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authorLukas Czerner <lczerner@redhat.com>2011-05-23 18:33:02 +0200
committerJan Kara <jack@suse.cz>2011-06-25 17:29:51 +0200
commit99cb1a318c37bf462c53d43f4dacb7b4896ce0c9 (patch)
tree32a9046649777e8cc589bbc8e0afb382642ba450 /fs/jbd/checkpoint.c
parent785c4bcc0d88ff006a0b2120815a71e86ecf21ce (diff)
jbd: Add fixed tracepoints
This commit adds fixed tracepoint for jbd. It has been based on fixed tracepoints for jbd2, however there are missing those for collecting statistics, since I think that it will require more intrusive patch so I should have its own commit, if someone decide that it is needed. Also there are new tracepoints in __journal_drop_transaction() and journal_update_superblock(). The list of jbd tracepoints: jbd_checkpoint jbd_start_commit jbd_commit_locking jbd_commit_flushing jbd_commit_logging jbd_drop_transaction jbd_end_commit jbd_do_submit_data jbd_cleanup_journal_tail jbd_update_superblock_end Signed-off-by: Lukas Czerner <lczerner@redhat.com> Cc: Jan Kara <jack@suse.cz> Signed-off-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs/jbd/checkpoint.c')
-rw-r--r--fs/jbd/checkpoint.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/jbd/checkpoint.c b/fs/jbd/checkpoint.c
index e4b87bc1fa5..dea7503b47e 100644
--- a/fs/jbd/checkpoint.c
+++ b/fs/jbd/checkpoint.c
@@ -22,6 +22,7 @@
#include <linux/jbd.h>
#include <linux/errno.h>
#include <linux/slab.h>
+#include <trace/events/jbd.h>
/*
* Unlink a buffer from a transaction checkpoint list.
@@ -358,6 +359,7 @@ int log_do_checkpoint(journal_t *journal)
* journal straight away.
*/
result = cleanup_journal_tail(journal);
+ trace_jbd_checkpoint(journal, result);
jbd_debug(1, "cleanup_journal_tail returned %d\n", result);
if (result <= 0)
return result;
@@ -503,6 +505,7 @@ int cleanup_journal_tail(journal_t *journal)
if (blocknr < journal->j_tail)
freed = freed + journal->j_last - journal->j_first;
+ trace_jbd_cleanup_journal_tail(journal, first_tid, blocknr, freed);
jbd_debug(1,
"Cleaning journal tail from %d to %d (offset %u), "
"freeing %u\n",
@@ -752,6 +755,7 @@ void __journal_drop_transaction(journal_t *journal, transaction_t *transaction)
J_ASSERT(journal->j_committing_transaction != transaction);
J_ASSERT(journal->j_running_transaction != transaction);
+ trace_jbd_drop_transaction(journal, transaction);
jbd_debug(1, "Dropping transaction %d, all done\n", transaction->t_tid);
kfree(transaction);
}