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authorArnd Bergmann <arnd@arndb.de>2014-04-07 15:33:06 (GMT)
committerLinus Torvalds <torvalds@linux-foundation.org>2014-04-07 18:24:06 (GMT)
commitb8780c363d808a726a34793caa900923d32b6b80 (patch)
tree06e8fe284ccbad76fb2fca0d9e982e5de49bf245 /Documentation
parent240cd6a817bd855e3f1e615ed9ae16407f8cfce6 (diff)
downloadlinux-b8780c363d808a726a34793caa900923d32b6b80.tar.xz
sched: remove sleep_on() and friends
This is the final piece in the puzzle, as all patches to remove the last users of \(interruptible_\|\)sleep_on\(_timeout\|\) have made it into the 3.15 merge window. The work was long overdue, and this interface in particular should not have survived the BKL removal that was done a couple of years ago. Citing Jon Corbet from http://lwn.net/2001/0201/kernel.php3": "[...] it was suggested that the janitors look for and fix all code that calls sleep_on() [...] since (1) almost all such code is incorrect, and (2) Linus has agreed that those functions should be removed in the 2.5 development series". We haven't quite made it for 2.5, but maybe we can merge this for 3.15. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ingo Molnar <mingo@kernel.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/DocBook/kernel-hacking.tmpl10
1 files changed, 0 insertions, 10 deletions
diff --git a/Documentation/DocBook/kernel-hacking.tmpl b/Documentation/DocBook/kernel-hacking.tmpl
index d0758b2..bd9015d 100644
--- a/Documentation/DocBook/kernel-hacking.tmpl
+++ b/Documentation/DocBook/kernel-hacking.tmpl
@@ -850,16 +850,6 @@ printk(KERN_INFO "my ip: %pI4\n", &amp;ipaddress);
<returnvalue>-ERESTARTSYS</returnvalue> if a signal is received.
The <function>wait_event()</function> version ignores signals.
</para>
- <para>
- Do not use the <function>sleep_on()</function> function family -
- it is very easy to accidentally introduce races; almost certainly
- one of the <function>wait_event()</function> family will do, or a
- loop around <function>schedule_timeout()</function>. If you choose
- to loop around <function>schedule_timeout()</function> remember
- you must set the task state (with
- <function>set_current_state()</function>) on each iteration to avoid
- busy-looping.
- </para>
</sect1>