diff options
| author | Ada Christine <adachristine18@gmail.com> | 2022-02-17 13:54:46 +0000 |
|---|---|---|
| committer | Ada Christine <adachristine18@gmail.com> | 2022-02-17 13:54:46 +0000 |
| commit | 0d1bf5ee926d74b66b6e891fb65816621c51824a (patch) | |
| tree | c5ccbd9d65f07e80bc6d14c3107e797d28799428 /kc | |
| parent | 9b63c0000b2e0d9d0a306e56dbc7bc28403e5549 (diff) | |
force 8253 timer to minimum frequency, log timesource delta at task management start
Diffstat (limited to 'kc')
| -rw-r--r-- | kc/core/kc_main.c | 1 | ||||
| -rw-r--r-- | kc/core/task.c | 3 |
2 files changed, 4 insertions, 0 deletions
diff --git a/kc/core/kc_main.c b/kc/core/kc_main.c index 1136e0a..de5f3fe 100644 --- a/kc/core/kc_main.c +++ b/kc/core/kc_main.c @@ -29,6 +29,7 @@ unsigned long kc_main(struct kc_boot_data *data) memory_init(); pic8259_init(); pit8253_timer_source.init(); + pit8253_timer_source.set_frequency(1); task_init(); return 0; diff --git a/kc/core/task.c b/kc/core/task.c index 13263d8..f24850c 100644 --- a/kc/core/task.c +++ b/kc/core/task.c @@ -130,6 +130,9 @@ noreturn void task_init(void) lock_scheduler(); timesource = &pit8253_timer_source; timesource->start(); + kprintf( + "starting task management, timesource delta %luns\n", + timesource->nanoseconds_delta()); char *kernel_rsp0 = vm_alloc(4096); // TODO: make it so this isn't demand-allocated. // TODO: decouple the task management code from cpu-dependent task code |