RGBCube/serenity
1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-07-29 01:27:44 +00:00
Code Issues Activity Actions

Kernel: Use Processor::wait_check in loops waiting for HW to respond

Browse source 
This gives the processor the hint that it is in a hot loop and allows us
to do other work in between
This commit is contained in:
Hendiadyoin1 2023-09-12 14:58:55 +02:00 • committed by Andrew Kaster
parent cbaa3465a8
commit a2810d3cf8
9 changed files with 31 additions and 36 deletions
Download patch file Download diff file Expand all files Collapse all files

4
Kernel/Arch/aarch64/RPi/UART.cpp
View file

@ -160,13 +160,13 @@ void UART::set_baud_rate(int baud_rate, int uart_frequency_in_hz)
void UART::wait_until_we_can_send()
{
while (m_registers->flag & TransmitFifoFull)
;
Processor::wait_check();
}
void UART::wait_until_we_can_receive()
{
while (m_registers->flag & ReceiveFifoEmpty)
;
Processor::wait_check();
}
}