On Fri, Dec 11 2020 at 22:59, Paolo Bonzini wrote:
> On 11/12/20 22:04, Thomas Gleixner wrote:
> The nanosecond and TSC times are sent as part of the paused-VM state at
> the very end of the live migration process.
>
> So it's still true that the time advances during live migrat
The following commit has been merged into the irq/core branch of tip:
Commit-ID: a578bb32cb1a46676caae72dc0c668630ab40c1f
Gitweb:
https://git.kernel.org/tip/a578bb32cb1a46676caae72dc0c668630ab40c1f
Author:Thomas Gleixner
AuthorDate:Thu, 10 Dec 2020 20:25:38 +01:00
The following commit has been merged into the irq/core branch of tip:
Commit-ID: fb4f676fc901cb547226efb3e69ffeaeefa124be
Gitweb:
https://git.kernel.org/tip/fb4f676fc901cb547226efb3e69ffeaeefa124be
Author:Thomas Gleixner
AuthorDate:Thu, 10 Dec 2020 20:25:41 +01:00
The following commit has been merged into the irq/core branch of tip:
Commit-ID: 276b1e6e6fecc2f138c72519705dabc8bd01ffa9
Gitweb:
https://git.kernel.org/tip/276b1e6e6fecc2f138c72519705dabc8bd01ffa9
Author:Thomas Gleixner
AuthorDate:Thu, 10 Dec 2020 20:25:40 +01:00
The following commit has been merged into the irq/core branch of tip:
Commit-ID: fe80f1d579dfd4edf78a66c3bd3befa985b4b02b
Gitweb:
https://git.kernel.org/tip/fe80f1d579dfd4edf78a66c3bd3befa985b4b02b
Author:Thomas Gleixner
AuthorDate:Thu, 10 Dec 2020 20:25:45 +01:00
The following commit has been merged into the irq/core branch of tip:
Commit-ID: 63ca4e066a62afce8ebaf75ebd4c6ef67f7bb5ee
Gitweb:
https://git.kernel.org/tip/63ca4e066a62afce8ebaf75ebd4c6ef67f7bb5ee
Author:Thomas Gleixner
AuthorDate:Thu, 10 Dec 2020 20:25:43 +01:00
The following commit has been merged into the irq/core branch of tip:
Commit-ID: 766ba1f937be5ec418bd759e40fccc0c8c42e271
Gitweb:
https://git.kernel.org/tip/766ba1f937be5ec418bd759e40fccc0c8c42e271
Author:Thomas Gleixner
AuthorDate:Thu, 10 Dec 2020 20:25:49 +01:00
The following commit has been merged into the irq/core branch of tip:
Commit-ID: d53c576bd3d4787b3d7d0d814b28ae67099d84a1
Gitweb:
https://git.kernel.org/tip/d53c576bd3d4787b3d7d0d814b28ae67099d84a1
Author:Thomas Gleixner
AuthorDate:Thu, 10 Dec 2020 20:25:53 +01:00
The following commit has been merged into the irq/core branch of tip:
Commit-ID: b64217174467e1c4c3da04a7f7835393fa234818
Gitweb:
https://git.kernel.org/tip/b64217174467e1c4c3da04a7f7835393fa234818
Author:Thomas Gleixner
AuthorDate:Thu, 10 Dec 2020 20:25:50 +01:00
The following commit has been merged into the irq/core branch of tip:
Commit-ID: ea5f36556b8bde14234ec223ebc59968ade4735a
Gitweb:
https://git.kernel.org/tip/ea5f36556b8bde14234ec223ebc59968ade4735a
Author:Thomas Gleixner
AuthorDate:Thu, 10 Dec 2020 20:25:44 +01:00
The following commit has been merged into the irq/core branch of tip:
Commit-ID: 27fb43cb32d016366d1d87986970d5be7d6607e1
Gitweb:
https://git.kernel.org/tip/27fb43cb32d016366d1d87986970d5be7d6607e1
Author:Thomas Gleixner
AuthorDate:Thu, 10 Dec 2020 20:25:47 +01:00
The following commit has been merged into the irq/core branch of tip:
Commit-ID: a07d244f00de679c66643e89eba6e1baa62d3517
Gitweb:
https://git.kernel.org/tip/a07d244f00de679c66643e89eba6e1baa62d3517
Author:Thomas Gleixner
AuthorDate:Thu, 10 Dec 2020 20:25:39 +01:00
The following commit has been merged into the irq/core branch of tip:
Commit-ID: db123744af5d237048f23ede05cc7ef0dc48db01
Gitweb:
https://git.kernel.org/tip/db123744af5d237048f23ede05cc7ef0dc48db01
Author:Thomas Gleixner
AuthorDate:Thu, 10 Dec 2020 20:25:37 +01:00
The following commit has been merged into the irq/core branch of tip:
Commit-ID: 93b6adbf0420a7bd84167a4feb289cc2c1b4efca
Gitweb:
https://git.kernel.org/tip/93b6adbf0420a7bd84167a4feb289cc2c1b4efca
Author:Thomas Gleixner
AuthorDate:Thu, 10 Dec 2020 20:26:05 +01:00
The following commit has been merged into the irq/core branch of tip:
Commit-ID: f61b8351facda691f1564097074976b30e987a81
Gitweb:
https://git.kernel.org/tip/f61b8351facda691f1564097074976b30e987a81
Author:Thomas Gleixner
AuthorDate:Thu, 10 Dec 2020 20:26:03 +01:00
On Thu, Dec 10 2020 at 12:23, Daniel Lezcano wrote:
> please consider pulling those 3 last changes which fixes some issues on
> the drivers.
