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Commit 9bf1226b authored by Heiko Carstens's avatar Heiko Carstens Committed by Martin Schwidefsky
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[S390] ftrace: add system call tracer support 



System call tracer support for s390.

Signed-off-by: default avatarHeiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent 88dbd203

arch/s390/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -84,6 +84,7 @@ config S390 
	select HAVE_FUNCTION_TRACER

	select HAVE_FUNCTION_TRACE_MCOUNT_TEST

	select HAVE_FTRACE_MCOUNT_RECORD

	select HAVE_FTRACE_SYSCALLS

	select HAVE_DYNAMIC_FTRACE

	select HAVE_FUNCTION_GRAPH_TRACER

	select HAVE_DEFAULT_NO_SPIN_MUTEXES

arch/s390/include/asm/syscall.h

+1 −0
Original line number Diff line number Diff line
@@ -12,6 +12,7 @@ 
#ifndef _ASM_SYSCALL_H

#define _ASM_SYSCALL_H	1



#include <linux/sched.h>

#include <asm/ptrace.h>



static inline long syscall_get_nr(struct task_struct *task,

arch/s390/include/asm/thread_info.h

+2 −0
Original line number Diff line number Diff line
@@ -92,6 +92,7 @@ static inline struct thread_info *current_thread_info(void) 
#define TIF_SYSCALL_TRACE	8	/* syscall trace active */

#define TIF_SYSCALL_AUDIT	9	/* syscall auditing active */

#define TIF_SECCOMP		10	/* secure computing */

#define TIF_SYSCALL_FTRACE	11	/* ftrace syscall instrumentation */

#define TIF_USEDFPU		16	/* FPU was used by this task this quantum (SMP) */

#define TIF_POLLING_NRFLAG	17	/* true if poll_idle() is polling 

					   TIF_NEED_RESCHED */
@@ -110,6 +111,7 @@ static inline struct thread_info *current_thread_info(void) 
#define _TIF_SYSCALL_TRACE	(1<<TIF_SYSCALL_TRACE)

#define _TIF_SYSCALL_AUDIT	(1<<TIF_SYSCALL_AUDIT)

#define _TIF_SECCOMP		(1<<TIF_SECCOMP)

#define _TIF_SYSCALL_FTRACE	(1<<TIF_SYSCALL_FTRACE)

#define _TIF_USEDFPU		(1<<TIF_USEDFPU)

#define _TIF_POLLING_NRFLAG	(1<<TIF_POLLING_NRFLAG)

#define _TIF_31BIT		(1<<TIF_31BIT)

arch/s390/kernel/entry.S

+3 −1
Original line number Diff line number Diff line
@@ -53,7 +53,8 @@ _TIF_WORK_SVC = (_TIF_SIGPENDING | _TIF_NOTIFY_RESUME | _TIF_NEED_RESCHED | \ 
		 _TIF_MCCK_PENDING | _TIF_RESTART_SVC | _TIF_SINGLE_STEP )

_TIF_WORK_INT = (_TIF_SIGPENDING | _TIF_NOTIFY_RESUME | _TIF_NEED_RESCHED | \

		 _TIF_MCCK_PENDING)

_TIF_SYSCALL = (_TIF_SYSCALL_TRACE>>8 | _TIF_SYSCALL_AUDIT>>8 | _TIF_SECCOMP>>8)

_TIF_SYSCALL = (_TIF_SYSCALL_TRACE>>8 | _TIF_SYSCALL_AUDIT>>8 | \

		_TIF_SECCOMP>>8 | _TIF_SYSCALL_FTRACE>>8)



STACK_SHIFT = PAGE_SHIFT + THREAD_ORDER

STACK_SIZE  = 1 << STACK_SHIFT
@@ -1108,6 +1109,7 @@ cleanup_io_leave_insn: 


		.section .rodata, "a"

#define SYSCALL(esa,esame,emu)	.long esa

	.globl	sys_call_table

sys_call_table:

#include "syscalls.S"

#undef SYSCALL

arch/s390/kernel/entry64.S

+3 −1
Original line number Diff line number Diff line
@@ -56,7 +56,8 @@ _TIF_WORK_SVC = (_TIF_SIGPENDING | _TIF_NOTIFY_RESUME | _TIF_NEED_RESCHED | \ 
		 _TIF_MCCK_PENDING | _TIF_RESTART_SVC | _TIF_SINGLE_STEP )

_TIF_WORK_INT = (_TIF_SIGPENDING | _TIF_NOTIFY_RESUME | _TIF_NEED_RESCHED | \

		 _TIF_MCCK_PENDING)

_TIF_SYSCALL = (_TIF_SYSCALL_TRACE>>8 | _TIF_SYSCALL_AUDIT>>8 | _TIF_SECCOMP>>8)

_TIF_SYSCALL = (_TIF_SYSCALL_TRACE>>8 | _TIF_SYSCALL_AUDIT>>8 | \

		_TIF_SECCOMP>>8 | _TIF_SYSCALL_FTRACE>>8)



#define BASED(name) name-system_call(%r13)
@@ -1059,6 +1060,7 @@ cleanup_io_leave_insn: 


		.section .rodata, "a"

#define SYSCALL(esa,esame,emu)	.long esame

	.globl	sys_call_table

sys_call_table:

#include "syscalls.S"

#undef SYSCALL