Subject: [RFC patch 6/9] Re: [PATCH] Stringify support commas
This is a no-no for those archs that still use -traditional.
I dunno if this is a problem for you at the moment and the
right fix is anyway to nuke -traditional.
Sam
Signed-off-by: Mathieu Desnoyers [EMAIL PROTECTED
* Paul Mackerras ([EMAIL PROTECTED]) wrote:
Mathieu Desnoyers writes:
Subject: [RFC patch 6/9] Re: [PATCH] Stringify support commas
This is a no-no for those archs that still use -traditional.
I dunno if this is a problem for you at the moment and the
right fix is anyway to nuke
Signed-off-by: Mathieu Desnoyers [EMAIL PROTECTED]
CC: [EMAIL PROTECTED]
CC: linuxppc-dev@ozlabs.org
--
arch/powerpc/kernel/vmlinux.lds.S |4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
Index: linux-2.6-lttng/arch/powerpc/kernel/vmlinux.lds.S
://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
--
Subject: powerpc: add missing DATA_DATA
From: Mathieu Desnoyers [EMAIL PROTECTED]
Signed-off-by: Mathieu Desnoyers [EMAIL PROTECTED]
Cc: [EMAIL
in this file
* so leave page_cache_release and release_pages undeclared... */
#define free_page_and_swap_cache(page) \
page_cache_release(page)
#define free_pages_and_swap_cache(pages, nr) \
release_pages((pages), (nr), 0);
Signed-off-by: Mathieu Desnoyers [EMAIL PROTECTED]
CC
* Martin Schwidefsky ([EMAIL PROTECTED]) wrote:
On Fri, 2007-08-10 at 22:58 -0400, Mathieu Desnoyers wrote:
I got the following errors when building 2.6.23-rc2-mm2 on both mips and
arm. Both errors are very much alike.
That attached patch should fix it for arm and mips. I'll try a few more
Make sure that at least cmpxchg64_local is available on all architectures to use
for unsigned long long values.
Signed-off-by: Mathieu Desnoyers [EMAIL PROTECTED]
CC: [EMAIL PROTECTED]
CC: linuxppc-dev@ozlabs.org
---
include/asm-powerpc/system.h |6 ++
1 file changed, 6 insertions
* Paul Mackerras ([EMAIL PROTECTED]) wrote:
Mathieu Desnoyers writes:
Make sure that at least cmpxchg64_local is available on all architectures
to use
for unsigned long long values.
Signed-off-by: Mathieu Desnoyers [EMAIL PROTECTED]
Acked-by: Paul Mackerras [EMAIL PROTECTED
Make sure that at least cmpxchg64_local is available on all architectures to use
for unsigned long long values.
Signed-off-by: Mathieu Desnoyers [EMAIL PROTECTED]
Acked-by: Paul Mackerras [EMAIL PROTECTED]
CC: linuxppc-dev@ozlabs.org
---
include/asm-powerpc/system.h |6 ++
1 file changed
Make sure that at least cmpxchg64_local is available on all architectures to use
for unsigned long long values.
Signed-off-by: Mathieu Desnoyers [EMAIL PROTECTED]
Acked-by: Paul Mackerras [EMAIL PROTECTED]
CC: linuxppc-dev@ozlabs.org
---
include/asm-powerpc/system.h | 18 --
1
Instruction dump:
7c0802a6 bf61000c 3f60c038 7c3f0b78 90010024 7c7c1b78 7c9d2378 83db32a0
73c1 7f83e378 7fa4eb78 4082002f 2f83 409e0030 801b32a0
---[ end trace 1eb8fd7adac2bb65 ]---
Liberty
--
Mathieu Desnoyers
OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F BA06 3F25 A8FE 3BAE
the __ variants or the access_ok() checks will bite
you bad.
Ah, good point ;-)
-- Steve
--
Mathieu Desnoyers
OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F BA06 3F25 A8FE 3BAE 9A68
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* Steven Rostedt ([EMAIL PROTECTED]) wrote:
On Mon, 18 Aug 2008, Mathieu Desnoyers wrote:
* Steven Rostedt ([EMAIL PROTECTED]) wrote:
On Tue, 19 Aug 2008, Benjamin Herrenschmidt wrote:
Hmm, this was originally copied from x86, where we did a cmpxchg
* Eran Liberty ([EMAIL PROTECTED]) wrote:
Mathieu Desnoyers wrote:
Can you check if, at some point during the system execution (starting
from boot), 0xdd5b1d58 is an address where a module is loaded ? (the
module can be later unloaded, what I wonder is if this address would
appear to have had
Liberty
--
Mathieu Desnoyers
OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F BA06 3F25 A8FE 3BAE 9A68
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* Eran Liberty ([EMAIL PROTECTED]) wrote:
Mathieu Desnoyers wrote:
Can you also give us
objdump -S --start-address=0xC00BB724 vmlinux | head 20
?