>
> The following changes since commit fef92cd2bc04c64bb3743d40c0b4be47aedf9e23:
>
> Merge tag 'timers-v5.11' of
>
On Fri, Dec 11 2020 at 23:21, Frederic Weisbecker wrote:
> On Sun, Dec 06, 2020 at 10:12:54PM +0100, Thomas Gleixner wrote:
>> tick_handover_do_timer() which is invoked when a CPU is unplugged has a
>> @@ -407,17 +407,13 @@ EXPORT_SYMBOL_GPL(tick_broadcast_oneshot
>>
Andrew,
On Fri, Dec 11 2020 at 22:21, Andrew Cooper wrote:
> On 11/12/2020 21:27, Thomas Gleixner wrote:
>> It's not any different from the hardware example at least not as far as
>> I understood the code.
>
> Xen's event channels do have a couple of quirks.
Why am I not
The following commit has been merged into the timers/core branch of tip:
Commit-ID: aa3b66f401b372598b29421bab4d17b631b92407
Gitweb:
https://git.kernel.org/tip/aa3b66f401b372598b29421bab4d17b631b92407
Author:Thomas Gleixner
AuthorDate:Fri, 04 Dec 2020 11:55:19 +01:00
On Fri, Dec 11 2020 at 22:08, Thomas Gleixner wrote:
> On Fri, Dec 11 2020 at 19:53, Andy Shevchenko wrote:
>
>> On Thu, Dec 10, 2020 at 10:14 PM Thomas Gleixner wrote:
>>>
>>> irq_set_lockdep_class() is used from modules and requires irq_to_desc() to
>>>
On Fri, Dec 11 2020 at 09:29, boris ostrovsky wrote:
> On 12/11/20 7:37 AM, Thomas Gleixner wrote:
>> On Fri, Dec 11 2020 at 13:10, Jürgen Groß wrote:
>>> On 11.12.20 00:20, boris.ostrov...@oracle.com wrote:
>>>> On 12/10/20 2:26 PM, Thomas Gleixner wrote:
>
On Fri, Dec 11 2020 at 14:19, David Laight wrote:
> From: Thomas Gleixner
>> You can't catch that. If this really becomes an issue you need a
>> sequence counter around it.
>
> Or just two copies of the high word.
> Provided the accesses are sequenced:
> writer:
>
On Fri, Dec 11 2020 at 11:18, Marcelo Tosatti wrote:
> On Fri, Dec 11, 2020 at 02:30:34PM +0100, Thomas Gleixner wrote:
> Unless you notify applications to invalidate their time reads,
> i can't see a way to fix this.
This is just wrong. Suspend/resume handles that fine and t
On Fri, Dec 11 2020 at 19:53, Andy Shevchenko wrote:
> On Thu, Dec 10, 2020 at 10:14 PM Thomas Gleixner wrote:
>>
>> irq_set_lockdep_class() is used from modules and requires irq_to_desc() to
>> be exported. Move it into the core code which lifts another requirem
On Tue, Dec 08 2020 at 09:50, Sebastian Andrzej Siewior wrote:
> On 2020-12-07 08:06:48 [-0800], Paul E. McKenney wrote:
>> > Yes, but it triggers frequently. Like `rcuc' is somehow is aligned with
>> > the timeout.
