linux-toradex.git/include/linux/ktime.h, branch v3.10.51

net: socket: move ktime2ts to ktime header api

2013-04-19T20:39:13+00:00

Currently, ktime2ts is a small helper function that is only used in
net/socket.c. Move this helper into the ktime API as a small inline
function, so that i) it's maintained together with ktime routines,
and ii) also other files can make use of it. The function is named
ktime_to_timespec_cond() and placed into the generic part of ktime,
since we internally make use of ktime_to_timespec(). ktime_to_timespec()
itself does not check the ktime variable for zero, hence, we name
this function ktime_to_timespec_cond() for only a conditional
conversion, and adapt its users to it.

Signed-off-by: Daniel Borkmann 
Signed-off-by: David S. Miller

pktgen: clean up ktime_t helpers

2012-11-03T18:50:15+00:00

Some years ago, the ktime_t helper functions ktime_now() and ktime_lt()
have been introduced. Instead of defining them inside pktgen.c, they
should either use ktime_t library functions or, if not available, they
should be defined in ktime.h, so that also others can benefit from them.
ktime_compare() is introduced with a similar notion as in timespec_compare().

Signed-off-by: Daniel Borkmann 
Cc: Cong Wang 
Cc: Stephen Hemminger 
Cc: Thomas Gleixner 
Acked-by: Thomas Gleixner 
Signed-off-by: David S. Miller

time: Improve sanity checking of timekeeping inputs

2012-08-15T13:54:01+00:00

Unexpected behavior could occur if the time is set to a value large
enough to overflow a 64bit ktime_t (which is something larger then the
year 2262).

Also unexpected behavior could occur if large negative offsets are
injected via adjtimex.

So this patch improves the sanity check timekeeping inputs by
improving the timespec_valid() check, and then makes better use of
timespec_valid() to make sure we don't set the time to an invalid
negative value or one that overflows ktime_t.

Note: This does not protect from setting the time close to overflowing
ktime_t and then letting natural accumulation cause the overflow.

Reported-by: CAI Qian 
Reported-by: Sasha Levin 
Signed-off-by: John Stultz 
Cc: Peter Zijlstra 
Cc: Prarit Bhargava 
Cc: Zhouping Liu 
Cc: Ingo Molnar 
Cc: stable@vger.kernel.org
Link: http://lkml.kernel.org/r/1344454580-17031-1-git-send-email-john.stultz@linaro.org
Signed-off-by: Thomas Gleixner

Fix common misspellings

2011-03-31T14:26:23+00:00

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi

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