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linux
linux-davinci
Commits
9960e9e8
Commit
9960e9e8
authored
Apr 07, 2010
by
David S. Miller
Browse files
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Plain Diff
sparc64: Add function graph tracer support.
Signed-off-by:
David S. Miller
<
davem@davemloft.net
>
parent
a71d1d6b
Changes
10
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Inline
Side-by-side
Showing
10 changed files
with
132 additions
and
15 deletions
+132
-15
arch/sparc/Kconfig
arch/sparc/Kconfig
+2
-0
arch/sparc/kernel/Makefile
arch/sparc/kernel/Makefile
+1
-0
arch/sparc/kernel/ftrace.c
arch/sparc/kernel/ftrace.c
+58
-0
arch/sparc/kernel/irq_64.c
arch/sparc/kernel/irq_64.c
+2
-1
arch/sparc/kernel/kgdb_64.c
arch/sparc/kernel/kgdb_64.c
+2
-1
arch/sparc/kernel/pcr.c
arch/sparc/kernel/pcr.c
+2
-1
arch/sparc/kernel/smp_64.c
arch/sparc/kernel/smp_64.c
+6
-5
arch/sparc/kernel/time_64.c
arch/sparc/kernel/time_64.c
+2
-1
arch/sparc/kernel/vmlinux.lds.S
arch/sparc/kernel/vmlinux.lds.S
+1
-0
arch/sparc/lib/mcount.S
arch/sparc/lib/mcount.S
+56
-6
No files found.
arch/sparc/Kconfig
View file @
9960e9e8
...
...
@@ -37,6 +37,8 @@ config SPARC64
def_bool 64BIT
select ARCH_SUPPORTS_MSI
select HAVE_FUNCTION_TRACER
select HAVE_FUNCTION_GRAPH_TRACER
select HAVE_FUNCTION_GRAPH_FP_TEST
select HAVE_FUNCTION_TRACE_MCOUNT_TEST
select HAVE_KRETPROBES
select HAVE_KPROBES
...
...
arch/sparc/kernel/Makefile
View file @
9960e9e8
...
...
@@ -93,6 +93,7 @@ obj-$(CONFIG_KGDB) += kgdb_$(BITS).o
obj-$(CONFIG_DYNAMIC_FTRACE)
+=
ftrace.o
obj-$(CONFIG_FUNCTION_GRAPH_TRACER)
+=
ftrace.o
obj-$(CONFIG_EARLYFB)
+=
btext.o
obj-$(CONFIG_STACKTRACE)
+=
stacktrace.o
...
...
arch/sparc/kernel/ftrace.c
View file @
9960e9e8
...
...
@@ -91,3 +91,61 @@ int __init ftrace_dyn_arch_init(void *data)
return
0
;
}
#endif
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
#ifdef CONFIG_DYNAMIC_FTRACE
extern
void
ftrace_graph_call
(
void
);
int
ftrace_enable_ftrace_graph_caller
(
void
)
{
unsigned
long
ip
=
(
unsigned
long
)(
&
ftrace_graph_call
);
u32
old
,
new
;
old
=
*
(
u32
*
)
&
ftrace_graph_call
;
new
=
ftrace_call_replace
(
ip
,
(
unsigned
long
)
&
ftrace_graph_caller
);
return
ftrace_modify_code
(
ip
,
old
,
new
);
}
int
ftrace_disable_ftrace_graph_caller
(
void
)
{
unsigned
long
ip
=
(
unsigned
long
)(
&
ftrace_graph_call
);
u32
old
,
new
;
old
=
*
(
u32
*
)
&
ftrace_graph_call
;
new
=
ftrace_call_replace
(
ip
,
(
unsigned
long
)
&
ftrace_stub
);
return
ftrace_modify_code
(
ip
,
old
,
new
);
}
#endif
/* !CONFIG_DYNAMIC_FTRACE */
/*
* Hook the return address and push it in the stack of return addrs
* in current thread info.
*/
unsigned
long
prepare_ftrace_return
(
unsigned
long
parent
,
unsigned
long
self_addr
,
unsigned
long
frame_pointer
)
{
unsigned
long
return_hooker
=
(
unsigned
long
)
&
return_to_handler
;
struct
ftrace_graph_ent
trace
;
if
(
unlikely
(
atomic_read
(
&
current
->
tracing_graph_pause
)))
return
parent
+
8UL
;
if
(
ftrace_push_return_trace
(
parent
,
self_addr
,
&
trace
.
depth
,
frame_pointer
)
==
-
EBUSY
)
return
parent
+
8UL
;
trace
.
func
=
self_addr
;
/* Only trace if the calling function expects to */
if
(
!
ftrace_graph_entry
(
&
trace
))
{
current
->
curr_ret_stack
--
;
return
parent
+
8UL
;
}
return
return_hooker
;
}
#endif
/* CONFIG_FUNCTION_GRAPH_TRACER */
arch/sparc/kernel/irq_64.c
View file @
9960e9e8
...