>>
>> Given that a lot of RCU processing is event-driven based on timers,
>> and
On Thu, Dec 10 2020 at 21:27, Marcelo Tosatti wrote:
> On Thu, Dec 10, 2020 at 10:48:10PM +0100, Thomas Gleixner wrote:
>> You really all live in a seperate universe creating your own rules how
>> things which other people work hard on to get it correct can be screwed
>>
On Fri, Dec 11 2020 at 10:13, Tvrtko Ursulin wrote:
> On 10/12/2020 19:25, Thomas Gleixner wrote:
>>
>> Aside of that the count is per interrupt line and therefore takes
>> interrupts from other devices into account which share the interrupt line
>> and are not han
On Fri, Dec 11 2020 at 13:10, Jürgen Groß wrote:
> On 11.12.20 00:20, boris.ostrov...@oracle.com wrote:
>>
>> On 12/10/20 2:26 PM, Thomas Gleixner wrote:
>>> All event channel setups bind the interrupt on CPU0 or the target CPU for
>>> percpu interrupt
On Fri, Dec 11 2020 at 07:17, Jürgen Groß wrote:
> On 11.12.20 00:20, boris.ostrov...@oracle.com wrote:
>>
>> On 12/10/20 2:26 PM, Thomas Gleixner wrote:
>>> All event channel setups bind the interrupt on CPU0 or the target CPU for
>>> percpu interrupt
The following commit has been merged into the timers/core branch of tip:
Commit-ID: 69eca258c85000564577642ba28335eb4e1df8f0
Gitweb:
https://git.kernel.org/tip/69eca258c85000564577642ba28335eb4e1df8f0
Author:Thomas Gleixner
AuthorDate:Sun, 06 Dec 2020 22:46:20 +01:00
The following commit has been merged into the timers/core branch of tip:
Commit-ID: 354c796b9270eb4780e59e3bdb83a3ae4930a832
Gitweb:
https://git.kernel.org/tip/354c796b9270eb4780e59e3bdb83a3ae4930a832
Author:Thomas Gleixner
AuthorDate:Sun, 06 Dec 2020 22:46:17 +01:00
The following commit has been merged into the timers/core branch of tip:
Commit-ID: 05a0302c35481e9b47fb90ba40922b0a4cae40d8
Gitweb:
https://git.kernel.org/tip/05a0302c35481e9b47fb90ba40922b0a4cae40d8
Author:Thomas Gleixner
AuthorDate:Sun, 06 Dec 2020 22:46:14 +01:00
The following commit has been merged into the timers/core branch of tip:
Commit-ID: 76e87d96b30b5fee91b381fbc444a3eabcd9469a
Gitweb:
https://git.kernel.org/tip/76e87d96b30b5fee91b381fbc444a3eabcd9469a
Author:Thomas Gleixner
AuthorDate:Sun, 06 Dec 2020 22:46:21 +01:00
The following commit has been merged into the timers/core branch of tip:
Commit-ID: c9e6189fb03123a7dfb93589280347b46f30b161
Gitweb:
https://git.kernel.org/tip/c9e6189fb03123a7dfb93589280347b46f30b161
Author:Thomas Gleixner
AuthorDate:Sun, 06 Dec 2020 22:46:18 +01:00
The following commit has been merged into the timers/core branch of tip:
Commit-ID: 33e62e832384c8cb523044e0e9d99d7133f98e93
Gitweb:
https://git.kernel.org/tip/33e62e832384c8cb523044e0e9d99d7133f98e93
Author:Thomas Gleixner
AuthorDate:Sun, 06 Dec 2020 22:46:19 +01:00
The following commit has been merged into the timers/core branch of tip:
Commit-ID: b0ecd8e8c5ef376777277c4c2db7de92ac59f23f
Gitweb:
https://git.kernel.org/tip/b0ecd8e8c5ef376777277c4c2db7de92ac59f23f
Author:Thomas Gleixner
AuthorDate:Sun, 06 Dec 2020 22:46:16 +01:00
The following commit has been merged into the timers/core branch of tip:
Commit-ID: dcf257e92622ba0e25fdc4b6699683e7ae67e2a1
Gitweb:
https://git.kernel.org/tip/dcf257e92622ba0e25fdc4b6699683e7ae67e2a1
Author:Thomas Gleixner
