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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: Heiner Kallweit <hkallweit1@gmail.com> Link: https://lore.kernel.org/r/f9439c7f-c92c-4c2c-703e-110f96d841b7@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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1 changed files with 4 additions and 2 deletions
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@ -10571,8 +10571,10 @@ void netdev_sw_irq_coalesce_default_on(struct net_device *dev)
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{
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WARN_ON(dev->reg_state == NETREG_REGISTERED);
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dev->gro_flush_timeout = 20000;
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dev->napi_defer_hard_irqs = 1;
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if (!IS_ENABLED(CONFIG_PREEMPT_RT)) {
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dev->gro_flush_timeout = 20000;
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dev->napi_defer_hard_irqs = 1;
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}
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}
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EXPORT_SYMBOL_GPL(netdev_sw_irq_coalesce_default_on);
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