From 7c1c4e541888947947bc46a18a9a5543a259ed62 Mon Sep 17 00:00:00 2001 From: Hirokazu Takata Date: Mon, 10 Apr 2006 22:53:18 -0700 Subject: [PATCH] m32r: Fix cpu_possible_map and cpu_present_map initialization for SMP kernel This patch fixes a boot problem of the m32r SMP kernel 2.6.16-rc1-mm3 or later. In this patch, cpu_possible_map is statically initialized, and cpu_present_map is also copied from cpu_possible_map in smp_prepare_cpus(), because the m32r architecture has not supported CPU hotplug yet. Signed-off-by: Hayato Fujiwara Signed-off-by: Hirokazu Takata Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/m32r/kernel/smpboot.c | 19 ++++++++++--------- 1 file changed, 10 insertions(+), 9 deletions(-) (limited to 'arch/m32r/kernel/smpboot.c') diff --git a/arch/m32r/kernel/smpboot.c b/arch/m32r/kernel/smpboot.c index d7ec16e7fb25..840b4348bf0c 100644 --- a/arch/m32r/kernel/smpboot.c +++ b/arch/m32r/kernel/smpboot.c @@ -39,8 +39,10 @@ * Martin J. Bligh : Added support for multi-quad systems */ +#include #include #include +#include #include #include #include @@ -72,11 +74,15 @@ physid_mask_t phys_cpu_present_map; /* Bitmask of currently online CPUs */ cpumask_t cpu_online_map; +EXPORT_SYMBOL(cpu_online_map); cpumask_t cpu_bootout_map; cpumask_t cpu_bootin_map; -cpumask_t cpu_callout_map; static cpumask_t cpu_callin_map; +cpumask_t cpu_callout_map; +EXPORT_SYMBOL(cpu_callout_map); +cpumask_t cpu_possible_map = CPU_MASK_ALL; +EXPORT_SYMBOL(cpu_possible_map); /* Per CPU bogomips and other parameters */ struct cpuinfo_m32r cpu_data[NR_CPUS] __cacheline_aligned; @@ -110,7 +116,6 @@ static unsigned int calibration_result; void smp_prepare_boot_cpu(void); void smp_prepare_cpus(unsigned int); -static void smp_tune_scheduling(void); static void init_ipi_lock(void); static void do_boot_cpu(int); int __cpu_up(unsigned int); @@ -177,6 +182,9 @@ void __init smp_prepare_cpus(unsigned int max_cpus) } for (phys_id = 0 ; phys_id < nr_cpu ; phys_id++) physid_set(phys_id, phys_cpu_present_map); +#ifndef CONFIG_HOTPLUG_CPU + cpu_present_map = cpu_possible_map; +#endif show_mp_info(nr_cpu); @@ -186,7 +194,6 @@ void __init smp_prepare_cpus(unsigned int max_cpus) * Setup boot CPU information */ smp_store_cpu_info(0); /* Final full version of the data */ - smp_tune_scheduling(); /* * If SMP should be disabled, then really disable it! @@ -230,11 +237,6 @@ smp_done: Dprintk("Boot done.\n"); } -static void __init smp_tune_scheduling(void) -{ - /* Nothing to do. */ -} - /* * init_ipi_lock : Initialize IPI locks. */ @@ -629,4 +631,3 @@ static void __init unmap_cpu_to_physid(int cpu_id, int phys_id) physid_2_cpu[phys_id] = -1; cpu_2_physid[cpu_id] = -1; } - -- cgit v1.2.1