[PATCH ARM64 v4.4 V3 16/44] arm64: Move cpu_die_early to smp.c

From: Viresh Kumar <viresh.kumar@linaro.org>
To: stable@vger.kernel.org, Julien Thierry <Julien.Thierry@arm.com>,
	Mark Rutland <mark.rutland@arm.com>
Cc: Viresh Kumar <viresh.kumar@linaro.org>,
	linux-arm-kernel@lists.infradead.org,
	Catalin Marinas <catalin.marinas@arm.com>,
	Marc Zyngier <marc.zyngier@arm.com>,
	Will Deacon <will.deacon@arm.com>,
	Russell King <rmk+kernel@arm.linux.org.uk>,
	Vincent Guittot <vincent.guittot@linaro.org>,
	mark.brown@arm.com
Subject: [PATCH ARM64 v4.4 V3 16/44] arm64: Move cpu_die_early to smp.c
Date: Thu, 29 Aug 2019 17:04:01 +0530	[thread overview]
Message-ID: <59d2f5d6f0d1e777646712b74e542fdf160c953f.1567077734.git.viresh.kumar@linaro.org> (raw)
In-Reply-To: <cover.1567077734.git.viresh.kumar@linaro.org>

From: Suzuki K Poulose <suzuki.poulose@arm.com>

Commit fce6361fe9b0caeba0c05b7d72ceda406f8780df upstream.

This patch moves cpu_die_early to smp.c, where it fits better.
No functional changes, except for adding the necessary checks
for CONFIG_HOTPLUG_CPU.

Cc: Mark Rutland <mark.rutland@arm.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
---
 arch/arm64/include/asm/smp.h   |  1 +
 arch/arm64/kernel/cpufeature.c | 19 -------------------
 arch/arm64/kernel/smp.c        | 22 ++++++++++++++++++++++
 3 files changed, 23 insertions(+), 19 deletions(-)

diff --git a/arch/arm64/include/asm/smp.h b/arch/arm64/include/asm/smp.h
index 53b53a9b3e5a..32e75ee21d5e 100644
--- a/arch/arm64/include/asm/smp.h
+++ b/arch/arm64/include/asm/smp.h
@@ -68,6 +68,7 @@ extern int __cpu_disable(void);
 
 extern void __cpu_die(unsigned int cpu);
 extern void cpu_die(void);
+extern void cpu_die_early(void);
 
 static inline void cpu_park_loop(void)
 {
diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c
index 4adf18307568..a0273cd8be51 100644
--- a/arch/arm64/kernel/cpufeature.c
+++ b/arch/arm64/kernel/cpufeature.c
@@ -852,25 +852,6 @@ static inline void set_sys_caps_initialised(void)
 	sys_caps_initialised = true;
 }
 
-/*
- * Kill the calling secondary CPU, early in bringup before it is turned
- * online.
- */
-void cpu_die_early(void)
-{
-	int cpu = smp_processor_id();
-
-	pr_crit("CPU%d: will not boot\n", cpu);
-
-	/* Mark this CPU absent */
-	set_cpu_present(cpu, 0);
-
-	/* Check if we can park ourselves */
-	if (cpu_ops[cpu] && cpu_ops[cpu]->cpu_die)
-		cpu_ops[cpu]->cpu_die(cpu);
-	cpu_park_loop();
-}
-
 /*
  * Run through the enabled system capabilities and enable() it on this CPU.
  * The capabilities were decided based on the available CPUs at the boot time.
diff --git a/arch/arm64/kernel/smp.c b/arch/arm64/kernel/smp.c
index 03c0946b79d2..23e8ae0c6305 100644
--- a/arch/arm64/kernel/smp.c
+++ b/arch/arm64/kernel/smp.c
@@ -312,6 +312,28 @@ void cpu_die(void)
 }
 #endif
 
+/*
+ * Kill the calling secondary CPU, early in bringup before it is turned
+ * online.
+ */
+void cpu_die_early(void)
+{
+	int cpu = smp_processor_id();
+
+	pr_crit("CPU%d: will not boot\n", cpu);
+
+	/* Mark this CPU absent */
+	set_cpu_present(cpu, 0);
+
+#ifdef CONFIG_HOTPLUG_CPU
+	/* Check if we can park ourselves */
+	if (cpu_ops[cpu] && cpu_ops[cpu]->cpu_die)
+		cpu_ops[cpu]->cpu_die(cpu);
+#endif
+
+	cpu_park_loop();
+}
+
 static void __init hyp_mode_check(void)
 {
 	if (is_hyp_mode_available())
-- 
2.21.0.rc0.269.g1a574e7a288b

