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Message-Id: <20240609072022.2997-1-yajun.deng@linux.dev>
Date: Sun, 9 Jun 2024 15:20:22 +0800
From: Yajun Deng <yajun.deng@...ux.dev>
To: davem@...emloft.net,
edumazet@...gle.com,
kuba@...nel.org,
pabeni@...hat.com
Cc: bigeasy@...utronix.de,
netdev@...r.kernel.org,
linux-kernel@...r.kernel.org,
Yajun Deng <yajun.deng@...ux.dev>
Subject: [PATCH net-next] net: dev: Simplify the conditional of backlog lock functions
The use_backlog_threads() contains the conditional of PREEMPT_RT, so we
don't need to add PREEMPT_RT in the backlog lock.
Remove the conditional of PREEMPT_RT in the backlog lock.
Signed-off-by: Yajun Deng <yajun.deng@...ux.dev>
---
net/core/dev.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/net/core/dev.c b/net/core/dev.c
index e62698c7a0e6..db6b6fc997e6 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -229,7 +229,7 @@ static inline void backlog_lock_irq_save(struct softnet_data *sd,
{
if (IS_ENABLED(CONFIG_RPS) || use_backlog_threads())
spin_lock_irqsave(&sd->input_pkt_queue.lock, *flags);
- else if (!IS_ENABLED(CONFIG_PREEMPT_RT))
+ else
local_irq_save(*flags);
}
@@ -237,7 +237,7 @@ static inline void backlog_lock_irq_disable(struct softnet_data *sd)
{
if (IS_ENABLED(CONFIG_RPS) || use_backlog_threads())
spin_lock_irq(&sd->input_pkt_queue.lock);
- else if (!IS_ENABLED(CONFIG_PREEMPT_RT))
+ else
local_irq_disable();
}
@@ -246,7 +246,7 @@ static inline void backlog_unlock_irq_restore(struct softnet_data *sd,
{
if (IS_ENABLED(CONFIG_RPS) || use_backlog_threads())
spin_unlock_irqrestore(&sd->input_pkt_queue.lock, *flags);
- else if (!IS_ENABLED(CONFIG_PREEMPT_RT))
+ else
local_irq_restore(*flags);
}
@@ -254,7 +254,7 @@ static inline void backlog_unlock_irq_enable(struct softnet_data *sd)
{
if (IS_ENABLED(CONFIG_RPS) || use_backlog_threads())
spin_unlock_irq(&sd->input_pkt_queue.lock);
- else if (!IS_ENABLED(CONFIG_PREEMPT_RT))
+ else
local_irq_enable();
}
--
2.34.1
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