在 2024/10/1 22:29, Oleg Nesterov 写道: > On 09/27, Liao Chang wrote: >> >> The uprobe handler allocates xol slot from xol_area and quickly release >> it in the single-step handler. The atomic operations on the xol bitmap >> and slot_count lead to expensive cache line bouncing between multiple >> CPUs. > > Liao, could you please check if this series > > [PATCH 0/2] uprobes: kill xol_area->slot_count > https://lore.kernel.org/all/20241001142416.GA13599@xxxxxxxxxx/ > > makes any difference performance-wise in your testing? OK, I am ready to test this patch on my arm64 machine. > > Oleg. > > -- BR Liao, Chang
