Re: [PATCH net] net: stmmac: use __napi_schedule() for PREEMPT_RT
From: Jakub Kicinski <kuba@kernel.org>
Date: 2021-01-14 01:51:44
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linux-arm-kernel, linux-rt-users, lkml
On Tue, 12 Jan 2021 15:01:22 +0100 Sebastien Laveze wrote:
From: Seb Laveze <redacted>
Use of __napi_schedule_irqoff() is not safe with PREEMPT_RT in which
hard interrupts are not disabled while running the threaded interrupt.
Using __napi_schedule() works for both PREEMPT_RT and mainline Linux,
just at the cost of an additional check if interrupts are disabled for
mainline (since they are already disabled).
Similar to the fix done for enetc:
215602a8d212 ("enetc: use napi_schedule to be compatible with PREEMPT_RT")
Signed-off-by: Seb Laveze <redacted>Fixed up the commit message to appease checkpatch and applied, thanks!