Commit 748b4428 authored by Heiner Kallweit's avatar Heiner Kallweit Committed by Jakub Kicinski
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net: don't set sw irq coalescing defaults in case of PREEMPT_RT 



If PREEMPT_RT is set, then assume that the user focuses on minimum
latency. Therefore don't set sw irq coalescing defaults.
This affects the defaults only, users can override these settings
via sysfs.

Signed-off-by: default avatarHeiner Kallweit <hkallweit1@gmail.com>
Link: https://lore.kernel.org/r/f9439c7f-c92c-4c2c-703e-110f96d841b7@gmail.com


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent 60cbd38b

net/core/dev.c

+4 −2
Original line number Diff line number Diff line
@@ -10571,9 +10571,11 @@ void netdev_sw_irq_coalesce_default_on(struct net_device *dev) 
{

	WARN_ON(dev->reg_state == NETREG_REGISTERED);



	if (!IS_ENABLED(CONFIG_PREEMPT_RT)) {

		dev->gro_flush_timeout = 20000;

		dev->napi_defer_hard_irqs = 1;

	}

}

EXPORT_SYMBOL_GPL(netdev_sw_irq_coalesce_default_on);



void netdev_freemem(struct net_device *dev)