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  1. 19 12月, 2008 2 次提交
    • I
      tracing: fix warnings in kernel/trace/trace_sched_switch.c · c71dd42d
      由 Ingo Molnar 提交于 
      these warnings:

  kernel/trace/trace_sched_switch.c: In function ‘tracing_sched_register’:
  kernel/trace/trace_sched_switch.c:96: warning: passing argument 1 of ‘register_trace_sched_wakeup_new’ from incompatible pointer type
  kernel/trace/trace_sched_switch.c:112: warning: passing argument 1 of ‘unregister_trace_sched_wakeup_new’ from incompatible pointer type
  kernel/trace/trace_sched_switch.c: In function ‘tracing_sched_unregister’:
  kernel/trace/trace_sched_switch.c:121: warning: passing argument 1 of ‘unregister_trace_sched_wakeup_new’ from incompatible pointer type

Trigger because sched_wakeup_new tracepoints need the same trace
signature as sched_wakeup - which was changed recently.

Fix it.
Signed-off-by: NIngo Molnar <mingo@elte.hu>
      c71dd42d
    • I
      tracing: fix warning in kernel/trace/trace.c · 3bddb9a3
      由 Ingo Molnar 提交于 
      this warning:

  kernel/trace/trace.c: In function ‘print_lat_fmt’:
  kernel/trace/trace.c:1826: warning: unused variable ‘state’

Triggers because 'state' has become unused - remove it.
Signed-off-by: NIngo Molnar <mingo@elte.hu>
      3bddb9a3
  3. 18 12月, 2008 4 次提交
  5. 17 12月, 2008 5 次提交
  7. 16 12月, 2008 1 次提交
  9. 12 12月, 2008 12 次提交
  11. 08 12月, 2008 6 次提交
  13. 05 12月, 2008 5 次提交
  15. 04 12月, 2008 5 次提交
    • F
      tracing/function-graph-tracer: handle ftrace_printk entries · 1fd8f2a3
      由 Frederic Weisbecker 提交于 
      Handle the TRACE_PRINT entries from the function grapg tracer
and output them as a C comment just below the function that called
it, as if it was a comment inside this function.

Example with an ftrace_printk inside might_sleep() function:

void __might_sleep(char *file, int line)
{
	static unsigned long prev_jiffy;	/* ratelimiting */

	ftrace_printk("Hi I'm a comment in might_sleep() :-)");

A chunk of a resulting trace:

 0)               |        _reiserfs_free_block() {
 0)               |          reiserfs_read_bitmap_block() {
 0)               |            __bread() {
 0)               |              __getblk() {
 0)               |                __find_get_block() {
 0)   0.698 us    |                  mark_page_accessed();
 0)   2.267 us    |                }
 0)               |                __might_sleep() {
 0)               |                  /* Hi I'm a comment in might_sleep() :-) */
 0)   1.321 us    |                }
 0)   5.872 us    |              }
 0)   7.313 us    |            }
 0)   8.718 us    |          }

And this patch brings two minor fixes:

- The newline after a switch-out task has disappeared
- The "|" sign just before the cpu number on task-switch has been deleted.

 0)   0.616 us    |                pick_next_task_rt();
 0)   1.457 us    |                _spin_trylock();
 0)   0.653 us    |                _spin_unlock();
 0)   0.728 us    |                _spin_trylock();
 0)   0.631 us    |                _spin_unlock();
 0)   0.729 us    |                native_load_sp0();
 0)   0.593 us    |                native_load_tls();
 ------------------------------------------
 0)    cat-2834    =>   migrati-3
 ------------------------------------------

 0)               |    finish_task_switch() {
 0)   0.841 us    |      _spin_unlock_irq();
 0)   0.616 us    |      post_schedule_rt();
 0)   3.882 us    |    }
Signed-off-by: NFrederic Weisbecker <fweisbec@gmail.com>
Acked-by: NSteven Rostedt <rostedt@goodmis.org>
Signed-off-by: NIngo Molnar <mingo@elte.hu>
      1fd8f2a3
    • L
      ftrace: avoid duplicated function when writing set_graph_function · faec2ec5
      由 Liming Wang 提交于 
      Impact: fix a bug in function filter setting

when writing function to set_graph_function, we should check whether it
has existed in set_graph_function to avoid duplicating.
Signed-off-by: NLiming Wang <liming.wang@windriver.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>
      faec2ec5
    • I
      tracing: fix typo and missing inline function · 6b253930
      由 Ingo Molnar 提交于 
      Impact: fix build bugs
Signed-off-by: NIngo Molnar <mingo@elte.hu>
      6b253930
    • S
      ftrace: add ability to only trace swapper tasks · e32d8956
      由 Steven Rostedt 提交于 
      Impact: new feature

This patch lets the swapper tasks of all CPUS be filtered by the
set_ftrace_pid file.

If '0' is echoed into this file, then all the idle tasks (aka swapper)
is flagged to be traced.  This affects all CPU idle tasks.
Signed-off-by: NSteven Rostedt <srostedt@redhat.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>
      e32d8956
    • S
      ftrace: use struct pid · 978f3a45
      由 Steven Rostedt 提交于 
      Impact: clean up, extend PID filtering to PID namespaces

Eric Biederman suggested using the struct pid for filtering on
pids in the kernel. This patch is based off of a demonstration
of an implementation that Eric sent me in an email.
Signed-off-by: NSteven Rostedt <srostedt@redhat.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>
      978f3a45