Mohan Srinivasan | 25cc70f | 2016-12-14 16:39:51 -0800 | [diff] [blame] | 1 | #undef TRACE_SYSTEM |
| 2 | #define TRACE_SYSTEM android_fs |
| 3 | |
| 4 | #if !defined(_TRACE_ANDROID_FS_H) || defined(TRACE_HEADER_MULTI_READ) |
| 5 | #define _TRACE_ANDROID_FS_H |
| 6 | |
| 7 | #include <linux/tracepoint.h> |
| 8 | #include <trace/events/android_fs_template.h> |
| 9 | |
| 10 | DEFINE_EVENT(android_fs_data_start_template, android_fs_dataread_start, |
| 11 | TP_PROTO(struct inode *inode, loff_t offset, int bytes, |
Mohan Srinivasan | 009e608 | 2017-02-10 14:26:23 -0800 | [diff] [blame] | 12 | pid_t pid, char *pathname, char *command), |
| 13 | TP_ARGS(inode, offset, bytes, pid, pathname, command)); |
Mohan Srinivasan | 25cc70f | 2016-12-14 16:39:51 -0800 | [diff] [blame] | 14 | |
| 15 | DEFINE_EVENT(android_fs_data_end_template, android_fs_dataread_end, |
| 16 | TP_PROTO(struct inode *inode, loff_t offset, int bytes), |
| 17 | TP_ARGS(inode, offset, bytes)); |
| 18 | |
| 19 | DEFINE_EVENT(android_fs_data_start_template, android_fs_datawrite_start, |
| 20 | TP_PROTO(struct inode *inode, loff_t offset, int bytes, |
Mohan Srinivasan | 009e608 | 2017-02-10 14:26:23 -0800 | [diff] [blame] | 21 | pid_t pid, char *pathname, char *command), |
| 22 | TP_ARGS(inode, offset, bytes, pid, pathname, command)); |
Mohan Srinivasan | 25cc70f | 2016-12-14 16:39:51 -0800 | [diff] [blame] | 23 | |
| 24 | DEFINE_EVENT(android_fs_data_end_template, android_fs_datawrite_end, |
| 25 | TP_PROTO(struct inode *inode, loff_t offset, int bytes), |
Mohan Srinivasan | 009e608 | 2017-02-10 14:26:23 -0800 | [diff] [blame] | 26 | TP_ARGS(inode, offset, bytes)); |
Mohan Srinivasan | 25cc70f | 2016-12-14 16:39:51 -0800 | [diff] [blame] | 27 | |
| 28 | #endif /* _TRACE_ANDROID_FS_H */ |
| 29 | |
| 30 | /* This part must be outside protection */ |
| 31 | #include <trace/define_trace.h> |
Mohan Srinivasan | 009e608 | 2017-02-10 14:26:23 -0800 | [diff] [blame] | 32 | |
| 33 | #ifndef ANDROID_FSTRACE_GET_PATHNAME |
| 34 | #define ANDROID_FSTRACE_GET_PATHNAME |
| 35 | |
| 36 | /* Sizes an on-stack array, so careful if sizing this up ! */ |
| 37 | #define MAX_TRACE_PATHBUF_LEN 256 |
| 38 | |
| 39 | static inline char * |
| 40 | android_fstrace_get_pathname(char *buf, int buflen, struct inode *inode) |
| 41 | { |
| 42 | char *path; |
| 43 | struct dentry *d; |
| 44 | |
| 45 | /* |
| 46 | * d_obtain_alias() will either iput() if it locates an existing |
| 47 | * dentry or transfer the reference to the new dentry created. |
| 48 | * So get an extra reference here. |
| 49 | */ |
| 50 | ihold(inode); |
| 51 | d = d_obtain_alias(inode); |
| 52 | if (likely(!IS_ERR(d))) { |
| 53 | path = dentry_path_raw(d, buf, buflen); |
| 54 | if (unlikely(IS_ERR(path))) { |
| 55 | strcpy(buf, "ERROR"); |
| 56 | path = buf; |
| 57 | } |
| 58 | dput(d); |
| 59 | } else { |
| 60 | strcpy(buf, "ERROR"); |
| 61 | path = buf; |
| 62 | } |
| 63 | return path; |
| 64 | } |
| 65 | #endif |