AuthorDate:Sun, 06 Dec 2020 22:46:15 +01:00
On Mon, Dec 07 2020 at 17:05, Jason Gunthorpe wrote:
> On Sun, Dec 06, 2020 at 10:46:21PM +0100, Thomas Gleixner wrote:
>> static void sync_hw_clock(struct work_struct *work)
>> {
>> +static unsigned long offset_nsec = NSEC_PER_SEC / 2;
>
> A comment here exp
Alexandre,
On Fri, Dec 11 2020 at 00:59, Alexandre Belloni wrote:
> On 06/12/2020 22:46:17+0100, Thomas Gleixner wrote:
>> /* Drivers can revise this default after allocating the device. */
>> -rtc->set_offset_nsec = NSEC_PER_SEC / 2;
>> +rtc->set_offset
On Thu, Dec 10 2020 at 18:20, boris ostrovsky wrote:
> On 12/10/20 2:26 PM, Thomas Gleixner wrote:
>> All event channel setups bind the interrupt on CPU0 or the target CPU for
>> percpu interrupts and overwrite the affinity mask with the corresponding
>> cpumask. Tha
On Thu, Dec 10 2020 at 18:19, boris ostrovsky wrote:
> On 12/10/20 2:26 PM, Thomas Gleixner wrote:
>> -EXPORT_SYMBOL_GPL(bind_evtchn_to_irq_lateeoi);
>
> include/xen/events.h also needs to be updated (and in the next patch for
> xen_set_affinity_evtchn() as well).
Darn, I lost that.
On Thu, Dec 10 2020 at 15:19, Andy Lutomirski wrote:
>> On Dec 10, 2020, at 2:28 PM, Thomas Gleixner wrote:
>> Can we please focus on real problems instead of making up new ones?
>>
>> Correctness of time is a real problem despite the believe of virt folks
>> that i
On Thu, Dec 10 2020 at 12:26, Marcelo Tosatti wrote:
> On Wed, Dec 09, 2020 at 09:58:23PM +0100, Thomas Gleixner wrote:
>> Marcelo,
>>
>> On Wed, Dec 09 2020 at 13:34, Marcelo Tosatti wrote:
>> > On Tue, Dec 08, 2020 at 10:33:15PM +0100, Thomas Gleixner wrote:
>
The following commit has been merged into the x86/apic branch of tip:
Commit-ID: 058df195c23403f91acc028e39ca2ad599d0af52
Gitweb:
https://git.kernel.org/tip/058df195c23403f91acc028e39ca2ad599d0af52
Author:Thomas Gleixner
AuthorDate:Thu, 10 Dec 2020 21:15:04 +01:00
The following commit has been merged into the x86/urgent branch of tip:
Commit-ID: 190113b4c6531c8e09b31d5235f9b5175cbb0f72
Gitweb:
https://git.kernel.org/tip/190113b4c6531c8e09b31d5235f9b5175cbb0f72
Author:Thomas Gleixner
AuthorDate:Thu, 10 Dec 2020 21:18:22 +01:00
On Thu, Dec 10 2020 at 14:01, Andy Lutomirski wrote:
> On Thu, Dec 10, 2020 at 1:25 PM Thomas Gleixner wrote:
>> I'm still convinced that a notification about 'we take a nap' will be
>> more robust, less complex and more trivial to backport.
>
> What do you have in mind? Su
Andy,
On Thu, Dec 10 2020 at 07:16, Andy Lutomirski wrote:
>> On Dec 10, 2020, at 6:52 AM, Maxim Levitsky wrote:
>> On Thu, 2020-12-10 at 12:48 +0100, Paolo Bonzini wrote:
>>>> On 08/12/20 22:20, Thomas Gleixner wrote:
>>>> So now life migration comes a
On Thu, Dec 10 2020 at 14:01, Peter Zijlstra wrote:
> On Thu, Dec 10, 2020 at 01:22:02PM +0100, Paolo Bonzini wrote:
>> On 10/12/20 13:14, Peter Zijlstra wrote:
>> > On Thu, Dec 10, 2020 at 12:42:36PM +0100, Paolo Bonzini wrote:
>> > > On 07/12/20 18:41, Thomas
inity mask in irq descriptor")
Reported-by: Shung-Hsi Yu
Reported-by: Prarit Bhargava
Signed-off-by: Thomas Gleixner
Tested-by: Shung-Hsi Yu
Cc: sta...@vger.kernel.org
---
arch/x86/kernel/apic/vector.c | 24 ++--
1 file changed, 14 insertions(+), 10 deletions(-)
---
restore with a conditional STI.
