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Message-Id: <1309445439-3753-3-git-send-email-tm@tao.ma> Date: Thu, 30 Jun 2011 22:50:38 +0800 From: Tao Ma <tm@....ma> To: linux-ext4@...r.kernel.org Cc: tytso@....edu Subject: [PATCH 3/4] ext4: Add new ext4 trim tracepoints From: Tao Ma <boyu.mt@...bao.com> Add ext4_trim_extent and ext4_trim_all_free. Signed-off-by: Tao Ma <boyu.mt@...bao.com> --- fs/ext4/mballoc.c | 4 +++ include/trace/events/ext4.h | 49 +++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 53 insertions(+), 0 deletions(-) diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c index 83fb04b..a822f2a 100644 --- a/fs/ext4/mballoc.c +++ b/fs/ext4/mballoc.c @@ -4782,6 +4782,8 @@ static void ext4_trim_extent(struct super_block *sb, int start, int count, { struct ext4_free_extent ex; + trace_ext4_trim_extent(sb, group, start, count); + assert_spin_locked(ext4_group_lock_ptr(sb, group)); ex.fe_start = start; @@ -4827,6 +4829,8 @@ ext4_trim_all_free(struct super_block *sb, ext4_group_t group, struct ext4_buddy e4b; int ret; + trace_ext4_trim_all_free(sb, group, start, max); + ret = ext4_mb_load_buddy(sb, group, &e4b); if (ret) { ext4_error(sb, "Error in loading buddy " diff --git a/include/trace/events/ext4.h b/include/trace/events/ext4.h index 5ce2b2f..405ea6b 100644 --- a/include/trace/events/ext4.h +++ b/include/trace/events/ext4.h @@ -1520,6 +1520,55 @@ TRACE_EVENT(ext4_load_inode, (unsigned long) __entry->ino) ); +DECLARE_EVENT_CLASS(ext4__trim, + TP_PROTO(struct super_block *sb, + ext4_group_t group, + ext4_grpblk_t start, + ext4_grpblk_t len), + + TP_ARGS(sb, group, start, len), + + TP_STRUCT__entry( + __field( int, dev_major ) + __field( int, dev_minor ) + __field( __u32, group ) + __field( int, start ) + __field( int, len ) + ), + + TP_fast_assign( + __entry->dev_major = MAJOR(sb->s_dev); + __entry->dev_minor = MINOR(sb->s_dev); + __entry->group = group; + __entry->start = start; + __entry->len = len; + ), + + TP_printk("dev %d,%d group %u, start %d, len %d", + __entry->dev_major, __entry->dev_minor, + __entry->group, __entry->start, __entry->len) +); + +DEFINE_EVENT(ext4__trim, ext4_trim_extent, + + TP_PROTO(struct super_block *sb, + ext4_group_t group, + ext4_grpblk_t start, + ext4_grpblk_t len), + + TP_ARGS(sb, group, start, len) +); + +DEFINE_EVENT(ext4__trim, ext4_trim_all_free, + + TP_PROTO(struct super_block *sb, + ext4_group_t group, + ext4_grpblk_t start, + ext4_grpblk_t len), + + TP_ARGS(sb, group, start, len) +); + #endif /* _TRACE_EXT4_H */ /* This part must be outside protection */ -- 1.7.4 -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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