Then we could compare the result with the OOPS instruction dump :
7c0802a6 bf61000c 3f60c038 7c3f0b78 90010024 7c7c1b78 7c9d2378 83db32a0
* Steven Rostedt ([EMAIL PROTECTED]) wrote:
On Mon, 18 Aug 2008, Mathieu Desnoyers wrote:
* Steven Rostedt ([EMAIL PROTECTED]) wrote:
On Tue, 19 Aug 2008, Benjamin Herrenschmidt wrote:
Hmm, this was originally copied from x86, where we did a cmpxchg
We need a marker_synchronize_unregister() before the end of exit() to make sure
every probe callers have exited the non preemptible section and thus are not
executing the probe code anymore.
Signed-off-by: Mathieu Desnoyers [EMAIL PROTECTED]
CC: Ingo Molnar [EMAIL PROTECTED]
CC: Jeremy Kerr
We need a marker_synchronize_unregister() before the end of exit() to make sure
every probe callers have exited the non preemptible section and thus are not
executing the probe code anymore.
Signed-off-by: Mathieu Desnoyers [EMAIL PROTECTED]
CC: Ingo Molnar [EMAIL PROTECTED]
CC: Jeremy Kerr
enabled
+ by this option.
+
config KPROBES
--
Mathieu Desnoyers
Computer Engineering Ph.D. Student, Ecole Polytechnique de Montreal
OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F BA06 3F25 A8FE 3BAE 9A68
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Linuxppc
and OPROFILE are enabled.
Signed-off-by: Mathieu Desnoyers [EMAIL PROTECTED]
CC: Adrian Bunk [EMAIL PROTECTED]
CC: Randy Dunlap [EMAIL PROTECTED]
CC: [EMAIL PROTECTED]
CC: [EMAIL PROTECTED]
CC: linuxppc-dev@ozlabs.org
CC: [EMAIL PROTECTED]
---
arch/powerpc/Kconfig |4
1 file changed, 4 insertions
* Arnd Bergmann ([EMAIL PROTECTED]) wrote:
On Saturday 29 December 2007, Mathieu Desnoyers wrote:
This patch restores the Cell OProfile support that was killed by
commit 09cadedbdc01f1a4bea1f427d4fb4642eaa19da9.
It puts it in arch/powerpc/Kconfig. Since I don't see any good reason
with A */
ubuf-tail = tail;
}
--
Mathieu Desnoyers
EfficiOS Inc.
http://www.efficios.com
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Allow it to be used from SPU, since it should not have unwanted
side-effects.
[ Untested on this architecture. To try it out: fetch linux-next/akpm,
apply this patch, build/run a membarrier-enabled kernel, and do make
kselftest. ]
Signed-off-by: Mathieu Desnoyers mathieu.desnoy
- On Aug 31, 2015, at 2:54 AM, Michael Ellerman m...@ellerman.id.au wrote:
> On Thu, 2015-08-27 at 13:56 -0400, Mathieu Desnoyers wrote:
>> Allow it to be used from SPU, since it should not have unwanted
>> side-effects.
>>
>> [ Untested on this architecture. To t
Allow it to be used from SPU, since it should not have unwanted
side-effects.
[ Picked-by: Michael Ellerman <m...@ellerman.id.au> ]
Signed-off-by: Mathieu Desnoyers <mathieu.desnoy...@efficios.com>
CC: Andrew Morton <a...@linux-foundation.org>
CC: linux-...@vger.kerne
- On Oct 6, 2017, at 5:08 PM, Paul E. McKenney paul...@linux.vnet.ibm.com
wrote:
> On Thu, Oct 05, 2017 at 06:33:26PM -0400, Mathieu Desnoyers wrote:
>> Architectures without membarrier hooks don't need to emit the
>> empty membarrier_arch_switch_mm() static inline when
>&
- On Oct 5, 2017, at 6:02 PM, Andrea Parri parri.and...@gmail.com wrote:
> On Thu, Oct 05, 2017 at 04:02:06PM +0000, Mathieu Desnoyers wrote:
>> - On Oct 5, 2017, at 8:12 AM, Peter Zijlstra pet...@infradead.org wrote:
>>
>> > On Wed, Oct 04, 2017 at 02:37:53PM
to succeed. membarrier_arch_switch_mm()
now tests for the MEMBARRIER_STATE_SWITCH_MM flag.