That code is a historical mess and none of this is needed. Make it
straightforward use local_irq_disable()/enable() as that's all what is
required. It is invoked from interrupt enabled code nowadays.
Reported-by: Mark Rutland
Signed-off-by: Thomas Gleixner
Tested
.
Signed-off-by: Thomas Gleixner
---
arch/alpha/kernel/sys_jensen.c |2 +-
arch/x86/kernel/topology.c |1 +
include/linux/interrupt.h |1 +
include/linux/irqdesc.h|7 +--
kernel/irq/manage.c| 17 +
5 files changed, 21 insertions
irq_set_lockdep_class() is used from modules and requires irq_to_desc() to
be exported. Move it into the core code which lifts another requirement for
the export.
Signed-off-by: Thomas Gleixner
---
include/linux/irqdesc.h | 10 --
kernel/irq/irqdesc.c| 14 ++
2 files
These checks are used by modules and prevent the removal of the export of
irq_to_desc(). Move the accessor into the core.
Signed-off-by: Thomas Gleixner
---
include/linux/irqdesc.h | 17 +
kernel/irq/manage.c | 17 +
2 files changed, 22 insertions(+), 12
The SMP variant works perfectly fine on UP as well.
Signed-off-by: Thomas Gleixner
Cc: "James E.J. Bottomley"
Cc: Helge Deller
Cc: afzal mohammed
Cc: linux-par...@vger.kernel.org
---
arch/parisc/kernel/irq.c |5 +
1 file changed, 1 insertion(+), 4 deletions(-)
--- a/a
No more users outside the core code.
Signed-off-by: Thomas Gleixner
---
include/linux/kernel_stat.h |1 -
kernel/irq/irqdesc.c| 19 ++-
2 files changed, 6 insertions(+), 14 deletions(-)
--- a/include/linux/kernel_stat.h
+++ b/include/linux/kernel_stat.h
@@ -67,7
A recent request to export kstat_irqs() pointed to a copy of the same in
the i915 code, which made me look for further usage of irq descriptors in
drivers.
The usage in drivers ranges from creative to broken in all colours.
irqdesc.h clearly says that this is core functionality and the fact C
means that checking the affinity mask itself does not really tell
about the actual target CPUs.
Signed-off-by: Thomas Gleixner
Cc: Tariq Toukan
Cc: "David S. Miller"
Cc: Jakub Kicinski
Cc: net...@vger.kernel.org
Cc: linux-r...@vger.kernel.org
---
drivers/net/ethernet/mellanox/ml
chip data of the top level chip of a hierarchy. It does not
matter in this case because the chip is the top level chip, but that
doesn't make it more correct.
Signed-off-by: Thomas Gleixner
Cc: Lorenzo Pieralisi
Cc: Rob Herring
Cc: Bjorn Helgaas
Cc: Michal Simek
Cc: linux-...@vger.kernel.org
().
This makes XEN on x86 use the same mechanics as on e.g. ARM64 where
deferred affinity setting is not required and not implemented and the code
path in the ack functions is compiled out.
Signed-off-by: Thomas Gleixner
Cc: Boris Ostrovsky
Cc: Juergen Gross
Cc: Stefano Stabellini
Cc: xen-de
to contain cpumask_of(0).
As the CPU0 enforcement was in place _before_ this was implemented it's
entirely unclear how that can ever have worked at all.
Remove it as preparation for doing it proper.
Signed-off-by: Thomas Gleixner
Cc: Boris Ostrovsky
Cc: Juergen Gross
Cc: Stefano Stabellini
Cc: xen-de
Most users of kstat_irqs_cpu() have the irq descriptor already. No point in
calling into the core code and looking it up once more.
Use it in per_cpu_count_show() to start with.
Signed-off-by: Thomas Gleixner
---
include/linux/irqdesc.h |6 ++
kernel/irq/irqdesc.c|4 ++--
2
Provide an accessor to the effective interrupt affinity mask. Going to be
used to replace open coded fiddling with the irq descriptor.
