[PATCH 01/22] arm64: Make the CPU information more clear

Suzuki K. Poulose suzuki.poulose at arm.com
Wed Sep 16 07:20:59 PDT 2015


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

At early boot, we print the CPU version/revision. On a heterogeneous
system, we could have different types of CPUs. Print the CPU info for
all active cpus.

Also, remove the redundant 'revision' information which doesn't
make any sense without the 'variant' field.

Signed-off-by: Suzuki K. Poulose <suzuki.poulose at arm.com>
---
 arch/arm64/kernel/setup.c |    3 +--
 arch/arm64/kernel/smp.c   |    3 ++-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/arm64/kernel/setup.c b/arch/arm64/kernel/setup.c
index 6bab21f..60fc9a9 100644
--- a/arch/arm64/kernel/setup.c
+++ b/arch/arm64/kernel/setup.c
@@ -202,8 +202,7 @@ static void __init setup_processor(void)
 	u32 cwg;
 	int cls;
 
-	printk("CPU: AArch64 Processor [%08x] revision %d\n",
-	       read_cpuid_id(), read_cpuid_id() & 15);
+	pr_info("Boot CPU: AArch64 Processor [%08x]\n", read_cpuid_id());
 
 	sprintf(init_utsname()->machine, ELF_PLATFORM);
 	elf_hwcap = 0;
diff --git a/arch/arm64/kernel/smp.c b/arch/arm64/kernel/smp.c
index dbdaacd..641f529 100644
--- a/arch/arm64/kernel/smp.c
+++ b/arch/arm64/kernel/smp.c
@@ -145,7 +145,8 @@ asmlinkage void secondary_start_kernel(void)
 	cpumask_set_cpu(cpu, mm_cpumask(mm));
 
 	set_my_cpu_offset(per_cpu_offset(smp_processor_id()));
-	printk("CPU%u: Booted secondary processor\n", cpu);
+	pr_info("CPU%u: Booted secondary processor [%08x]\n",
+					 cpu, read_cpuid_id());
 
 	/*
 	 * TTBR0 is only used for the identity mapping at this stage. Make it
-- 
1.7.9.5




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