#include <linux/fs.h>
+#define LTTNG_SYM_NAME_LEN 128
+
enum lttng_kernel_instrumentation {
LTTNG_KERNEL_TRACEPOINTS,
LTTNG_KERNEL_KPROBES,
+ LTTNG_KERNEL_FUNCTION_TRACER,
};
/*
*/
struct lttng_kernel_channel {
- int overwrite; /* 1: overwrite, 0: discard */
- u64 subbuf_size;
- u64 num_subbuf;
- unsigned int switch_timer_interval;
- unsigned int read_timer_interval;
-};
-
-struct lttng_kernel_event {
- enum lttng_kernel_instrumentation instrumentation;
- char name[];
+ int overwrite; /* 1: overwrite, 0: discard */
+ uint64_t subbuf_size; /* in bytes */
+ uint64_t num_subbuf;
+ unsigned int switch_timer_interval; /* usecs */
+ unsigned int read_timer_interval; /* usecs */
};
/*
* Either addr is used, or symbol_name and offset.
*/
struct lttng_kernel_kprobe {
- u64 addr;
+ uint64_t addr;
+
+ uint64_t offset;
+ char symbol_name[LTTNG_SYM_NAME_LEN];
+};
+
+struct lttng_kernel_function_tracer {
+ char symbol_name[LTTNG_SYM_NAME_LEN];
+};
+
+struct lttng_kernel_event {
+ enum lttng_kernel_instrumentation instrumentation;
+ /* Per instrumentation type configuration */
+ union {
+ struct lttng_kernel_kprobe kprobe;
+ struct lttng_kernel_function_tracer ftrace;
+ } u;
+ char name[]; /* event name */
+};
- u64 offset;
- char symbol_name[];
+struct lttng_kernel_tracer_version {
+ uint32_t version;
+ uint32_t patchlevel;
+ uint32_t sublevel;
};
#define LTTNG_KERNEL_SESSION _IO(0xF6, 0x40)
#define LTTNG_KERNEL_KPROBE \
_IOW(0xF6, 0x47, struct lttng_kernel_kprobe)
#define LTTNG_KERNEL_TRACER_VERSION \
- _IOW(0xF6, 0x48, struct lttng_kernel_tracer_version)
+ _IOR(0xF6, 0x48, struct lttng_kernel_tracer_version)
#endif /* _LTT_DEBUGFS_ABI_H */