From: Peter Zijlstra <peterz@infradead.org>
To: Michal Hocko <mhocko@kernel.org>
Cc: Ingo Molnar <mingo@kernel.org>,
LKML <linux-kernel@vger.kernel.org>,
Ingo Molnar <mingo@redhat.com>,
Thomas Gleixner <tglx@linutronix.de>,
"H. Peter Anvin" <hpa@zytor.com>,
"David S. Miller" <davem@davemloft.net>,
Tony Luck <tony.luck@intel.com>,
Andrew Morton <akpm@linux-foundation.org>,
Chris Zankel <chris@zankel.net>,
Max Filippov <jcmvbkbc@gmail.com>,
x86@kernel.org, linux-alpha@vger.kernel.org,
linux-ia64@vger.kernel.org, linux-s390@vger.kernel.org,
linux-sh@vger.kernel.org, sparclinux@vger.kernel.org,
linux-xtensa@linux-xtensa.org, linux-arch@vger.kernel.org,
Josh Poimboeuf <jpoimboe@redhat.com>
Subject: Re: [PATCH 10/11] x86, rwsem: provide __down_write_killable
Date: Wed, 20 Apr 2016 13:40:19 +0000 [thread overview]
Message-ID: <20160420134019.GX3448@twins.programming.kicks-ass.net> (raw)
In-Reply-To: <20160413124943.GH14351@dhcp22.suse.cz>
On Wed, Apr 13, 2016 at 02:49:43PM +0200, Michal Hocko wrote:
> On Wed 13-04-16 12:27:31, Ingo Molnar wrote:
> >
> > * Ingo Molnar <mingo@kernel.org> wrote:
> >
> > > I'm testing your patches today, if they are otherwise OK [...]
> >
> > got this build failure:
> >
> > ./arch/x86/include/asm/rwsem.h:106:2: error: ‘asm’ operand has impossible constraints
>
> Hmm, I have no idea why 64b didn't have problem with the asm but 32b
> complains. Anyway, the following makes both happy. I have checked the
> generated code for 64b and it hasn't changed after the patch. 32b also
> seems to be generating a proper code. My gcc asm()-foo is rather weak so
> I would feel better if somebody double checked after me.
I completely blow at this gcc-asm constraints thing too :/
In any case, Ingo will you look after the rest of these patches, or do
you want me to pick up the remaining bits?
WARNING: multiple messages have this Message-ID (diff)
From: Peter Zijlstra <peterz@infradead.org>
To: Michal Hocko <mhocko@kernel.org>
Cc: Ingo Molnar <mingo@kernel.org>,
LKML <linux-kernel@vger.kernel.org>,
Ingo Molnar <mingo@redhat.com>,
Thomas Gleixner <tglx@linutronix.de>,
"H. Peter Anvin" <hpa@zytor.com>,
"David S. Miller" <davem@davemloft.net>,
Tony Luck <tony.luck@intel.com>,
Andrew Morton <akpm@linux-foundation.org>,
Chris Zankel <chris@zankel.net>,
Max Filippov <jcmvbkbc@gmail.com>,
x86@kernel.org, linux-alpha@vger.kernel.org,
linux-ia64@vger.kernel.org, linux-s390@vger.kernel.org,
linux-sh@vger.kernel.org, sparclinux@vger.kernel.org,
linux-xtensa@linux-xtensa.org, linux-arch@vger.kernel.org,
Josh Poimboeuf <jpoimboe@redhat.com>
Subject: Re: [PATCH 10/11] x86, rwsem: provide __down_write_killable
Date: Wed, 20 Apr 2016 15:40:19 +0200 [thread overview]
Message-ID: <20160420134019.GX3448@twins.programming.kicks-ass.net> (raw)
In-Reply-To: <20160413124943.GH14351@dhcp22.suse.cz>
On Wed, Apr 13, 2016 at 02:49:43PM +0200, Michal Hocko wrote:
> On Wed 13-04-16 12:27:31, Ingo Molnar wrote:
> >
> > * Ingo Molnar <mingo@kernel.org> wrote:
> >
> > > I'm testing your patches today, if they are otherwise OK [...]