Changes since v1:
- Remove membarrier thread flag on powerpc (now unused).
Reported-by: Peter Zijlstra <pet...@infradead.org>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoy...@efficios.com>
CC:
- On Oct 5, 2017, at 5:40 PM, Mathieu Desnoyers
mathieu.desnoy...@efficios.com wrote:
> Threads targeting the same VM but which belong to different thread
> groups is a tricky case. It has a few consequences:
>
> It turns out that we cannot rely on get_nr_threads(p) to count
Piggin <npig...@gmail.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoy...@efficios.com>
CC: Peter Zijlstra <pet...@infradead.org>
CC: Paul E. McKenney <paul...@linux.vnet.ibm.com>
CC: Boqun Feng <boqun.f...@gmail.com>
CC: Andrew Hunter <a...@google.com>
CC: Ma
- On Oct 5, 2017, at 8:22 AM, Avi Kivity a...@scylladb.com wrote:
> On 10/05/2017 07:23 AM, Nicholas Piggin wrote:
>> On Wed, 4 Oct 2017 14:37:53 -0700
>> "Paul E. McKenney" <paul...@linux.vnet.ibm.com> wrote:
>>
>>> From: Mathieu Desnoyers &l
right?
Yes. The flag is read by membarrier_arch_switch_mm(), invoked
within switch_mm_irqs_off(), called by context_switch() before
finish_task_switch() releases the rq lock.
Is the comment clear enough, or do you have suggestions for
improvements ?
Thanks,
Mathieu
>
> > +}
--
Mathieu Desnoyers
EfficiOS Inc.
http://www.efficios.com
- On Oct 5, 2017, at 12:23 AM, Nicholas Piggin npig...@gmail.com wrote:
> On Wed, 4 Oct 2017 14:37:53 -0700
> "Paul E. McKenney" <paul...@linux.vnet.ibm.com> wrote:
>
>> From: Mathieu Desnoyers <mathieu.desnoy...@efficios.com>
>>
>> Pro
pin_unlock(>sighand->siglock);
>> > + /*
>> > + * Ensure all future scheduler executions will observe the new
>> > + * thread flag state for this process.
>> > + */
>> > + synchronize_sched();
>>
>> This relies on the flag being read inside rq->lock, right?
>>
> > > +}
--
Mathieu Desnoyers
EfficiOS Inc.
http://www.efficios.com
- On Sep 26, 2017, at 1:51 PM, Mathieu Desnoyers
mathieu.desnoy...@efficios.com wrote:
> Provide a new command allowing processes to register their intent to use
> the private expedited command.
>
I missed a few maintainers that should have been CC'd. Adding them now.
This patch
- On Sep 28, 2017, at 11:01 AM, Nicholas Piggin npig...@gmail.com wrote:
> On Thu, 28 Sep 2017 13:31:36 + (UTC)
> Mathieu Desnoyers <mathieu.desnoy...@efficios.com> wrote:
>
>> - On Sep 27, 2017, at 9:04 AM, Nicholas Piggin npig...@gmail.com wrote:
>>
>
- On Sep 28, 2017, at 12:16 PM, Nicholas Piggin npig...@gmail.com wrote:
> On Thu, 28 Sep 2017 15:29:50 + (UTC)
> Mathieu Desnoyers <mathieu.desnoy...@efficios.com> wrote:
>
>> - On Sep 28, 2017, at 11:01 AM, Nicholas Piggin npig...@gmail.com wrote:
>>
>
is aimed at Paul's tree. It applies on top of
"membarrier: Provide register expedited private command (v4)" and
"membarrier: Document scheduler barrier requirements (v4)". ]
Signed-off-by: Mathieu Desnoyers <mathieu.desnoy...@efficios.com>
CC: Peter Zijlstra <pet
ess in
membarrier_private_expedited. Matches WRITE_ONCE() performed in
process registration.
Changes since v4:
- Move powerpc hook from sched_in() to switch_mm(), based on feedback
from Nicholas Piggin.
