Dave Chinner <da...@fromorbit.com> writes: > We actually have an informal convention for formating filesystem > trace events, and that is to use the device number.... > >> >> > + ), >> > + >> > + TP_printk("page=%p pfn=%lu blk=%d:%d inode+ofs=%lu+%lu", > > ... and to prefix messages like: > > TP_printk("dev %d:%d ino 0x%llx .... > MAJOR(__entry->dev), MINOR(__entry->dev), > > i.e. the start of the event message has all the identifying > information where it is easy to grep for and get all the events for > a specific dev/inode combination without even having to think about > it.
I cross-checked your proposition. The "ino 0x%llx" looks wrong to me, because : - i_ino is "unsigned long", not "(unsigned) long long" - triggers a printk where "ino" looks really awfull (on a 32bits LE arm) > mm_filemap_add_to_page_cache: dev 0:2 ino 0xc05186e000000000 page=000a0737 > pfn=0 ofs=3283861504 - why print the inode number in hexadecimal format ??? Doing a "ls -i" returns decimal format, "debugfs" returns decimal. What is the rational behind hexadecimal ? I'd rather have : "dev %d:%d ino %lu page=0x%p pfn=%lu ofs=%lu". -- Robert -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/