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Kirill Smelkov
linux
Commits
aebfef03
Commit
aebfef03
authored
15 years ago
by
Mike Frysinger
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Blackfin: implement ftrace mcount test
Signed-off-by:
Mike Frysinger
<
vapier@gentoo.org
>
parent
6388d14e
Changes
2
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11 additions
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1 deletion
+11
-1
arch/blackfin/Kconfig
arch/blackfin/Kconfig
+1
-0
arch/blackfin/kernel/ftrace-entry.S
arch/blackfin/kernel/ftrace-entry.S
+10
-1
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arch/blackfin/Kconfig
View file @
aebfef03
...
...
@@ -25,6 +25,7 @@ config BLACKFIN
def_bool y
select HAVE_FUNCTION_GRAPH_TRACER
select HAVE_FUNCTION_TRACER
select HAVE_FUNCTION_TRACE_MCOUNT_TEST
select HAVE_IDE
select HAVE_KERNEL_GZIP if RAMKERNEL
select HAVE_KERNEL_BZIP2 if RAMKERNEL
...
...
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arch/blackfin/kernel/ftrace-entry.S
View file @
aebfef03
/*
*
mcount
and
friends
--
ftrace
stuff
*
*
Copyright
(
C
)
2009
Analog
Devices
Inc
.
*
Copyright
(
C
)
2009
-
2010
Analog
Devices
Inc
.
*
Licensed
under
the
GPL
-
2
or
later
.
*/
...
...
@@ -21,6 +21,15 @@
*
function
will
be
waiting
there
.
mmmm
pie
.
*/
ENTRY
(
__mcount
)
#ifdef CONFIG_HAVE_FUNCTION_TRACE_MCOUNT_TEST
/
*
optional
micro
optimization
:
return
if
stopped
*/
p1.l
=
_function_trace_stop
;
p1.h
=
_function_trace_stop
;
r3
=
[
p1
]
;
cc
=
r3
==
0
;
if
!
cc
jump
_ftrace_stub
(
bp
)
;
#endif
/
*
save
third
function
arg
early
so
we
can
do
testing
below
*/
[--
sp
]
=
r2
;
...
...
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