Commit 860dba45 authored by Martin Schwidefsky's avatar Martin Schwidefsky Committed by Martin Schwidefsky
Browse files

[S390] add kprobes annotations 



Add kprobes annotations to get the massive 'probe kernel.function("*") {}'
stress test working.

Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent 4a188635

arch/s390/kernel/entry.S

+4 −0
Original line number Diff line number Diff line
@@ -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.

arch/s390/kernel/entry64.S

+4 −0
Original line number Diff line number Diff line
@@ -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.

arch/s390/kernel/mcount.S

+2 −0
Original line number Diff line number Diff line
@@ -7,6 +7,8 @@ 


#include <asm/asm-offsets.h>



	.section .kprobes.text, "ax"



	.globl ftrace_stub

ftrace_stub:

	br	%r14

arch/s390/kernel/mcount64.S

+2 −0
Original line number Diff line number Diff line
@@ -7,6 +7,8 @@ 


#include <asm/asm-offsets.h>



	.section .kprobes.text, "ax"



	.globl ftrace_stub

ftrace_stub:

	br	%r14

arch/s390/kernel/process.c

+6 −3
Original line number Diff line number Diff line
@@ -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)

{