> >
> > got this build failure:
> >
> > ./arch/x86/include/asm/rwsem.h:106:2: error: ‘asm’ operand has impossible constraints
>
> Hmm, I have no idea why 64b didn't have problem with the asm but 32b
> complains. Anyway, the following makes both happy. I have checked the
> generated code for 64b and it hasn't changed after the patch. 32b also
> seems to be generating a proper code. My gcc asm()-foo is rather weak so
> I would feel better if somebody double checked after me.
I completely blow at this gcc-asm constraints thing too :/
In any case, Ingo will you look after the rest of these patches, or do
you want me to pick up the remaining bits?
WARNING: multiple messages have this Message-ID (diff)
From: Peter Zijlstra <peterz@infradead.org>
To: Michal Hocko <mhocko@kernel.org>
Cc: Ingo Molnar <mingo@kernel.org>,
LKML <linux-kernel@vger.kernel.org>,
Ingo Molnar <mingo@redhat.com>,
Thomas Gleixner <tglx@linutronix.de>,
"H. Peter Anvin" <hpa@zytor.com>,
"David S. Miller" <davem@davemloft.net>,
Tony Luck <tony.luck@intel.com>,
Andrew Morton <akpm@linux-foundation.org>,
Chris Zankel <chris@zankel.net>,
Max Filippov <jcmvbkbc@gmail.com>,
x86@kernel.org, linux-alpha@vger.kernel.org,
linux-ia64@vger.kernel.org, linux-s390@vger.kernel.org,
linux-sh@vger.kernel.org, sparclinux@vger.kernel.org,
linux-xtensa@linux-xtensa.org, linux-arch@vger.kernel.org,
Josh Poimboeuf <jpoimboe@redhat.com>
Subject: Re: [PATCH 10/11] x86, rwsem: provide __down_write_killable
Date: Wed, 20 Apr 2016 15:40:19 +0200 [thread overview]
Message-ID: <20160420134019.GX3448@twins.programming.kicks-ass.net> (raw)
In-Reply-To: <20160413124943.GH14351@dhcp22.suse.cz>
On Wed, Apr 13, 2016 at 02:49:43PM +0200, Michal Hocko wrote:
> On Wed 13-04-16 12:27:31, Ingo Molnar wrote:
> >
> > * Ingo Molnar <mingo@kernel.org> wrote:
> >
> > > I'm testing your patches today, if they are otherwise OK [...]
> >
> > got this build failure:
> >
> > ./arch/x86/include/asm/rwsem.h:106:2: error: ‘asm’ operand has impossible constraints
>
> Hmm, I have no idea why 64b didn't have problem with the asm but 32b
> complains. Anyway, the following makes both happy. I have checked the
> generated code for 64b and it hasn't changed after the patch. 32b also
> seems to be generating a proper code. My gcc asm()-foo is rather weak so
> I would feel better if somebody double checked after me.
I completely blow at this gcc-asm constraints thing too :/
In any case, Ingo will you look after the rest of these patches, or do
you want me to pick up the remaining bits?