Signed-off-by: Thomas Gleixner
---
include/linux/irq.h |7 +++
1 file changed, 7 insertions(+)
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
The irq descriptor is already there, no need to look it up again.
Signed-off-by: Thomas Gleixner
Cc: Mark Rutland
Cc: Catalin Marinas
Cc: Will Deacon
Cc: Marc Zyngier
Cc: linux-arm-ker...@lists.infradead.org
---
arch/arm64/kernel/smp.c |2 +-
1 file changed, 1 insertion(+), 1 deletion
The irq descriptor is already there, no need to look it up again.
Signed-off-by: Thomas Gleixner
Cc: "James E.J. Bottomley"
Cc: Helge Deller
Cc: afzal mohammed
Cc: linux-par...@vger.kernel.org
---
arch/parisc/kernel/irq.c |2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
Both the per cpu stats and the accumulated count are accessed lockless and
can be concurrently modified. That's intentional and the stats are a rough
estimate anyway. Annotate them with data_race().
Signed-off-by: Thomas Gleixner
---
kernel/irq/irqdesc.c |4 ++--
kernel/irq/proc.c|5
No more (ab)use in modules finally. Remove the export so there won't come
new ones.
Signed-off-by: Thomas Gleixner
---
kernel/irq/irqdesc.c |1 -
1 file changed, 1 deletion(-)
--- a/kernel/irq/irqdesc.c
+++ b/kernel/irq/irqdesc.c
@@ -352,7 +352,6 @@ struct irq_desc *irq_to_desc(unsigned
chip data of the top level chip of a hierarchy. It does not
matter in this case because the chip is the top level chip, but that
doesn't make it more correct.
Signed-off-by: Thomas Gleixner
Cc: Karthikeyan Mitran
Cc: Hou Zhiqiang
Cc: Lorenzo Pieralisi
Cc: Rob Herring
Cc: Bjorn Helgaas
Cc
Let the core code do the fiddling with irq_desc.
Signed-off-by: Thomas Gleixner
Cc: Linus Walleij
Cc: linux-arm-ker...@lists.infradead.org
Cc: linux-g...@vger.kernel.org
---
drivers/pinctrl/nomadik/pinctrl-nomadik.c |3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
--- a/drivers
Nothing uses the result and nothing should ever use it in driver code.
Signed-off-by: Thomas Gleixner
Cc: Jani Nikula
Cc: Joonas Lahtinen
Cc: Rodrigo Vivi
Cc: David Airlie
Cc: Daniel Vetter
Cc: Pankaj Bharadiya
Cc: Chris Wilson
Cc: Wambui Karuga
Cc: intel-...@lists.freedesktop.org
Cc
of subsystem
boundaries and racy against concurrent modifications of the interrupt
descriptor.
Print the irq line instead so the information can be looked up in a sane
way in /proc/interrupts.
Signed-off-by: Thomas Gleixner
Cc: Linus Walleij
Cc: Lee Jones
Cc: linux-arm-ker...@lists.infradead.org
The irq descriptor is already there, no need to look it up again.
Signed-off-by: Thomas Gleixner
Cc: Christian Borntraeger
Cc: Heiko Carstens
Cc: linux-s...@vger.kernel.org
---
arch/s390/kernel/irq.c |2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/s390/kernel/irq.c
+++ b
.
Retrieve a pointer to the affinity mask itself and use that. It's still
using an interface which is usually not for random drivers, but definitely
less hideous than the previous hack.
Signed-off-by: Thomas Gleixner
Cc: Tariq Toukan
Cc: "David S. Miller"
Cc: Jakub Kicinsk
means that checking the affinity mask itself does not really tell
about the actual target CPUs.
Signed-off-by: Thomas Gleixner
Cc: Saeed Mahameed
Cc: Leon Romanovsky
Cc: "David S. Miller"
Cc: Jakub Kicinski
Cc: net...@vger.kernel.org
Cc: linux-r...@vger.kernel.org
---
drivers/ne
.
Retrieve a pointer to the affinity mask itself and use that. It's still
using an interface which is usually not for random drivers, but definitely
less hideous than the previous hack.
Signed-off-by: Thomas Gleixner
---
drivers/net/ethernet/mellanox/mlx5/core/en.h |2 +-
drivers/net/ethernet
Signed-off-by: Thomas Gleixner
Cc: Boris Ostrovsky
Cc: Juergen Gross
Cc: Stefano Stabellini
Cc: xen-de...@lists.xenproject.org
---
drivers/xen/events/events_base.c |6 --
1 file changed, 6 deletions(-)
--- a/drivers/xen/events/events_base.c
+++ b/drivers/xen/events/events_base.c
Use the proper core function.