Signed-off-by: Mathieu Desnoyers <mathieu.desnoy...@efficios.com>
CC: Peter Zijl
- On Sep 27, 2017, at 9:04 AM, Nicholas Piggin npig...@gmail.com wrote:
> On Tue, 26 Sep 2017 20:43:28 + (UTC)
> Mathieu Desnoyers <mathieu.desnoy...@efficios.com> wrote:
>
>> - On Sep 26, 2017, at 1:51 PM, Mathieu Desnoyers
>> mathieu.desnoy...@efficios.
Piggin <npig...@gmail.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoy...@efficios.com>
CC: Peter Zijlstra <pet...@infradead.org>
CC: Paul E. McKenney <paul...@linux.vnet.ibm.com>
CC: Boqun Feng <boqun.f...@gmail.com>
CC: Andrew Hunter <a...@google.com>
CC: Ma
to succeed. membarrier_arch_switch_mm()
now tests for the MEMBARRIER_STATE_SWITCH_MM flag.
Reported-by: Peter Zijlstra <pet...@infradead.org>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoy...@efficios.com>
CC: Paul E. McKenney <paul...@linux.vnet.ibm.com>
CC: Boqun Feng <
- On Oct 5, 2017, at 12:21 PM, Peter Zijlstra pet...@infradead.org wrote:
> On Thu, Oct 05, 2017 at 04:02:06PM +0000, Mathieu Desnoyers wrote:
>> - On Oct 5, 2017, at 8:12 AM, Peter Zijlstra pet...@infradead.org wrote:
>>
>> > On Wed, Oct 04, 2017 at 02:37:53PM
Signed-off-by: Mathieu Desnoyers <mathieu.desnoy...@efficios.com>
CC: Benjamin Herrenschmidt <b...@kernel.crashing.org>
CC: Paul Mackerras <pau...@samba.org>
CC: Michael Ellerman <m...@ellerman.id.au>
CC: Boqun Feng <boqun.f...@gmail.com>
CC: Peter Zijlstra <
ection.
Signed-off-by: Boqun Feng <boqun.f...@gmail.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoy...@efficios.com>
CC: Benjamin Herrenschmidt <b...@kernel.crashing.org>
CC: Paul Mackerras <pau...@samba.org>
CC: Michael Ellerman <m...@ellerman.id.au>
CC: Peter Zijlstr
u
data compared to using load-reservation/store-conditional atomics.
Signed-off-by: Boqun Feng <boqun.f...@gmail.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoy...@efficios.com>
CC: Benjamin Herrenschmidt <b...@kernel.crashing.org>
CC: Paul Mackerras <pau...@samba.o
Signed-off-by: Mathieu Desnoyers <mathieu.desnoy...@efficios.com>
CC: Benjamin Herrenschmidt <b...@kernel.crashing.org>
CC: Paul Mackerras <pau...@samba.org>
CC: Michael Ellerman <m...@ellerman.id.au>
CC: Boqun Feng <boqun.f...@gmail.com>
CC: Peter Zijlstra <
u
data compared to using load-reservation/store-conditional atomics.
Signed-off-by: Boqun Feng <boqun.f...@gmail.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoy...@efficios.com>
CC: Benjamin Herrenschmidt <b...@kernel.crashing.org>
CC: Paul Mackerras <pau...@samba.o
ection.
Signed-off-by: Boqun Feng <boqun.f...@gmail.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoy...@efficios.com>
CC: Benjamin Herrenschmidt <b...@kernel.crashing.org>
CC: Paul Mackerras <pau...@samba.org>
CC: Michael Ellerman <m...@ellerman.id.au>
CC: Peter Zijlstr
E_EXPEDITED.
Signed-off-by: Mathieu Desnoyers <mathieu.desnoy...@efficios.com>
CC: Peter Zijlstra <pet...@infradead.org>
CC: Paul E. McKenney <paul...@linux.vnet.ibm.com>
CC: Boqun Feng <boqun.f...@gmail.com>
CC: Andrew Hunter <a...@google.com>
CC: Maged Michael <maged
u
data compared to using load-reservation/store-conditional atomics.
Signed-off-by: Boqun Feng <boqun.f...@gmail.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoy...@efficios.com>
CC: Benjamin Herrenschmidt <b...@kernel.crashing.org>
CC: Paul Mackerras <pau...@samba.o
ection.
