From: Manfred Spraul <manfred@colorfullife.com>
To: Davidlohr Bueso <davidlohr.bueso@hp.com>,
Michael Kerrisk <mtk.manpages@gmail.com>
Cc: LKML <linux-kernel@vger.kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
1vier1@web.de, Manfred Spraul <manfred@colorfullife.com>
Subject: [PATCH 0/6] ipc/sem.c: Fix semctl(,,{GETNCNT,GETZCNT})
Date: Sat, 10 May 2014 12:03:13 +0200 [thread overview]
Message-ID: <1399716199-26776-1-git-send-email-manfred@colorfullife.com> (raw)
Hi all,
According to the man page of semop(), semzcnt or semncnt are increased
exactly for the operation that couldn't proceed.
The Linux implementation always tried to be clever and to increase the counters
for all operations that might be the reason why a task sleeps.
The following patches fix that and make the code conform to the
documentation.
The series got fairly long, because I also noticed that semzcnt was calculated
incorrectly.
What do you think?
I ran a few test cases, and the semncnt and semzcnt counts now match
the expectation.
Is anyone aware of an application that uses GETNCNT or GETZCNT?
--
Manfred
next reply other threads:[~2014-05-10 10:03 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-10 10:03 Manfred Spraul [this message]
2014-05-10 10:03 ` [PATCH 1/6] ipc/sem.c: further whitespace cleanups Manfred Spraul
2014-05-10 10:03 ` [PATCH 2/6] ipc/sem.c: Bugfix for semctl(,,GETZCNT) Manfred Spraul
2014-05-10 10:03 ` [PATCH 3/6] ipc/sem.c: remove code duplication Manfred Spraul
2014-05-10 10:03 ` [PATCH 4/6] ipc/sem.c: Change perform_atomic_semop parameters Manfred Spraul
2014-05-10 10:03 ` [PATCH 5/6] ipc/sem.c: Store which operation blocks in perform_atomic_semop() Manfred Spraul
2014-05-10 10:03 ` [PATCH 6/6] ipc/sem.c: make semctl(,,{GETNCNT,GETZCNT}) standard compliant Manfred Spraul
2014-05-14 14:52 ` Davidlohr Bueso
2014-05-14 22:30 ` Andrew Morton
2014-05-15 4:24 ` Manfred Spraul
2014-05-13 0:04 ` [PATCH 4/6] ipc/sem.c: Change perform_atomic_semop parameters Davidlohr Bueso
2014-05-12 18:19 ` [PATCH 3/6] ipc/sem.c: remove code duplication Davidlohr Bueso
2014-05-12 18:11 ` [PATCH 2/6] ipc/sem.c: Bugfix for semctl(,,GETZCNT) Davidlohr Bueso
2014-05-13 17:43 ` Manfred Spraul
2014-05-11 23:34 ` [PATCH 1/6] ipc/sem.c: further whitespace cleanups Davidlohr Bueso
2014-05-12 17:50 ` Manfred Spraul
2014-05-12 2:56 ` [PATCH 0/6] ipc/sem.c: Fix semctl(,,{GETNCNT,GETZCNT}) Davidlohr Bueso
2014-05-12 8:02 ` Michael Kerrisk (man-pages)
2014-05-12 17:43 ` Manfred Spraul
2014-05-18 7:58 Manfred Spraul
2014-05-18 18:03 ` Davidlohr Bueso
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