Bananymous
49662aa994
Scheduler will now set a timer interrupt deadline for when it should get interrupted next. This fixes a big issue I've had for a long time where sleeping on an idle core would have to wait for the next periodic interrupt to wake up. This could cause 1 ms sleeps to be close to 10 ms. This currently only supports lapic timers and will still fallback to periodic interrupts when running with PIC. I should add deadline support to PIT/HPET but why would you run with APIC disabled ;)
30 lines
399 B
ArmAsm
30 lines
399 B
ArmAsm
.global asm_yield_trampoline
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asm_yield_trampoline:
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leaq 8(%rsp), %rcx
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movq %rdi, %rsp
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subq $8, %rsp
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pushq -8(%rcx)
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pushq %rcx
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pushq %rax
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pushq %rbx
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pushq %rbp
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pushq %r12
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pushq %r13
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pushq %r14
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pushq %r15
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movq %rsp, %rdi
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call scheduler_on_yield_trampoline
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popq %r15
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popq %r14
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popq %r13
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popq %r12
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popq %rbp
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popq %rbx
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popq %rax
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movq 8(%rsp), %rcx
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movq 0(%rsp), %rsp
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jmp *%rcx
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