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authorLi Zefan <lizf@cn.fujitsu.com>2009-04-02 01:43:26 -0400
committerIngo Molnar <mingo@elte.hu>2009-04-03 09:29:26 -0400
commite2494e1b42ebac402324105d57646489d19e2b01 (patch)
treebd8d0beac5d8b8a7e6ff209c265b015a56fed1fd /kernel/trace/blktrace.c
parent7635b03adf3d7b84da7649b81efa91e6ebf11b85 (diff)
blktrace: fix pdu_len when tracing packet command requests
Impact: output all of packet commands - not just the first 4 / 8 bytes Since commit d7e3c3249ef23b4617393c69fe464765b4ff1645 ("block: add large command support"), struct request->cmd has been changed from unsinged char cmd[BLK_MAX_CDB] to unsigned char *cmd. v1 -> v2: by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> - make sure rq->cmd_len is always intialized, and then we can use rq->cmd_len instead of BLK_MAX_CDB. Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Acked-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jens Axboe <jens.axboe@oracle.com> LKML-Reference: <49D4507E.2060602@cn.fujitsu.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/trace/blktrace.c')
-rw-r--r--kernel/trace/blktrace.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c
index 73d7860b72e2..b32ff446c3fb 100644
--- a/kernel/trace/blktrace.c
+++ b/kernel/trace/blktrace.c
@@ -643,7 +643,7 @@ static void blk_add_trace_rq(struct request_queue *q, struct request *rq,
643 if (blk_pc_request(rq)) { 643 if (blk_pc_request(rq)) {
644 what |= BLK_TC_ACT(BLK_TC_PC); 644 what |= BLK_TC_ACT(BLK_TC_PC);
645 __blk_add_trace(bt, 0, rq->data_len, rw, what, rq->errors, 645 __blk_add_trace(bt, 0, rq->data_len, rw, what, rq->errors,
646 sizeof(rq->cmd), rq->cmd); 646 rq->cmd_len, rq->cmd);
647 } else { 647 } else {
648 what |= BLK_TC_ACT(BLK_TC_FS); 648 what |= BLK_TC_ACT(BLK_TC_FS);
649 __blk_add_trace(bt, rq->hard_sector, rq->hard_nr_sectors << 9, 649 __blk_add_trace(bt, rq->hard_sector, rq->hard_nr_sectors << 9,