35,6 @@ void posix_cpu_timers_exit_group(struct
cleanup_timers(&tsk->signal->posix_cputimers);
}
-static inline int expires_gt(u64 expires, u64 new_exp)
-{
- return expires == 0 || expires > new_exp;
-}
-
/*
* Insert the timer on the appropriate list before any
Moving the posix cpu timers from on list to another and then expiring them
from the second list is avoiding to drop and reacquire sighand lock for
each timer expiry, but on the other hand it's more complicated code and
suboptimal for a small number of timers.
Remove the extra list and expire
Instead of dividing A to match the units of B it's more efficient to
multiply B to match the units of A.
Signed-off-by: Thomas Gleixner
---
kernel/time/posix-cpu-timers.c | 20
1 file changed, 12 insertions(+), 8 deletions(-)
--- a/kernel/time/posix-cpu-timers.c
+++ b/ker
With the array based samples and expiry cache, the expiry function can use
a loop to collect timers from the clock specific lists.
Signed-off-by: Thomas Gleixner
---
kernel/time/posix-cpu-timers.c | 48 +
1 file changed, 25 insertions(+), 23 deletions
Extract the clock ID (PROF/VIRT/SCHED) from the clock selector and use it
as argument to the sample functions. That allows to simplify them once all
callers are fixed.
Signed-off-by: Thomas Gleixner
---
kernel/time/posix-cpu-timers.c |5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
/**
* posix_cputimers - Container for posix CPU timer related data
* @expiries: Earliest-expiration cache array based
+ * @timers_active: Timers are queued.
+ * @expiry_active: Timer expiry is active. Used for
+ * process wide timers to avoid multiple
The functions have only one caller left. No point in having them.
Move the almost duplicated code into the caller and simplify it.
Signed-off-by: Thomas Gleixner
---
kernel/time/posix-cpu-timers.c | 30 +-
1 file changed, 9 insertions(+), 21 deletions(-)
--- a/ker
- * @cputime_expires: Earliest-expiration cache
+ * @cputime_expires: Earliest-expiration cache task_cputime based
+ * @expiries: Earliest-expiration cache array based
* @cpu_timers:List heads to queue posix CPU timers
*
* Used in task_struct and signal_struct
*/
struct
Using a linear O(N) search for timer insertion affects execution time and
Dcache footprint badly with a larger number of timers.
Switch the storage to a timerqueue which is already used for hrtimers and
alarmtimers. It does not affect the size of struct k_itimer as it.alarm is
still larger.
The
All callers hand in a valdiated clock id. Remove the return value which was
unchecked in most places anyway.
Signed-off-by: Thomas Gleixner
---
kernel/time/posix-cpu-timers.c | 28 +---
1 file changed, 13 insertions(+), 15 deletions(-)
--- a/kernel/time/posix-cpu-timer
/kernel/time/posix-cpu-timers.c
+++ b/kernel/time/posix-cpu-timers.c
@@ -1181,15 +1181,15 @@ void run_posix_cpu_timers(void)
* Set one of the process-wide special case CPU timers or RLIMIT_CPU.
* The tsk->sighand->siglock must be held by the caller.
*/
-void set_process_cpu_timer(
The RTIME limit expiry code does not check the hard RTTIME limit for
INFINITY, i.e. being disabled. Add it.
Signed-off-by: Thomas Gleixner
---
kernel/time/posix-cpu-timers.c |2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/kernel/time/posix-cpu-timers.c
+++ b/kernel/time/posix-cp
Extract the clock ID (PROF/VIRT/SCHED) from the clock selector and use it
as argument to the sample functions. That allows to simplify them once all
callers are fixed.
Signed-off-by: Thomas Gleixner
---
kernel/time/posix-cpu-timers.c |5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
current->comm, task_pid_nr(current));
+ }
+ __group_send_sig_info(signo, SEND_SIG_PRIV, current);
+ return true;
+}
+
/*
* Check for any per-thread CPU timers that have fired and move them off
* the tsk->cpu_timers[N] list onto the firing
Instead of using task_cputime and doing the addition of utime and stime at
all call sites, it's way simpler to have a sample array which allows
indexed based checks against the expiry cache array.
