Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > linux.kernel > #1324592 > unrolled thread
| Started by | Michal Hocko <mhocko@kernel.org> |
|---|---|
| First post | 2016-02-02 21:30 +0100 |
| Last post | 2016-02-03 13:20 +0100 |
| Articles | 3 — 2 participants |
Back to article view | Back to linux.kernel
This discussion starts older than the indexed window; earlier articles aren't shown. The article labeled Started by
below is the oldest one visible, not the original post.
[RFC 07/12] sh, rwsem: provide __down_write_killable Michal Hocko <mhocko@kernel.org> - 2016-02-02 21:30 +0100
Re: [RFC 07/12] sh, rwsem: provide __down_write_killable Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> - 2016-02-03 12:20 +0100
Re: [RFC 07/12] sh, rwsem: provide __down_write_killable Michal Hocko <mhocko@kernel.org> - 2016-02-03 13:20 +0100
| From | Michal Hocko <mhocko@kernel.org> |
|---|---|
| Date | 2016-02-02 21:30 +0100 |
| Subject | [RFC 07/12] sh, rwsem: provide __down_write_killable |
| Message-ID | <qXPKi-8sh-9@gated-at.bofh.it> |
From: Michal Hocko <mhocko@suse.com>
which is uses the same fast path as __down_write except it falls back to
rwsem_down_write_failed_killable slow path and return -EINTR if killed.
Signed-off-by: Michal Hocko <mhocko@suse.com>
---
arch/sh/include/asm/rwsem.h | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/arch/sh/include/asm/rwsem.h b/arch/sh/include/asm/rwsem.h
index f6c951c7a875..8a457b83d2a5 100644
--- a/arch/sh/include/asm/rwsem.h
+++ b/arch/sh/include/asm/rwsem.h
@@ -54,6 +54,19 @@ static inline void __down_write(struct rw_semaphore *sem)
rwsem_down_write_failed(sem);
}
+static inline int __down_write_killable(struct rw_semaphore *sem)
+{
+ int tmp;
+
+ tmp = atomic_add_return(RWSEM_ACTIVE_WRITE_BIAS,
+ (atomic_t *)(&sem->count));
+ if (tmp != RWSEM_ACTIVE_WRITE_BIAS)
+ if (IS_ERR(rwsem_down_write_failed_killable(sem)))
+ return -EINTR;
+
+ return 0;
+}
+
static inline int __down_write_trylock(struct rw_semaphore *sem)
{
int tmp;
--
2.7.0
[toc] | [next] | [standalone]
| From | Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> |
|---|---|
| Date | 2016-02-03 12:20 +0100 |
| Message-ID | <qY3DA-1cM-3@gated-at.bofh.it> |
| In reply to | #1324592 |
Hello.
On 2/2/2016 11:19 PM, Michal Hocko wrote:
> From: Michal Hocko <mhocko@suse.com>
>
> which is uses the same fast path as __down_write except it falls back to
s/is//. Same typo (?) in the other patches...
> rwsem_down_write_failed_killable slow path and return -EINTR if killed.
>
> Signed-off-by: Michal Hocko <mhocko@suse.com>
[...]
MBR, Sergei
[toc] | [prev] | [next] | [standalone]
| From | Michal Hocko <mhocko@kernel.org> |
|---|---|
| Date | 2016-02-03 13:20 +0100 |
| Message-ID | <qY4zE-1Ok-13@gated-at.bofh.it> |
| In reply to | #1325219 |
On Wed 03-02-16 14:19:05, Sergei Shtylyov wrote: > Hello. > > On 2/2/2016 11:19 PM, Michal Hocko wrote: > > >From: Michal Hocko <mhocko@suse.com> > > > >which is uses the same fast path as __down_write except it falls back to > > s/is//. Same typo (?) in the other patches... Thanks will fix that. > > >rwsem_down_write_failed_killable slow path and return -EINTR if killed. > > > >Signed-off-by: Michal Hocko <mhocko@suse.com> > > [...] > > MBR, Sergei > -- Michal Hocko SUSE Labs
[toc] | [prev] | [standalone]
Back to top | Article view | linux.kernel
csiph-web