linux-kernel - [PATCH 2/3] MIPS: smp: Remove cpu_callin

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Message-ID: <1478251738-13593-3-git-send-email-matt.redfearn@imgtec.com>
Date:   Fri, 4 Nov 2016 09:28:57 +0000
From:   Matt Redfearn <matt.redfearn@...tec.com>
To:     Ralf Baechle <ralf@...ux-mips.org>, <linux-mips@...ux-mips.org>
CC:     Matt Redfearn <matt.redfearn@...tec.com>,
        Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
        Qais Yousef <qsyousef@...il.com>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Huacai Chen <chenhc@...ote.com>,
        Kevin Cernekee <cernekee@...il.com>,
        <linux-kernel@...r.kernel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Andrew Morton <akpm@...ux-foundation.org>,
        James Hogan <james.hogan@...tec.com>,
        Paul Burton <paul.burton@...tec.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Anna-Maria Gleixner <anna-maria@...utronix.de>,
        Adam Buchbinder <adam.buchbinder@...il.com>,
        Yang Shi <yang.shi@...driver.com>,
        David Daney <david.daney@...ium.com>
Subject: [PATCH 2/3] MIPS: smp: Remove cpu_callin_map

The previous commit made cpu_callin_map redundant, since it is no longer
used to signal secondary CPUs starting, or going offline. Remove it now.

Signed-off-by: Matt Redfearn <matt.redfearn@...tec.com>
---

 arch/mips/cavium-octeon/smp.c         | 1 -
 arch/mips/include/asm/smp.h           | 2 --
 arch/mips/kernel/smp-bmips.c          | 1 -
 arch/mips/kernel/smp-cps.c            | 1 -
 arch/mips/kernel/smp.c                | 2 --
 arch/mips/loongson64/loongson-3/smp.c | 1 -
 6 files changed, 8 deletions(-)

diff --git a/arch/mips/cavium-octeon/smp.c b/arch/mips/cavium-octeon/smp.c
index 256fe6f65cf2..edaf59647da8 100644
--- a/arch/mips/cavium-octeon/smp.c
+++ b/arch/mips/cavium-octeon/smp.c
@@ -272,7 +272,6 @@ static int octeon_cpu_disable(void)
 
 	set_cpu_online(cpu, false);
 	calculate_cpu_foreign_map();
-	cpumask_clear_cpu(cpu, &cpu_callin_map);
 	octeon_fixup_irqs();
 
 	__flush_cache_all();
diff --git a/arch/mips/include/asm/smp.h b/arch/mips/include/asm/smp.h
index 060f23ff1817..f8c5faa93584 100644
--- a/arch/mips/include/asm/smp.h
+++ b/arch/mips/include/asm/smp.h
@@ -46,8 +46,6 @@ extern int __cpu_logical_map[NR_CPUS];
 #define SMP_DUMP		0x8
 #define SMP_ASK_C0COUNT		0x10
 
-extern cpumask_t cpu_callin_map;
-
 /* Mask of CPUs which are currently definitely operating coherently */
 extern cpumask_t cpu_coherent_mask;
 
diff --git a/arch/mips/kernel/smp-bmips.c b/arch/mips/kernel/smp-bmips.c
index 6d0f1321e084..f6700dc2fb09 100644
--- a/arch/mips/kernel/smp-bmips.c
+++ b/arch/mips/kernel/smp-bmips.c
@@ -364,7 +364,6 @@ static int bmips_cpu_disable(void)
 
 	set_cpu_online(cpu, false);
 	calculate_cpu_foreign_map();
-	cpumask_clear_cpu(cpu, &cpu_callin_map);
 	clear_c0_status(IE_IRQ5);
 
 	local_flush_tlb_all();
diff --git a/arch/mips/kernel/smp-cps.c b/arch/mips/kernel/smp-cps.c
index 6183ad84cc73..44339b470ef4 100644
--- a/arch/mips/kernel/smp-cps.c
+++ b/arch/mips/kernel/smp-cps.c
@@ -399,7 +399,6 @@ static int cps_cpu_disable(void)
 	smp_mb__after_atomic();
 	set_cpu_online(cpu, false);
 	calculate_cpu_foreign_map();
-	cpumask_clear_cpu(cpu, &cpu_callin_map);
 
 	return 0;
 }
diff --git a/arch/mips/kernel/smp.c b/arch/mips/kernel/smp.c
index 03daf9008124..0a831f63b0ec 100644
--- a/arch/mips/kernel/smp.c
+++ b/arch/mips/kernel/smp.c
@@ -48,8 +48,6 @@
 #include <asm/setup.h>
 #include <asm/maar.h>
 
-cpumask_t cpu_callin_map;		/* Bitmask of started secondaries */
-
 int __cpu_number_map[NR_CPUS];		/* Map physical to logical */
 EXPORT_SYMBOL(__cpu_number_map);
 
diff --git a/arch/mips/loongson64/loongson-3/smp.c b/arch/mips/loongson64/loongson-3/smp.c
index 99aab9f85904..cfcf240cedbe 100644
--- a/arch/mips/loongson64/loongson-3/smp.c
+++ b/arch/mips/loongson64/loongson-3/smp.c
@@ -418,7 +418,6 @@ static int loongson3_cpu_disable(void)
 
 	set_cpu_online(cpu, false);
 	calculate_cpu_foreign_map();
-	cpumask_clear_cpu(cpu, &cpu_callin_map);
 	local_irq_save(flags);
 	fixup_irqs();
 	local_irq_restore(flags);
-- 
2.7.4