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13 Commits

Author SHA1 Message Date
Tomasz Bursztyka 814f5d0b5e sys_clock: Add a helper to compute micro seconds 
As for SECONDS() and MSEC, now sys_clock.h provides a USEC() macro.

Change-Id: I43e8b132d2deeb862d8cfda1f785115f339d6ddb
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
 2016-04-07 16:51:07 +00:00
Dmitriy Korovkin 9b2452047d kernel: Combine nano_timers and nano_timeouts 
To avoid code duplication nano_timers use nano_timeout
mechanism.

Change-Id: I916bffd2b86e29ee7b7ff7bbb009cd4c844e2a44
Signed-off-by: Dmitriy Korovkin <dmitriy.korovkin@windriver.com>
 2016-03-26 09:20:10 +00:00
Peter Mitsis a0e4568760 c++: Add extern "C" { } block to header files 
Adds extern "C" { } blocks to header files so that they can be
safely used by C++ source files.

Change-Id: Ia4db0c36a5dac5d3de351184a297d2af0df64532
Signed-off-by: Peter Mitsis <peter.mitsis@windriver.com>
 2016-02-05 20:25:22 -05:00
Anas Nashif 275ca60b08 Fixed file description and applied doxygen style 
Removed old style file description and documnetation and apply
doxygen synatx.

Change-Id: I3ac9f06d4f574bf3c79c6f6044cec3a7e2f6e4c8
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
 2016-02-05 20:24:58 -05:00
Peter Mitsis 43b05eb463 sys_clock: Rename _nano_ticks 
Renames nanokernel global variable _nano_ticks to _sys_clock_tick_count.

Change-Id: I857407f1f7e8d9fd2eedc1c1696851173e58d2b4
Signed-off-by: Peter Mitsis <peter.mitsis@windriver.com>
 2016-02-05 20:24:53 -05:00
Benjamin Walsh fde6458f0b sys_clock: add option for setting timer frequency at runtime 
Some timer devices, such as the HPET, read their frequencies at runtime.
All global constant values must be set at runtime in that case.

Change-Id: I408babce6deb857748a87691132d7e27e88f0bb8
Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
 2016-02-05 20:24:53 -05:00
Dan Kalowsky da67b29569 checkpatch: warning - block_comment_style 
Change-Id: I6da43e41f9c6efee577b70513ec368ae3cce0144
Signed-off-by: Dan Kalowsky <daniel.kalowsky@intel.com>
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
 2016-02-05 20:24:33 -05:00
Javier B Perez Hernandez f7fffae8aa Change BSD-3 licenses to Apache 2 
Change all the Intel and Wind River code license from BSD-3 to Apache 2.

Change-Id: Id8be2c1c161a06ea8a0b9f38e17660e11dbb384b
Signed-off-by: Javier B Perez Hernandez <javier.b.perez.hernandez@linux.intel.com>
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
 2016-02-05 20:24:29 -05:00
Benjamin Walsh 136c18e683 sys_clock: add some more useful time conversion macros 
Change-Id: I0ae05d1b9f871b7b832581552442409233cdec5e
Original-work-by: Benjamin Walsh <benjamin.walsh@windriver.com>
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
 2016-02-05 20:24:28 -05:00
Benjamin Walsh 2d12752637 sys_clock: make public some timing utilities 
Make these public:

  - SECONDS(x): macro that gives the number of ticks in x seconds
  - MSEC(x): macro that gives the number of ticks in x milliseconds
  - MSEC_PER_SEC: number of milliseconds per second
  - USEC_PER_MSEC: number of microseconds per millisecond

Change-Id: Ic5dbf9349651a477b066edb0c6b6721da2b7e5bb
Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
 2016-02-05 20:15:27 -05:00
Peter Mitsis d2857404f5 Kconfig: fix SYS_CLOCK_HW_CYCLES_PER_SEC dependencies 
Fixes the SYS_CLOCK_HW_CYCLES_PER_SEC Kconfig option dependencies such that
it can be overridden by a modified platform configuration file.  This is
particularly important for the LOAPIC timer driver as
SYS_CLOCK_HW_CYCLES_PER_SEC is dependent upon the target's CPU/bus frequency.

Change-Id: I0fb49b4c540888cb1988c76e2a711a85e756f82c
Signed-off-by: Peter Mitsis <peter.mitsis@windriver.com>
 2016-02-05 20:14:42 -05:00
Anas Nashif ea0d0b220c doxygen: change comment style to match javadoc 
The change replaces multiple asterisks to ** at
the beginning of comments and adds a space before
the asterisks at the beginning of lines.

Change-Id: I7656bde3bf4d9a31e38941e43b580520432dabc1
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
 2016-02-05 20:14:32 -05:00
Allan Stephens 478128cf9e Rename kernel's clock_vars.h to sys_clock.h 
The revised name better reflects the fact that the file defines
macros in addition to declaring variables. In addition, most of
these APIs use the "sys_clock_" prefix, which aligns well with
the new file name.

Change-Id: Ib33517d4b19ec2455303b87200c677e87640fcbc
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
 2016-02-05 20:14:26 -05:00