diff options
Diffstat (limited to 'os/kernel/src/chschd.c')
| -rw-r--r-- | os/kernel/src/chschd.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/os/kernel/src/chschd.c b/os/kernel/src/chschd.c index 7ab32f068..093a1a0c0 100644 --- a/os/kernel/src/chschd.c +++ b/os/kernel/src/chschd.c @@ -162,6 +162,7 @@ msg_t chSchGoSleepTimeoutS(tstate_t newstate, systime_t time) { * @param[in] msg message to the awakened thread * @note It is equivalent to a @p chSchReadyI() followed by a * @p chSchRescheduleS() but much more efficient. + * @note The function assumes that the current thread has the highest priority */ void chSchWakeupS(Thread *ntp, msg_t msg) { @@ -175,10 +176,17 @@ void chSchWakeupS(Thread *ntp, msg_t msg) { else { Thread *otp = currp; chSchReadyI(otp); - (currp = ntp)->p_state = PRCURR; #if CH_USE_ROUNDROBIN rlist.r_preempt = CH_TIME_QUANTUM; #endif +#if 0 + /* Shortcut for when the round robin scheduling is not enabled.*/ + otp->p_state = PRREADY; + /* Direct insertion on top of the ready list, no scanning.*/ + otp->p_next = rlist.r_queue.p_next->p_next; + otp->p_next->p_prev = rlist.r_queue.p_next = otp; +#endif + (currp = ntp)->p_state = PRCURR; chDbgTrace(otp, ntp); chSysSwitchI(otp, ntp); } |