>Intro SOFTIRQ delay, so we can separate softirq as SOFTIRQ delay >and hardirq as {IRQ - SOFTIRQ} delay. > >A typical scenario is when tasks delayed by network, >if they delayed by rx net packets, i.e, net_rx_action(), >SOFTIRQ delay is almost same as IRQ delay; >if they delayed by, e.g, bad driver or broken hardware, >SOFTIRQ delay is almost 0 while IRQ delay remains big. > >Examples tool usage could be found in >Documentation/accounting/delay-accounting.rst > >Signed-off-by: Tio Zhang <tiozhang@xxxxxxxxxxxxxx> >--- a small suggestion: it would be clearer if you could include a changelog when sending a new version of the patch next time. For example: https://lore.kernel.org/all/20250828171242.59810-1-sj@xxxxxxxxxx/ Thanks Yaxin