at 10:05:51PM +0100, Peter Zijlstra wrote:
> > > > On Fri, Feb 26,
On Fri, Feb 26, 2021 at 10:05:51PM +0100, Peter Zijlstra wrote:
> On Fri, Feb 26, 2021 at 10:12:05AM -0800, Paul E. McKenney wrote:
> > On Fri, Feb 26, 2021 at 05:38:44PM +0100, Peter Zijlstra wrote:
> > >
> > > I hate all of this, but if this will finally catch the a
On Sun, Feb 28, 2021 at 09:51:35PM +0100, Helge Deller wrote:
> Adding parisc-parisc mailing list...
>
> On 2/28/21 6:05 AM, Paul E. McKenney wrote:
> > On Sun, Feb 28, 2021 at 12:08:08PM +0800, kernel test robot wrote:
> > > Hi Paul,
> > >
> >
On Sun, Feb 28, 2021 at 12:08:08PM +0800, kernel test robot wrote:
> Hi Paul,
>
> First bad commit (maybe != root cause):
>
> tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
> master
> head: 5695e51619745d4fe3ec2506a2f0cd982c5e27a4
> commit:
On Sat, Feb 27, 2021 at 06:01:18PM +0100, Javier Contreras wrote:
> Fixed two spaces coding style issue.
>
> Signed-off-by: Javier Contreras
I am not maintainer for this code, and also wangjingyu beat you to this
one. But one question: Given that this patch would cause "git blame"
to list you
On Fri, Feb 26, 2021 at 05:38:44PM +0100, Peter Zijlstra wrote:
>
> I hate all of this, but if this will finally catch the actual problem,
> we can then revert all this, so sure.
OK, I will bite... What exactly do you hate about it?
On Thu, Feb 25, 2021 at 11:23:18PM +0100, Peter Zijlstra wrote:
> On Thu, Feb 25, 2021 at 10:33:21AM -0800, Paul E. McKenney wrote:
> > One question for Peter... Does each and every context switch imply a
> > full barrier?
>
> Yes, also see the smp_mb__after_spinlock() in _
On Thu, Feb 25, 2021 at 03:20:34PM -0500, Mathieu Desnoyers wrote:
> - On Feb 25, 2021, at 1:33 PM, paulmck paul...@kernel.org wrote:
> [...]
> > commit 581f79546b6be406a9c7280b2d3511b60821efe0
> > Author: Paul E. McKenney
> > Date: Thu Feb 25 10:26:00 2021 -0800
&g
) reports
> > failure, which is another path to the following paragraph.
> >
> > If the task could not be locked down due its currently running,
> > then trc_wait_for_one_reader() attempts to send an IPI, which results in
> > trc_read_check_handler() rechecking for a read-side cri
On Thu, Feb 25, 2021 at 09:22:48AM -0500, Mathieu Desnoyers wrote:
> Hi Paul,
>
> Answering a question from Peter on IRC got me to look at
> rcu_read_lock_trace(), and I see this:
>
> static inline void rcu_read_lock_trace(void)
> {
> struct task_struct *t = current;
>
>
On Thu, Feb 25, 2021 at 01:48:13AM +0100, Frederic Weisbecker wrote:
> On Wed, Feb 24, 2021 at 04:14:25PM -0800, Paul E. McKenney wrote:
> > On Wed, Feb 24, 2021 at 11:06:06PM +0100, Frederic Weisbecker wrote:
> > > I managed to recollect some pieces of my brain. So keep the abo
On Wed, Feb 24, 2021 at 04:30:29PM +0800, Jiapeng Chong wrote:
> Fix the following sparse warning:
>
> kernel/rcu/tree_plugin.h:1497:5: warning: symbol
> 'nocb_nobypass_lim_per_jiffy' was not declared. Should it be static?
