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Oleg Nesterov 229c4ef8ae ftrace: do_each_pid_task() needs rcu lock 
"ftrace: use struct pid" commit 978f3a45d9
converted ftrace_pid_trace to "struct pid*".

But we can't use do_each_pid_task() without rcu_read_lock() even if
we know the pid itself can't go away (it was pinned in ftrace_pid_write).
The exiting task can detach itself from this pid at any moment.

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
 		2009-02-03 22:50:58 +01:00
..
Kconfig trace: add a way to enable or disable the stack tracer 2008-12-18 12:56:24 +01:00
Makefile x86, bts, ftrace: adapt the hw-branch-tracer to the ds.c interface 2008-12-12 08:08:14 +01:00
ftrace.c ftrace: do_each_pid_task() needs rcu lock 2009-02-03 22:50:58 +01:00
ring_buffer.c ring-buffer: reset timestamps when ring buffer is reset 2009-01-22 10:31:58 +01:00
trace.c trace: set max latency variable to zero on default 2009-01-21 15:21:30 +01:00
trace.h cpumask: convert kernel trace functions further 2009-01-01 10:12:23 +10:30
trace_boot.c cpumask: convert kernel trace functions further 2009-01-01 10:12:23 +10:30
trace_branch.c ftrace: replace raw_local_irq_save with local_irq_save 2008-12-03 08:56:19 +01:00
trace_functions.c ftrace: introduce tracing_reset_online_cpus() helper 2008-12-19 16:29:34 +01:00
trace_functions_graph.c cpumask: convert kernel trace functions further 2009-01-01 10:12:23 +10:30
trace_hw_branches.c cpumask: convert kernel trace functions further 2009-01-01 10:12:23 +10:30
trace_irqsoff.c trace: set max latency variable to zero on default 2009-01-21 15:21:30 +01:00
trace_mmiotrace.c ftrace: introduce tracing_reset_online_cpus() helper 2008-12-19 16:29:34 +01:00
trace_nop.c tracing/ftrace: make nop tracer using tracer flags 2008-11-18 11:10:59 +01:00
trace_power.c cpumask: convert kernel trace functions further 2009-01-01 10:12:23 +10:30
trace_sched_switch.c sched, trace: update trace_sched_wakeup() 2008-12-25 13:10:21 +01:00
trace_sched_wakeup.c trace: set max latency variable to zero on default 2009-01-21 15:21:30 +01:00
trace_selftest.c tracing/ftrace: change the type of the init() callback 2008-11-16 07:55:23 +01:00
trace_selftest_dynamic.c ftrace: fix dynamic ftrace selftest 2008-05-23 21:13:23 +02:00
trace_stack.c trace: better use of stack_trace_enabled for boot up code 2008-12-18 12:56:56 +01:00
trace_sysprof.c cpumask: convert kernel trace functions 2009-01-01 10:12:22 +10:30