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timecounter: Merge FreeBSD change r303383

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Reduce number of timehands to just two. This is useful because consumers can now be only one tc_windup() call late.

Use C99 initialization.

Tested by:	pho (as part of the whole patch)
Reviewed by:	jhb (same)
Discussed with:	bde
Sponsored by:	The FreeBSD Foundation
MFC after:	1 month
X-Differential revision:	https://reviews.freebsd.org/D7302

Update #3175.
This commit is contained in:
Konstantin Belousov
2016-07-27 11:27:52 +00:00
committed by Sebastian Huber
parent d310aa7c61
commit 6d3c12549f
1 changed files with 12 additions and 23 deletions
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35
cpukit/score/src/kern_tc.c
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@@ -164,34 +164,23 @@ struct timehands {
#if defined(RTEMS_SMP)
static struct timehands th0;
static struct timehands th9 = { NULL, 0, 0, 0, {0, 0}, {0, 0}, {0, 0}, 0, &th0};
static struct timehands th8 = { NULL, 0, 0, 0, {0, 0}, {0, 0}, {0, 0}, 0, &th9};
static struct timehands th7 = { NULL, 0, 0, 0, {0, 0}, {0, 0}, {0, 0}, 0, &th8};
static struct timehands th6 = { NULL, 0, 0, 0, {0, 0}, {0, 0}, {0, 0}, 0, &th7};
static struct timehands th5 = { NULL, 0, 0, 0, {0, 0}, {0, 0}, {0, 0}, 0, &th6};
static struct timehands th4 = { NULL, 0, 0, 0, {0, 0}, {0, 0}, {0, 0}, 0, &th5};
static struct timehands th3 = { NULL, 0, 0, 0, {0, 0}, {0, 0}, {0, 0}, 0, &th4};
static struct timehands th2 = { NULL, 0, 0, 0, {0, 0}, {0, 0}, {0, 0}, 0, &th3};
static struct timehands th1 = { NULL, 0, 0, 0, {0, 0}, {0, 0}, {0, 0}, 0, &th2};
static struct timehands th1 = {
.th_next = &th0
};
#endif
static struct timehands th0 = {
&dummy_timecounter,
0,
(uint64_t)-1 / 1000000,
0,
{1, 0},
#ifndef __rtems__
{0, 0},
{0, 0},
#else /* __rtems__ */
{TOD_SECONDS_1970_THROUGH_1988, 0},
{TOD_SECONDS_1970_THROUGH_1988, 0},
.th_counter = &dummy_timecounter,
.th_scale = (uint64_t)-1 / 1000000,
.th_offset = { .sec = 1 },
.th_generation = 1,
#ifdef __rtems__
.th_microtime = { TOD_SECONDS_1970_THROUGH_1988, 0 },
.th_nanotime = { TOD_SECONDS_1970_THROUGH_1988, 0 },
#endif /* __rtems__ */
1,
#if defined(RTEMS_SMP)
&th1
.th_next = &th1
#else
&th0
.th_next = &th0
#endif
};