From: Kirill Tkhai <ktkhai@virtuozzo.com> To: linux-ia64@vger.kernel.org, avagin@virtuozzo.com, peterz@infradead.org, heiko.carstens@de.ibm.com, hpa@zytor.com, gorcunov@virtuozzo.com, linux-arch@vger.kernel.org, linux-s390@vger.kernel.org, x86@kernel.org, mingo@redhat.com, mattst88@gmail.com, fenghua.yu@intel.com, arnd@arndb.de, ktkhai@virtuozzo.com, ink@jurassic.park.msu.ru, tglx@linutronix.de, rth@twiddle.net, tony.luck@intel.com, linux-kernel@vger.kernel.org, linux-alpha@vger.kernel.org, schwidefsky@de.ibm.com, davem@davemloft.net, rientjes@google.com, viro@zeniv.linux.org.uk Subject: [PATCH REBASED 3/6] s390: Add __down_read_killable() Date: Fri, 29 Sep 2017 19:06:18 +0300 [thread overview] Message-ID: <150670117817.23930.13068785028558453848.stgit@localhost.localdomain> (raw) In-Reply-To: <150670038738.23930.7190484711222807884.stgit@localhost.localdomain> Similar to __down_write_killable(), and read killable primitive. Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com> --- arch/s390/include/asm/rwsem.h | 18 ++++++++++++++++-- 1 file changed, 16 insertions(+), 2 deletions(-) diff --git a/arch/s390/include/asm/rwsem.h b/arch/s390/include/asm/rwsem.h index 597e7e96b59e..6bef7d5fbf1c 100644 --- a/arch/s390/include/asm/rwsem.h +++ b/arch/s390/include/asm/rwsem.h @@ -49,7 +49,7 @@ /* * lock for reading */ -static inline void __down_read(struct rw_semaphore *sem) +static inline int ___down_read(struct rw_semaphore *sem) { signed long old, new; @@ -62,10 +62,24 @@ static inline void __down_read(struct rw_semaphore *sem) : "=&d" (old), "=&d" (new), "=Q" (sem->count) : "Q" (sem->count), "i" (RWSEM_ACTIVE_READ_BIAS) : "cc", "memory"); - if (old < 0) + return (old < 0); +} + +static inline void __down_read(struct rw_semaphore *sem) +{ + if (___down_read(sem)) rwsem_down_read_failed(sem); } +static inline int __down_read_killable(struct rw_semaphore *sem) +{ + if (___down_read(sem)) + if (IS_ERR(rwsem_down_read_failed_killable(sem))) + return -EINTR; + + return 0; +} + /* * trylock for reading -- returns 1 if successful, 0 if contention */
WARNING: multiple messages have this Message-ID (diff)
From: Kirill Tkhai <ktkhai@virtuozzo.com> To: linux-ia64@vger.kernel.org, avagin@virtuozzo.com, peterz@infradead.org, heiko.carstens@de.ibm.com, hpa@zytor.com, gorcunov@virtuozzo.com, linux-arch@vger.kernel.org, linux-s390@vger.kernel.org, x86@kernel.org, mingo@redhat.com, mattst88@gmail.com, fenghua.yu@intel.com, arnd@arndb.de, ktkhai@virtuozzo.com, ink@jurassic.park.msu.ru, tglx@linutronix.de, rth@twiddle.net, tony.luck@intel.com, linux-kernel@vger.kernel.org, linux-alpha@vger.kernel.org, schwidefsky@de.ibm.com, davem@davemloft.net, rientjes@google.com, viro@zeniv.linux.org.uk Subject: [PATCH REBASED 3/6] s390: Add __down_read_killable() Date: Fri, 29 Sep 2017 16:06:18 +0000 [thread overview] Message-ID: <150670117817.23930.13068785028558453848.stgit@localhost.localdomain> (raw) In-Reply-To: <150670038738.23930.7190484711222807884.stgit@localhost.localdomain> Similar to __down_write_killable(), and read killable primitive. Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com> --- arch/s390/include/asm/rwsem.h | 18 ++++++++++++++++-- 1 file changed, 16 insertions(+), 2 deletions(-) diff --git a/arch/s390/include/asm/rwsem.h b/arch/s390/include/asm/rwsem.h index 597e7e96b59e..6bef7d5fbf1c 100644 --- a/arch/s390/include/asm/rwsem.h +++ b/arch/s390/include/asm/rwsem.h @@ -49,7 +49,7 @@ /* * lock for reading */ -static inline void __down_read(struct rw_semaphore *sem) +static inline int ___down_read(struct rw_semaphore *sem) { signed long old, new; @@ -62,10 +62,24 @@ static inline void __down_read(struct rw_semaphore *sem) : "=&d" (old), "=&d" (new), "=Q" (sem->count) : "Q" (sem->count), "i" (RWSEM_ACTIVE_READ_BIAS) : "cc", "memory"); - if (old < 0) + return (old < 0); +} + +static inline void __down_read(struct rw_semaphore *sem) +{ + if (___down_read(sem)) rwsem_down_read_failed(sem); } +static inline int __down_read_killable(struct rw_semaphore *sem) +{ + if (___down_read(sem)) + if (IS_ERR(rwsem_down_read_failed_killable(sem))) + return -EINTR; + + return 0; +} + /* * trylock for reading -- returns 1 if successful, 0 if contention */
next prev parent reply other threads:[~2017-09-29 16:06 UTC|newest] Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top 2017-09-29 16:05 [PATCH REBASED 0/6] rwsem: Implement down_read_killable() Kirill Tkhai 2017-09-29 16:05 ` Kirill Tkhai 2017-09-29 16:05 ` [PATCH REBASED 1/6] alpha: Add __down_read_killable() Kirill Tkhai 2017-09-29 16:05 ` Kirill Tkhai 2017-10-10 11:03 ` [tip:locking/core] locking/arch, " tip-bot for Kirill Tkhai 2017-09-29 16:06 ` [PATCH REBASED 2/6] ia64: " Kirill Tkhai 2017-09-29 16:06 ` Kirill Tkhai 2017-10-10 11:04 ` [tip:locking/core] locking/arch, " tip-bot for Kirill Tkhai 2017-09-29 16:06 ` Kirill Tkhai [this message] 2017-09-29 16:06 ` [PATCH REBASED 3/6] s390: " Kirill Tkhai 2017-09-30 9:20 ` Heiko Carstens 2017-09-30 9:20 ` Heiko Carstens 2017-09-30 10:36 ` Martin Schwidefsky 2017-09-30 10:36 ` Martin Schwidefsky 2017-09-30 10:38 ` Heiko Carstens 2017-09-30 10:38 ` Heiko Carstens 2017-09-30 10:39 ` Martin Schwidefsky 2017-09-30 10:39 ` Martin Schwidefsky 2017-10-10 11:04 ` [tip:locking/core] locking/arch, " tip-bot for Kirill Tkhai 2017-09-29 16:06 ` [PATCH REBASED 4/6] x86: " Kirill Tkhai 2017-09-29 16:06 ` Kirill Tkhai 2017-10-10 11:05 ` [tip:locking/core] locking/arch, " tip-bot for Kirill Tkhai 2017-09-29 16:06 ` [PATCH REBASED 5/6] rwsem: Add down_read_killable() Kirill Tkhai 2017-09-29 16:06 ` Kirill Tkhai 2017-10-10 11:05 ` [tip:locking/core] locking/rwsem: " tip-bot for Kirill Tkhai 2017-09-29 16:06 ` [PATCH REBASED 6/6] fs: Use killable down_read() in iterate_dir() Kirill Tkhai 2017-09-29 16:06 ` Kirill Tkhai 2017-09-29 16:06 ` Kirill Tkhai 2017-10-10 11:05 ` [tip:locking/core] locking/rwsem, " tip-bot for Kirill Tkhai 2017-10-03 9:03 ` [PATCH REBASED 0/6] rwsem: Implement down_read_killable() Peter Zijlstra 2017-10-03 9:03 ` Peter Zijlstra
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=150670117817.23930.13068785028558453848.stgit@localhost.localdomain \ --to=ktkhai@virtuozzo.com \ --cc=arnd@arndb.de \ --cc=avagin@virtuozzo.com \ --cc=davem@davemloft.net \ --cc=fenghua.yu@intel.com \ --cc=gorcunov@virtuozzo.com \ --cc=heiko.carstens@de.ibm.com \ --cc=hpa@zytor.com \ --cc=ink@jurassic.park.msu.ru \ --cc=linux-alpha@vger.kernel.org \ --cc=linux-arch@vger.kernel.org \ --cc=linux-ia64@vger.kernel.org \ --cc=linux-kernel@vger.kernel.org \ --cc=linux-s390@vger.kernel.org \ --cc=mattst88@gmail.com \ --cc=mingo@redhat.com \ --cc=peterz@infradead.org \ --cc=rientjes@google.com \ --cc=rth@twiddle.net \ --cc=schwidefsky@de.ibm.com \ --cc=tglx@linutronix.de \ --cc=tony.luck@intel.com \ --cc=viro@zeniv.linux.org.uk \ --cc=x86@kernel.org \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes, see mirroring instructions on how to clone and mirror all data and code used by this external index.