From c83ae9cad8776bab153a05cc466be39f14011091 Mon Sep 17 00:00:00 2001 From: Steven Whitehouse Date: Mon, 18 Apr 2011 14:18:38 +0100 Subject: GFS2: Add an AIL writeback tracepoint Add a tracepoint for monitoring writeback of the AIL. Signed-off-by: Steven Whitehouse --- fs/gfs2/trace_gfs2.h | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) (limited to 'fs/gfs2/trace_gfs2.h') diff --git a/fs/gfs2/trace_gfs2.h b/fs/gfs2/trace_gfs2.h index 9133d0aaac26..5d07609ec57d 100644 --- a/fs/gfs2/trace_gfs2.h +++ b/fs/gfs2/trace_gfs2.h @@ -10,6 +10,7 @@ #include #include #include +#include #include "incore.h" #include "glock.h" @@ -320,6 +321,33 @@ TRACE_EVENT(gfs2_log_blocks, MINOR(__entry->dev), __entry->blocks) ); +/* Writing back the AIL */ +TRACE_EVENT(gfs2_ail_flush, + + TP_PROTO(const struct gfs2_sbd *sdp, const struct writeback_control *wbc, int start), + + TP_ARGS(sdp, wbc, start), + + TP_STRUCT__entry( + __field( dev_t, dev ) + __field( int, start ) + __field( int, sync_mode ) + __field( long, nr_to_write ) + ), + + TP_fast_assign( + __entry->dev = sdp->sd_vfs->s_dev; + __entry->start = start; + __entry->sync_mode = wbc->sync_mode; + __entry->nr_to_write = wbc->nr_to_write; + ), + + TP_printk("%u,%u ail flush %s %s %ld", MAJOR(__entry->dev), + MINOR(__entry->dev), __entry->start ? "start" : "end", + __entry->sync_mode == WB_SYNC_ALL ? "all" : "none", + __entry->nr_to_write) +); + /* Section 3 - bmap * * Objectives: -- cgit v1.2.3