[since v1: added Christoph's ack and make it actually work]
Save inode->dirtied_when in the raw trace output for reliable scripting,
and to also show in formatted output the relative age in seconds for
easy human reading.
CC: Jan Kara <jack@xxxxxxx>
Acked-by: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Signed-off-by: Wu Fengguang <fengguang.wu@xxxxxxxxx>
---
include/trace/events/writeback.h | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
--- linux-next.orig/include/trace/events/writeback.h 2011-08-29 09:51:12.000000000 +0800
+++ linux-next/include/trace/events/writeback.h 2011-08-29 17:14:16.000000000 +0800
@@ -433,7 +433,7 @@ DECLARE_EVENT_CLASS(writeback_single_ino
__array(char, name, 32)
__field(unsigned long, ino)
__field(unsigned long, state)
- __field(unsigned long, age)
+ __field(unsigned long, dirtied_when)
__field(unsigned long, writeback_index)
__field(long, nr_to_write)
__field(unsigned long, wrote)
@@ -444,19 +444,19 @@ DECLARE_EVENT_CLASS(writeback_single_ino
dev_name(inode->i_mapping->backing_dev_info->dev), 32);
__entry->ino = inode->i_ino;
__entry->state = inode->i_state;
- __entry->age = (jiffies - inode->dirtied_when) *
- 1000 / HZ;
+ __entry->dirtied_when = inode->dirtied_when;
__entry->writeback_index = inode->i_mapping->writeback_index;
__entry->nr_to_write = nr_to_write;
__entry->wrote = nr_to_write - wbc->nr_to_write;
),
- TP_printk("bdi %s: ino=%lu state=%s age=%lu "
+ TP_printk("bdi %s: ino=%lu state=%s dirtied_when=%lu age=%lu "
"index=%lu to_write=%ld wrote=%lu",
__entry->name,
__entry->ino,
show_inode_state(__entry->state),
- __entry->age,
+ __entry->dirtied_when,
+ (jiffies - __entry->dirtied_when) / HZ,
__entry->writeback_index,
__entry->nr_to_write,
__entry->wrote
--
To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