Signed-off-by: Thomas Gleixner
Cc: Jon Mason
Cc: Dave Jiang
Cc: Allen Hubbe
Cc: linux-...@googlegroups.com
---
drivers/ntb/msi.c |4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
--- a/drivers/ntb/msi.c
+++ b/drivers/ntb/msi.c
@@ -282,15 +282,13
To prepare for interrupt spreading reduce the storage size of
irq_info::spurious_cnt to u8 so the required flag for the spreading logic
will not increase the storage size.
Protect the usage site against overruns.
Signed-off-by: Thomas Gleixner
Cc: Boris Ostrovsky
Cc: Juergen Gross
Cc: Stefano
Keep track of the assignments of event channels to CPUs and select the
online CPU with the least assigned channels in the affinity mask which is
handed to irq_chip::irq_set_affinity() from the core code.
Signed-off-by: Thomas Gleixner
Cc: Boris Ostrovsky
Cc: Juergen Gross
Cc: Stefano
The irq descriptor is already there, no need to look it up again.
Signed-off-by: Thomas Gleixner
Cc: Marc Zyngier
Cc: Russell King
Cc: linux-arm-ker...@lists.infradead.org
---
arch/arm/kernel/smp.c |2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/arm/kernel/smp.c
+++ b
irq().
This also prepares for proper interrupt spreading.
Signed-off-by: Thomas Gleixner
Cc: Boris Ostrovsky
Cc: Juergen Gross
Cc: Stefano Stabellini
Cc: xen-de...@lists.xenproject.org
---
drivers/xen/events/events_base.c | 42 ++-
1 file changed, 28 inserti
only counts interrupts which
originate from the graphics card.
To avoid atomics or heuristics of some sort make the counter field
'unsigned long'. That limits the count to 4e9 on 32bit which is a lot and
postprocessing can easily deal with the occasional wraparound.
Signed-off-by: Thomas Gleixner
On Thu, Dec 10 2020 at 17:09, Tvrtko Ursulin wrote:
> On 10/12/2020 16:35, Thomas Gleixner wrote:
>> I'll send out a series addressing irq_to_desc() (ab)use all over the
>> place shortly. i915 is in there...
>
> Yep we don't need atomic, my bad. And we would care about the sha
On Thu, Dec 10 2020 at 10:45, Tvrtko Ursulin wrote:
> On 10/12/2020 07:53, Joonas Lahtinen wrote:
>> I think later in the thread there was a suggestion to replace this with
>> simple counter increment in IRQ handler.
>
> It was indeed unsafe until recent b00bccb3f0bb ("drm/i915/pmu: Handle
> PCI
> Acked-by: Peter Zijlstra (Intel)
Reviewed-by: Thomas Gleixner
On Fri, Nov 20 2020 at 12:46, Juergen Gross wrote:
> Xen PV guests don't use IST. For double fault interrupts switch to
> the same model as NMI.
>
> Correct a typo in a comment while copying it.
>
> Signed-off-by: Juergen Gross
> Acked-by: Peter Zijlstra (Intel)
Reviewed-by: Thomas Gleixner
On Fri, Nov 20 2020 at 12:46, Juergen Gross wrote:
> Xen PV guests don't use IST. For machine check interrupts switch to
> the same model as debug interrupts.
>
> Signed-off-by: Juergen Gross
> Acked-by: Peter Zijlstra (Intel)
Reviewed-by: Thomas Gleixner
Marcelo,
On Wed, Dec 09 2020 at 13:34, Marcelo Tosatti wrote:
> On Tue, Dec 08, 2020 at 10:33:15PM +0100, Thomas Gleixner wrote:
>> On Tue, Dec 08 2020 at 15:11, Marcelo Tosatti wrote:
>> > max_cycles overflow. Sent a message to Maxim describing it.
>>
>> Truly
On Wed, Dec 09 2020 at 18:15, Mark Rutland wrote:
> In arch/x86/kernel/apic/io_apic.c's timer_irq_works() we do:
>
> local_irq_save(flags);
> local_irq_enable();
>
> [ trigger an IRQ here ]
>
> local_irq_restore(flags);
>
> ... and in check_timer() we call that a number of
Hi Shung-Hsi!
