1/* 2 * Trampoline to trace irqs off. (otherwise CALLER_ADDR1 might crash) 3 * Copyright 2008 by Steven Rostedt, Red Hat, Inc 4 * (inspired by Andi Kleen's thunk_64.S) 5 * Subject to the GNU public license, v.2. No warranty of any kind. 6 */ 7 #include <linux/linkage.h> 8 #include <asm/asm.h> 9 10 /* put return address in eax (arg1) */ 11 .macro THUNK name, func, put_ret_addr_in_eax=0 12 .globl \name 13\name: 14 pushl %eax 15 pushl %ecx 16 pushl %edx 17 18 .if \put_ret_addr_in_eax 19 /* Place EIP in the arg1 */ 20 movl 3*4(%esp), %eax 21 .endif 22 23 call \func 24 popl %edx 25 popl %ecx 26 popl %eax 27 ret 28 _ASM_NOKPROBE(\name) 29 .endm 30 31#ifdef CONFIG_TRACE_IRQFLAGS 32 THUNK trace_hardirqs_on_thunk,trace_hardirqs_on_caller,1 33 THUNK trace_hardirqs_off_thunk,trace_hardirqs_off_caller,1 34#endif 35 36#ifdef CONFIG_PREEMPT 37 THUNK ___preempt_schedule, preempt_schedule 38 THUNK ___preempt_schedule_notrace, preempt_schedule_notrace 39#endif 40 41