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next prev parent reply other threads:[~2016-04-20 13:40 UTC|newest]
Thread overview: 226+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-29 12:58 [PATCH 0/11] introduce down_write_killable for rw_semaphore Michal Hocko
2016-02-29 12:58 ` Michal Hocko
2016-02-29 12:58 ` [PATCH 01/11] locking, rwsem: get rid of __down_write_nested Michal Hocko
2016-02-29 12:58 ` Michal Hocko
2016-02-29 12:58 ` [PATCH 02/11] locking, rwsem: drop explicit memory barriers Michal Hocko
2016-02-29 12:58 ` Michal Hocko
2016-02-29 12:58 ` [PATCH 03/11] locking, rwsem: introduce basis for down_write_killable Michal Hocko
2016-02-29 12:58 ` Michal Hocko
2016-03-30 13:25 ` Peter Zijlstra
2016-03-30 13:25 ` Peter Zijlstra
2016-03-31 8:33 ` Michal Hocko
2016-03-31 8:33 ` Michal Hocko
2016-03-31 8:44 ` Peter Zijlstra
2016-03-31 8:44 ` Peter Zijlstra
2016-03-31 8:55 ` [PATCH] " Michal Hocko
2016-03-31 8:55 ` Michal Hocko
2016-02-29 12:58 ` [PATCH 04/11] alpha, rwsem: provide __down_write_killable Michal Hocko
2016-02-29 12:58 ` Michal Hocko
2016-02-29 12:58 ` [PATCH 05/11] ia64, " Michal Hocko
2016-02-29 12:58 ` Michal Hocko
2016-02-29 12:58 ` [PATCH 06/11] s390, " Michal Hocko
2016-02-29 12:58 ` Michal Hocko
2016-02-29 12:58 ` [PATCH 07/11] sh, " Michal Hocko
2016-02-29 12:58 ` Michal Hocko
2016-02-29 12:58 ` [PATCH 08/11] sparc, " Michal Hocko
2016-02-29 12:58 ` Michal Hocko
2016-02-29 12:58 ` [PATCH 09/11] xtensa, " Michal Hocko
2016-02-29 12:58 ` Michal Hocko
2016-02-29 12:58 ` [PATCH 10/11] x86, " Michal Hocko
2016-02-29 12:58 ` Michal Hocko
2016-02-29 12:58 ` [PATCH 11/11] locking, rwsem: provide down_write_killable Michal Hocko
2016-02-29 12:58 ` Michal Hocko
2016-03-30 13:32 ` [PATCH 0/11] introduce down_write_killable for rw_semaphore Peter Zijlstra
2016-03-30 13:32 ` Peter Zijlstra
2016-03-31 8:59 ` Michal Hocko
2016-03-31 8:59 ` Michal Hocko
2016-03-31 9:20 ` Ingo Molnar
2016-03-31 9:20 ` Ingo Molnar
2016-03-31 10:58 ` Michal Hocko
2016-03-31 10:58 ` Michal Hocko
2016-03-31 17:03 ` Andrew Morton
2016-03-31 17:03 ` Andrew Morton
2016-04-01 6:33 ` Ingo Molnar
2016-04-01 6:33 ` Ingo Molnar
2016-04-01 9:21 ` Michal Hocko
2016-04-01 9:21 ` Michal Hocko
2016-04-01 9:50 ` Ingo Molnar
2016-04-01 9:50 ` Ingo Molnar
2016-04-01 10:52 ` Michal Hocko
2016-04-01 10:52 ` Michal Hocko
2016-04-01 7:26 ` Michal Hocko
2016-04-01 7:26 ` Michal Hocko
2016-04-01 9:11 ` Andrew Morton
2016-04-01 9:11 ` Andrew Morton
2016-04-01 11:04 ` [PATCH 0/11] introduce down_write_killable for rw_semaphore v2 Michal Hocko
2016-04-01 11:04 ` Michal Hocko
2016-04-01 11:04 ` [PATCH 01/11] locking, rwsem: get rid of __down_write_nested Michal Hocko
2016-04-01 11:04 ` Michal Hocko
