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Date: Thu, 11 Oct 2018 01:11:56 +0200
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>,
Thomas Gleixner <tglx@...utronix.de>,
Frederic Weisbecker <frederic@...nel.org>,
"Paul E . McKenney" <paulmck@...ux.vnet.ibm.com>,
Ingo Molnar <mingo@...nel.org>,
Mauro Carvalho Chehab <mchehab@...pensource.com>
Subject: [RFC PATCH 09/30] x86: Init softirq enabled field
From: Frederic Weisbecker <fweisbec@...il.com>
All softirqs must be set enabled on boot.
Signed-off-by: Frederic Weisbecker <fweisbec@...il.com>
Cc: Ingo Molnar <mingo@...nel.org>
Cc: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: David S. Miller <davem@...emloft.net>
Cc: Mauro Carvalho Chehab <mchehab@...pensource.com>
Cc: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>
---
arch/x86/kernel/irq.c | 5 ++++-
include/linux/bottom_half.h | 2 ++
2 files changed, 6 insertions(+), 1 deletion(-)
diff --git a/arch/x86/kernel/irq.c b/arch/x86/kernel/irq.c
index 59b5f2e..b859861 100644
--- a/arch/x86/kernel/irq.c
+++ b/arch/x86/kernel/irq.c
@@ -11,6 +11,7 @@
#include <linux/delay.h>
#include <linux/export.h>
#include <linux/irq.h>
+#include <linux/bottom_half.h>
#include <asm/apic.h>
#include <asm/io_apic.h>
@@ -22,7 +23,9 @@
#define CREATE_TRACE_POINTS
#include <asm/trace/irq_vectors.h>
-DEFINE_PER_CPU_SHARED_ALIGNED(irq_cpustat_t, irq_stat);
+DEFINE_PER_CPU_SHARED_ALIGNED(irq_cpustat_t, irq_stat) = {
+ .__softirq_data = SOFTIRQ_DATA_INIT,
+};
EXPORT_PER_CPU_SYMBOL(irq_stat);
DEFINE_PER_CPU(struct pt_regs *, irq_regs);
diff --git a/include/linux/bottom_half.h b/include/linux/bottom_half.h
index a9571ad..fd75d1a 100644
--- a/include/linux/bottom_half.h
+++ b/include/linux/bottom_half.h
@@ -33,6 +33,8 @@ enum
#define SOFTIRQ_ENABLED_SHIFT 16
#define SOFTIRQ_PENDING_MASK (BIT(SOFTIRQ_ENABLED_SHIFT) - 1)
+#define SOFTIRQ_DATA_INIT (SOFTIRQ_ALL_MASK << SOFTIRQ_ENABLED_SHIFT)
+
#ifdef CONFIG_TRACE_IRQFLAGS
extern void __local_bh_disable_ip(unsigned long ip, unsigned int cnt);
--
2.7.4
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