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Author SHA1 Message Date
Thomas Gleixner 6ff1b4c013 futex.2: Document FUTEX_WAIT_REQUEUE_PI 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2015-12-15 14:39:45 +01:00
Michael Kerrisk c6d8cf213c futex.2: srcfix 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2015-12-15 14:39:45 +01:00
Michael Kerrisk 936876a994 futex.2: wfix 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2015-12-15 14:39:45 +01:00
Michael Kerrisk de5a3bb47d futex.2: wfix 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2015-12-15 14:39:45 +01:00
Michael Kerrisk a696857697 futex.2: srcfix 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2015-12-15 14:39:45 +01:00
Michael Kerrisk 768d3c2355 futex.2: Use 'val2' as the term for 'timeout' cast to 'u32' 
This simplifies the text somewhat, so we don't need
to repeatedly describe how 'timeout' is cast 'u32'.

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2015-12-15 14:39:45 +01:00
Michael Kerrisk 99c0041df4 futex.2: ERRORS: add another EINVAL case (uaddr2) for FUTEX_CMP_REQUEUE_PI 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2015-12-15 14:39:45 +01:00
Michael Kerrisk f9250b1a1a futex.2: ERRORS: add EINVAL case for FUTEX_CMP_REQUEUE_PI 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2015-12-15 14:39:45 +01:00
Michael Kerrisk 025e137469 futex.2: ffix 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2015-12-15 14:39:45 +01:00
Michael Kerrisk 476debd7ea futex.2: ERRORS: place two similar EINVAL cases together 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2015-12-15 14:39:44 +01:00
Michael Kerrisk 662c0da854 futex.2: ERRORS: add EDEADLK case for FUTEX_CMP_REQUEUE_PI 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2015-12-15 14:39:44 +01:00
Michael Kerrisk dc2742a8aa futex.2: ERRORS: add EPERM case for FUTEX_CMP_REQUEUE_PI 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2015-12-15 14:39:44 +01:00
Michael Kerrisk 04331c3fd8 futex.2: wfix for EPERM error 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2015-12-15 14:39:44 +01:00
Michael Kerrisk 5eeca85632 futex.2: srcfix: add FIXME for "spurios wakeup" question from Rich Felker 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2015-12-15 14:39:44 +01:00
Michael Kerrisk 2043f2c133 futex.2: ERRORS: added EINVAL case for FUTEX_CMP_REQUEUE_PI 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2015-12-15 14:39:44 +01:00
Michael Kerrisk 670b34f8e8 futex.2: srcfix: FIXME 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2015-12-15 14:39:44 +01:00
Michael Kerrisk 794bb106f4 futex.2: ERRORS: add ENOSYS case for FUTEX_WAIT_REQUEUE_PI 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2015-12-15 14:39:44 +01:00
Michael Kerrisk 4945ff19bb futex.2: ERRORS: add ENOSYS case for FUTEX_CMP_REQUEUE_PI 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2015-12-15 14:39:44 +01:00
Michael Kerrisk a2ebebcdc7 futex.2: wfix for ENOSYS error 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2015-12-15 14:39:44 +01:00
Michael Kerrisk 8f2068bbe4 futex.2: ERRORS: add EAGAIN case for FUTEX_CMP_REQUEUE_PI (uaddr futex != val3) 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2015-12-15 14:39:44 +01:00
Michael Kerrisk aaec90325b futex.2: ERRORS: add EAGAIN case for FUTEX_CMP_REQUEUE_PI (uaddr2 owner exiting) 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2015-12-15 14:39:44 +01:00
Michael Kerrisk 8727670917 futex.2: tfix 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2015-12-15 14:39:44 +01:00
Michael Kerrisk ce5602fde5 futex.2: wfix 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2015-12-15 14:39:44 +01:00
Michael Kerrisk 360f773c2b futex.2: ERRORS: add ESRCH case for FUTEX_CMP_REQUEUE_PI 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2015-12-15 14:39:44 +01:00
Michael Kerrisk 2ed261994a futex.2: SEE ALSO: add pointer to Hart LWN.net article 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2015-12-15 14:39:44 +01:00
Michael Kerrisk f6af90e736 futex.2: ffix (ASCII art layout) 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2015-12-15 14:39:44 +01:00
Michael Kerrisk c8b921bd42 futex.2: tfix 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2015-12-15 14:39:44 +01:00
Michael Kerrisk c84cf68c3b futex.2: wfix 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2015-12-15 14:39:44 +01:00
Michael Kerrisk be37667386 futex.2: srcfix: FIXME 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2015-12-15 14:39:44 +01:00
Michael Kerrisk fc57e6bb5e futex.2: srcfix: FIXME 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2015-12-15 14:39:44 +01:00
Michael Kerrisk e34a8fb6c3 futex.2: ERRORS: Add ENOMEM case for FUTEX_CMP_REQUEUE_PI 
Reported-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2015-12-15 14:39:44 +01:00
Michael Kerrisk 9e54d26d3c futex.2: Add further details for FUTEX_CMP_REQUEUE_PI 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2015-12-15 14:39:44 +01:00
Darren Hart f812a08b1d futex.2: Describe FUTEX_CMP_REQUEUE_PI 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2015-12-15 14:39:44 +01:00
Michael Kerrisk 084744ef24 futex.2: Note arguments ignored by FUTEX_TRYLOCK_PI 
Reported-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2015-12-15 14:39:44 +01:00
Michael Kerrisk 11a194bff8 futex.2: wfix 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2015-12-15 14:39:44 +01:00
Michael Kerrisk 0b76182603 futex.2: srfix: FIXME 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2015-12-15 14:39:43 +01:00
Michael Kerrisk c0091dd3ff futex.2: srcfix: FIXME 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2015-12-15 14:39:43 +01:00
Michael Kerrisk badbf70cad futex.2: Replace instances of EWOULDBLOCK by EAGAIN 
On Linux, the two error numbers are the same. The kernel
code for futexes is somehwat inconsistent, using EAGAIN
in some places, and EWOULDBLOCK in others. Let's make the
manual page consistent at least.

