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authorMartin Schwidefsky <schwidefsky@de.ibm.com>2011-01-05 12:47:25 +0100
committerMartin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com>2011-01-05 12:47:24 +0100
commit860dba45e81be2e1ba977617652ae36084daebaf (patch)
treeedeb79a565754fcec0d6bcfb225e36ad761cba48 /arch/s390/kernel
parent4a1886358b2d68f6f8745bfc10399c2376681acc (diff)
downloadlinux-linaro-android-860dba45e81be2e1ba977617652ae36084daebaf.tar.gz
[S390] add kprobes annotations
Add kprobes annotations to get the massive 'probe kernel.function("*") {}' stress test working. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/kernel')
-rw-r--r--arch/s390/kernel/entry.S4
-rw-r--r--arch/s390/kernel/entry64.S4
-rw-r--r--arch/s390/kernel/mcount.S2
-rw-r--r--arch/s390/kernel/mcount64.S2
-rw-r--r--arch/s390/kernel/process.c9
-rw-r--r--arch/s390/kernel/time.c3
-rw-r--r--arch/s390/kernel/traps.c6
-rw-r--r--arch/s390/kernel/vtime.c5
8 files changed, 26 insertions, 9 deletions
diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S
index 1ecc337fb67..68d1a02db6b 100644
--- a/arch/s390/kernel/entry.S
+++ b/arch/s390/kernel/entry.S
@@ -188,6 +188,8 @@ STACK_SIZE = 1 << STACK_SHIFT
ssm __SF_EMPTY(%r15)
.endm
+ .section .kprobes.text, "ax"
+
/*
* Scheduler resume function, called by switch_to
* gpr2 = (task_struct *) prev
@@ -861,6 +863,8 @@ restart_crash:
restart_go:
#endif
+ .section .kprobes.text, "ax"
+
#ifdef CONFIG_CHECK_STACK
/*
* The synchronous or the asynchronous stack overflowed. We are dead.
diff --git a/arch/s390/kernel/entry64.S b/arch/s390/kernel/entry64.S
index 8f3e802174d..1c0dce58933 100644
--- a/arch/s390/kernel/entry64.S
+++ b/arch/s390/kernel/entry64.S
@@ -197,6 +197,8 @@ _TIF_SYSCALL = (_TIF_SYSCALL_TRACE>>8 | _TIF_SYSCALL_AUDIT>>8 | \
ssm __SF_EMPTY(%r15)
.endm
+ .section .kprobes.text, "ax"
+
/*
* Scheduler resume function, called by switch_to
* gpr2 = (task_struct *) prev
@@ -868,6 +870,8 @@ restart_crash:
restart_go:
#endif
+ .section .kprobes.text, "ax"
+
#ifdef CONFIG_CHECK_STACK
/*
* The synchronous or the asynchronous stack overflowed. We are dead.
diff --git a/arch/s390/kernel/mcount.S b/arch/s390/kernel/mcount.S
index dfe015d7398..4a6e1a575f9 100644
--- a/arch/s390/kernel/mcount.S
+++ b/arch/s390/kernel/mcount.S
@@ -7,6 +7,8 @@
#include <asm/asm-offsets.h>
+ .section .kprobes.text, "ax"
+
.globl ftrace_stub
ftrace_stub:
br %r14
diff --git a/arch/s390/kernel/mcount64.S b/arch/s390/kernel/mcount64.S
index c37211c6092..b2bae06ad6c 100644
--- a/arch/s390/kernel/mcount64.S
+++ b/arch/s390/kernel/mcount64.S
@@ -7,6 +7,8 @@
#include <asm/asm-offsets.h>
+ .section .kprobes.text, "ax"
+
.globl ftrace_stub
ftrace_stub:
br %r14
diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c
index ec2e03b22ea..b825b3e1cb1 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>
@@ -116,15 +117,17 @@ 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)
{
diff --git a/arch/s390/kernel/time.c b/arch/s390/kernel/time.c
index f754a6dc4f9..4c9d72d2e27 100644
--- a/arch/s390/kernel/time.c
+++ b/arch/s390/kernel/time.c
@@ -37,6 +37,7 @@
#include <linux/clocksource.h>
#include <linux/clockchips.h>
#include <linux/gfp.h>
+#include <linux/kprobes.h>
#include <asm/uaccess.h>
#include <asm/delay.h>
#include <asm/s390_ext.h>
@@ -60,7 +61,7 @@ static DEFINE_PER_CPU(struct clock_event_device, comparators);
/*
* Scheduler clock - returns current time in nanosec units.
*/
-unsigned long long notrace sched_clock(void)
+unsigned long long notrace __kprobes sched_clock(void)
{
return (get_clock_monotonic() * 125) >> 9;
}
diff --git a/arch/s390/kernel/traps.c b/arch/s390/kernel/traps.c
index 70640822621..bc4f32fcfa5 100644
--- a/arch/s390/kernel/traps.c
+++ b/arch/s390/kernel/traps.c
@@ -451,8 +451,8 @@ static inline void do_fp_trap(struct pt_regs *regs, void __user *location,
"floating point exception", regs, &si);
}
-static void illegal_op(struct pt_regs *regs, long pgm_int_code,
- unsigned long trans_exc_code)
+static void __kprobes illegal_op(struct pt_regs *regs, long pgm_int_code,
+ unsigned long trans_exc_code)
{
siginfo_t info;
__u8 opcode[6];
@@ -688,7 +688,7 @@ static void space_switch_exception(struct pt_regs *regs, long pgm_int_code,
do_trap(pgm_int_code, SIGILL, "space switch event", regs, &info);
}
-asmlinkage void kernel_stack_overflow(struct pt_regs * regs)
+asmlinkage void __kprobes kernel_stack_overflow(struct pt_regs * regs)
{
bust_spinlocks(1);
printk("Kernel stack overflow.\n");
diff --git a/arch/s390/kernel/vtime.c b/arch/s390/kernel/vtime.c
index 7eff9b7347c..8636dd00e39 100644
--- a/arch/s390/kernel/vtime.c
+++ b/arch/s390/kernel/vtime.c
@@ -20,6 +20,7 @@
#include <linux/rcupdate.h>
#include <linux/posix-timers.h>
#include <linux/cpu.h>
+#include <linux/kprobes.h>
#include <asm/s390_ext.h>
#include <asm/timer.h>
@@ -122,7 +123,7 @@ void account_system_vtime(struct task_struct *tsk)
}
EXPORT_SYMBOL_GPL(account_system_vtime);
-void vtime_start_cpu(__u64 int_clock, __u64 enter_timer)
+void __kprobes vtime_start_cpu(__u64 int_clock, __u64 enter_timer)
{
struct s390_idle_data *idle = &__get_cpu_var(s390_idle);
struct vtimer_queue *vq = &__get_cpu_var(virt_cpu_timer);
@@ -162,7 +163,7 @@ void vtime_start_cpu(__u64 int_clock, __u64 enter_timer)
idle->sequence++;
}
-void vtime_stop_cpu(void)
+void __kprobes vtime_stop_cpu(void)
{
struct s390_idle_data *idle = &__get_cpu_var(s390_idle);
struct vtimer_queue *vq = &__get_cpu_var(virt_cpu_timer);