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authorJens Axboe <axboe@suse.de>2006-07-22 20:12:01 -0400
committerJens Axboe <axboe@nelson.home.kernel.dk>2006-09-30 14:29:43 -0400
commit7457e6e2d7406c7009e9ad03db1335fe93b5fb71 (patch)
treeb1653b11f3fe9a2d9a061aec7c4747a9809ecdb1 /block/blktrace.c
parent374f84ac39ec7829a57a66efd5125d3561ff0e00 (diff)
[PATCH] blktrace: support for logging metadata reads
Signed-off-by: Jens Axboe <axboe@suse.de>
Diffstat (limited to 'block/blktrace.c')
-rw-r--r--block/blktrace.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/block/blktrace.c b/block/blktrace.c
index 8ff33441d8a2..2592f215a905 100644
--- a/block/blktrace.c
+++ b/block/blktrace.c
@@ -69,7 +69,7 @@ static u32 ddir_act[2] __read_mostly = { BLK_TC_ACT(BLK_TC_READ), BLK_TC_ACT(BLK
69/* 69/*
70 * Bio action bits of interest 70 * Bio action bits of interest
71 */ 71 */
72static u32 bio_act[5] __read_mostly = { 0, BLK_TC_ACT(BLK_TC_BARRIER), BLK_TC_ACT(BLK_TC_SYNC), 0, BLK_TC_ACT(BLK_TC_AHEAD) }; 72static u32 bio_act[9] __read_mostly = { 0, BLK_TC_ACT(BLK_TC_BARRIER), BLK_TC_ACT(BLK_TC_SYNC), 0, BLK_TC_ACT(BLK_TC_AHEAD), 0, 0, 0, BLK_TC_ACT(BLK_TC_META) };
73 73
74/* 74/*
75 * More could be added as needed, taking care to increment the decrementer 75 * More could be added as needed, taking care to increment the decrementer
@@ -81,6 +81,8 @@ static u32 bio_act[5] __read_mostly = { 0, BLK_TC_ACT(BLK_TC_BARRIER), BLK_TC_AC
81 (((rw) & (1 << BIO_RW_SYNC)) >> (BIO_RW_SYNC - 1)) 81 (((rw) & (1 << BIO_RW_SYNC)) >> (BIO_RW_SYNC - 1))
82#define trace_ahead_bit(rw) \ 82#define trace_ahead_bit(rw) \
83 (((rw) & (1 << BIO_RW_AHEAD)) << (2 - BIO_RW_AHEAD)) 83 (((rw) & (1 << BIO_RW_AHEAD)) << (2 - BIO_RW_AHEAD))
84#define trace_meta_bit(rw) \
85 (((rw) & (1 << BIO_RW_META)) >> (BIO_RW_META - 3))
84 86
85/* 87/*
86 * The worker for the various blk_add_trace*() types. Fills out a 88 * The worker for the various blk_add_trace*() types. Fills out a
@@ -103,6 +105,7 @@ void __blk_add_trace(struct blk_trace *bt, sector_t sector, int bytes,
103 what |= bio_act[trace_barrier_bit(rw)]; 105 what |= bio_act[trace_barrier_bit(rw)];
104 what |= bio_act[trace_sync_bit(rw)]; 106 what |= bio_act[trace_sync_bit(rw)];
105 what |= bio_act[trace_ahead_bit(rw)]; 107 what |= bio_act[trace_ahead_bit(rw)];
108 what |= bio_act[trace_meta_bit(rw)];
106 109
107 pid = tsk->pid; 110 pid = tsk->pid;
108 if (unlikely(act_log_check(bt, what, sector, pid))) 111 if (unlikely(act_log_check(bt, what, sector, pid)))