[v1] MIPS: Fix idle VS timer enqueue

[PATCH 0/1] MIPS: Fix idle VS timer enqueue

Marco Crivellari posted 1 patch 3 weeks, 5 days ago

Diff against v1 v2 v3 v4 v5
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arch/mips/kernel/genex.S | 36 ++++++++++++++++++++----------------
arch/mips/kernel/idle.c  |  1 -
2 files changed, 20 insertions(+), 17 deletions(-)

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[PATCH 0/1] MIPS: Fix idle VS timer enqueue

Posted by Marco Crivellari 3 weeks, 5 days ago

This patch aims to fix idle routine while the CPU receive an interrupt,
because __r4k_wait() only checks if TIF_NEED_RESCHED is set before 
going to sleep.
The same behavior has been changed in LoongArch [1].

Code (cross) compiled successfully and I manage to test it on a VM
emulating a malta board. I ran QEMU with:

qemu-system-mips64el -M malta -m 2G -kernel vmlinux -serial stdio -drive \
file=rootfs.ext2,format=raw -append "rootwait root=/dev/sda" -cpu 5Kc

rootfs generated using buildroot (malta default configuration).

- [1] https://github.com/chenhuacai/linux/commit/a8aa673ea46c03b3f62992ffa4ffe810ac84f6e3

Marco Crivellari (1):
  MIPS: Fix idle VS timer enqueue

 arch/mips/kernel/genex.S | 36 ++++++++++++++++++++----------------
 arch/mips/kernel/idle.c  |  1 -
 2 files changed, 20 insertions(+), 17 deletions(-)

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2.48.1