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authorDavid S. Miller <davem@davemloft.net>2008-09-16 14:44:00 -0400
committerDavid S. Miller <davem@davemloft.net>2008-09-16 14:44:00 -0400
commit9843099ff46467461d6476a827f6f9701682dbac (patch)
tree989c39138718d8ea005a8fcf9651da19a2f270a8 /arch/sparc64/kernel/irq.c
parentf948cc6ab9e61a8e88d70ee9aafc690e6d26f92c (diff)
sparc64: Fix SMP bootup with CONFIG_STACK_DEBUG or ftrace.
Based upon a report by Meelis Roos. Any function call can try to access the current thread register via the _mcount hooks when the kernel is built with -pg (via ftrace or STACK_DEBUG). That can't be setup properly very early on during the bootup of other cpus for sun4u and some early sun4v systems. So add notrace markers to these specific functions, so that _mcount doesn't get invoked too early. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc64/kernel/irq.c')
-rw-r--r--arch/sparc64/kernel/irq.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/arch/sparc64/kernel/irq.c b/arch/sparc64/kernel/irq.c
index 23963882bc18..7495bc774685 100644
--- a/arch/sparc64/kernel/irq.c
+++ b/arch/sparc64/kernel/irq.c
@@ -7,6 +7,7 @@
7 7
8#include <linux/module.h> 8#include <linux/module.h>
9#include <linux/sched.h> 9#include <linux/sched.h>
10#include <linux/linkage.h>
10#include <linux/ptrace.h> 11#include <linux/ptrace.h>
11#include <linux/errno.h> 12#include <linux/errno.h>
12#include <linux/kernel_stat.h> 13#include <linux/kernel_stat.h>
@@ -866,7 +867,7 @@ static void kill_prom_timer(void)
866 : "g1", "g2"); 867 : "g1", "g2");
867} 868}
868 869
869void init_irqwork_curcpu(void) 870void notrace init_irqwork_curcpu(void)
870{ 871{
871 int cpu = hard_smp_processor_id(); 872 int cpu = hard_smp_processor_id();
872 873
@@ -897,7 +898,7 @@ static void __cpuinit register_one_mondo(unsigned long paddr, unsigned long type
897 } 898 }
898} 899}
899 900
900void __cpuinit sun4v_register_mondo_queues(int this_cpu) 901void __cpuinit notrace sun4v_register_mondo_queues(int this_cpu)
901{ 902{
902 struct trap_per_cpu *tb = &trap_block[this_cpu]; 903 struct trap_per_cpu *tb = &trap_block[this_cpu];
903 904