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| author | Randall Spangler <rspangler@chromium.org> | 2012-10-30 09:42:58 -0700 |
|---|---|---|
| committer | Gerrit <chrome-bot@google.com> | 2012-10-30 12:42:40 -0700 |
| commit | 4a0b4262d395ec2c46809e1584b2109f3a3d872e (patch) | |
| tree | 3514f309c3b267a8c844d05324dc1b41058ad3c2 /common | |
| parent | c795ea69ff4930d90e3d0cbdc9a10332e34be2bb (diff) | |
| download | chrome-ec-4a0b4262d395ec2c46809e1584b2109f3a3d872e.tar.gz | |
Add tick task
Adds a new HOOK_TICK event which is called every 250ms (LM4) or 500ms
(STM32). This will be used to consolidate a number of tasks which do
small amounts of work infrequently, and previously needed their own
task functions.
This CL adds the tick task; subsequent CLs will consolidate watchdog
and other tasks into tick hooks.
BUG=chrome-os-partner:15714
BRANCH=none
TEST=taskinfo shows TICK task as lowest priority
Change-Id: I9068ee99d56a5bf5c12afd86ad51998c013f4954
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/36908
Reviewed-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'common')
| -rw-r--r-- | common/hooks.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/common/hooks.c b/common/hooks.c index 81d84b3d00..385f0e0478 100644 --- a/common/hooks.c +++ b/common/hooks.c @@ -7,6 +7,7 @@ #include "hooks.h" #include "link_defs.h" +#include "timer.h" #include "util.h" struct hook_ptrs { @@ -29,6 +30,7 @@ static const struct hook_ptrs hook_list[] = { {__hooks_chipset_shutdown, __hooks_chipset_shutdown_end}, {__hooks_ac_change, __hooks_ac_change_end}, {__hooks_lid_change, __hooks_lid_change_end}, + {__hooks_tick, __hooks_tick_end}, }; void hook_notify(enum hook_type type) @@ -59,3 +61,17 @@ void hook_notify(enum hook_type type) } } } + +void hook_task(void) +{ + while (1) { + uint64_t t = get_time().val; + + hook_notify(HOOK_TICK); + + /* Use up the rest of our hook tick interval */ + t = get_time().val - t; + if (t < HOOK_TICK_INTERVAL) + usleep(HOOK_TICK_INTERVAL - t); + } +} |