...
@@ -20,6 +20,7 @@
#include <linux/delay.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/ftrace.h>
#include <linux/irq.h>
#include <asm/ptrace.h>
...
...
@@ -721,7 +722,7 @@ static __attribute__((always_inline)) void restore_hardirq_stack(void *orig_sp)
__asm__
__volatile__
(
"mov %0, %%sp"
:
:
"r"
(
orig_sp
));
}
void
handler_irq
(
int
irq
,
struct
pt_regs
*
regs
)
void
__irq_entry
handler_irq
(
int
irq
,
struct
pt_regs
*
regs
)
{
unsigned
long
pstate
,
bucket_pa
;
struct
pt_regs
*
old_regs
;
...
...
arch/sparc/kernel/kgdb_64.c
View file @
9960e9e8
...
...
@@ -5,6 +5,7 @@
#include <linux/kgdb.h>
#include <linux/kdebug.h>
#include <linux/ftrace.h>
#include <asm/kdebug.h>
#include <asm/ptrace.h>
...
...
@@ -108,7 +109,7 @@ void gdb_regs_to_pt_regs(unsigned long *gdb_regs, struct pt_regs *regs)
}
#ifdef CONFIG_SMP
void
smp_kgdb_capture_client
(
int
irq
,
struct
pt_regs
*
regs
)
void
__irq_entry
smp_kgdb_capture_client
(
int
irq
,
struct
pt_regs
*
regs
)
{
unsigned
long
flags
;
...
...
arch/sparc/kernel/pcr.c
View file @
9960e9e8
...
...
@@ -8,6 +8,7 @@
#include <linux/irq.h>
#include <linux/perf_event.h>
#include <linux/ftrace.h>
#include <asm/pil.h>
#include <asm/pcr.h>
...
...
@@ -34,7 +35,7 @@ unsigned int picl_shift;
* Therefore in such situations we defer the work by signalling
* a lower level cpu IRQ.
*/
void
deferred_pcr_work_irq
(
int
irq
,
struct
pt_regs
*
regs
)
void
__irq_entry
deferred_pcr_work_irq
(
int
irq
,
struct
pt_regs
*
regs
)
{
struct
pt_regs
*
old_regs
;
...
...
arch/sparc/kernel/smp_64.c
View file @
9960e9e8
...
...
@@ -22,6 +22,7 @@
#include <linux/profile.h>
#include <linux/bootmem.h>
#include <linux/vmalloc.h>
#include <linux/ftrace.h>
#include <linux/cpu.h>
#include <asm/head.h>
...
...
@@ -822,13 +823,13 @@ void arch_send_call_function_single_ipi(int cpu)
&
cpumask_of_cpu
(
cpu
));
}
void
smp_call_function_client
(
int
irq
,
struct
pt_regs
*
regs
)
void
__irq_entry
smp_call_function_client
(
int
irq
,
struct
pt_regs
*
regs
)
{
clear_softint
(
1
<<
irq
);
generic_smp_call_function_interrupt
();
}
void
smp_call_function_single_client
(
int
irq
,
struct
pt_regs
*
regs
)
void
__irq_entry
smp_call_function_single_client
(
int
irq
,
struct
pt_regs
*
regs
)
{
clear_softint
(
1
<<
irq
);
generic_smp_call_function_single_interrupt
();
...
...
@@ -964,7 +965,7 @@ void flush_dcache_page_all(struct mm_struct *mm, struct page *page)
put_cpu
();
}
void
smp_new_mmu_context_version_client
(
int
irq
,
struct
pt_regs
*
regs
)
void
__irq_entry
smp_new_mmu_context_version_client
(
int
irq
,
struct
pt_regs
*
regs
)
{
struct
mm_struct
*
mm
;
unsigned
long
flags
;
...
...
@@ -1148,7 +1149,7 @@ void smp_release(void)
*/
extern
void
prom_world
(
int
);
void
smp_penguin_jailcell
(
int
irq
,
struct
pt_regs
*
regs
)
void
__irq_entry
smp_penguin_jailcell
(
int
irq
,
struct
pt_regs
*
regs
)
{
clear_softint
(
1
<<
irq
);
...
...
@@ -1364,7 +1365,7 @@ void smp_send_reschedule(int cpu)
&
cpumask_of_cpu
(
cpu
));
}
void
smp_receive_signal_client
(
int
irq
,
struct
pt_regs
*
regs
)
void
__irq_entry
smp_receive_signal_client
(
int
irq
,
struct
pt_regs
*
regs
)
{
clear_softint
(
1
<<
irq
);
}
...
...
arch/sparc/kernel/time_64.c
View file @
9960e9e8
...
...
@@ -35,6 +35,7 @@
#include <linux/clocksource.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/ftrace.h>
#include <asm/oplib.h>
#include <asm/timer.h>
...
