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Kirill Smelkov
linux
Commits
26de313f
Commit
26de313f
authored
21 years ago
by
Russell King
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[ARM] Pass prev task_struct through __switch_to
parent
c2133c96
No related merge requests found
Changes
3
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3 changed files
with
10 additions
and
10 deletions
+10
-10
arch/arm/kernel/entry-armv.S
arch/arm/kernel/entry-armv.S
+4
-4
arch/arm/kernel/entry-common.S
arch/arm/kernel/entry-common.S
+0
-1
include/asm-arm/system.h
include/asm-arm/system.h
+6
-5
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arch/arm/kernel/entry-armv.S
View file @
26de313f
...
@@ -997,11 +997,11 @@ ENTRY(fp_enter)
...
@@ -997,11 +997,11 @@ ENTRY(fp_enter)
*
previous
and
next
are
guaranteed
not
to
be
the
same
.
*
previous
and
next
are
guaranteed
not
to
be
the
same
.
*/
*/
ENTRY
(
__switch_to
)
ENTRY
(
__switch_to
)
add
ip
,
r
0
,
#
TI_CPU_SAVE
add
ip
,
r
1
,
#
TI_CPU_SAVE
ldr
r
2
,
[
r1
,
#
TI_CPU_DOMAIN
]!
ldr
r
3
,
[
r2
,
#
TI_CPU_DOMAIN
]!
stmia
ip
,
{
r4
-
sl
,
fp
,
sp
,
lr
}
@
Store
most
regs
on
stack
stmia
ip
,
{
r4
-
sl
,
fp
,
sp
,
lr
}
@
Store
most
regs
on
stack
mcr
p15
,
0
,
r
2
,
c3
,
c
0
@
Set
domain
register
mcr
p15
,
0
,
r
3
,
c3
,
c0
,
0
@
Set
domain
register
ldmib
r
1
,
{
r4
-
sl
,
fp
,
sp
,
pc
}
@
Load
all
regs
saved
previously
ldmib
r
2
,
{
r4
-
sl
,
fp
,
sp
,
pc
}
@
Load
all
regs
saved
previously
__INIT
__INIT
/*
/*
...
...
This diff is collapsed.
Click to expand it.
arch/arm/kernel/entry-common.S
View file @
26de313f
...
@@ -75,7 +75,6 @@ no_work_pending:
...
@@ -75,7 +75,6 @@ no_work_pending:
*
This
is
how
we
return
from
a
fork
.
*
This
is
how
we
return
from
a
fork
.
*/
*/
ENTRY
(
ret_from_fork
)
ENTRY
(
ret_from_fork
)
ldr
r0
,
[
r0
,
#
TI_TASK
]
bl
schedule_tail
bl
schedule_tail
get_thread_info
tsk
get_thread_info
tsk
ldr
r1
,
[
tsk
,
#
TI_FLAGS
]
@
check
for
syscall
tracing
ldr
r1
,
[
tsk
,
#
TI_FLAGS
]
@
check
for
syscall
tracing
...
...
This diff is collapsed.
Click to expand it.
include/asm-arm/system.h
View file @
26de313f
...
@@ -65,12 +65,13 @@ extern int cpu_architecture(void);
...
@@ -65,12 +65,13 @@ extern int cpu_architecture(void);
* The `mb' is to tell GCC not to cache `current' across this call.
* The `mb' is to tell GCC not to cache `current' across this call.
*/
*/
struct
thread_info
;
struct
thread_info
;
extern
struct
thread_info
*
__switch_to
(
struct
thread_info
*
,
struct
thread_info
*
);
struct
task_struct
;
extern
struct
task_struct
*
__switch_to
(
struct
task_struct
*
,
struct
thread_info
*
,
struct
thread_info
*
);
#define switch_to(prev,next,last) \
#define switch_to(prev,next,last)
\
do {
\
do {
\
__switch_to(
prev->thread_info,next->thread_info); \
last = __switch_to(prev,
prev->thread_info,next->thread_info); \
mb(); \
mb();
\
} while (0)
} while (0)
#ifdef CONFIG_SMP
#ifdef CONFIG_SMP
...
...
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