From: Theodore Ts'o Subject: [PATCH 04/28] ext4: Add new tracepoint for jbd2_cleanup_journal_tail Date: Tue, 2 Mar 2010 13:18:21 -0500 Message-ID: <1267553925-6308-5-git-send-email-tytso@mit.edu> References: <1267553925-6308-1-git-send-email-tytso@mit.edu> Cc: Theodore Ts'o To: Ext4 Developers List Return-path: Received: from THUNK.ORG ([69.25.196.29]:43019 "EHLO thunker.thunk.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753276Ab0CBSSu (ORCPT ); Tue, 2 Mar 2010 13:18:50 -0500 In-Reply-To: <1267553925-6308-1-git-send-email-tytso@mit.edu> Sender: linux-ext4-owner@vger.kernel.org List-ID: Signed-off-by: "Theodore Ts'o" --- fs/jbd2/checkpoint.c | 1 + include/trace/events/jbd2.h | 28 ++++++++++++++++++++++++++++ 2 files changed, 29 insertions(+), 0 deletions(-) diff --git a/fs/jbd2/checkpoint.c b/fs/jbd2/checkpoint.c index 8868493..30beb11 100644 --- a/fs/jbd2/checkpoint.c +++ b/fs/jbd2/checkpoint.c @@ -507,6 +507,7 @@ int jbd2_cleanup_journal_tail(journal_t *journal) if (blocknr < journal->j_tail) freed = freed + journal->j_last - journal->j_first; + trace_jbd2_cleanup_journal_tail(journal, first_tid, blocknr, freed); jbd_debug(1, "Cleaning journal tail from %d to %d (offset %lu), " "freeing %lu\n", diff --git a/include/trace/events/jbd2.h b/include/trace/events/jbd2.h index 96b370a..bf16545 100644 --- a/include/trace/events/jbd2.h +++ b/include/trace/events/jbd2.h @@ -199,6 +199,34 @@ TRACE_EVENT(jbd2_checkpoint_stats, __entry->forced_to_close, __entry->written, __entry->dropped) ); +TRACE_EVENT(jbd2_cleanup_journal_tail, + + TP_PROTO(journal_t *journal, tid_t first_tid, + unsigned long block_nr, unsigned long freed), + + TP_ARGS(journal, first_tid, block_nr, freed), + + TP_STRUCT__entry( + __field( dev_t, dev ) + __field( tid_t, tail_sequence ) + __field( tid_t, first_tid ) + __field(unsigned long, block_nr ) + __field(unsigned long, freed ) + ), + + TP_fast_assign( + __entry->dev = journal->j_fs_dev->bd_dev; + __entry->tail_sequence = journal->j_tail_sequence; + __entry->first_tid = first_tid; + __entry->block_nr = block_nr; + __entry->freed = freed; + ), + + TP_printk("dev %s from %u to %u offset %lu freed %lu", + jbd2_dev_to_name(__entry->dev), __entry->tail_sequence, + __entry->first_tid, __entry->block_nr, __entry->freed) +); + #endif /* _TRACE_JBD2_H */ /* This part must be outside protection */ -- 1.6.6.1.1.g974db.dirty