[PATCH]ftrace:fix a typo in ftrace.txt

[Yang Hongyang]

'echo ftrace' no longer supported in current kernel,
use 'echo function' instead.

Signed-off-by: Yang Hongyang <yanghy@xxxxxxxxxxxxxx>

---
 Documentation/trace/ftrace.txt |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/Documentation/trace/ftrace.txt b/Documentation/trace/ftrace.txt
index 8179692..bab3040 100644
--- a/Documentation/trace/ftrace.txt
+++ b/Documentation/trace/ftrace.txt
@@ -1625,7 +1625,7 @@ If I am only interested in sys_nanosleep and hrtimer_interrupt:
 
  # echo sys_nanosleep hrtimer_interrupt \
 		> set_ftrace_filter
- # echo ftrace > current_tracer
+ # echo function > current_tracer
  # echo 1 > tracing_enabled
  # usleep 1
  # echo 0 > tracing_enabled
-- 
1.6.5.2

-- 
Regards
Yang Hongyang
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