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Diffstat (limited to 'arch/s390/kernel/process.c')
-rw-r--r--arch/s390/kernel/process.c21
1 files changed, 11 insertions, 10 deletions
diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c
index ec2e03b22ea..6ba42222b54 100644
--- a/arch/s390/kernel/process.c
+++ b/arch/s390/kernel/process.c
@@ -32,6 +32,7 @@
#include <linux/kernel_stat.h>
#include <linux/syscalls.h>
#include <linux/compat.h>
+#include <linux/kprobes.h>
#include <asm/compat.h>
#include <asm/uaccess.h>
#include <asm/pgtable.h>
@@ -41,6 +42,7 @@
#include <asm/irq.h>
#include <asm/timer.h>
#include <asm/nmi.h>
+#include <asm/smp.h>
#include "entry.h"
asmlinkage void ret_from_fork(void) asm ("ret_from_fork");
@@ -75,13 +77,8 @@ unsigned long thread_saved_pc(struct task_struct *tsk)
*/
static void default_idle(void)
{
- /* CPU is going idle. */
-#ifdef CONFIG_HOTPLUG_CPU
- if (cpu_is_offline(smp_processor_id())) {
- preempt_enable_no_resched();
+ if (cpu_is_offline(smp_processor_id()))
cpu_die();
- }
-#endif
local_irq_disable();
if (need_resched()) {
local_irq_enable();
@@ -116,15 +113,17 @@ void cpu_idle(void)
}
}
-extern void kernel_thread_starter(void);
+extern void __kprobes kernel_thread_starter(void);
asm(
- ".align 4\n"
+ ".section .kprobes.text, \"ax\"\n"
+ ".global kernel_thread_starter\n"
"kernel_thread_starter:\n"
" la 2,0(10)\n"
" basr 14,9\n"
" la 2,0\n"
- " br 11\n");
+ " br 11\n"
+ ".previous\n");
int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags)
{
@@ -214,8 +213,10 @@ int copy_thread(unsigned long clone_flags, unsigned long new_stackp,
/* start new process with ar4 pointing to the correct address space */
p->thread.mm_segment = get_fs();
/* Don't copy debug registers */
- memset(&p->thread.per_info, 0, sizeof(p->thread.per_info));
+ memset(&p->thread.per_user, 0, sizeof(p->thread.per_user));
+ memset(&p->thread.per_event, 0, sizeof(p->thread.per_event));
clear_tsk_thread_flag(p, TIF_SINGLE_STEP);
+ clear_tsk_thread_flag(p, TIF_PER_TRAP);
/* Initialize per thread user and system timer values */
ti = task_thread_info(p);
ti->user_timer = 0;