Re: [PATCH v4 2/2] soc: fsl: qbman: Use raw spinlock for cgr_lock

2024-01-23 Thread Sean Anderson
On 1/8/24 11:19, Sean Anderson wrote: > cgr_lock may be locked with interrupts already disabled by > smp_call_function_single. As such, we must use a raw spinlock to avoid > problems on PREEMPT_RT kernels. Although this bug has existed for a > while, it was not apparent until commit ef2a8d5478b9 ("

[PATCH v4 2/2] soc: fsl: qbman: Use raw spinlock for cgr_lock

2024-01-08 Thread Sean Anderson
cgr_lock may be locked with interrupts already disabled by smp_call_function_single. As such, we must use a raw spinlock to avoid problems on PREEMPT_RT kernels. Although this bug has existed for a while, it was not apparent until commit ef2a8d5478b9 ("net: dpaa: Adjust queue depth on rate change")