linux.git/Documentation/timers, branch v3.12

nohz_full: Add testing information to documentation

2013-08-19T01:06:55+00:00

This commit adds information about testing nohz_full, and also emphasizes
the fact that you need a multi-CPU system to get any benefit from nohz_full.

Signed-off-by: Paul E. McKenney 
Acked-by: Frederic Weisbecker 
Reviewed-by: Josh Triplett

nohz_full: Document additional restrictions

2013-06-10T20:42:38+00:00

This commit calls out the potential for slowing the tick even when there
are multiple runnable processes per CPU,  It also points out that current
mainlined version keeps the tick going on at least one CPU even when all
CPUs are otherwise idle.  Finally, it notes the need for a 1-HZ tick in
order to calculate CPU load, maintain sched average, compute CFS entity
vruntime, compute avenrun, and carry out load balancing.

Signed-off-by: Paul E. McKenney 
Reviewed-by: Josh Triplett

nohz_full: Update based on Sedat Dilek review

2013-06-10T20:42:37+00:00

Make it more clear that there are three options, and give hints as
to which of the three is most likely to be useful in different
situations.

Reported-by: Sedat Dilek 
Signed-off-by: Paul E. McKenney 
Reviewed-by: Josh Triplett

nohz_full: Add documentation.

2013-04-27T23:41:43+00:00

Signed-off-by: Paul E. McKenney 
Cc: Frederic Weisbecker 
Cc: Steven Rostedt 
Cc: Borislav Petkov 
Cc: Arjan van de Ven 
Cc: Kevin Hilman 
Cc: Christoph Lameter 
Cc: Peter Zijlstra 
Cc: Thomas Gleixner 
Cc: Olivier Baetz 
Reviewed-by: Randy Dunlap 
Reviewed-by: Borislav Petkov 
Reviewed-by: Kevin Hilman

doc: fix broken references

2011-09-27T16:08:04+00:00

There are numerous broken references to Documentation files (in other
Documentation files, in comments, etc.). These broken references are
caused by typo's in the references, and by renames or removals of the
Documentation files. Some broken references are simply odd.

Fix these broken references, sometimes by dropping the irrelevant text
they were part of.

Signed-off-by: Paul Bolle 
Signed-off-by: Jiri Kosina

doc: timers-howto: fix a typo ("unsgined")

2011-05-17T08:52:02+00:00

Signed-off-by: Jonathan Neuschäfer 
Signed-off-by: Jiri Kosina

tree-wide: fix comment/printk typos

2010-11-01T19:38:34+00:00

"gadget", "through", "command", "maintain", "maintain", "controller", "address",
"between", "initiali[zs]e", "instead", "function", "select", "already",
"equal", "access", "management", "hierarchy", "registration", "interest",
"relative", "memory", "offset", "already",

Signed-off-by: Uwe Kleine-König 
Signed-off-by: Jiri Kosina

Documentation/timers/hpet_example.c: add supporting info for hpet_example

2010-10-26T23:52:11+00:00

$./hpet_example info /dev/hpet
-hpet: executing info
hpet_info: hi_irqfreq 0x0 hi_flags 0x0 hi_hpet 0 hi_timer 2

Signed-off-by: Jaswinder Singh Rajput 
Cc: Clemens Ladisch 
Cc: "Venkatesh Pallipadi (Venki)" 
Cc: john stultz 
Cc: Thomas Gleixner 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Documentation: Add timers/timers-howto.txt

2010-08-04T09:00:45+00:00

This file seeks to explain the nuances in various delays;
many driver writers are not necessarily familiar with the
various kernel timers, their shortfalls, and quirks. When
faced with

ndelay, udelay, mdelay, usleep_range, msleep, and msleep_interrubtible

the question "How do I just wait 1 ms for my hardware to
latch?" has the non-intuitive "best" answer:
	usleep_range(1000,1500)

This patch is followed by a series of checkpatch additions
that seek to help kernel hackers pick the best delay.

Signed-off-by: Patrick Pannuto 
Cc: apw@canonical.com
Cc: corbet@lwn.net
Cc: arjan@linux.intel.com
Cc: Randy Dunlap 
Cc: Andrew Morton 
LKML-Reference: <1280786467-26999-3-git-send-email-ppannuto@codeaurora.org>
Signed-off-by: Thomas Gleixner

Documentation/timers/hpet_example.c: only build on X86

2010-06-01T17:05:19+00:00

We should only build hpet_example on x86[-64], where it is implemented.
It can cause build errors on other architectures.

Signed-off-by: Randy Dunlap 
Reported-by: Heiko Carstens 
Cc: Heiko Carstens 
Cc: Arjan van de Ven 
Signed-off-by: Linus Torvalds