>
> Reported-by: Abaci Robot
> Signed-off-by: Jiapeng Chong
Queued
On Wed, Feb 24, 2021 at 11:06:06PM +0100, Frederic Weisbecker wrote:
> On Wed, Feb 24, 2021 at 10:37:09AM -0800, Paul E. McKenney wrote:
> > On Tue, Feb 23, 2021 at 01:09:59AM +0100, Frederic Weisbecker wrote:
> > > Two situations can cause a missed nocb timer rearm:
>
On Tue, Feb 23, 2021 at 01:09:59AM +0100, Frederic Weisbecker wrote:
> Two situations can cause a missed nocb timer rearm:
>
> 1) rdp(CPU A) queues its nocb timer. The grace period elapses before
>the timer get a chance to fire. The nocb_gp kthread is awaken by
>rdp(CPU B). The nocb_cb
quot;N" to be used anywhere in the region spec, i.e. "N-N:N/N" vs.
> > just being allowed at end of range like "0-N". Add new self-tests. Drop
> > "all" and "none" aliases as redundant and not worth the extra
> > complication. ]
> &
uot;none" aliases as redundant and not worth the extra complication. ]
>
> https://lore.kernel.org/lkml/20210126171141.122639-1-paul.gortma...@windriver.com/
>
> [v2: push code down from cpu subsys to core bitmap code as per
> Yury's comments. Change "last" to simply be
On Mon, Feb 22, 2021 at 08:07:03PM +0100, Uladzislau Rezki wrote:
> On Mon, Feb 22, 2021 at 10:16:08AM -0800, Paul E. McKenney wrote:
> > On Mon, Feb 22, 2021 at 06:16:05PM +0100, Uladzislau Rezki wrote:
> > > On Mon, Feb 22, 2021 at 07:09:03AM -0800, Paul E. McKenney wrote:
>
On Mon, Feb 22, 2021 at 06:16:05PM +0100, Uladzislau Rezki wrote:
> On Mon, Feb 22, 2021 at 07:09:03AM -0800, Paul E. McKenney wrote:
> > On Mon, Feb 22, 2021 at 01:54:31PM +0100, Uladzislau Rezki wrote:
> > > On Mon, Feb 22, 2021 at 11:21:04AM +0100, Sebastian And
On Mon, Feb 22, 2021 at 01:54:31PM +0100, Uladzislau Rezki wrote:
> On Mon, Feb 22, 2021 at 11:21:04AM +0100, Sebastian Andrzej Siewior wrote:
> > On 2021-02-19 10:33:36 [-0800], Paul E. McKenney wrote:
> > > For definiteness, here is the first part of the change, posted earlier
r feedback. ]
Reviewed-by: Marco Elver
Signed-off-by: Paul E. McKenney
diff --git a/tools/memory-model/Documentation/access-marking.txt
b/tools/memory-model/Documentation/access-marking.txt
new file mode 100644
index 000..accb79f
--- /dev/null
+++ b/tools/memory-model/Documentation/access-m
On Fri, Feb 19, 2021 at 10:14:27PM +0100, Pavel Machek wrote:
> Hi!
>
> > [ Upstream commit 06862d789ddde8a99c1e579e934ca17c15a84755 ]
> >
> > We get suspcious RCU usage splats with cpuidle in several places in
> > omap_enter_idle_coupled() with the kernel debug options enabled:
> >
> > RCU
On Fri, Feb 19, 2021 at 03:02:31PM -0500, Steven Rostedt wrote:
> On Fri, 19 Feb 2021 10:33:36 -0800
> "Paul E. McKenney" wrote:
>
> > commit 4f659bf04fc4610523544493d6db92fc8670b086
> > Author: Paul E. McKenney
> > Date: Fri Feb 12 16:20:40 2021 -0800
&
On Fri, Feb 19, 2021 at 11:45:39AM -0800, Paul E. McKenney wrote:
> On Fri, Feb 19, 2021 at 02:14:29PM -0500, Steven Rostedt wrote:
> > On Fri, 19 Feb 2021 10:18:11 -0800
> > "Paul E. McKenney" wrote:
> >
> > > We can further prevent entry into dynt
On Fri, Feb 19, 2021 at 02:58:30PM -0500, Steven Rostedt wrote:
> On Fri, 19 Feb 2021 11:47:44 -0800
> "Paul E. McKenney" wrote:
>
> > Could you please add the following Reported-by tags?
> >
> > Reported-by: Sebastian Andrzej Siewior
> > Reported-by:
).
> >
> > To avoid this issue, make the kprobe optimization disabled in the
> > early_initcall() and enables it in subsys_initcall().
> >
> > Note that non-optimized kprobes is still available after
> > early_initcall(). Only jump optimization is delayed.
