Am Samstag, 30. April 2022, 17:36:24 CEST schrieb Palmer Dabbelt: > From: Palmer Dabbelt <palmer@xxxxxxxxxxxx> > > Our existing spinlocks aren't fair and replacing them has been on the > TODO list for a long time. This moves to the recently-introduced ticket > spinlocks, which are simple enough that they are likely to be correct > and fast on the vast majority of extant implementations. > > This introduces a horrible hack that allows us to split out the spinlock > conversion from the rwlock conversion. We have to do the spinlocks > first because qrwlock needs fair spinlocks, but we don't want to pollute > the asm-generic code to support the generic spinlocks without qrwlocks. > Thus we pollute the RISC-V code, but just until the next commit as it's > all going away. > > Signed-off-by: Palmer Dabbelt <palmer@xxxxxxxxxxxx> on riscv64+riscv32 qemu, beaglev and d1-nezha Tested-by: Heiko Stuebner <heiko@xxxxxxxxx>