Signed-off-by: Boqun Feng <boqun.f...@gmail.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoy...@efficios.com>
CC: Benjamin Herrenschmidt <b...@kernel.crashing.org>
CC: Paul Mackerras <pau...@samba.org>
CC: Michael Ellerman <m...@ellerman.id.au>
CC: Peter Zijlstr
Signed-off-by: Mathieu Desnoyers <mathieu.desnoy...@efficios.com>
CC: Benjamin Herrenschmidt <b...@kernel.crashing.org>
CC: Paul Mackerras <pau...@samba.org>
CC: Michael Ellerman <m...@ellerman.id.au>
CC: Boqun Feng <boqun.f...@gmail.com>
CC: Peter Zijlstra <
E_EXPEDITED.
Signed-off-by: Mathieu Desnoyers <mathieu.desnoy...@efficios.com>
CC: Peter Zijlstra <pet...@infradead.org>
CC: Paul E. McKenney <paul...@linux.vnet.ibm.com>
CC: Boqun Feng <boqun.f...@gmail.com>
CC: Andrew Hunter <a...@google.com>
CC: Maged Michael <maged
E_EXPEDITED.
Signed-off-by: Mathieu Desnoyers <mathieu.desnoy...@efficios.com>
CC: Peter Zijlstra <pet...@infradead.org>
CC: Paul E. McKenney <paul...@linux.vnet.ibm.com>
CC: Boqun Feng <boqun.f...@gmail.com>
CC: Andrew Hunter <a...@google.com>
CC: Maged Michael <maged
u
data compared to using load-reservation/store-conditional atomics.
Signed-off-by: Boqun Feng <boqun.f...@gmail.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoy...@efficios.com>
CC: Benjamin Herrenschmidt <b...@kernel.crashing.org>
CC: Paul Mackerras <pau...@samba.o
ection.
Signed-off-by: Boqun Feng <boqun.f...@gmail.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoy...@efficios.com>
CC: Benjamin Herrenschmidt <b...@kernel.crashing.org>
CC: Paul Mackerras <pau...@samba.org>
CC: Michael Ellerman <m...@ellerman.id.au>
CC: Peter Zijlstr
Signed-off-by: Mathieu Desnoyers <mathieu.desnoy...@efficios.com>
CC: Benjamin Herrenschmidt <b...@kernel.crashing.org>
CC: Paul Mackerras <pau...@samba.org>
CC: Michael Ellerman <m...@ellerman.id.au>
CC: Boqun Feng <boqun.f...@gmail.com>
CC: Peter Zijlstra <
u
data compared to using load-reservation/store-conditional atomics.
Signed-off-by: Boqun Feng <boqun.f...@gmail.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoy...@efficios.com>
CC: Benjamin Herrenschmidt <b...@kernel.crashing.org>
CC: Paul Mackerras <pau...@samba.o
ection.
Signed-off-by: Boqun Feng <boqun.f...@gmail.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoy...@efficios.com>
CC: Benjamin Herrenschmidt <b...@kernel.crashing.org>
CC: Paul Mackerras <pau...@samba.org>
CC: Michael Ellerman <m...@ellerman.id.au>
CC: Peter Zijlstr
Signed-off-by: Mathieu Desnoyers <mathieu.desnoy...@efficios.com>
CC: Benjamin Herrenschmidt <b...@kernel.crashing.org>
CC: Paul Mackerras <pau...@samba.org>
CC: Michael Ellerman <m...@ellerman.id.au>
CC: Boqun Feng <boqun.f...@gmail.com>
CC: Peter Zijlstra <
) to switch_mm(), based on feedback
from Nicholas Piggin.
Changes since v5:
- Rebase on v4.14-rc6.
- Fold "Fix: membarrier: Handle CLONE_VM + !CLONE_THREAD correctly on
powerpc (v2)"
Signed-off-by: Mathieu Desnoyers <mathieu.desnoy...@efficios.com>
CC: Peter Zijlstra <pet...@in
- On May 16, 2018, at 9:19 PM, Boqun Feng boqun.f...@gmail.com wrote:
> On Wed, May 16, 2018 at 04:13:16PM -0400, Mathieu Desnoyers wrote:
>> - On May 16, 2018, at 12:18 PM, Peter Zijlstra pet...@infradead.org
>> wrote:
>>
>> > On Mon, Apr 30, 2018 at 06:44
- On May 23, 2018, at 4:14 PM, Mathieu Desnoyers
mathieu.desnoy...@efficios.com wrote:
> - On May 20, 2018, at 10:08 AM, Boqun Feng boqun.f...@gmail.com wrote:
>
>> On Fri, May 18, 2018 at 02:17:17PM -0400, Mathieu Desnoyers wrote:
>>> - On May 17, 2018, a
- On May 20, 2018, at 10:08 AM, Boqun Feng boqun.f...@gmail.com wrote:
> On Fri, May 18, 2018 at 02:17:17PM -0400, Mathieu Desnoyers wrote:
>> - On May 17, 2018, at 7:50 PM, Boqun Feng boqun.f...@gmail.com wrote:
>> [...]