> >
On Fri, Feb 19, 2021 at 02:14:29PM -0500, Steven Rostedt wrote:
> On Fri, 19 Feb 2021 10:18:11 -0800
> "Paul E. McKenney" wrote:
>
> > We can further prevent entry into dyntick-idle state until
> > the ksoftirqd kthreads have been spawned, which means th
On Fri, Feb 19, 2021 at 10:33:36AM -0800, Paul E. McKenney wrote:
> On Fri, Feb 19, 2021 at 10:18:11AM -0800, Paul E. McKenney wrote:
> > On Fri, Feb 19, 2021 at 12:27:51PM +0100, Uladzislau Rezki wrote:
> > > On Fri, Feb 19, 2021 at 12:23:57PM +0100, Uladzislau Rezki wrote:
>
On Fri, Feb 19, 2021 at 10:18:11AM -0800, Paul E. McKenney wrote:
> On Fri, Feb 19, 2021 at 12:27:51PM +0100, Uladzislau Rezki wrote:
> > On Fri, Feb 19, 2021 at 12:23:57PM +0100, Uladzislau Rezki wrote:
> > > On Fri, Feb 19, 2021 at 12:17:38PM +0100, Sebastian And
On Fri, Feb 19, 2021 at 12:27:51PM +0100, Uladzislau Rezki wrote:
> On Fri, Feb 19, 2021 at 12:23:57PM +0100, Uladzislau Rezki wrote:
> > On Fri, Feb 19, 2021 at 12:17:38PM +0100, Sebastian Andrzej Siewior wrote:
> > > On 2021-02-19 12:13:01 [+0100], Uladzislau Rezki wrote:
> > > > I or Paul will
On Thu, Feb 18, 2021 at 11:04:00AM +0800, Lai Jiangshan wrote:
> +CC Paul
>
>
> On Wed, Feb 17, 2021 at 7:58 PM wrote:
> >
> > From: Zqiang
> >
> > The RCU read critical area already by preempt_disable/enable()
> > (equivalent to rcu_read_lock_sched/unlock_sched()) mark, so remove
> >
ables it in subsys_initcall().
>
> Note that non-optimized kprobes is still available after
> early_initcall(). Only jump optimization is delayed.
>
> Fixes: 36dadef23fcc ("kprobes: Init kprobes in early_initcall")
> Reported-by: Paul E. McKenney
Thank you, but th
Hello!
If there is a sufficient delay between reading the watchdog clock and the
clock under test, the clock under test will be marked unstable through no
fault of its own. This series checks for this, doing limited retries
to get a good set of clock reads. If the clock is marked unstable
and
f both have the same value (false or true)
> both are randomly tested, otherwise only the one with value true
> is tested. The value of this is that it allows testing of both
> options with one test.
>
> Suggested-by: Paul E. McKenney
> Signed-off-by: Uladzislau Rezki (So
On Wed, Feb 17, 2021 at 07:01:59PM +0100, Sebastian Andrzej Siewior wrote:
> On 2021-02-17 07:54:47 [-0800], Paul E. McKenney wrote:
> > > I though boosting is accomplished by acquiring a rt_mutex in a
> > > rcu_read() section. Do you have some code to point me to, to
On Wed, Feb 17, 2021 at 11:47:59PM +0900, Masami Hiramatsu wrote:
> On Tue, 16 Feb 2021 09:30:03 -0800
> "Paul E. McKenney" wrote:
>
> > On Mon, Feb 15, 2021 at 12:28:26PM +0100, Sebastian Andrzej Siewior wrote:
> > > On 2021-02-13 08:45:54 [-0800], Paul E. McK
On Wed, Feb 17, 2021 at 07:54:47AM -0800, Paul E. McKenney wrote:
> On Wed, Feb 17, 2021 at 04:32:53PM +0100, Sebastian Andrzej Siewior wrote:
> > On 2021-02-16 10:36:09 [-0800], Paul E. McKenney wrote:
> > > Hello, Sebastian,
> >
> > Hi Paul,
> >
> > &
On Wed, Feb 17, 2021 at 04:32:53PM +0100, Sebastian Andrzej Siewior wrote:
> On 2021-02-16 10:36:09 [-0800], Paul E. McKenney wrote:
> > Hello, Sebastian,
>
> Hi Paul,
>
> > I punted on this for the moment by making RCU priority boosting testing
> > depend on CONFIG
Hello, Sebastian,
I punted on this for the moment by making RCU priority boosting testing
depend on CONFIG_PREEMPT_RT, but longer term I am wondering if RCU's
various timed delays and timeouts should use hrtimers rather than normal
timers in kernels built with CONFIG_RCU_BOOST. As it is, RCU
On Mon, Feb 15, 2021 at 05:27:05PM +0100, Uladzislau Rezki wrote:
> On Tue, Feb 09, 2021 at 05:00:52PM -0800, Paul E. McKenney wrote:
> > On Tue, Feb 09, 2021 at 09:13:43PM +0100, Uladzislau Rezki wrote:
> > > On Thu, Feb 04, 2021 at 01:46:48PM -0800, Paul E. McKenney wrote:
>
On Mon, Feb 15, 2021 at 12:28:26PM +0100, Sebastian Andrzej Siewior wrote:
> On 2021-02-13 08:45:54 [-0800], Paul E. McKenney wrote:
> > Glad you like it! But let's see which (if any) of these patches solves
> > the problem for Sebastian.
