linux-kernel - [PATCH 21/32] x86: Init softirq enabled field

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Message-Id: <20190212171423.8308-22-frederic@kernel.org>
Date:   Tue, 12 Feb 2019 18:14:12 +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>,
        Mauro Carvalho Chehab <mchehab@...pensource.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        "David S . Miller" <davem@...emloft.net>,
        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 21/32] 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: Mauro Carvalho Chehab <mchehab@...pensource.com>
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/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 59b5f2ea7c2f..b859861733a4 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 39aaf9189226..240419382978 100644
--- a/include/linux/bottom_half.h
+++ b/include/linux/bottom_half.h
@@ -26,6 +26,8 @@ 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
-- 
2.17.1