diff options
| author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2009-06-12 10:26:44 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2009-06-12 10:27:38 +0200 |
| commit | dfd9f7abc0fb67b5781f340d982384cea53b2884 (patch) | |
| tree | 850baae88167699f45ba1dea1765b9156373db72 /arch/s390/include | |
| parent | [S390] kprobes: use probe_kernel_write (diff) | |
| download | linux-dfd9f7abc0fb67b5781f340d982384cea53b2884.tar.xz linux-dfd9f7abc0fb67b5781f340d982384cea53b2884.zip | |
[S390] ftrace: add dynamic ftrace support
Dynamic ftrace support for s390.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/include')
| -rw-r--r-- | arch/s390/include/asm/ftrace.h | 19 | ||||
| -rw-r--r-- | arch/s390/include/asm/lowcore.h | 8 |
2 files changed, 25 insertions, 2 deletions
diff --git a/arch/s390/include/asm/ftrace.h b/arch/s390/include/asm/ftrace.h index 5a5bc75e19d4..ba23d8f97d07 100644 --- a/arch/s390/include/asm/ftrace.h +++ b/arch/s390/include/asm/ftrace.h @@ -2,7 +2,26 @@ #define _ASM_S390_FTRACE_H #ifndef __ASSEMBLY__ + extern void _mcount(void); +extern unsigned long ftrace_dyn_func; + +struct dyn_arch_ftrace { }; + +#define MCOUNT_ADDR ((long)_mcount) + +#ifdef CONFIG_64BIT +#define MCOUNT_INSN_SIZE 24 +#define MCOUNT_OFFSET 14 +#else +#define MCOUNT_INSN_SIZE 30 +#define MCOUNT_OFFSET 8 #endif +static inline unsigned long ftrace_call_adjust(unsigned long addr) +{ + return addr - MCOUNT_OFFSET; +} + +#endif /* __ASSEMBLY__ */ #endif /* _ASM_S390_FTRACE_H */ diff --git a/arch/s390/include/asm/lowcore.h b/arch/s390/include/asm/lowcore.h index 713fe9fb1fcc..5046ad6b7a63 100644 --- a/arch/s390/include/asm/lowcore.h +++ b/arch/s390/include/asm/lowcore.h @@ -68,6 +68,7 @@ #define __LC_CPUID 0x02b0 #define __LC_INT_CLOCK 0x02c8 #define __LC_MACHINE_FLAGS 0x02d8 +#define __LC_FTRACE_FUNC 0x02dc #define __LC_IRB 0x0300 #define __LC_PFAULT_INTPARM 0x0080 #define __LC_CPU_TIMER_SAVE_AREA 0x00d8 @@ -113,6 +114,7 @@ #define __LC_INT_CLOCK 0x0340 #define __LC_VDSO_PER_CPU 0x0350 #define __LC_MACHINE_FLAGS 0x0358 +#define __LC_FTRACE_FUNC 0x0360 #define __LC_IRB 0x0380 #define __LC_PASTE 0x03c0 #define __LC_PFAULT_INTPARM 0x11b8 @@ -281,7 +283,8 @@ struct _lowcore __u64 int_clock; /* 0x02c8 */ __u64 clock_comparator; /* 0x02d0 */ __u32 machine_flags; /* 0x02d8 */ - __u8 pad_0x02dc[0x0300-0x02dc]; /* 0x02dc */ + __u32 ftrace_func; /* 0x02dc */ + __u8 pad_0x02f0[0x0300-0x02f0]; /* 0x02f0 */ /* Interrupt response block */ __u8 irb[64]; /* 0x0300 */ @@ -386,7 +389,8 @@ struct _lowcore __u64 clock_comparator; /* 0x0348 */ __u64 vdso_per_cpu_data; /* 0x0350 */ __u64 machine_flags; /* 0x0358 */ - __u8 pad_0x0360[0x0380-0x0360]; /* 0x0360 */ + __u64 ftrace_func; /* 0x0360 */ + __u8 pad_0x0368[0x0380-0x0368]; /* 0x0368 */ /* Interrupt response block. */ __u8 irb[64]; /* 0x0380 */ |