>> >> > I think you're right. So
YSCALL_DOTRACE|_TIF_SINGLESTEP|_TIF_USER_WORK_MASK|_TIF_PERSYSCALL_MASK)
>> >
By the way, I think this is not the right spot to call rseq_syscall, because
interrupts are disabled. I think we should move this hunk right after
system_call_exit.
Would you like to implement and test an updated patch adding those calls for
ppc 32 and 64 ?
Thanks,
Mathieu
--
Mathieu Desnoyers
EfficiOS Inc.
http://www.efficios.com
- On May 16, 2018, at 12:18 PM, Peter Zijlstra pet...@infradead.org wrote:
> On Mon, Apr 30, 2018 at 06:44:26PM -0400, Mathieu Desnoyers wrote:
>> diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
>> index c32a181a7cbb..ed21a777e8c6 100644
>> --- a/arch/powerpc/
From: Boqun Feng
Call the rseq_handle_notify_resume() function on return to userspace if
TIF_NOTIFY_RESUME thread flag is set.
Perform fixup on the pre-signal when a signal is delivered on top of a
restartable sequence critical section.
Signed-off-by: Boqun Feng
Signed-off-by: Mathieu
-bit powerpc kernel by Mathieu Desnoyers. Still needs to
be tested on 32-bit powerpc kernel. ]
Signed-off-by: Boqun Feng
Signed-off-by: Mathieu Desnoyers
CC: Benjamin Herrenschmidt
CC: Paul Mackerras
CC: Michael Ellerman
CC: Peter Zijlstra
CC: "Paul E. McKenney"
CC: li
-reservation/store-conditional atomics.
Signed-off-by: Boqun Feng
Signed-off-by: Mathieu Desnoyers
CC: Benjamin Herrenschmidt
CC: Paul Mackerras
CC: Michael Ellerman
CC: Peter Zijlstra
CC: "Paul E. McKenney"
CC: linuxppc-dev@lists.ozlabs.org
---
arch/powerpc/include/asm/systbl.h |
- On Jun 5, 2018, at 1:21 AM, Michael Ellerman m...@ellerman.id.au wrote:
> Mathieu Desnoyers writes:
>> From: Boqun Feng
>>
>> Syscalls are not allowed inside restartable sequences, so add a call to
>> rseq_syscall() at the very beginning
- On Jun 5, 2018, at 1:18 AM, Michael Ellerman m...@ellerman.id.au wrote:
> Mathieu Desnoyers writes:
>
>> From: Boqun Feng
>>
>> Wire up the rseq system call on powerpc.
>>
>> This provides an ABI improving the speed of a user-space getcpu
>> o
- On May 24, 2018, at 3:03 AM, Michael Ellerman m...@ellerman.id.au wrote:
> Mathieu Desnoyers <mathieu.desnoy...@efficios.com> writes:
>> - On May 23, 2018, at 4:14 PM, Mathieu Desnoyers
>> mathieu.desnoy...@efficios.com wrote:
> ...
>>>
>>
u
data compared to using load-reservation/store-conditional atomics.
TODO: wire up rseq_syscall() on return from system call. It is used with
CONFIG_DEBUG_RSEQ=y to ensure system calls are not issued within rseq critical
section
Signed-off-by: Boqun Feng <boqun.f...@gmail.com>
Signed-off-by: Mathi
t;boqun.f...@gmail.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoy...@efficios.com>
CC: Benjamin Herrenschmidt <b...@kernel.crashing.org>
CC: Paul Mackerras <pau...@samba.org>
CC: Michael Ellerman <m...@ellerman.id.au>
CC: Peter Zijlstra <pet...@infr
E_EXPEDITED.