Signed-off-by: Thomas Gleixner
---
kernel/time/posix-cpu-timers.c | 26 ++
to be started
- * @iimes: Storage for time samples
+ * @samples: Storage for time samples
*
* The thread group cputime accouting is avoided when there are no posix
* CPU timers armed. Before starting a timer it's required to check whether
@@ -266,13 +257,14 @@ void
The last users of the odd define based renaming of struct task_cputime
members are gone. Good riddance.
Signed-off-by: Thomas Gleixner
---
include/linux/posix-timers.h | 15 ---
1 file changed, 15 deletions(-)
--- a/include/linux/posix-timers.h
+++ b/include/linux/posix-timers.h
@
}
list_add(&nt->entry, listpos);
- if (listpos == head) {
- u64 exp = nt->expires;
+ if (listpos != head)
+ return;
- /*
-* We are the new earliest-expiring POSIX 1.b timer, hence
-* need to updat
t k_itimer *timer, *next;
- unsigned long flags;
LIST_HEAD(firing);
lockdep_assert_irqs_disabled();
/*
-* The fast path checks that there are no expired thread or thread
-* group timers. If that's so, just return.
+* Verify that sighand exits. If
Extract the clock ID (PROF/VIRT/SCHED) from the clock selector and use it
as argument to the sample functions. That allows to simplify them once all
callers are fixed.
Signed-off-by: Thomas Gleixner
---
kernel/time/posix-cpu-timers.c | 11 ++-
1 file changed, 6 insertions(+), 5 deletio
From: Andrei Vagin
Now, when the clock_get_ktime() callback exists, the suboptimal
timespec64-based conversion can be removed from common_timer_get().
Suggested-by: Thomas Gleixner
Signed-off-by: Andrei Vagin
Co-developed-by: Dmitry Safonov
Signed-off-by: Dmitry Safonov
---
kernel/time/posi
From: Andrei Vagin
clock_nanosleep() accepts absolute values of expiration time, if the
TIMER_ABSTIME flag is set. This value is in the task time namespace,
which has to be converted to the host time namespace.
Signed-off-by: Andrei Vagin
Co-developed-by: Dmitry Safonov
Signed-off-by: Dmitry S
From: Andrei Vagin
Wire timer_settime() syscall into time namespace virtualization.
sys_timer_settime() calls the ktime->timer_set() callback. Right now,
common_timer_set() is the only implementation for the callback.
There user-supplied timer's value is converted from timespec64 to ktime
and t
The pull request you sent on Sat, 03 Aug 2019 16:36:53 -:
> git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git
> timers-urgent-for-linus
has been merged into torvalds/linux.git:
https://git.kernel.org/torvalds/c/0432a0a066b05361b6d4d26522233c3c76c9e5da
Thank you!
--
Deet-do
Linus,
please pull the latest timers-urgent-for-linus git tree from:
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git
timers-urgent-for-linus
up to: 33a58980ff3c: arm64: compat: vdso: Use legacy syscalls as fallback
A series of commits to deal with the regression caused by the
Commit-ID: 08a3c192c93f4359a94bf47971e55b0324b72b8b
Gitweb: https://git.kernel.org/tip/08a3c192c93f4359a94bf47971e55b0324b72b8b
Author: Thomas Gleixner
AuthorDate: Wed, 31 Jul 2019 00:33:55 +0200
Committer: Thomas Gleixner
CommitDate: Thu, 1 Aug 2019 20:51:25 +0200
posix-timers
-timers: Move rcu_head out of it union
Timer deletion on PREEMPT_RT is prone to priority inversion and live
locks. The hrtimer code has a synchronization mechanism for this. Posix CPU
timers will grow one.
