linux-toradex.git/include/linux/ktime.h, branch v2.6.38.5

ktime: introduce ktime_to_ms()

2010-05-14T19:09:32+00:00

To report ktime statistics to user space in milliseconds, a new helper
is required.

When considering how to do this conversion, I didn't immediately see
why the extra step of converting ktime to a timeval was needed.  To
make that more clear, introduce a couple of large comments.

Signed-off-by: Chuck Lever 
Signed-off-by: Trond Myklebust

time: add ns_to_ktime()

2008-04-19T17:44:57+00:00

Signed-off-by: Ingo Molnar

hrtimer: check relative timeouts for overflow

2008-02-14T21:08:30+00:00

Various user space callers ask for relative timeouts. While we fixed
that overflow issue in hrtimer_start(), the sites which convert
relative user space values to absolute timeouts themself were uncovered.

Instead of putting overflow checks into each place add a function
which does the sanity checking and convert all affected callers to use
it.

Thanks to Frans Pop, who reported the problem and tested the fixes.

Signed-off-by: Thomas Gleixner 
Acked-by: Ingo Molnar 
Tested-by: Frans Pop

Fix compilation of powerpc asm-offsets.c with old gcc

2008-02-07T22:54:45+00:00

Commit ad7f71674ad7c3c4467e48f6ab9e85516dae2720 ("[POWERPC] Use a
sensible default for clock_getres() in the VDSO") corrected the clock
resolution reported by the VDSO clock_getres() but introduced another
problem in that older versions of gcc (gcc-4.0 and earlier) fail to
compile the new code in arch/powerpc/kernel/asm-offsets.c.

This fixes it by introducing a new MONOTONIC_RES_NSEC define in the
generic code which is equivalent to KTIME_MONOTONIC_RES but is just an
integer constant, not a ktime union.

Signed-off-by: Tony Breeds 
Signed-off-by: Paul Mackerras 
Signed-off-by: Linus Torvalds

[KTIME]: Introduce ktime_sub_ns and ktime_sub_us

2007-10-10T23:48:12+00:00

First user will be the DCCP transport networking protocol.

Signed-off-by: Arnaldo Carvalho de Melo 
Signed-off-by: David S. Miller

[KTIME]: Introduce ktime_add_us

2007-07-11T05:15:26+00:00

Signed-off-by: Arnaldo Carvalho de Melo

[KTIME]: Introduce ktime_us_delta

2007-07-11T05:15:25+00:00

This provides a reusable time difference function which returns the difference in
microseconds, as often used in the DCCP code.

Commiter note: renamed ktime_delta to ktime_us_delta and put it in ktime.h.

Signed-off-by: Gerrit Renker 
Signed-off-by: Arnaldo Carvalho de Melo

[TCP]: Congestion control API RTT sampling fix

2007-06-15T22:08:43+00:00

Commit 164891aadf1721fca4dce473bb0e0998181537c6 broke RTT
sampling of congestion control modules. Inaccurate timestamps
could be fed to them without providing any way for them to
identify such cases. Previously RTT sampler was called only if
FLAG_RETRANS_DATA_ACKED was not set filtering inaccurate
timestamps nicely. In addition, the new behavior could give an
invalid timestamp (zero) to RTT sampler if only skbs with
TCPCB_RETRANS were ACKed. This solves both problems.

Signed-off-by: Ilpo Järvinen 
Signed-off-by: David S. Miller

declare struct ktime

2007-05-09T19:30:54+00:00

Some smarty went and inflicted ktime_t as a typedef upon us, so we cannot
forward declare it.

Create a new `union ktime', map ktime_t onto that.  Now we need to kill off
this ktime_t thing.

Cc: Ingo Molnar 
Cc: Thomas Gleixner 
Cc: john stultz 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[TCP]: Fix linkage errors on i386.

2007-04-26T05:29:49+00:00

To avoid raw division, use ktime_to_timeval() to get usec.

Signed-off-by: YOSHIFUJI Hideaki 
Signed-off-by: David S. Miller