Vincent Palatin 765386a623 fix task stuck on timer wake-up event ...

When we are in interrupt context and doing a task_set_event,
if we are interrupted by a timer interrupt firing, we might end
resetting the runnable bit added by the expiration of a timer (when
finishing the interrupted read-modify-write to tasks_ready).
So we need to have an atomic access there.

We don't need to atomic primitives (and the associated overhead) on other
tasks_ready accesses because there are always done at the highest
priority.

Signed-off-by: Vincent Palatin <vpalatin@chromium.org>

BUG=chrome-os-partner:8721
TEST=from Linux, run "ectool lightbar test" several times and see that
the keyboard task no longer ends up stuck with a timer event set and no
runnable bit.

Change-Id: Ied45ee33cb6aba4549626d35d694f1c259f2400c

2012-04-12 23:12:42 +00:00

..

include

Sqrt function for Cortex-M

2012-02-16 05:43:29 +08:00

atomic.h

Move SoC-independant headers to another directory

2012-01-26 01:29:48 +00:00

build.mk

FPU control

2012-02-16 05:42:08 +08:00

cpu.h

Support warm reboot from one EC image to another.

2012-03-19 15:41:14 -07:00

ec.lds.S

update versioning information stored in the EC

2012-03-02 16:46:26 +00:00

fpu.c

Change TMP006 temperature calculation to use FP.

2012-02-15 16:34:54 -08:00

init.S

Support warm reboot from one EC image to another.

2012-03-19 15:41:14 -07:00

panic.S

Add configuration parameters for the panic UART code

2012-01-25 22:50:07 +00:00

switch.S

Add a trap for tasks which exit their task functions

2012-03-06 09:52:41 -08:00

task.c

fix task stuck on timer wake-up event

2012-04-12 23:12:42 +00:00

timer.c

Support dynamically changing the system clock

2012-04-09 10:33:35 -07:00