This change requires reordering of one entry in ERRORS.

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2015-12-15 14:39:43 +01:00
Michael Kerrisk fa0388c309 futex.2: Rework FUTEXT_TRYLOCK_PI text a litte + add FIXMEs 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2015-12-15 14:39:43 +01:00
Michael Kerrisk 67833bec78 futex.2: Rework FUTEX_LOCK_PI text and add FIXMEs 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2015-12-15 14:39:43 +01:00
Michael Kerrisk b52e1cd4a8 futex.2: Further tweaks to PI introductory text 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2015-12-15 14:39:43 +01:00
Michael Kerrisk f5ad572fcf futex.2: ffix 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2015-12-15 14:39:43 +01:00
Michael Kerrisk 0483b6cce7 futex.2: Add more references to SEE ALSO 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2015-12-15 14:39:43 +01:00
Michael Kerrisk 79d918c7af futex.2: Rework Hart/Guniguntala text 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2015-12-15 14:39:43 +01:00
Michael Kerrisk 7c16fbff95 futex.2: Integrate text from Darren Hart on PI Mutexes 
From the 2009 Real-Time Linux Workshop paper
Requeue-PI: Making Glibc Condvars PI-Aware
Darren Hart, Dinakar Guniguntala
http://lwn.net/images/conf/rtlws11/papers/proc/p10.pdf

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2015-12-15 14:39:43 +01:00
Michael Kerrisk b4d4f5c537 futex.2: srcfix: Remove obsolete FIXME 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2015-12-15 14:39:43 +01:00
Michael Kerrisk bd90a5f9c3 futex.2: Add subsection for PI futexes 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2015-12-15 14:39:43 +01:00
Michael Kerrisk 9ce19cf1b7 futex.2: Fix discussion of FUTEX_LOCK_PI 'timeout' argument 
Reading futex_lock_pi(), it appears that the timeout is *not*
interpreted in the same way as for FUTEX_WAKE.

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2015-12-15 14:39:43 +01:00
Michael Kerrisk a8b5b324e3 futex.2: RETURN VALUE: add FUTEX_WAKE_OP 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2015-12-15 14:39:43 +01:00
Michael Kerrisk 22c15de938 futex.2: RETURN VALUE: add FUTEX_WAIT_REQUEUE_PI 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2015-12-15 14:39:43 +01:00