2016-04-02 0:28 ` Davidlohr Bueso
2016-04-02 0:28 ` Davidlohr Bueso
2016-04-01 11:04 ` [PATCH 02/11] locking, rwsem: drop explicit memory barriers Michal Hocko
2016-04-01 11:04 ` Michal Hocko
2016-04-02 1:17 ` Davidlohr Bueso
2016-04-02 1:17 ` Davidlohr Bueso
2016-04-04 9:03 ` Michal Hocko
2016-04-04 9:03 ` Michal Hocko
2016-04-04 9:06 ` [PATCH 1/2] xtensa, rwsem: drop superfluous arch specific implementation Michal Hocko
2016-04-04 9:06 ` Michal Hocko
2016-04-04 9:06 ` [PATCH 2/2] sh, " Michal Hocko
2016-04-04 9:06 ` Michal Hocko
2016-04-06 9:26 ` Peter Zijlstra
2016-04-06 9:26 ` Peter Zijlstra
2016-04-06 9:50 ` Geert Uytterhoeven
2016-04-06 9:50 ` Geert Uytterhoeven
2016-04-06 10:27 ` Peter Zijlstra
2016-04-06 10:27 ` Peter Zijlstra
2016-04-04 10:23 ` [PATCH 1/2] xtensa, " Max Filippov
2016-04-04 10:23 ` Max Filippov
2016-04-06 9:06 ` [PATCH] sparc, " Michal Hocko
2016-04-06 9:06 ` Michal Hocko
2016-04-06 9:06 ` Michal Hocko
2016-04-06 9:06 ` Michal Hocko
2016-04-01 11:04 ` [PATCH 03/11] locking, rwsem: introduce basis for down_write_killable Michal Hocko
2016-04-01 11:04 ` Michal Hocko
2016-04-02 4:41 ` Davidlohr Bueso
2016-04-02 4:41 ` Davidlohr Bueso
2016-04-04 9:17 ` Michal Hocko
2016-04-04 9:17 ` Michal Hocko
2016-04-04 9:21 ` Peter Zijlstra
2016-04-04 9:21 ` Peter Zijlstra
2016-04-07 6:58 ` Davidlohr Bueso
2016-04-07 6:58 ` Davidlohr Bueso
2016-04-07 7:38 ` Michal Hocko
2016-04-07 7:38 ` Michal Hocko
2016-05-10 10:43 ` Tetsuo Handa
2016-05-10 11:53 ` Michal Hocko
2016-05-10 12:38 ` Peter Zijlstra
2016-05-10 13:57 ` Tetsuo Handa
2016-05-11 7:23 ` Michal Hocko
2016-05-11 8:28 ` Michal Hocko
2016-05-11 8:44 ` Peter Zijlstra
2016-05-11 9:04 ` Michal Hocko
2016-05-11 9:17 ` Peter Zijlstra
2016-05-11 9:31 ` Michal Hocko
2016-05-11 9:41 ` Peter Zijlstra
2016-05-11 13:59 ` Michal Hocko
2016-05-11 18:03 ` Michal Hocko
2016-05-12 11:57 ` [PATCH] locking, rwsem: Fix down_write_killable() Peter Zijlstra
2016-05-12 12:15 ` [tip:locking/rwsem] locking/rwsem: " tip-bot for Peter Zijlstra
2016-05-12 16:59 ` [PATCH] locking, rwsem: " Michal Hocko
2016-05-15 20:57 ` [tip:locking/rwsem] locking/rwsem: " tip-bot for Peter Zijlstra
2016-05-12 12:12 ` [PATCH 03/11] locking, rwsem: introduce basis for down_write_killable Peter Zijlstra
2016-05-12 12:19 ` Michal Hocko
2016-05-12 13:58 ` Peter Zijlstra
2016-05-12 19:42 ` Waiman Long
2016-05-11 8:35 ` Peter Zijlstra
2016-05-11 9:02 ` Michal Hocko
2016-04-01 11:04 ` [PATCH 04/11] alpha, rwsem: provide __down_write_killable Michal Hocko
2016-04-01 11:04 ` Michal Hocko
2016-04-01 11:04 ` [PATCH 05/11] ia64, " Michal Hocko
2016-04-01 11:04 ` Michal Hocko
2016-04-01 11:04 ` [PATCH 06/11] s390, " Michal Hocko
2016-04-01 11:04 ` Michal Hocko