...
@@ -717,7 +718,7 @@ static struct clock_event_device sparc64_clockevent = {
};
static
DEFINE_PER_CPU
(
struct
clock_event_device
,
sparc64_events
);
void
timer_interrupt
(
int
irq
,
struct
pt_regs
*
regs
)
void
__irq_entry
timer_interrupt
(
int
irq
,
struct
pt_regs
*
regs
)
{
struct
pt_regs
*
old_regs
=
set_irq_regs
(
regs
);
unsigned
long
tick_mask
=
tick_ops
->
softint_mask
;
...
...
arch/sparc/kernel/vmlinux.lds.S
View file @
9960e9e8
...
...
@@ -46,6 +46,7 @@ SECTIONS
SCHED_TEXT
LOCK_TEXT
KPROBES_TEXT
IRQENTRY_TEXT
*(.
gnu.warning
)
}
=
0
_etext
=
.
;
...
...
arch/sparc/lib/mcount.S
View file @
9960e9e8
...
...
@@ -26,22 +26,42 @@ mcount:
#else
sethi
%
hi
(
function_trace_stop
),
%
g1
lduw
[%
g1
+
%
lo
(
function_trace_stop
)],
%
g2
brnz
,
pn
%
g2
,
1
f
brnz
,
pn
%
g2
,
2
f
sethi
%
hi
(
ftrace_trace_function
),
%
g1
sethi
%
hi
(
ftrace_stub
),
%
g2
ldx
[%
g1
+
%
lo
(
ftrace_trace_function
)],
%
g1
or
%
g2
,
%
lo
(
ftrace_stub
),
%
g2
cmp
%
g1
,
%
g2
be
,
pn
%
icc
,
1
f
mov
%
i7
,
%
g
2
mov
%
i7
,
%
g
3
save
%
sp
,
-
128
,
%
sp
mov
%
g
2
,
%
o1
mov
%
g
3
,
%
o1
jmpl
%
g1
,
%
o7
mov
%
i7
,
%
o0
ret
restore
/
*
not
reached
*/
1
:
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
sethi
%
hi
(
ftrace_graph_return
),
%
g1
ldx
[%
g1
+
%
lo
(
ftrace_graph_return
)],
%
g3
cmp
%
g2
,
%
g3
bne
,
pn
%
xcc
,
5
f
sethi
%
hi
(
ftrace_graph_entry_stub
),
%
g2
sethi
%
hi
(
ftrace_graph_entry
),
%
g1
or
%
g2
,
%
lo
(
ftrace_graph_entry_stub
),
%
g2
ldx
[%
g1
+
%
lo
(
ftrace_graph_entry
)],
%
g1
cmp
%
g1
,
%
g2
be
,
pt
%
xcc
,
2
f
nop
5
:
mov
%
i7
,
%
g2
mov
%
fp
,
%
g3
save
%
sp
,
-
128
,
%
sp
mov
%
g2
,
%
l0
ba
,
pt
%
xcc
,
ftrace_graph_caller
mov
%
g3
,
%
l1
#endif
2
:
#endif
#endif
retl
...
...
@@ -62,18 +82,48 @@ ftrace_stub:
ftrace_caller
:
sethi
%
hi
(
function_trace_stop
),
%
g1
mov
%
i7
,
%
g2
lduw
[%
g1
+
%
lo
(
function_trace_stop
)],
%
g
3
brnz
,
pn
%
g
3
,
ftrace_stub
nop
lduw
[%
g1
+
%
lo
(
function_trace_stop
)],
%
g
1
brnz
,
pn
%
g
1
,
ftrace_stub
mov
%
fp
,
%
g3
save
%
sp
,
-
128
,
%
sp
mov
%
g2
,
%
o1
mov
%
g2
,
%
l0
mov
%
g3
,
%
l1
.
globl
ftrace_call
ftrace_call
:
call
ftrace_stub
mov
%
i7
,
%
o0
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
.
globl
ftrace_graph_call
ftrace_graph_call
:
call
ftrace_stub
nop
#endif
ret
restore
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
.
size
ftrace_graph_call
,
.
-
ftrace_graph_call
#endif
.
size
ftrace_call
,
.
-
ftrace_call
.
size
ftrace_caller
,
.
-
ftrace_caller
#endif
#endif
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
ENTRY
(
ftrace_graph_caller
)
mov
%
l0
,
%
o0
mov
%
i7
,
%
o1
call
prepare_ftrace_return
mov
%
l1
,
%
o2
ret
restore
%
o0
,
-
8
,
%
i7
END
(
ftrace_graph_caller
)
ENTRY
(
return_to_handler
)
save
%
sp
,
-
128
,
%
sp
call
ftrace_return_to_handler
mov
%
fp
,
%
o0
jmpl
%
o0
+
8
,
%
g0
restore
END
(
return_to_handler
)
#endif
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