>
> Looking at that, is there
The following commit has been merged into the core/rcu branch of tip:
Commit-ID: be06c2577eca6d9dbf61985d4078eb904024380f
Gitweb:
https://git.kernel.org/tip/be06c2577eca6d9dbf61985d4078eb904024380f
Author:Paul E. McKenney
AuthorDate:Mon, 09 Nov 2020 08:22:16 -08:00
The following commit has been merged into the core/rcu branch of tip:
Commit-ID: 2c8bce609f095a8879d3948e0c18d629881518dd
Gitweb:
https://git.kernel.org/tip/2c8bce609f095a8879d3948e0c18d629881518dd
Author:Paul E. McKenney
AuthorDate:Tue, 10 Nov 2020 16:17:42 -08:00
The following commit has been merged into the core/rcu branch of tip:
Commit-ID: 2252ec1464730ce718dc8087c13a419b9aa58758
Gitweb:
https://git.kernel.org/tip/2252ec1464730ce718dc8087c13a419b9aa58758
Author:Paul E. McKenney
AuthorDate:Thu, 10 Dec 2020 09:53:50 -08:00
The following commit has been merged into the core/rcu branch of tip:
Commit-ID: 8b5bd67cf6422b63ee100d76d8de8960ca2df7f0
Gitweb:
https://git.kernel.org/tip/8b5bd67cf6422b63ee100d76d8de8960ca2df7f0
Author:Paul E. McKenney
AuthorDate:Fri, 13 Nov 2020 12:54:48 -08:00
The following commit has been merged into the core/rcu branch of tip:
Commit-ID: 5358c9fa54b09b5d3d7811b033aa0838c1bbaaf2
Gitweb:
https://git.kernel.org/tip/5358c9fa54b09b5d3d7811b033aa0838c1bbaaf2
Author:Paul E. McKenney
AuthorDate:Fri, 13 Nov 2020 17:31:55 -08:00
The following commit has been merged into the core/rcu branch of tip:
Commit-ID: fd56f64b4e3b9c53fbb12ef74c6f1f5fde4cc1c8
Gitweb:
https://git.kernel.org/tip/fd56f64b4e3b9c53fbb12ef74c6f1f5fde4cc1c8
Author:Paul E. McKenney
AuthorDate:Fri, 13 Nov 2020 20:14:27 -08:00
The following commit has been merged into the core/rcu branch of tip:
Commit-ID: 4e7ccfae52b39aeee93ed39d4184d50ea201fbef
Gitweb:
https://git.kernel.org/tip/4e7ccfae52b39aeee93ed39d4184d50ea201fbef
Author:Paul E. McKenney
AuthorDate:Sun, 15 Nov 2020 20:33:38 -08:00
The following commit has been merged into the core/rcu branch of tip:
Commit-ID: 0fd0548db13346bfb3bb23860ab270a32d6e385a
Gitweb:
https://git.kernel.org/tip/0fd0548db13346bfb3bb23860ab270a32d6e385a
Author:Paul E. McKenney
AuthorDate:Fri, 13 Nov 2020 20:43:59 -08:00
The following commit has been merged into the locking/core branch of tip:
Commit-ID: 8881e7a774a8d14088d6c6fde8730660f74a3642
Gitweb:
https://git.kernel.org/tip/8881e7a774a8d14088d6c6fde8730660f74a3642
Author:Paul E. McKenney
AuthorDate:Fri, 06 Nov 2020 09:58:01 -08:00
The following commit has been merged into the core/rcu branch of tip:
Commit-ID: d756c74e6f6e76e99f8bffcea57833816dd335b6
Gitweb:
