This patch adds tracepoints for analyzing requests of reading and writing metadata files. The tracepoints cover every in-place mdt files (cpfile, sufile, and datfile). Example of tracing mdt_insert_new_block(): cp-14635 [000] ...1 30598.199309: nilfs2_mdt_insert_new_block: inode = ffff88022a8d0178 ino = 3 block = 155 cp-14635 [000] ...1 30598.199520: nilfs2_mdt_insert_new_block: inode = ffff88022a8d0178 ino = 3 block = 5 cp-14635 [000] ...1 30598.200828: nilfs2_mdt_insert_new_block: inode = ffff88022a8d0178 ino = 3 block = 253
Unified · Split
| @@ -33,6 +33,7 @@ · 32 unmodified lines | |||
| 33 | #include "page.h" | 33 | #include "page.h" |
| 34 | #include "mdt.h" | 34 | #include "mdt.h" |
| 35 | 35 | ||
| 36 | #include <trace/events/nilfs2.h> | ||
| 36 | 37 | ||
| 37 | #define NILFS_MDT_MAX_RA_BLOCKS (16 - 1) | 38 | #define NILFS_MDT_MAX_RA_BLOCKS (16 - 1) |
| 38 | 39 | ||
| @@ -68,6 +69,9 @@ nilfs_mdt_insert_new_block(struct inode *inode, unsigned long block, · 29 unmodified lines | |||
| 68 | set_buffer_uptodate(bh); | 69 | set_buffer_uptodate(bh); |
| 69 | mark_buffer_dirty(bh); | 70 | mark_buffer_dirty(bh); |
| 70 | nilfs_mdt_mark_dirty(inode); | 71 | nilfs_mdt_mark_dirty(inode); |
| 72 | |||
| 73 | trace_nilfs2_mdt_insert_new_block(inode, inode->i_ino, block); | ||
| 74 | |||
| 71 | return 0; | 75 | return 0; |
| 72 | } | 76 | } |
| 73 | 77 | ||
| @@ -158,6 +162,8 @@ nilfs_mdt_submit_block(struct inode *inode, unsigned long blkoff, · 84 unmodified lines | |||
| 158 | get_bh(bh); | 162 | get_bh(bh); |
| 159 | submit_bh(mode, bh); | 163 | submit_bh(mode, bh); |
| 160 | ret = 0; | 164 | ret = 0; |
| 165 | |||
| 166 | trace_nilfs2_mdt_submit_block(inode, inode->i_ino, blkoff, mode); | ||
| 161 | out: | 167 | out: |
| 162 | get_bh(bh); | 168 | get_bh(bh); |
| 163 | *out_bh = bh; | 169 | *out_bh = bh; |
| @@ -162,6 +162,60 @@ TRACE_EVENT(nilfs2_segment_usage_freed, · 161 unmodified lines | |||
| 162 | __entry->segnum) | 162 | __entry->segnum) |
| 163 | ); | 163 | ); |
| 164 | 164 | ||
| 165 | TRACE_EVENT(nilfs2_mdt_insert_new_block, | ||
| 166 | TP_PROTO(struct inode *inode, | ||
| 167 | unsigned long ino, | ||
| 168 | unsigned long block), | ||
| 169 | |||
| 170 | TP_ARGS(inode, ino, block), | ||
| 171 | |||
| 172 | TP_STRUCT__entry( | ||
| 173 | __field(struct inode *, inode) | ||
| 174 | __field(unsigned long, ino) | ||
| 175 | __field(unsigned long, block) | ||
| 176 | ), | ||
| 177 | |||
| 178 | TP_fast_assign( | ||
| 179 | __entry->inode = inode; | ||
| 180 | __entry->ino = ino; | ||
| 181 | __entry->block = block; | ||
| 182 | ), | ||
| 183 | |||
| 184 | TP_printk("inode = %p ino = %lu block = %lu", | ||
| 185 | __entry->inode, | ||
| 186 | __entry->ino, | ||
| 187 | __entry->block) | ||
| 188 | ); | ||
| 189 | |||
| 190 | TRACE_EVENT(nilfs2_mdt_submit_block, | ||
| 191 | TP_PROTO(struct inode *inode, | ||
| 192 | unsigned long ino, | ||
| 193 | unsigned long blkoff, | ||
| 194 | int mode), | ||
| 195 | |||
| 196 | TP_ARGS(inode, ino, blkoff, mode), | ||
| 197 | |||
| 198 | TP_STRUCT__entry( | ||
| 199 | __field(struct inode *, inode) | ||
| 200 | __field(unsigned long, ino) | ||
| 201 | __field(unsigned long, blkoff) | ||
| 202 | __field(int, mode) | ||
| 203 | ), | ||
| 204 | |||
| 205 | TP_fast_assign( | ||
| 206 | __entry->inode = inode; | ||
| 207 | __entry->ino = ino; | ||
| 208 | __entry->blkoff = blkoff; | ||
| 209 | __entry->mode = mode; | ||
| 210 | ), | ||
| 211 | |||
| 212 | TP_printk("inode = %p ino = %lu blkoff = %lu mode = %x", | ||
| 213 | __entry->inode, | ||
| 214 | __entry->ino, | ||
| 215 | __entry->blkoff, | ||
| 216 | __entry->mode) | ||
| 217 | ); | ||
| 218 | |||
| 165 | #endif /* _TRACE_NILFS2_H */ | 219 | #endif /* _TRACE_NILFS2_H */ |
| 166 | 220 | ||
| 167 | /* This part must be outside protection */ | 221 | /* This part must be outside protection */ |