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author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2011-01-05 11:47:25 (GMT) |
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committer | Martin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com> | 2011-01-05 11:47:24 (GMT) |
commit | 860dba45e81be2e1ba977617652ae36084daebaf (patch) | |
tree | edeb79a565754fcec0d6bcfb225e36ad761cba48 /arch/s390/kernel | |
parent | 4a1886358b2d68f6f8745bfc10399c2376681acc (diff) | |
download | linux-860dba45e81be2e1ba977617652ae36084daebaf.tar.xz |
[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.S | 4 | ||||
-rw-r--r-- | arch/s390/kernel/entry64.S | 4 | ||||
-rw-r--r-- | arch/s390/kernel/mcount.S | 2 | ||||
-rw-r--r-- | arch/s390/kernel/mcount64.S | 2 | ||||
-rw-r--r-- | arch/s390/kernel/process.c | 9 | ||||
-rw-r--r-- | arch/s390/kernel/time.c | 3 | ||||
-rw-r--r-- | arch/s390/kernel/traps.c | 6 | ||||
-rw-r--r-- | arch/s390/kernel/vtime.c | 5 |
8 files changed, 26 insertions, 9 deletions
diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S index 1ecc337..68d1a02 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 8f3e802..1c0dce5 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 dfe015d..4a6e1a5 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 c37211c..b2bae06 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 ec2e03b..b825b3e 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 f754a6d..4c9d72d 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 7064082..bc4f32f 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 7eff9b7..8636dd0 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); |