voron

experimental ARM OS
git clone git://git.2f30.org/voron.git
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commit 6443fb79dc04843ae686429d8d76080ae1a3fc1f
parent 1317589dcb0098cc27b7bbbbc5e6ffbe74cffcf1
Author: oblique <psyberbits@gmail.com>
Date:   Mon Nov  5 17:57:05 +0200

disable irqs before we change the state of 'current'

Diffstat:
kernel/sched.c | 9++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/kernel/sched.c b/kernel/sched.c @@ -190,10 +190,11 @@ sched(struct regs *regs) void suspend_task(u32 channel) { + irq_disable(); current->sleep_chan = channel; current->sleep_reason = SLEEPR_SUSPEND; - dmb(); current->state = TASK_SLEEPING; + irq_enable(); schedule(); } @@ -220,10 +221,11 @@ resume_tasks(u32 channel) void sleep(u32 seconds) { + irq_disable(); current->wakeup_ms = uatomic_read(&ms_counter) + seconds * 1000; current->sleep_reason = SLEEPR_SLEEP; - dmb(); current->state = TASK_SLEEPING; + irq_enable(); /* force schedule */ schedule(); } @@ -231,14 +233,15 @@ sleep(u32 seconds) void msleep(u32 milliseconds) { + irq_disable(); /* TODO: if ms is smaller than SCHED_INT_MS * do a loop and don't schedule */ if (milliseconds < SCHED_INT_MS) milliseconds = SCHED_INT_MS; current->wakeup_ms = uatomic_read(&ms_counter) + milliseconds; current->sleep_reason = SLEEPR_SLEEP; - dmb(); current->state = TASK_SLEEPING; + irq_enable(); /* force schedule */ schedule(); }