2016-04-01 11:04 ` [PATCH 07/11] sh, " Michal Hocko
2016-04-01 11:04 ` Michal Hocko
2016-04-01 11:04 ` [PATCH 08/11] sparc, " Michal Hocko
2016-04-01 11:04 ` Michal Hocko
2016-04-01 11:04 ` [PATCH 09/11] xtensa, " Michal Hocko
2016-04-01 11:04 ` Michal Hocko
2016-04-01 11:04 ` [PATCH 10/11] x86, " Michal Hocko
2016-04-01 11:04 ` Michal Hocko
2016-04-06 18:31 ` Peter Zijlstra
2016-04-06 18:31 ` Peter Zijlstra
2016-04-01 11:04 ` [PATCH 11/11] locking, rwsem: provide down_write_killable Michal Hocko
2016-04-01 11:04 ` Michal Hocko
2016-04-07 15:12 ` [PATCH 0/11] introduce down_write_killable for rw_semaphore v3 Michal Hocko
2016-04-07 15:12 ` Michal Hocko
2016-04-07 15:12 ` [PATCH 01/11] locking, rwsem: get rid of __down_write_nested Michal Hocko
2016-04-07 15:12 ` Michal Hocko
2016-04-13 11:32 ` [tip:locking/rwsem] locking/rwsem: Get rid of __down_write_nested() tip-bot for Michal Hocko
2016-04-07 15:12 ` [PATCH 02/11] locking, rwsem: drop explicit memory barriers Michal Hocko
2016-04-07 15:12 ` Michal Hocko
2016-04-13 11:32 ` [tip:locking/rwsem] locking/rwsem: Drop " tip-bot for Michal Hocko
2016-04-07 15:12 ` [PATCH 03/11] xtensa, rwsem: drop superfluous arch specific implementation Michal Hocko
2016-04-07 15:12 ` Michal Hocko
2016-04-13 11:33 ` [tip:locking/rwsem] locking/rwsem, xtensa: Drop " tip-bot for Michal Hocko
2016-04-07 15:12 ` [PATCH 04/11] sh, rwsem: drop " Michal Hocko
2016-04-07 15:12 ` Michal Hocko
2016-04-13 11:33 ` [tip:locking/rwsem] locking/rwsem, sh: Drop " tip-bot for Michal Hocko
2016-04-07 15:12 ` [PATCH 05/11] sparc, rwsem: drop " Michal Hocko
2016-04-07 15:12 ` Michal Hocko
2016-04-13 11:33 ` [tip:locking/rwsem] locking/rwsem, sparc: Drop " tip-bot for Michal Hocko
2016-04-07 15:12 ` [PATCH 06/11] locking, rwsem: introduce basis for down_write_killable Michal Hocko
2016-04-07 15:12 ` Michal Hocko
2016-04-13 11:34 ` [tip:locking/rwsem] locking/rwsem: Introduce basis for down_write_killable() tip-bot for Michal Hocko
2016-04-07 15:12 ` [PATCH 07/11] alpha, rwsem: provide __down_write_killable Michal Hocko
2016-04-07 15:12 ` Michal Hocko
2016-04-22 9:42 ` [tip:locking/rwsem] locking/rwsem, alpha: Provide __down_write_killable() tip-bot for Michal Hocko
2016-04-07 15:12 ` [PATCH 08/11] ia64, rwsem: provide __down_write_killable Michal Hocko
2016-04-07 15:12 ` Michal Hocko
2016-04-07 17:28 ` Sergei Shtylyov
2016-04-07 17:28 ` Sergei Shtylyov
2016-04-08 6:22 ` Michal Hocko
2016-04-08 6:22 ` Michal Hocko
2016-04-22 9:43 ` [tip:locking/rwsem] locking/rwsem, ia64: Provide __down_write_killable() tip-bot for Michal Hocko
2016-04-07 15:12 ` [PATCH 09/11] s390, rwsem: provide __down_write_killable Michal Hocko
2016-04-07 15:12 ` Michal Hocko