But that mechanism cannot be invoked while holding the k_itimer lock
because that can deadlock
Commit-ID: 6945e5c2abe008302b20266248d6de95575311a8
Gitweb: https://git.kernel.org/tip/6945e5c2abe008302b20266248d6de95575311a8
Author: Thomas Gleixner
AuthorDate: Wed, 31 Jul 2019 00:33:53 +0200
Committer: Thomas Gleixner
CommitDate: Thu, 1 Aug 2019 20:51:24 +0200
posix-timers
Commit-ID: 21670ee44f1e3565030bcabc62178b8e5eb2fce7
Gitweb: https://git.kernel.org/tip/21670ee44f1e3565030bcabc62178b8e5eb2fce7
Author: Thomas Gleixner
AuthorDate: Wed, 31 Jul 2019 00:33:52 +0200
Committer: Thomas Gleixner
CommitDate: Thu, 1 Aug 2019 20:51:24 +0200
posix-timers
Commit-ID: 030dcdd197d77374879bb5603d091eee7d8aba80
Gitweb: https://git.kernel.org/tip/030dcdd197d77374879bb5603d091eee7d8aba80
Author: Anna-Maria Gleixner
AuthorDate: Fri, 26 Jul 2019 20:31:00 +0200
Committer: Thomas Gleixner
CommitDate: Thu, 1 Aug 2019 20:51:22 +0200
timers: Prepare
On Thu, 1 Aug 2019, Oleg Nesterov wrote:
> On 08/01, Thomas Gleixner wrote:
> >
> > +static void __run_posix_cpu_timers(struct task_struct *tsk)
> > +{
> > + /* FIXME: Init it proper in fork or such */
> > + init_task_work(&tsk->cpu_timer_work, posix_cpu_timers_work);
> > + task_work_add(tsk,
Commit-ID: 3a839db3eaeeef31520de45f3b078204d068e3d0
Gitweb: https://git.kernel.org/tip/3a839db3eaeeef31520de45f3b078204d068e3d0
Author: Thomas Gleixner
AuthorDate: Wed, 31 Jul 2019 00:33:55 +0200
Committer: Thomas Gleixner
CommitDate: Thu, 1 Aug 2019 17:46:43 +0200
posix-timers
-timers: Move rcu_head out of it union
Timer deletion on PREEMPT_RT is prone to priority inversion and live
locks. The hrtimer code has a synchronization mechanism for this. Posix CPU
timers will grow one.
But that mechanism cannot be invoked while holding the k_itimer lock
because that can deadlock
Commit-ID: f8d1b0549263354b8d8854fefc521ac536be70ff
Gitweb: https://git.kernel.org/tip/f8d1b0549263354b8d8854fefc521ac536be70ff
Author: Thomas Gleixner
AuthorDate: Wed, 31 Jul 2019 00:33:53 +0200
Committer: Thomas Gleixner
CommitDate: Thu, 1 Aug 2019 17:46:42 +0200
posix-timers
Commit-ID: b0ccc6eb0d7e0b7d346b118ccc8b38bf18e39b7f
Gitweb: https://git.kernel.org/tip/b0ccc6eb0d7e0b7d346b118ccc8b38bf18e39b7f
Author: Anna-Maria Gleixner
AuthorDate: Wed, 31 Jul 2019 00:33:52 +0200
Committer: Thomas Gleixner
CommitDate: Thu, 1 Aug 2019 17:46:42 +0200
posix-timers
Commit-ID: 1c2df8ac9292ea1fe6c958c198bf6bc5c768acf5
Gitweb: https://git.kernel.org/tip/1c2df8ac9292ea1fe6c958c198bf6bc5c768acf5
Author: Anna-Maria Gleixner
AuthorDate: Fri, 26 Jul 2019 20:31:00 +0200
Committer: Thomas Gleixner
CommitDate: Thu, 1 Aug 2019 17:43:20 +0200
timers: Prepare
On 08/01, Thomas Gleixner wrote:
>
> +static void __run_posix_cpu_timers(struct task_struct *tsk)
> +{
> + /* FIXME: Init it proper in fork or such */
> + init_task_work(&tsk->cpu_timer_work, posix_cpu_timers_work);
> + task_work_add(tsk, &tsk->cpu_timer_work, true);
> +}
What if updat
; bool
> >
> > +# Select to handle posix CPU timers from task_work
> > +# and not from the timer interrupt context
> > +config POSIX_CPU_TIMERS_TASK_WORK
> > + bool
> > +
> > if GENERIC_CLOCKEVENTS
> > menu "Timers subsystem"
>
On Thu, Aug 01, 2019 at 04:32:54PM +0200, Thomas Gleixner wrote:
> --- a/kernel/time/Kconfig
> +++ b/kernel/time/Kconfig
> @@ -52,6 +52,11 @@ config GENERIC_CLOCKEVENTS_MIN_ADJUST
> config GENERIC_CMOS_UPDATE
> bool
>
> +# Select to handle posix CPU timers from task_w
Running posix cpu timers in hard interrupt context has a few downsides:
- For PREEMPT_RT it cannot work as the expiry code needs to take sighand
lock, which is a 'sleeping spinlock' in RT
- For fine grained accounting it's just wrong to run this in context of
the timer in
Running posix cpu timers in hard interrupt context has a few downsides:
- For PREEMPT_RT it cannot work as the expiry code needs to take sighand
lock, which is a 'sleeping spinlock' in RT
- For fine grained accounting it's just wrong to run this in context of
the timer in
@@ -1127,25 +1127,11 @@ static inline int fastpath_timer_check(s
return 0;
}
-/*
- * This is called from the timer interrupt handler. The irq handler has
- * already updated our counts. We need to check if any timers fire now.
