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arm64, ftrace: Remove check of obsolete variable function_trace_stop 

Nothing sets function_trace_stop to disable function tracing anymore.
Remove the check for it in the arch code.

arm64 was broken anyway, as it had an ifdef testing
 CONFIG_HAVE_FUNCTION_TRACE_MCOUNT_TEST which is only set if
the arch supports the code (which it obviously did not), and
it was testing a non existent ftrace_trace_stop instead of
function_trace_stop.

Link: http://lkml.kernel.org/r/20140627124421.GP26276@arm.com

Cc: AKASHI Takahiro <takahiro.akashi@linaro.org>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
This commit is contained in:
Steven Rostedt (Red Hat) 2014-06-25 14:41:21 -04:00 committed by Steven Rostedt
parent 6c56524101
commit ac694fda32
1 changed files with 0 additions and 5 deletions
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5
arch/arm64/kernel/entry-ftrace.S
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@ -96,11 +96,6 @@
* - ftrace_graph_caller to set up an exit hook * - ftrace_graph_caller to set up an exit hook
*/ */
ENTRY(_mcount) ENTRY(_mcount)
#ifdef CONFIG_HAVE_FUNCTION_TRACE_MCOUNT_TEST
ldr x0, =ftrace_trace_stop
ldr x0, [x0] // if ftrace_trace_stop
ret // return;
#endif
mcount_enter mcount_enter
ldr x0, =ftrace_trace_function ldr x0, =ftrace_trace_function