https://git.kernel.org/tip/d756c74e6f6e76e99f8bffcea57833816dd335b6
Author:Paul E. McKenney
AuthorDate:Wed, 09 Dec 2020 16:54:41 -08:00
The following commit has been merged into the core/rcu branch of tip:
Commit-ID: 74612a07b83fc46c2b2e6f71a541d55b024ebefc
Gitweb:
https://git.kernel.org/tip/74612a07b83fc46c2b2e6f71a541d55b024ebefc
Author:Paul E. McKenney
AuthorDate:Thu, 12 Nov 2020 16:34:09 -08:00
The following commit has been merged into the core/rcu branch of tip:
Commit-ID: 1a893c711a600ab57526619b56e6f6b7be00956e
Gitweb:
https://git.kernel.org/tip/1a893c711a600ab57526619b56e6f6b7be00956e
Author:Paul E. McKenney
AuthorDate:Fri, 13 Nov 2020 09:37:39 -08:00
The following commit has been merged into the core/rcu branch of tip:
Commit-ID: ee7f4a87a18cd3bb141b38e2ef0c3e53253cdf63
Gitweb:
https://git.kernel.org/tip/ee7f4a87a18cd3bb141b38e2ef0c3e53253cdf63
Author:Paul E. McKenney
AuthorDate:Wed, 18 Nov 2020 16:01:32 -08:00
The following commit has been merged into the core/rcu branch of tip:
Commit-ID: 29d2bb94a8a126ce80ffbb433b648b32fdea524e
Gitweb:
https://git.kernel.org/tip/29d2bb94a8a126ce80ffbb433b648b32fdea524e
Author:Paul E. McKenney
AuthorDate:Fri, 13 Nov 2020 10:08:09 -08:00
The following commit has been merged into the core/rcu branch of tip:
Commit-ID: bc480a6354ef2e15c26c3bdbd0db647026e788a7
Gitweb:
https://git.kernel.org/tip/bc480a6354ef2e15c26c3bdbd0db647026e788a7
Author:Paul E. McKenney
AuthorDate:Sun, 15 Nov 2020 12:45:57 -08:00
The following commit has been merged into the core/rcu branch of tip:
Commit-ID: 00504537f44422a99d97f615f2b3ee17cfba194d
Gitweb:
https://git.kernel.org/tip/00504537f44422a99d97f615f2b3ee17cfba194d
Author:Paul E. McKenney
AuthorDate:Thu, 29 Oct 2020 15:08:57 -07:00
The following commit has been merged into the core/rcu branch of tip:
Commit-ID: f3ea978b712f768a02137e867aced5bfdcea670e
Gitweb:
https://git.kernel.org/tip/f3ea978b712f768a02137e867aced5bfdcea670e
Author:Paul E. McKenney
AuthorDate:Wed, 11 Nov 2020 10:12:05 -08:00
The following commit has been merged into the core/rcu branch of tip:
Commit-ID: b08ea1de6a8f8929c7dafd6f708799365fa90c11
Gitweb:
https://git.kernel.org/tip/b08ea1de6a8f8929c7dafd6f708799365fa90c11
Author:Paul E. McKenney
AuthorDate:Fri, 06 Nov 2020 13:52:31 -08:00
The following commit has been merged into the core/rcu branch of tip:
Commit-ID: 243027a3c80564bf96e40437ffac46efb9f5f2b5
Gitweb:
https://git.kernel.org/tip/243027a3c80564bf96e40437ffac46efb9f5f2b5
Author:Paul E. McKenney
AuthorDate:Wed, 11 Nov 2020 16:08:01 -08:00
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