- * Interrupts are disabled.
- */
-void run_posix_cpu_timers(struct
On Wed, 31 Jul 2019, Peter Zijlstra wrote:
> On Wed, Jul 31, 2019 at 12:33:55AM +0200, Thomas Gleixner wrote:
> > +static struct k_itimer *timer_wait_running(struct k_itimer *timer,
> > + unsigned long *flags)
> > +{
> > + const struct k_clock *kc = READ_ONCE
On Wed, Jul 31, 2019 at 12:33:48AM +0200, Thomas Gleixner wrote:
> The following series prepares posix-timers for RT. The main change here is
> to utilize the hrtimer synchronization mechanism to prevent priority
> inversion and live locks on timer deletion.
>
> This does not cove
On Wed, Jul 31, 2019 at 12:33:55AM +0200, Thomas Gleixner wrote:
> +static struct k_itimer *timer_wait_running(struct k_itimer *timer,
> +unsigned long *flags)
> +{
> + const struct k_clock *kc = READ_ONCE(timer->kclock);
> + timer_t timer_id = READ_O
As a preparatory step for adding the PREEMPT RT specific synchronization
mechanism to wait for a running timer callback, rework the timer cancel
retry loops so they call a common function. This allows trivial
substitution in one place.
Originally-by: Anna-Maria Gleixner
Signed-off-by: Thomas Glei
Timer deletion on PREEMPT_RT is prone to priority inversion and live
locks. The hrtimer code has a synchronization mechanism for this. Posix CPU
timers will grow one.
But that mechanism cannot be invoked while holding the k_itimer lock
because that can deadlock against the running timer callback
do_timer_settime() has a 'flags' argument and uses 'flag' for the interrupt
flags, which is confusing at best.
Rename the argument so 'flags' can be used for interrupt flags as usual.
Signed-off-by: Thomas Gleixner
---
kernel/time/posix-timers.c | 10 +-
1 file changed, 5 insertions(+
Posix timer delete retry loops are affected by the same priority inversion
and live lock issues as the other timers.
Provide a RT specific synchronization function which keeps a reference to
the timer by holding rcu read lock to prevent the timer from being freed,
dropping the timer lock and
The following series prepares posix-timers for RT. The main change here is
to utilize the hrtimer synchronization mechanism to prevent priority
inversion and live locks on timer deletion.
This does not cover the posix CPU timers as they need more special
treatment for RT which is covered in a
Commit-ID: 51503dcd6118d627a0c1b5829191d4fa6f16
Gitweb: https://git.kernel.org/tip/51503dcd6118d627a0c1b5829191d4fa6f16
Author: Anna-Maria Gleixner
AuthorDate: Fri, 26 Jul 2019 20:31:00 +0200
Committer: Thomas Gleixner
CommitDate: Tue, 30 Jul 2019 23:57:57 +0200
timers
From: Andrei Vagin
Now, when the clock_get_ktime() callback exists, the suboptimal
timespec64-based conversion can be removed from common_timer_get().
Suggested-by: Thomas Gleixner
Signed-off-by: Andrei Vagin
Co-developed-by: Dmitry Safonov
Signed-off-by: Dmitry Safonov
---
kernel/time/posi
From: Andrei Vagin
clock_nanosleep() accepts absolute values of expiration time, if the
TIMER_ABSTIME flag is set. This value is in the task time namespace,
which has to be converted to the host time namespace.
Signed-off-by: Andrei Vagin
Co-developed-by: Dmitry Safonov
Signed-off-by: Dmitry S
From: Andrei Vagin
Wire timer_settime() syscall into time namespace virtualization.
sys_timer_settime() calls the ktime->timer_set() callback. Right now,
common_timer_set() is the only implementation for the callback.
There user-supplied timer's value is converted from timespec64 to ktime
and t
From: Andrei Vagin
Now, when the clock_get_ktime() callback exists, the suboptimal
timespec64-based conversion can be removed from common_timer_get().
