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Kirill Smelkov
linux
Commits
eba0daf3
Commit
eba0daf3
authored
22 years ago
by
David S. Miller
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Plain Diff
[SPARC32]: Move get_wchan into processor.c
parent
a807608b
No related merge requests found
Changes
2
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2 changed files
with
37 additions
and
28 deletions
+37
-28
arch/sparc/kernel/process.c
arch/sparc/kernel/process.c
+36
-0
include/asm-sparc/processor.h
include/asm-sparc/processor.h
+1
-28
No files found.
arch/sparc/kernel/process.c
View file @
eba0daf3
...
...
@@ -725,3 +725,39 @@ pid_t kernel_thread(int (*fn)(void *), void * arg, unsigned long flags)
"g1"
,
"g2"
,
"g3"
,
"o0"
,
"o1"
,
"memory"
,
"cc"
);
return
retval
;
}
extern
void
scheduling_functions_start_here
(
void
);
extern
void
scheduling_functions_end_here
(
void
);
unsigned
long
get_wchan
(
struct
task_struct
*
task
)
{
unsigned
long
pc
,
fp
,
bias
=
0
;
unsigned
long
task_base
=
(
unsigned
long
)
task
;
unsigned
long
ret
=
0
;
struct
reg_window
*
rw
;
int
count
=
0
;
if
(
!
task
||
task
==
current
||
task
->
state
==
TASK_RUNNING
)
goto
out
;
fp
=
task
->
thread_info
->
ksp
+
bias
;
do
{
/* Bogus frame pointer? */
if
(
fp
<
(
task_base
+
sizeof
(
struct
task_struct
))
||
fp
>=
(
task_base
+
(
2
*
PAGE_SIZE
)))
break
;
rw
=
(
struct
reg_window
*
)
fp
;
pc
=
rw
->
ins
[
7
];
if
(
pc
<
((
unsigned
long
)
scheduling_functions_start_here
)
||
pc
>=
((
unsigned
long
)
scheduling_functions_end_here
))
{
ret
=
pc
;
goto
out
;
}
fp
=
rw
->
ins
[
6
]
+
bias
;
}
while
(
++
count
<
16
);
out:
return
ret
;
}
This diff is collapsed.
Click to expand it.
include/asm-sparc/processor.h
View file @
eba0daf3
...
...
@@ -139,34 +139,7 @@ extern __inline__ void start_thread(struct pt_regs * regs, unsigned long pc,
#define release_thread(tsk) do { } while(0)
extern
pid_t
kernel_thread
(
int
(
*
fn
)(
void
*
),
void
*
arg
,
unsigned
long
flags
);
#define get_wchan(__TSK) \
({ extern void scheduling_functions_start_here(void); \
extern void scheduling_functions_end_here(void); \
unsigned long pc, fp, bias = 0; \
unsigned long task_base = (unsigned long) (__TSK); \
unsigned long __ret = 0; \
struct reg_window *rw; \
int count = 0; \
if (!(__TSK) || (__TSK) == current || \
(__TSK)->state == TASK_RUNNING) \
goto __out; \
fp = (__TSK)->thread_info->ksp + bias; \
do { \
/* Bogus frame pointer? */
\
if (fp < (task_base + sizeof(struct task_struct)) || \
fp >= (task_base + (2 * PAGE_SIZE))) \
break; \
rw = (struct reg_window *) fp; \
pc = rw->ins[7]; \
if (pc < ((unsigned long) scheduling_functions_start_here) || \
pc >= ((unsigned long) scheduling_functions_end_here)) { \
__ret = pc; \
goto __out; \
} \
fp = rw->ins[6] + bias; \
} while (++count < 16); \
__out: __ret; \
})
extern
unsigned
long
get_wchan
(
struct
task_struct
*
);
#define KSTK_EIP(tsk) ((tsk)->thread.kregs->pc)
#define KSTK_ESP(tsk) ((tsk)->thread.kregs->u_regs[UREG_FP])
...
...
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