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 | 33 | #include "page.h" |
| 34 | 34 | #include "mdt.h" |
| 35 | 35 | |
| 36 | +#include <trace/events/nilfs2.h> | |
| 36 | 37 | |
| 37 | 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 | 69 | set_buffer_uptodate(bh); |
| 69 | 70 | mark_buffer_dirty(bh); |
| 70 | 71 | nilfs_mdt_mark_dirty(inode); |
| 72 | + | |
| 73 | + trace_nilfs2_mdt_insert_new_block(inode, inode->i_ino, block); | |
| 74 | + | |
| 71 | 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 | 162 | get_bh(bh); |
| 159 | 163 | submit_bh(mode, bh); |
| 160 | 164 | ret = 0; |
| 165 | + | |
| 166 | + trace_nilfs2_mdt_submit_block(inode, inode->i_ino, blkoff, mode); | |
| 161 | 167 | out: |
| 162 | 168 | get_bh(bh); |
| 163 | 169 | *out_bh = bh; |
| @@ -162,6 +162,60 @@ TRACE_EVENT(nilfs2_segment_usage_freed, · 161 unmodified lines | ||
| 162 | 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 | 219 | #endif /* _TRACE_NILFS2_H */ |
| 166 | 220 | |
| 167 | 221 | /* This part must be outside protection */ |