diff options
author | Len Brown <len.brown@intel.com> | 2008-10-23 07:57:26 +0400 |
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committer | Len Brown <len.brown@intel.com> | 2008-10-23 08:11:07 +0400 |
commit | 057316cc6a5b521b332a1d7ccc871cd60c904c74 (patch) | |
tree | 4333e608da237c73ff69b10878025cca96dcb4c8 /include/linux/ftrace.h | |
parent | 3e2dab9a1c2deb03c311eb3f83466009147ed4d3 (diff) | |
parent | 2515ddc6db8eb49a79f0fe5e67ff09ac7c81eab4 (diff) | |
download | linux-057316cc6a5b521b332a1d7ccc871cd60c904c74.tar.xz |
Merge branch 'linus' into test
Conflicts:
MAINTAINERS
arch/x86/kernel/acpi/boot.c
arch/x86/kernel/acpi/sleep.c
drivers/acpi/Kconfig
drivers/pnp/Makefile
drivers/pnp/quirks.c
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'include/linux/ftrace.h')
-rw-r--r-- | include/linux/ftrace.h | 84 |
1 files changed, 78 insertions, 6 deletions
diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h index bb384068272e..a3d46151be19 100644 --- a/include/linux/ftrace.h +++ b/include/linux/ftrace.h @@ -1,10 +1,14 @@ #ifndef _LINUX_FTRACE_H #define _LINUX_FTRACE_H -#ifdef CONFIG_FTRACE - #include <linux/linkage.h> #include <linux/fs.h> +#include <linux/ktime.h> +#include <linux/init.h> +#include <linux/types.h> +#include <linux/kallsyms.h> + +#ifdef CONFIG_FTRACE extern int ftrace_enabled; extern int @@ -36,6 +40,7 @@ extern void ftrace_stub(unsigned long a0, unsigned long a1); # define register_ftrace_function(ops) do { } while (0) # define unregister_ftrace_function(ops) do { } while (0) # define clear_ftrace_function(ops) do { } while (0) +static inline void ftrace_kill_atomic(void) { } #endif /* CONFIG_FTRACE */ #ifdef CONFIG_DYNAMIC_FTRACE @@ -76,8 +81,10 @@ extern void mcount_call(void); extern int skip_trace(unsigned long ip); -void ftrace_disable_daemon(void); -void ftrace_enable_daemon(void); +extern void ftrace_release(void *start, unsigned long size); + +extern void ftrace_disable_daemon(void); +extern void ftrace_enable_daemon(void); #else # define skip_trace(ip) ({ 0; }) @@ -85,6 +92,7 @@ void ftrace_enable_daemon(void); # define ftrace_set_filter(buf, len, reset) do { } while (0) # define ftrace_disable_daemon() do { } while (0) # define ftrace_enable_daemon() do { } while (0) +static inline void ftrace_release(void *start, unsigned long size) { } #endif /* CONFIG_DYNAMIC_FTRACE */ /* totally disable ftrace - can not re-enable after this */ @@ -98,9 +106,11 @@ static inline void tracer_disable(void) #endif } -/* Ftrace disable/restore without lock. Some synchronization mechanism +/* + * Ftrace disable/restore without lock. Some synchronization mechanism * must be used to prevent ftrace_enabled to be changed between - * disable/restore. */ + * disable/restore. + */ static inline int __ftrace_enabled_save(void) { #ifdef CONFIG_FTRACE @@ -157,9 +167,71 @@ static inline void __ftrace_enabled_restore(int enabled) #ifdef CONFIG_TRACING extern void ftrace_special(unsigned long arg1, unsigned long arg2, unsigned long arg3); + +/** + * ftrace_printk - printf formatting in the ftrace buffer + * @fmt: the printf format for printing + * + * Note: __ftrace_printk is an internal function for ftrace_printk and + * the @ip is passed in via the ftrace_printk macro. + * + * This function allows a kernel developer to debug fast path sections + * that printk is not appropriate for. By scattering in various + * printk like tracing in the code, a developer can quickly see + * where problems are occurring. + * + * This is intended as a debugging tool for the developer only. + * Please refrain from leaving ftrace_printks scattered around in + * your code. + */ +# define ftrace_printk(fmt...) __ftrace_printk(_THIS_IP_, fmt) +extern int +__ftrace_printk(unsigned long ip, const char *fmt, ...) + __attribute__ ((format (printf, 2, 3))); +extern void ftrace_dump(void); #else static inline void ftrace_special(unsigned long arg1, unsigned long arg2, unsigned long arg3) { } +static inline int +ftrace_printk(const char *fmt, ...) __attribute__ ((format (printf, 1, 0))); + +static inline int +ftrace_printk(const char *fmt, ...) +{ + return 0; +} +static inline void ftrace_dump(void) { } #endif +#ifdef CONFIG_FTRACE_MCOUNT_RECORD +extern void ftrace_init(void); +extern void ftrace_init_module(unsigned long *start, unsigned long *end); +#else +static inline void ftrace_init(void) { } +static inline void +ftrace_init_module(unsigned long *start, unsigned long *end) { } +#endif + + +struct boot_trace { + pid_t caller; + char func[KSYM_NAME_LEN]; + int result; + unsigned long long duration; /* usecs */ + ktime_t calltime; + ktime_t rettime; +}; + +#ifdef CONFIG_BOOT_TRACER +extern void trace_boot(struct boot_trace *it, initcall_t fn); +extern void start_boot_trace(void); +extern void stop_boot_trace(void); +#else +static inline void trace_boot(struct boot_trace *it, initcall_t fn) { } +static inline void start_boot_trace(void) { } +static inline void stop_boot_trace(void) { } +#endif + + + #endif /* _LINUX_FTRACE_H */ |