Signed-off-by: Mathieu Desnoyers <mathieu.desnoy...@efficios.com>
CC: Peter Zijlstra <pet...@infradead.org>
CC: Paul E. McKenney <paul...@linux.vnet.ibm.com>
CC: Boqun Feng <boqun.f...@gmail.com>
CC: Andrew Hunter <a...@google.com>
CC: Maged Michael <maged
Signed-off-by: Mathieu Desnoyers <mathieu.desnoy...@efficios.com>
CC: Peter Zijlstra <pet...@infradead.org>
CC: Paul E. McKenney <paul...@linux.vnet.ibm.com>
CC: Boqun Feng <boqun.f...@gmail.com>
CC: Andrew Hunter <a...@google.com>
CC: Maged Michael <maged.mich...@gmai
E_EXPEDITED.
Signed-off-by: Mathieu Desnoyers <mathieu.desnoy...@efficios.com>
CC: Peter Zijlstra <pet...@infradead.org>
CC: Paul E. McKenney <paul...@linux.vnet.ibm.com>
CC: Boqun Feng <boqun.f...@gmail.com>
CC: Andrew Hunter <a...@google.com>
CC: Maged Michael <maged
Signed-off-by: Mathieu Desnoyers <mathieu.desnoy...@efficios.com>
Acked-by: Peter Zijlstra (Intel) <pet...@infradead.org>
CC: Paul E. McKenney <paul...@linux.vnet.ibm.com>
CC: Boqun Feng <boqun.f...@gmail.com>
CC: Andrew Hunter <a...@google.com>
CC: Maged Michael
- On Feb 5, 2018, at 3:22 PM, Ingo Molnar mi...@kernel.org wrote:
> * Mathieu Desnoyers <mathieu.desnoy...@efficios.com> wrote:
>
>>
>> +config ARCH_HAS_MEMBARRIER_HOOKS
>> +bool
>
> Yeah, so I have renamed this to ARCH_HAS_MEMBARRIER_CALLBACKS, and
E_EXPEDITED.
Signed-off-by: Mathieu Desnoyers <mathieu.desnoy...@efficios.com>
CC: Peter Zijlstra <pet...@infradead.org>
CC: Paul E. McKenney <paul...@linux.vnet.ibm.com>
CC: Boqun Feng <boqun.f...@gmail.com>
CC: Andrew Hunter <a...@google.com>
CC: Maged Michael <maged
Signed-off-by: Mathieu Desnoyers <mathieu.desnoy...@efficios.com>
CC: Peter Zijlstra <pet...@infradead.org>
CC: Paul E. McKenney <paul...@linux.vnet.ibm.com>
CC: Boqun Feng <boqun.f...@gmail.com>
CC: Andrew Hunter <a...@google.com>
CC: Maged Michael <maged.mich...@gmai
t;boqun.f...@gmail.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoy...@efficios.com>
CC: Benjamin Herrenschmidt <b...@kernel.crashing.org>
CC: Paul Mackerras <pau...@samba.org>
CC: Michael Ellerman <m...@ellerman.id.au>
CC: Peter Zijlstra <pet...@infr
u
data compared to using load-reservation/store-conditional atomics.
TODO: wire up rseq_syscall() on return from system call. It is used with
CONFIG_DEBUG_RSEQ=y to ensure system calls are not issued within rseq critical
section
Signed-off-by: Boqun Feng <boqun.f...@gmail.com>
Signed-off-by: Mathi
Signed-off-by: Mathieu Desnoyers <mathieu.desnoy...@efficios.com>
CC: Benjamin Herrenschmidt <b...@kernel.crashing.org>
CC: Paul Mackerras <pau...@samba.org>
CC: Michael Ellerman <m...@ellerman.id.au>
CC: Boqun Feng <boqun.f...@gmail.com>
CC: Peter Zijlstra <
u
data compared to using load-reservation/store-conditional atomics.
Signed-off-by: Boqun Feng <boqun.f...@gmail.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoy...@efficios.com>
CC: Benjamin Herrenschmidt <b...@kernel.crashing.org>
CC: Paul Mackerras <pau...@samba.o
Signed-off-by: Mathieu Desnoyers <mathieu.desnoy...@efficios.com>
CC: Benjamin Herrenschmidt <b...@kernel.crashing.org>
CC: Paul Mackerras <pau...@samba.org>
CC: Michael Ellerman <m...@ellerman.id.au>
CC: Boqun Feng <boqun.f...@gmail.com>
CC: Peter Zijlstra <
ection.
