Tao Ma 805f6b5e1c blktrace: Use rq->cmd_flags directly in blk_add_trace_rq. ... In blk_add_trace_rq, we only chose the minor 2 bits from request's cmd_flags and did some check for discard. so most of other flags(e.g, REQ_SYNC) are missing. For example, with a sync write after blkparse we get: 8,16 1 1 0.001776503 7509 A WS 1349632 + 1024 <- (8,17) 1347584 8,16 1 2 0.001776813 7509 Q WS 1349632 + 1024 [dd] 8,16 1 3 0.001780395 7509 G WS 1349632 + 1024 [dd] 8,16 1 5 0.001783186 7509 I W 1349632 + 1024 [dd] 8,16 1 11 0.001816987 7509 D W 1349632 + 1024 [dd] 8,16 0 2 0.006218192 0 C W 1349632 + 1024 [0] Since now we have integrated the flags of both bio and request, it is safe to pass rq->cmd_flags directly to __blk_add_trace. With this patch, after a sync write we get: 8,16 1 1 0.001776900 5425 A WS 1189888 + 1024 <- (8,17) 1187840 8,16 1 2 0.001777179 5425 Q WS 1189888 + 1024 [dd] 8,16 1 3 0.001780797 5425 G WS 1189888 + 1024 [dd] 8,16 1 5 0.001783402 5425 I WS 1189888 + 1024 [dd] 8,16 1 11 0.001817468 5425 D WS 1189888 + 1024 [dd] 8,16 0 2 0.005640709 0 C WS 1189888 + 1024 [0] Signed-off-by: Tao Ma <boyu.mt@taobao.com> Acked-by: Jeff Moyer <jmoyer@redhat.com> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>		2011-03-11 20:11:59 +01:00
..
blktrace.c	blktrace: Use rq->cmd_flags directly in blk_add_trace_rq.	2011-03-11 20:11:59 +01:00
ftrace.c	Merge branch 'llseek' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl	2010-10-22 10:52:56 -07:00
Kconfig	perf: Clean up power events by introducing new, more generic ones	2011-01-04 08:16:54 +01:00
Makefile	tracing: Fix TRACE_EVENT power tracepoint creation	2011-01-07 23:26:29 -05:00
power-traces.c	perf: Clean up power events by introducing new, more generic ones	2011-01-04 08:16:54 +01:00
ring_buffer.c	ring_buffer: Off-by-one and duplicate events in ring_buffer_read_page	2010-12-23 12:09:30 -05:00
ring_buffer_benchmark.c
trace.c	tracing: Fix preempt count leak	2011-01-07 23:20:02 -05:00
trace.h	tracing: Make graph related irqs/preemptsoff functions global	2010-10-18 10:53:28 -04:00
trace_branch.c
trace_clock.c
trace_entries.h	tree-wide: fix comment/printk typos	2010-11-01 15:38:34 -04:00
trace_event_perf.c	tracing: New flag to allow non privileged users to use a trace event	2010-11-18 14:37:40 +01:00
trace_events.c	tracing: Replace trace_event struct array with pointer array	2011-02-02 21:37:13 -05:00
trace_events_filter.c
trace_export.c	tracing: Replace trace_event struct array with pointer array	2011-02-02 21:37:13 -05:00
trace_functions.c
trace_functions_graph.c	tracing: Remove parent recording in latency tracer graph options	2010-10-18 10:53:38 -04:00
trace_irqsoff.c	lockdep: Move early boot local IRQ enable/disable status to init/main.c	2011-01-20 13:32:33 +01:00
trace_kdb.c	kdb,ftdump: Remove reference to internal kdb include	2010-10-22 15:34:11 -05:00
trace_kprobe.c	Remove duplicate includes from many files	2010-10-27 18:03:18 -07:00
trace_mmiotrace.c
trace_nop.c
trace_output.c
trace_output.h
trace_printk.c
trace_sched_switch.c
trace_sched_wakeup.c	tracing: Fix compile issue for trace_sched_wakeup.c	2010-10-19 10:56:19 -04:00
trace_selftest.c	sched: Constify function scope static struct sched_param usage	2011-01-07 15:55:45 +01:00
trace_selftest_dynamic.c
trace_stack.c	llseek: automatically add .llseek fop	2010-10-15 15:53:27 +02:00
trace_stat.c
trace_stat.h
trace_syscalls.c	tracing: Replace syscall_meta_data struct array with pointer array	2011-02-03 09:29:06 -05:00
trace_workqueue.c	jump label: Initialize workqueue tracepoints *before* they are registered	2010-09-22 16:30:03 -04:00