linux-kernel - [PATCH 18/37] softirq: Normalize softirq

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Message-Id: <20190228171242.32144-19-frederic@kernel.org>
Date:   Thu, 28 Feb 2019 18:12:23 +0100
From:   Frederic Weisbecker <frederic@...nel.org>
To:     LKML <linux-kernel@...r.kernel.org>
Cc:     Frederic Weisbecker <fweisbec@...il.com>,
        Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
        Peter Zijlstra <peterz@...radead.org>,
        "David S . Miller" <davem@...emloft.net>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Mauro Carvalho Chehab <mchehab+samsung@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        "Paul E . McKenney" <paulmck@...ux.vnet.ibm.com>,
        Frederic Weisbecker <frederic@...nel.org>,
        Pavan Kondeti <pkondeti@...eaurora.org>,
        Ingo Molnar <mingo@...nel.org>,
        Joel Fernandes <joel@...lfernandes.org>
Subject: [PATCH 18/37] softirq: Normalize softirq_pending naming scheme

From: Frederic Weisbecker <fweisbec@...il.com>

Use the subsystem as the prefix to name the __softirq_data accessors.
They are going to be extended and want a more greppable and standard
naming sheme.

Reviewed-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Frederic Weisbecker <fweisbec@...il.com>
Cc: Mauro Carvalho Chehab <mchehab+samsung@...nel.org>
Cc: Joel Fernandes <joel@...lfernandes.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Pavan Kondeti <pkondeti@...eaurora.org>
Cc: Paul E . McKenney <paulmck@...ux.vnet.ibm.com>
Cc: David S . Miller <davem@...emloft.net>
Cc: Ingo Molnar <mingo@...nel.org>
Cc: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Peter Zijlstra <peterz@...radead.org>
---
 arch/s390/include/asm/hardirq.h |  4 ++--
 include/linux/interrupt.h       | 24 ++++++++++++------------
 kernel/softirq.c                |  4 ++--
 3 files changed, 16 insertions(+), 16 deletions(-)

diff --git a/arch/s390/include/asm/hardirq.h b/arch/s390/include/asm/hardirq.h
index e26325fe287d..3103680487cf 100644
--- a/arch/s390/include/asm/hardirq.h
+++ b/arch/s390/include/asm/hardirq.h
@@ -14,8 +14,8 @@
 #include <asm/lowcore.h>
 
 #define local_softirq_pending() (S390_lowcore.softirq_data)
-#define set_softirq_pending(x) (S390_lowcore.softirq_data = (x))
-#define or_softirq_pending(x)  (S390_lowcore.softirq_data |= (x))
+#define softirq_pending_set(x) (S390_lowcore.softirq_data = (x))
+#define softirq_pending_or(x)  (S390_lowcore.softirq_data |= (x))
 
 #define __ARCH_IRQ_STAT
 #define __ARCH_HAS_DO_SOFTIRQ
diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h
index a32bdd9bb103..a5dec926531b 100644
--- a/include/linux/interrupt.h
+++ b/include/linux/interrupt.h
@@ -447,18 +447,6 @@ extern bool force_irqthreads;
 #define force_irqthreads	(0)
 #endif
 
-#ifndef local_softirq_pending
-
-#ifndef local_softirq_data_ref
-#define local_softirq_data_ref irq_stat.__softirq_data
-#endif
-
-#define local_softirq_pending()	(__this_cpu_read(local_softirq_data_ref))
-#define set_softirq_pending(x)	(__this_cpu_write(local_softirq_data_ref, (x)))
-#define or_softirq_pending(x)	(__this_cpu_or(local_softirq_data_ref, (x)))
-
-#endif /* local_softirq_pending */
-
 /* Some architectures might implement lazy enabling/disabling of
  * interrupts. In some cases, such as stop_machine, we might want
  * to ensure that after a local_irq_disable(), interrupts have
@@ -485,6 +473,18 @@ enum
 
 #define SOFTIRQ_STOP_IDLE_MASK (~(1 << RCU_SOFTIRQ))
 
+#ifndef local_softirq_pending
+
+#ifndef local_softirq_data_ref
+#define local_softirq_data_ref irq_stat.__softirq_data
+#endif
+
+#define local_softirq_pending()	(__this_cpu_read(local_softirq_data_ref))
+#define softirq_pending_set(x)	(__this_cpu_write(local_softirq_data_ref, (x)))
+#define softirq_pending_or(x)	(__this_cpu_or(local_softirq_data_ref, (x)))
+
+#endif /* local_softirq_pending */
+
 /* map softirq index to softirq name. update 'softirq_to_name' in
  * kernel/softirq.c when adding a new softirq.
  */
diff --git a/kernel/softirq.c b/kernel/softirq.c
index 2dcaef813acb..2137c54baf98 100644
--- a/kernel/softirq.c
+++ b/kernel/softirq.c
@@ -268,7 +268,7 @@ asmlinkage __visible void __softirq_entry __do_softirq(void)
 
 restart:
 	/* Reset the pending bitmask before enabling irqs */
-	set_softirq_pending(0);
+	softirq_pending_set(0);
 
 	local_irq_enable();
 
@@ -449,7 +449,7 @@ void raise_softirq(unsigned int nr)
 void __raise_softirq_irqoff(unsigned int nr)
 {
 	trace_softirq_raise(nr);
-	or_softirq_pending(1UL << nr);
+	softirq_pending_or(1UL << nr);
 }
 
 void open_softirq(int nr, void (*action)(struct softirq_action *))
-- 
2.21.0