Signed-off-by: Boqun Feng <boqun.f...@gmail.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoy...@efficios.com>
CC: Benjamin Herrenschmidt <b...@kernel.crashing.org>
CC: Paul Mackerras <pau...@samba.org>
CC: Michael Ellerman <m...@ellerman.id.au>
CC: Peter Zijlstr
Signed-off-by: Mathieu Desnoyers
CC: Benjamin Herrenschmidt
CC: Paul Mackerras
CC: Michael Ellerman
CC: Boqun Feng
CC: Peter Zijlstra
CC: "Paul E. McKenney"
CC: linuxppc-dev@lists.ozlabs.org
---
arch/powerpc/include/asm/systbl.h | 1 +
arch/powerpc/include/uapi/asm/unistd.
Signed-off-by: Mathieu Desnoyers
CC: Benjamin Herrenschmidt
CC: Paul Mackerras
CC: Michael Ellerman
CC: Boqun Feng
CC: Peter Zijlstra
CC: "Paul E. McKenney"
CC: linuxppc-dev@lists.ozlabs.org
---
arch/powerpc/include/asm/systbl.h | 1 +
arch/powerpc/include/uapi/asm/unistd.
Use "twui" as the guard instruction for the restartable sequence abort
handler.
Signed-off-by: Mathieu Desnoyers
CC: Benjamin Herrenschmidt
CC: Paul Mackerras
CC: Michael Ellerman
CC: Boqun Feng
CC: Peter Zijlstra
CC: "Paul E. McKenney"
CC: Alan Modra
CC: linuxppc-
Use "twui" as the guard instruction for the restartable sequence abort
handler.
Signed-off-by: Mathieu Desnoyers
CC: Benjamin Herrenschmidt
CC: Paul Mackerras
CC: Michael Ellerman
CC: Boqun Feng
CC: Peter Zijlstra
CC: "Paul E. McKenney"
CC: Alan Modra
CC: linuxppc-
- On Jul 8, 2020, at 8:18 PM, Segher Boessenkool seg...@kernel.crashing.org
wrote:
> On Wed, Jul 08, 2020 at 08:01:23PM -0400, Mathieu Desnoyers wrote:
>> > > #define RSEQ_ASM_OP_CMPEQ(var, expect, label)
>> > > \
>> > > LOAD_
- On Jul 8, 2020, at 8:10 PM, Segher Boessenkool seg...@kernel.crashing.org
wrote:
> Hi!
>
> On Wed, Jul 08, 2020 at 10:00:01AM -0400, Mathieu Desnoyers wrote:
[...]
>
>> -#define STORE_WORD "std "
>> -#define LOAD_WORD "ld "
&
- On Jul 8, 2020, at 8:33 AM, Mathieu Desnoyers
mathieu.desnoy...@efficios.com wrote:
> - On Jul 7, 2020, at 8:59 PM, Segher Boessenkool
> seg...@kernel.crashing.org
> wrote:
[...]
>>
>> So perhaps you have code like
>>
>> int *p;
>> int x
- On Jul 7, 2020, at 8:59 PM, Segher Boessenkool seg...@kernel.crashing.org
wrote:
> Hi!
>
> On Tue, Jul 07, 2020 at 03:17:10PM -0400, Mathieu Desnoyers wrote:
>> I'm trying to build librseq at:
>>
>> https://git.kernel.org/pub/scm/libs/librseq/librseq.git
&
+ context synchronistaion by the time it has done" is not strictly
correct: the context synchronizing instruction does not strictly need to
happen on each core before membarrier returns. A similar line of thoughts
can be followed for memory barriers.
Thanks,
Mathieu
--
Mathieu Desnoyers
EfficiOS Inc.
http://www.efficios.com
uot; (*((unsigned char *)ptep+4))
: "r" (pte) : "memory");
where I would have expected:
stw%U1%X1 %L2,%1"
Is it a bug or am I missing something ?
Thanks,
Mathieu
--
Mathieu Desnoyers
EfficiOS Inc.
http://www.efficios.com
- On Jul 8, 2020, at 10:21 AM, Christophe Leroy christophe.le...@csgroup.eu
wrote:
> Le 08/07/2020 à 16:00, Mathieu Desnoyers a écrit :
>> - On Jul 8, 2020, at 8:33 AM, Mathieu Desnoyers
>> mathieu.desnoy...@efficios.com wrote:
>>
>>> - On Jul 7, 2020,
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