Suggested-by: Thomas Gleixner
Signed-off-by: Andrei Vagin
Co-developed-by: Dmitry Safonov
Signed-off-by: Dmitry Safonov
---
kernel/time/posi
From: Andrei Vagin
Wire timer_settime() syscall into time namespace virtualization.
sys_timer_settime() calls the ktime->timer_set() callback. Right now,
common_timer_set() is the only implementation for the callback.
There user-supplied timer's value is converted from timespec64 to ktime
and t
d that, as I don't know whether this is a
> real world issue. I just noticed that it is basically the same
> problem. Adding it would be trivial.
>
> - Prepare for moving most hrtimer callbacks into softirq context and mark
> timers which need to expire in ha
Hi Fabrice
On 6/19/19 11:52 AM, Fabrice Gasnier wrote:
This series adds missing generic 3-cells PWM to STM32 timers dt-bindings,
PWM driver, and the relevant dtsi files for STM32F4, STM32F7 and STM32MP1.
Fabrice Gasnier (5):
dt-bindings: pwm-stm32: add #pwm-cells
pwm: stm32: use 3 cells
system makes progress.
This addresses both the priority inversion and the life lock issues.
This mechanism is not used for timers which are marked IRQSAFE as for those
preemption is disabled accross the callback and therefore this situation
cannot happen. The callbacks for such timers need to be
em. Adding it would be trivial.
- Prepare for moving most hrtimer callbacks into softirq context and mark
timers which need to expire in hard interrupt context even on RT so
they don't get moved.
The timerwheel still needs some special handling for IRQSAFE timers (g)
which I
rcu_note_context_switch() anymore like reported by Grygorii Strashko
and Daniel Wagner.
The patches were contributed by Anna-Maria Gleixner.
This is an all in one commit of the following patches:
| [PATCH] timers: Introduce expiry spin lock
| [PATCH] timers: Drop expiry lock after each timer
The pull request you sent on Thu, 11 Jul 2019 20:02:36 -:
> git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git
> timers-urgent-for-linus
has been merged into torvalds/linux.git:
https://git.kernel.org/torvalds/c/d7fe42a64a19a4140fb94bcf996035319cd3e6b9
Thank you!
--
Deet-do
Linus,
please pull the latest timers-urgent-for-linus git tree from:
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git
timers-urgent-for-linus
up to: 0df1c9868c3a: timekeeping/vsyscall: Use __iter_div_u64_rem()
Two small fixes from the timer departement:
- Prevent the compiler
The pull request you sent on Mon, 08 Jul 2019 09:05:37 -:
> git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git
> timers-core-for-linus
has been merged into torvalds/linux.git:
https://git.kernel.org/torvalds/c/927ba67a63c72ee87d655e30183d1576c3717d3e
Thank you!
--
Deet-doot-
The pull request you sent on Mon, 08 Jul 2019 09:05:37 -:
> git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86-timers-for-linus
has been merged into torvalds/linux.git:
https://git.kernel.org/torvalds/c/2f0f6503e37551eb8d8d5e4d27c78d28a30fed5a
Thank you!
--
Deet-doot-dot, I
Linus,
please pull the latest x86-timers-for-linus git tree from:
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git
x86-timers-for-linus
up to: e44252f4fe79: x86/hpet: Use channel for legacy clockevent storage
A rather large series consolidating the HPET code, which was triggered