On Wed, Dec 09 2020 at 14:33, Shung-Hsi Yu wrote:
> On Tue, Nov 10, 2020 at 09:56:27PM +0100, Thomas Gleixner wrote:
>> The real problem is irqbalanced aggressively exhausting the vector space
>> of a _whole_ socket to the point that there is not a single vector lef
On Wed, Dec 09 2020 at 13:42, Peter Zijlstra wrote:
> On Wed, Dec 09, 2020 at 01:36:54PM +0100, Thomas Gleixner wrote:
>> On Wed, Dec 09 2020 at 11:11, Peter Zijlstra wrote:
>> > On Fri, Dec 04, 2020 at 06:01:55PM +0100, Thomas Gleixner wrote:
>> >> From: Thomas Gl
On Wed, Dec 09 2020 at 05:01, Alexandre Belloni wrote:
> On 09/12/2020 01:33:08+0100, Thomas Gleixner wrote:
>> > The following series addresses the above:
>> >
>> > 1) Fix the readout function of MC146818
>> > 2) Fix the rtc-cmos offset
>&g
On Wed, Dec 09 2020 at 11:11, Peter Zijlstra wrote:
> On Fri, Dec 04, 2020 at 06:01:55PM +0100, Thomas Gleixner wrote:
>> From: Thomas Gleixner
>> +/* First entry of a task into a BH disabled section? */
>> +if (!current->softirq_disable_cnt) {
>>
Andy,
On Tue, Dec 08 2020 at 20:08, Andy Lutomirski wrote:
> On Tue, Dec 8, 2020 at 4:19 PM Thomas Gleixner wrote:
>> On Tue, Dec 08 2020 at 12:32, Andy Lutomirski wrote:
>> all the way through the end and then come up with a real proposal which
>> solves all of
On Tue, Dec 08 2020 at 11:05, Johan Hovold wrote:
> On Tue, Nov 24, 2020 at 02:42:47PM +0100, Johan Hovold wrote:
>> Fix CPU devicetree-node lookups by implementing
>> arch_match_cpu_phys_id().
>>
>> This allows using of_get_cpu_node() and of_cpu_device_node_get() to look
>> up CPU devicetree
Alexandre,
On Sun, Dec 06 2020 at 22:46, Thomas Gleixner wrote:
> Miroslav ran into a situation where the periodic RTC synchronization almost
> never was able to hit the time window for the update. That happens due the
> usage of delayed_work and the properties of the timer wheel.
On Tue, Dec 08 2020 at 12:32, Andy Lutomirski wrote:
>> On Dec 8, 2020, at 11:25 AM, Thomas Gleixner wrote:
>> One issue here is that guests might want to run their own NTP/PTP. One
>> reason to do that is that some people prefer the leap second smearing
>> NTP se
On Tue, Dec 08 2020 at 13:11, Michael Ellerman wrote:
> "Enrico Weigelt, metux IT consult" writes:
>> All archs, except Alpha, print out the irq number in hex, but the message
>> looks like it was a decimal number, which is quite confusing. Fixing this
>> by adding "0x" prefix.
>
> Arguably
On Tue, Dec 08 2020 at 15:12, Marcelo Tosatti wrote:
> On Tue, Dec 08, 2020 at 06:25:13PM +0200, Maxim Levitsky wrote:
>> On Tue, 2020-12-08 at 17:02 +0100, Thomas Gleixner wrote:
>> The "bug" is that if VMM moves a hardware time counter (tsc or anything
>> else)
&
On Tue, Dec 08 2020 at 15:11, Marcelo Tosatti wrote:
> On Tue, Dec 08, 2020 at 05:02:07PM +0100, Thomas Gleixner wrote:
>> On Tue, Dec 08 2020 at 16:50, Maxim Levitsky wrote:
>> > On Mon, 2020-12-07 at 20:29 -0300, Marcelo Tosatti wrote:
>> >> > +This ioctl
On Tue, Dec 08 2020 at 09:33, Andy Lutomirski wrote:
> On Tue, Dec 8, 2020 at 8:26 AM Maxim Levitsky wrote:
>
> IIRC we introduced mul_u64_u32_shift() for roughly this reason,but we
> don't seem to be using it in the relevant code paths. We should be
> able to use the same basic math with wider
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