Li Zefan 15152e448b blktrace: report EBUSY correctly ...

blk_trace_remove_queue() returns EINVAL if q->blk_trace == NULL,
but blk_trace_setup_queue() doesn't return EBUSY if
q->blk_trace != NULL.

 # echo 0 > sdaX/trace/enable
 # echo 0 > sdaX/trace/enable
 bash: echo: write error: Invalid argument
 # echo 1 > sdaX/trace/enable
 # echo 1 > sdaX/trace/enable
 (should return EBUSY)

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Acked-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jens Axboe <jens.axboe@oracle.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
LKML-Reference: <49C2F614.2010101@cn.fujitsu.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

2009-03-21 16:16:54 +01:00

..

blktrace.c

blktrace: report EBUSY correctly

2009-03-21 16:16:54 +01:00

events.c

tracing: use generic __stringify

2009-03-10 00:35:05 -04:00

ftrace.c

tracing/ftrace: fix the check on nopped sites

2009-03-16 22:15:36 -04:00

Kconfig

tracing/syscalls: select kallsysms

2009-03-16 09:13:17 +01:00

kmemtrace.c

tracing: Introduce trace_buffer_{lock_reserve,unlock_commit}

2009-02-06 01:01:41 +01:00

Makefile

tracing/ftrace: syscall tracing infrastructure, basics

2009-03-13 06:25:43 +01:00

ring_buffer.c

tracing/ring-buffer: fix non cpu hotplug case

2009-03-19 16:41:08 +01:00

trace_boot.c

tracing: Introduce trace_buffer_{lock_reserve,unlock_commit}

2009-02-06 01:01:41 +01:00

trace_branch.c

tracing: remove funky whitespace in the trace code

2009-03-10 14:13:14 -04:00

trace_clock.c

trace_clock: fix preemption bug

2009-03-10 20:03:01 +01:00

trace_event_types.h

tracing: make bprint event use the proper event id

2009-03-12 21:15:00 -04:00

trace_events_stage_1.h

tracing: update comments to match event code macros

2009-03-10 13:12:58 -04:00

trace_events_stage_2.h

tracing: show event name in trace for TRACE_EVENT created events

2009-03-12 22:00:19 -04:00

trace_events_stage_3.h

tracing: remove funky whitespace in the trace code

2009-03-10 14:13:14 -04:00

trace_events.c

tracing: fix leak in event_format_read()

2009-03-17 08:38:23 +01:00

trace_export.c

tracing: remove funky whitespace in the trace code

2009-03-10 14:13:14 -04:00

trace_functions_graph.c

tracing: protect reader of cmdline output

2009-03-16 23:27:06 -04:00

trace_functions.c

tracing/core: use appropriate waiting on trace_pipe

2009-02-18 01:40:20 +01:00

trace_hw_branches.c

tracing/hw-branch-tracing: convert bts-tracer mutex to a spinlock

2009-02-25 09:16:01 +01:00

trace_irqsoff.c

tracing: have latency tracers set the latency format

2009-03-04 22:15:30 -05:00

trace_mmiotrace.c

tracing/core: bring back raw trace_printk for dynamic formats strings

2009-03-12 21:15:00 -04:00

trace_nop.c

trace: Call tracing_reset_online_cpus before tracer->init()

2009-02-06 01:01:41 +01:00

trace_output.c

tracing: protect reader of cmdline output

2009-03-16 23:27:06 -04:00

trace_output.h

tracing/core: drop the old trace_printk() implementation in favour of trace_bprintk()

2009-03-06 17:59:12 +01:00

trace_power.c

tracing: make power tracer start/stop methods lighter weight

2009-03-17 23:12:11 -04:00

trace_printk.c

tracing: export trace formats to user space

2009-03-12 21:15:01 -04:00

trace_sched_switch.c

tracing: make sched_switch stop/start light weight

2009-03-17 23:10:45 -04:00

trace_sched_wakeup.c

tracing: have latency tracers set the latency format

2009-03-04 22:15:30 -05:00

trace_selftest_dynamic.c

ftrace: fix dynamic ftrace selftest

2008-05-23 21:13:23 +02:00

trace_selftest.c

tracing/ftrace: stop {irqs, preempt}soff tracers when tracing is stopped

2009-03-18 10:12:38 +01:00

trace_stack.c

tracing: left align location header in stack_trace

2009-03-13 00:00:58 -04:00

trace_stat.c

tracing: fix typing mistake in hint message and comments

2009-02-17 12:38:24 -05:00

trace_stat.h

tracing/ftrace: separate events tracing and stats tracing engine

2009-01-14 12:11:37 +01:00

trace_syscalls.c

tracing/syscalls: protect thread flag toggling from races

2009-03-16 09:13:16 +01:00

trace_sysprof.c

tracing: make all file_operations const

2009-03-05 21:46:40 -05:00

trace_workqueue.c

tracing: Don't use tracing_record_cmdline() in workqueue tracer fix

2009-03-12 21:23:47 -04:00

trace.c

Merge branches 'tracing/ftrace', 'tracing/kprobes', 'tracing/tasks' and 'linus' into tracing/core

2009-03-20 10:14:53 +01:00

trace.h

Merge branch 'tip/tracing/ftrace' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace into tracing/ftrace

2009-03-18 06:59:56 +01:00