Commit-ID: ea99110dd024d2f31bde19dda049f3fbf3816a70
Gitweb: https://git.kernel.org/tip/ea99110dd024d2f31bde19dda049f3fbf3816a70
Author: Thomas Gleixner
AuthorDate: Sun, 23 Jun 2019 15:24:07 +0200
Committer: Thomas Gleixner
CommitDate: Fri, 28 Jun 2019 00:57:26 +0200
x86/hpet: Carve out
Commit-ID: 18e84a2dff00c3c817161a105332cd3fc7592648
Gitweb: https://git.kernel.org/tip/18e84a2dff00c3c817161a105332cd3fc7592648
Author: Thomas Gleixner
AuthorDate: Sun, 23 Jun 2019 15:24:05 +0200
Committer: Thomas Gleixner
CommitDate: Fri, 28 Jun 2019 00:57:25 +0200
x86/hpet: Wrap lega
Commit-ID: e44252f4fe79dd9ca93bcf4e8f74389a5b8452f5
Gitweb: https://git.kernel.org/tip/e44252f4fe79dd9ca93bcf4e8f74389a5b8452f5
Author: Thomas Gleixner
AuthorDate: Sun, 23 Jun 2019 15:24:09 +0200
Committer: Thomas Gleixner
CommitDate: Fri, 28 Jun 2019 00:57:27 +0200
x86/hpet: Use chann
Commit-ID: 49adaa60fa75a04457d30f38321378cdc3547212
Gitweb: https://git.kernel.org/tip/49adaa60fa75a04457d30f38321378cdc3547212
Author: Thomas Gleixner
AuthorDate: Sun, 23 Jun 2019 15:24:08 +0200
Committer: Thomas Gleixner
CommitDate: Fri, 28 Jun 2019 00:57:27 +0200
x86/hpet: Use commo
->flags |= HPET_DEV_VALID;
- num_timers_used++;
- if (num_timers_used == num_possible_cpus())
+ hc->mode = HPET_MODE_CLOCKEVT;
+
+ if (++hpet_base.nr_clockevents == num_possible_cpus())
break;
}
pr_info("%d chann
Commit-ID: 310b5b3eb6ba5d3a92d783b9fa1c5a3ffb5932e9
Gitweb: https://git.kernel.org/tip/310b5b3eb6ba5d3a92d783b9fa1c5a3ffb5932e9
Author: Thomas Gleixner
AuthorDate: Sun, 23 Jun 2019 15:24:06 +0200
Committer: Thomas Gleixner
CommitDate: Fri, 28 Jun 2019 00:57:26 +0200
x86/hpet: Consolida
Commit-ID: 45e0a415634600e608188480bc355b20344f9e3f
Gitweb: https://git.kernel.org/tip/45e0a415634600e608188480bc355b20344f9e3f
Author: Thomas Gleixner
AuthorDate: Sun, 23 Jun 2019 15:24:04 +0200
Committer: Thomas Gleixner
CommitDate: Fri, 28 Jun 2019 00:57:25 +0200
x86/hpet: Use cache
Commit-ID: 2460d5878ad69c178f9ff1cc3eee9f09b017e15f
Gitweb: https://git.kernel.org/tip/2460d5878ad69c178f9ff1cc3eee9f09b017e15f
Author: Thomas Gleixner
AuthorDate: Sun, 23 Jun 2019 15:23:59 +0200
Committer: Thomas Gleixner
CommitDate: Fri, 28 Jun 2019 00:57:22 +0200
x86/hpet: Use cache
Commit-ID: e37f0881e9d9ec8b12f242cc2b78d93259aa7f0f
Gitweb: https://git.kernel.org/tip/e37f0881e9d9ec8b12f242cc2b78d93259aa7f0f
Author: Thomas Gleixner
AuthorDate: Sun, 23 Jun 2019 15:23:58 +0200
Committer: Thomas Gleixner
CommitDate: Fri, 28 Jun 2019 00:57:21 +0200
x86/hpet: Introduce
Commit-ID: d415c7543140f77fe1d2d9d3942cbf51a9737993
Gitweb: https://git.kernel.org/tip/d415c7543140f77fe1d2d9d3942cbf51a9737993
Author: Ingo Molnar
AuthorDate: Sun, 23 Jun 2019 15:24:02 +0200
Committer: Thomas Gleixner
CommitDate: Fri, 28 Jun 2019 00:57:24 +0200
x86/hpet: Rename variab
Commit-ID: af5a1dadf3fcf673906af1a1129b2b7528494ee5
Gitweb: https://git.kernel.org/tip/af5a1dadf3fcf673906af1a1129b2b7528494ee5
Author: Thomas Gleixner
AuthorDate: Sun, 23 Jun 2019 15:24:01 +0200
Committer: Thomas Gleixner
CommitDate: Fri, 28 Jun 2019 00:57:23 +0200
x86/hpet: Add funct
Commit-ID: 9e16e4933e48819a259b8967e72e5765349953b1
Gitweb: https://git.kernel.org/tip/9e16e4933e48819a259b8967e72e5765349953b1