2016-04-22 9:43 ` [tip:locking/rwsem] locking/rwsem, s390: Provide __down_write_killable() tip-bot for Michal Hocko
2016-04-07 15:12 ` [PATCH 10/11] x86, rwsem: provide __down_write_killable Michal Hocko
2016-04-07 15:12 ` Michal Hocko
2016-04-13 9:08 ` Ingo Molnar
2016-04-13 9:08 ` Ingo Molnar
2016-04-13 9:16 ` Michal Hocko
2016-04-13 9:16 ` Michal Hocko
2016-04-13 9:19 ` Ingo Molnar
2016-04-13 9:19 ` Ingo Molnar
2016-04-13 10:27 ` Ingo Molnar
2016-04-13 10:27 ` Ingo Molnar
2016-04-13 12:49 ` Michal Hocko
2016-04-13 12:49 ` Michal Hocko
2016-04-13 12:49 ` Michal Hocko
2016-04-13 12:49 ` Michal Hocko
2016-04-17 16:59 ` Michal Hocko
2016-04-17 16:59 ` Michal Hocko
2016-04-17 16:59 ` Michal Hocko
2016-04-20 13:40 ` Peter Zijlstra [this message]
2016-04-20 13:40 ` Peter Zijlstra
2016-04-20 13:40 ` Peter Zijlstra
2016-04-20 18:04 ` H. Peter Anvin
2016-04-20 18:04 ` H. Peter Anvin
2016-04-20 20:45 ` Borislav Petkov
2016-04-20 20:45 ` Borislav Petkov
2016-04-20 20:58 ` Michal Hocko
2016-04-20 20:58 ` Michal Hocko
2016-04-20 21:06 ` H. Peter Anvin
2016-04-20 21:06 ` H. Peter Anvin
2016-04-20 21:36 ` Borislav Petkov
2016-04-20 21:36 ` Borislav Petkov
2016-04-20 22:29 ` H. Peter Anvin
2016-04-20 22:29 ` H. Peter Anvin
2016-04-21 11:35 ` Borislav Petkov
2016-04-21 11:35 ` Borislav Petkov
2016-04-21 13:09 ` Michal Hocko
2016-04-21 13:09 ` Michal Hocko
2016-04-21 13:21 ` Borislav Petkov
2016-04-21 13:21 ` Borislav Petkov
2016-04-27 12:02 ` [PATCH] x86/locking/rwsem: Cleanup ____down_write() Borislav Petkov
2016-04-27 12:02 ` Borislav Petkov
2016-04-28 10:27 ` [tip:locking/rwsem] locking/rwsem, x86: Clean up ____down_write() tip-bot for Borislav Petkov
2016-04-22 6:53 ` [PATCH 10/11] x86, rwsem: provide __down_write_killable Ingo Molnar
2016-04-22 6:53 ` Ingo Molnar
2016-04-22 6:53 ` Ingo Molnar
2016-04-13 9:57 ` [PATCH] x86: add frame annotation for call_rwsem_down_write_failed_killable Michal Hocko
2016-04-13 9:57 ` Michal Hocko
2016-04-13 9:57 ` Michal Hocko
2016-04-22 9:44 ` [tip:locking/rwsem] locking/rwsem, x86: Add frame annotation for call_rwsem_down_write_failed_killable() tip-bot for Michal Hocko
2016-04-22 9:43 ` [tip:locking/rwsem] locking/rwsem, x86: Provide __down_write_killable() tip-bot for Michal Hocko
2016-04-07 15:12 ` [PATCH 11/11] locking, rwsem: provide down_write_killable Michal Hocko
2016-04-07 15:12 ` Michal Hocko
2016-04-22 9:44 ` [tip:locking/rwsem] locking/rwsem: Provide down_write_killable() tip-bot for Michal Hocko
2016-04-12 9:37 ` [PATCH 0/11] introduce down_write_killable for rw_semaphore v3 Michal Hocko
2016-04-12 9:37 ` Michal Hocko
2016-04-12 15:40 ` Peter Zijlstra
2016-04-12 15:40 ` Peter Zijlstra
2016-04-12 18:01 ` Michal Hocko
2016-04-12 18:01 ` Michal Hocko
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