Changeset aae2869 in mainline for kernel/generic/src/proc

Timestamp:

2023-02-04T16:19:21Z (3 years ago)

Author:

Jiří Zárevúcky <zarevucky.jiri@…>

Branches:

master, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

011c79a

Parents:

8addb24a

git-author:

Jiří Zárevúcky <zarevucky.jiri@…> (2022-08-16 11:03:29)

git-committer:

Jiří Zárevúcky <zarevucky.jiri@…> (2023-02-04 16:19:21)

Message:

Replace THREAD→ticks with CPU→preempt_deadline

This removes a bit of unnecessary locking in clock().

Location:

kernel/generic/src/proc

Files:

• scheduler.c (modified) (1 diff)
• thread.c (modified) (1 diff)

kernel/generic/src/proc/scheduler.c

@@ -236 +236 @@
 
                 thread->cpu = CPU;
-                thread->ticks = us2ticks((i + 1) * 10000);
                 thread->priority = i;  /* Correct rq index */
+
+                /* Time allocation in microseconds. */
+                uint64_t time_to_run = (i + 1) * 10000;
+
+                /* This is safe because interrupts are disabled. */
+                CPU->preempt_deadline = CPU->current_clock_tick + us2ticks(time_to_run);
 
                 /*

kernel/generic/src/proc/thread.c

@@ -372 +372 @@
         thread->thread_code = func;
         thread->thread_arg = arg;
-        thread->ticks = -1;
         thread->ucycles = 0;
         thread->kcycles = 0;