Author: Thomas Gleixner
AuthorDate: Sun, 23 Jun 2019 15:24:00 +0200
Committer: Thomas Gleixner
CommitDate: Fri, 28 Jun 2019 00:57:23 +0200
x86/hpet: Add mode
Commit-ID: 3fe50c34dc1fa8ae2c24ec202b9decbbef72921d
Gitweb: https://git.kernel.org/tip/3fe50c34dc1fa8ae2c24ec202b9decbbef72921d
Author: Ingo Molnar
AuthorDate: Sun, 23 Jun 2019 15:23:55 +0200
Committer: Thomas Gleixner
CommitDate: Fri, 28 Jun 2019 00:57:20 +0200
x86/hpet: Make naming c
@@ -131,26 +131,33 @@ EXPORT_SYMBOL_GPL(is_hpet_enabled);
static void _hpet_print_config(const char *function, int line)
{
- u32 i, timers, l, h;
+ u32 i, id, period, cfg, status, channels, l, h;
+
pr_info("%s(%d):\n", function, line);
- l = hpet_readl(HPET_ID);
Commit-ID: dfe36b573ed320ce311b2cb9251d2543be9e52ac
Gitweb: https://git.kernel.org/tip/dfe36b573ed320ce311b2cb9251d2543be9e52ac
Author: Ingo Molnar
AuthorDate: Sun, 23 Jun 2019 15:23:56 +0200
Committer: Thomas Gleixner
CommitDate: Fri, 28 Jun 2019 00:57:20 +0200
x86/hpet: Clean up comm
Commit-ID: 9bc9e1d4c139497553599a73839ea846dce63f72
Gitweb: https://git.kernel.org/tip/9bc9e1d4c139497553599a73839ea846dce63f72
Author: Ingo Molnar
AuthorDate: Sun, 23 Jun 2019 15:23:54 +0200
Committer: Thomas Gleixner
CommitDate: Fri, 28 Jun 2019 00:57:20 +0200
x86/hpet: Remove not re
Commit-ID: 6bdec41a0cbcbda35c9044915fc8f45503a595a0
Gitweb: https://git.kernel.org/tip/6bdec41a0cbcbda35c9044915fc8f45503a595a0
Author: Thomas Gleixner
AuthorDate: Sun, 23 Jun 2019 15:23:50 +0200
Committer: Thomas Gleixner
CommitDate: Fri, 28 Jun 2019 00:57:18 +0200
x86/hpet: Shuffle c
Commit-ID: 3222daf970f30133cc4c639cbecdc29c4ae91b2b
Gitweb: https://git.kernel.org/tip/3222daf970f30133cc4c639cbecdc29c4ae91b2b
Author: Thomas Gleixner
AuthorDate: Sun, 23 Jun 2019 15:23:51 +0200
Committer: Thomas Gleixner
CommitDate: Fri, 28 Jun 2019 00:57:18 +0200
x86/hpet: Separate
Commit-ID: 3535aa12f7f26fc755514b13aee8fac15741267e
Gitweb: https://git.kernel.org/tip/3535aa12f7f26fc755514b13aee8fac15741267e
Author: Thomas Gleixner
AuthorDate: Sun, 23 Jun 2019 15:23:53 +0200
Committer: Thomas Gleixner
CommitDate: Fri, 28 Jun 2019 00:57:19 +0200
x86/hpet: Decapital
Commit-ID: 44b5be5733e119300115b98409cbcf9a45b8d3f1
Gitweb: https://git.kernel.org/tip/44b5be5733e119300115b98409cbcf9a45b8d3f1
Author: Thomas Gleixner
AuthorDate: Sun, 23 Jun 2019 15:23:52 +0200
Committer: Thomas Gleixner
CommitDate: Fri, 28 Jun 2019 00:57:19 +0200
x86/hpet: Simplify
Commit-ID: 433526cc0502ff13d9b2fd63ba546a202dac0463
Gitweb: https://git.kernel.org/tip/433526cc0502ff13d9b2fd63ba546a202dac0463
Author: Thomas Gleixner
AuthorDate: Sun, 23 Jun 2019 15:23:47 +0200
Committer: Thomas Gleixner
CommitDate: Fri, 28 Jun 2019 00:57:17 +0200
x86/hpet: Mark init
Commit-ID: 8c273f2c81f0756f65b24771196c0eff7ac90e7b
Gitweb: https://git.kernel.org/tip/8c273f2c81f0756f65b24771196c0eff7ac90e7b
Author: Thomas Gleixner
AuthorDate: Sun, 23 Jun 2019 15:23:49 +0200
Committer: Thomas Gleixner
CommitDate: Fri, 28 Jun 2019 00:57:17 +0200
x86/hpet: Move stat
Commit-ID: 853acaf064acf3aad6189b36de814bd381d35133
Gitweb: https://git.kernel.org/tip/853acaf064acf3aad6189b36de814bd381d35133
Author: Thomas Gleixner
AuthorDate: Sun, 23 Jun 2019 15:23:45 +0200
Committer: Thomas Gleixner
