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0c8916c342
linux/kernel/trace
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Steven Rostedt 0c8916c342 tracing: Add rmdir to remove multibuffer instances 
Add a method to the hijacked dentry descriptor of the
"instances" directory to allow for rmdir to remove an
instance of a multibuffer.

Example:

  cd /debug/tracing/instances
  mkdir hello
  ls
hello/
  rmdir hello
  ls

Like the mkdir method, the i_mutex is dropped for the instances
directory. The instances directory is created at boot up and can
not be renamed or removed. The trace_types_lock mutex is used to
synchronize adding and removing of instances.

I've run several stress tests with different threads trying to
create and delete directories of the same name, and it has stood
up fine.

Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2013-03-15 00:34:45 -04:00
..
blktrace.c tracing: Use this_cpu_ptr per-cpu helper 2013-01-21 13:22:30 -05:00
ftrace.c tracing: Fix free of probe entry by calling call_rcu_sched() 2013-03-13 17:57:44 -04:00
Kconfig ftrace: Update the kconfig for DYNAMIC_FTRACE 2013-02-27 21:58:01 -05:00
Makefile trace: Stop compiling in trace_clock unconditionally 2012-09-13 22:52:08 -04:00
power-traces.c perf: Clean up power events by introducing new, more generic ones 2011-01-04 08:16:54 +01:00
ring_buffer_benchmark.c tracing: Use NUMA allocation for per-cpu ring buffer pages 2011-06-14 22:04:39 -04:00
ring_buffer.c ring-buffer: Add stats field for amount read from trace ring buffer 2013-01-30 11:01:53 -05:00
rpm-traces.c PM / Runtime: Introduce trace points for tracing rpm_* functions 2011-09-27 22:53:27 +02:00
trace_branch.c tracing: Replace the static global per_cpu arrays with allocated per_cpu 2013-03-15 00:34:43 -04:00
trace_clock.c Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2013-02-19 17:49:41 -08:00
trace_entries.h Merge branch 'tip/perf/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace into perf/urgent 2012-03-24 08:19:09 +01:00
trace_event_perf.c perf/core improvements and fixes: 2012-08-21 11:27:00 +02:00
trace_events_filter_test.h tracing/filter: Add startup tests for events filter 2011-08-19 14:35:59 -04:00
trace_events_filter.c tracing: Separate out trace events from global variables 2013-03-15 00:34:40 -04:00
trace_events.c tracing: Add rmdir to remove multibuffer instances 2013-03-15 00:34:45 -04:00
trace_export.c tracing: Do not enable function event with enable 2012-05-10 15:55:43 -04:00
trace_functions_graph.c tracing: Replace the static global per_cpu arrays with allocated per_cpu 2013-03-15 00:34:43 -04:00
trace_functions.c tracing: Replace the static global per_cpu arrays with allocated per_cpu 2013-03-15 00:34:43 -04:00
trace_irqsoff.c tracing: Replace the static global per_cpu arrays with allocated per_cpu 2013-03-15 00:34:43 -04:00
trace_kdb.c tracing: Replace the static global per_cpu arrays with allocated per_cpu 2013-03-15 00:34:43 -04:00
trace_kprobe.c tracing: Use irq_work for wake ups and remove *_nowake_*() functions 2012-11-02 10:21:52 -04:00
trace_mmiotrace.c tracing: Replace the static global per_cpu arrays with allocated per_cpu 2013-03-15 00:34:43 -04:00
trace_nop.c
trace_output.c tracing: Format non-nanosec times from tsc clock without a decimal point. 2012-11-13 15:48:40 -05:00
trace_output.h
trace_printk.c tracing: Add percpu buffers for trace_printk() 2012-04-23 21:15:55 -04:00
trace_probe.c tracing: Replace strict_strto* with kstrto* 2012-10-31 16:45:23 -04:00
trace_probe.h uprobes/tracing: Introduce is_trace_uprobe_enabled() 2013-02-08 18:24:30 +01:00
trace_sched_switch.c tracing: Replace the static global per_cpu arrays with allocated per_cpu 2013-03-15 00:34:43 -04:00
trace_sched_wakeup.c tracing: Replace the static global per_cpu arrays with allocated per_cpu 2013-03-15 00:34:43 -04:00
trace_selftest_dynamic.c ftrace: Add self-tests for multiple function trace users 2011-05-18 19:24:51 -04:00
trace_selftest.c ftrace: Fix function tracing recursion self test 2013-01-22 23:37:58 -05:00
trace_stack.c tracing: Remove unneeded checks from the stack tracer 2012-11-19 15:07:13 -05:00
trace_stat.c
trace_stat.h
trace_syscalls.c tracing: Make syscall events suitable for multiple buffers 2013-03-15 00:34:44 -04:00
trace_uprobe.c uprobes/perf: Avoid uprobe_apply() whenever possible 2013-02-08 18:28:08 +01:00
trace.c tracing: Add rmdir to remove multibuffer instances 2013-03-15 00:34:45 -04:00
trace.h tracing: Add rmdir to remove multibuffer instances 2013-03-15 00:34:45 -04:00