| 1 | #undef TRACE_SYSTEM |
| 2 | #define TRACE_SYSTEM printk |
| 3 | |
| 4 | #if !defined(_TRACE_PRINTK_H) || defined(TRACE_HEADER_MULTI_READ) |
| 5 | #define _TRACE_PRINTK_H |
| 6 | |
| 7 | #include <linux/tracepoint.h> |
| 8 | #include <linux/version.h> |
| 9 | |
| 10 | #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,10,0)) |
| 11 | |
| 12 | TRACE_EVENT(console, |
| 13 | TP_PROTO(const char *text, size_t len), |
| 14 | |
| 15 | TP_ARGS(text, len), |
| 16 | |
| 17 | TP_STRUCT__entry( |
| 18 | __dynamic_array_text(char, msg, len) |
| 19 | ), |
| 20 | |
| 21 | TP_fast_assign( |
| 22 | tp_memcpy_dyn(msg, text) |
| 23 | ), |
| 24 | |
| 25 | TP_printk("%s", __get_str(msg)) |
| 26 | ) |
| 27 | |
| 28 | #elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,5,0)) |
| 29 | |
| 30 | TRACE_EVENT_CONDITION(console, |
| 31 | TP_PROTO(const char *log_buf, unsigned start, unsigned end, |
| 32 | unsigned log_buf_len), |
| 33 | |
| 34 | TP_ARGS(log_buf, start, end, log_buf_len), |
| 35 | |
| 36 | TP_CONDITION(start != end), |
| 37 | |
| 38 | TP_STRUCT__entry( |
| 39 | __dynamic_array_text(char, msg, end - start) |
| 40 | ), |
| 41 | |
| 42 | TP_fast_assign( |
| 43 | tp_memcpy_dyn(msg, log_buf + start) |
| 44 | ), |
| 45 | |
| 46 | TP_printk("%s", __get_str(msg)) |
| 47 | ) |
| 48 | |
| 49 | #else /* (LINUX_VERSION_CODE < KERNEL_VERSION(3,5,0)) */ |
| 50 | |
| 51 | TRACE_EVENT_CONDITION(console, |
| 52 | TP_PROTO(const char *log_buf, unsigned start, unsigned end, |
| 53 | unsigned log_buf_len), |
| 54 | |
| 55 | TP_ARGS(log_buf, start, end, log_buf_len), |
| 56 | |
| 57 | TP_CONDITION(start != end), |
| 58 | |
| 59 | TP_STRUCT__entry( |
| 60 | __dynamic_array_text_2(char, msg, |
| 61 | (start & (log_buf_len - 1)) > (end & (log_buf_len - 1)) |
| 62 | ? log_buf_len - (start & (log_buf_len - 1)) |
| 63 | : end - start, |
| 64 | (start & (log_buf_len - 1)) > (end & (log_buf_len - 1)) |
| 65 | ? end & (log_buf_len - 1) |
| 66 | : 0) |
| 67 | ), |
| 68 | |
| 69 | TP_fast_assign( |
| 70 | tp_memcpy_dyn_2(msg, |
| 71 | log_buf + (start & (log_buf_len - 1)), |
| 72 | log_buf) |
| 73 | ), |
| 74 | |
| 75 | TP_printk("%s", __get_str(msg)) |
| 76 | ) |
| 77 | |
| 78 | #endif |
| 79 | |
| 80 | #endif /* _TRACE_PRINTK_H */ |
| 81 | |
| 82 | /* This part must be outside protection */ |
| 83 | #include "../../../probes/define_trace.h" |