CommitDate: Fri, 28 Jun 2019 00:57:16 +0200
x86/hpet: Remove un
Commit-ID: 4ce78e2094fc2736f8ecd04ec85e5566acaed516
Gitweb: https://git.kernel.org/tip/4ce78e2094fc2736f8ecd04ec85e5566acaed516
Author: Thomas Gleixner
AuthorDate: Sun, 23 Jun 2019 15:23:48 +0200
Committer: Thomas Gleixner
CommitDate: Fri, 28 Jun 2019 00:57:17 +0200
x86/hpet: Sanitize
);
static void _hpet_print_config(const char *function, int line)
{
u32 i, timers, l, h;
- printk(KERN_INFO "hpet: %s(%d):\n", function, line);
+ pr_info("%s(%d):\n", function, line);
l = hpet_readl(HPET_ID);
h = hpet_readl(HPET_PERIOD);
Commit-ID: eb8ec32c45a87efbc6683b771597084c4d904a17
Gitweb: https://git.kernel.org/tip/eb8ec32c45a87efbc6683b771597084c4d904a17
Author: Thomas Gleixner
AuthorDate: Sun, 23 Jun 2019 15:23:46 +0200
Committer: Thomas Gleixner
CommitDate: Fri, 28 Jun 2019 00:57:16 +0200
x86/hpet: Remove th
Commit-ID: 7c4b0e0898ebff4d4821d5dd7a564903a1e88821
Gitweb: https://git.kernel.org/tip/7c4b0e0898ebff4d4821d5dd7a564903a1e88821
Author: Thomas Gleixner
AuthorDate: Sun, 23 Jun 2019 15:23:44 +0200
Committer: Thomas Gleixner
CommitDate: Fri, 28 Jun 2019 00:57:16 +0200
x86/hpet: Remove po
Commit-ID: 9b0b28de837a3a59b409613d15e90d5569938945
Gitweb: https://git.kernel.org/tip/9b0b28de837a3a59b409613d15e90d5569938945
Author: Thomas Gleixner
AuthorDate: Sun, 23 Jun 2019 15:23:43 +0200
Committer: Thomas Gleixner
CommitDate: Fri, 28 Jun 2019 00:57:15 +0200
x86/hpet: Restructu
Commit-ID: 36b9017f0250a5299bb715b3b8c41b5e2b05b320
Gitweb: https://git.kernel.org/tip/36b9017f0250a5299bb715b3b8c41b5e2b05b320
Author: Thomas Gleixner
AuthorDate: Sun, 23 Jun 2019 15:23:41 +0200
Committer: Thomas Gleixner
CommitDate: Fri, 28 Jun 2019 00:57:15 +0200
x86/hpet: Simplify
From: Dmitry Osipenko
Assign TMR1-4 per-CPU core on 32bit Tegra's in a way it is done for
Tegra210. In a result each core can handle its own timer events, less
code is unique to ARM64 and Tegra's clock events driver now has higher
rating on all Tegra's, replacing the ARM's TWD timer which isn't v
-timers: Use spin_lock_irq() in itimer_delete()
itimer_delete() uses spin_lock_irqsave() to obtain a `flags' variable
which can then be passed to unlock_timer(). It uses already spin_lock
locking for the structure instead of lock_timer() because it has a timer
which can not be removed by othe
-timers: Remove "it_signal = NULL" assignment in itimer_delete()
itimer_delete() is invoked during do_exit(). At this point it is the
last thread in the group dying and doing the clean up.
Since it is the last thread in the group, there can not be any other
task attempting to lock the it
: timers: freq-step: Update maximum acceptable precision and errors
PTI has a significant impact on precision of the MONOTONIC_RAW clock,
which prevents a lot of computers from running the freq-step test.
Increase the maximum acceptable precision for the test to not be skipped
to 500 nanoseconds.
After
()) is not required.
The assignment and comment was copied in commit 0e568881178ff ("[PATCH]
fix posix-timers to have proper per-process scope") from
sys_timer_delete() which was/is the syscall interface and requires the
assignment.
Remove the superfluous ->it_signal = NULL assignment
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