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Kirill Smelkov
linux
Commits
6bd25e78
Commit
6bd25e78
authored
Feb 20, 2006
by
Linus Torvalds
Browse files
Options
Browse Files
Download
Plain Diff
Merge
git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc-merge
parents
35e622a6
496b7a51
Changes
10
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Inline
Side-by-side
Showing
10 changed files
with
108 additions
and
246 deletions
+108
-246
arch/powerpc/kernel/head_64.S
arch/powerpc/kernel/head_64.S
+1
-3
arch/powerpc/kernel/lparcfg.c
arch/powerpc/kernel/lparcfg.c
+4
-2
arch/powerpc/kernel/ppc_ksyms.c
arch/powerpc/kernel/ppc_ksyms.c
+0
-16
arch/powerpc/kernel/setup_64.c
arch/powerpc/kernel/setup_64.c
+2
-2
arch/powerpc/kernel/sys_ppc32.c
arch/powerpc/kernel/sys_ppc32.c
+0
-4
arch/powerpc/kernel/time.c
arch/powerpc/kernel/time.c
+99
-183
arch/powerpc/platforms/pseries/smp.c
arch/powerpc/platforms/pseries/smp.c
+1
-1
arch/ppc/kernel/ppc_ksyms.c
arch/ppc/kernel/ppc_ksyms.c
+0
-8
arch/ppc/xmon/start.c
arch/ppc/xmon/start.c
+1
-14
include/asm-ppc/machdep.h
include/asm-ppc/machdep.h
+0
-13
No files found.
arch/powerpc/kernel/head_64.S
View file @
6bd25e78
...
...
@@ -157,8 +157,7 @@ _GLOBAL(__secondary_hold)
SET_REG_IMMEDIATE
(
r4
,
.
hmt_init
)
mtctr
r4
bctr
#else
#ifdef CONFIG_SMP
#elif defined(CONFIG_SMP) || defined(CONFIG_KEXEC)
LOAD_REG_IMMEDIATE
(
r4
,
.
pSeries_secondary_smp_init
)
mtctr
r4
mr
r3
,
r24
...
...
@@ -166,7 +165,6 @@ _GLOBAL(__secondary_hold)
#else
BUG_OPCODE
#endif
#endif
/*
This
value
is
used
to
mark
exception
frames
on
the
stack
.
*/
.
section
".toc"
,
"aw"
...
...
arch/powerpc/kernel/lparcfg.c
View file @
6bd25e78
...
...
@@ -341,7 +341,7 @@ static int lparcfg_data(struct seq_file *m, void *v)
const
char
*
system_id
=
""
;
unsigned
int
*
lp_index_ptr
,
lp_index
=
0
;
struct
device_node
*
rtas_node
;
int
*
lrdrp
;
int
*
lrdrp
=
NULL
;
rootdn
=
find_path_device
(
"/"
);
if
(
rootdn
)
{
...
...
@@ -362,7 +362,9 @@ static int lparcfg_data(struct seq_file *m, void *v)
seq_printf
(
m
,
"partition_id=%d
\n
"
,
(
int
)
lp_index
);
rtas_node
=
find_path_device
(
"/rtas"
);
lrdrp
=
(
int
*
)
get_property
(
rtas_node
,
"ibm,lrdr-capacity"
,
NULL
);
if
(
rtas_node
)
lrdrp
=
(
int
*
)
get_property
(
rtas_node
,
"ibm,lrdr-capacity"
,
NULL
);
if
(
lrdrp
==
NULL
)
{
partition_potential_processors
=
vdso_data
->
processorCount
;
...
...
arch/powerpc/kernel/ppc_ksyms.c
View file @
6bd25e78
...
...
@@ -79,15 +79,8 @@ EXPORT_SYMBOL(sys_sigreturn);
EXPORT_SYMBOL
(
strcpy
);
EXPORT_SYMBOL
(
strncpy
);
EXPORT_SYMBOL
(
strcat
);
EXPORT_SYMBOL
(
strncat
);
EXPORT_SYMBOL
(
strchr
);
EXPORT_SYMBOL
(
strrchr
);
EXPORT_SYMBOL
(
strpbrk
);
EXPORT_SYMBOL
(
strstr
);
EXPORT_SYMBOL
(
strlen
);
EXPORT_SYMBOL
(
strnlen
);
EXPORT_SYMBOL
(
strcmp
);
EXPORT_SYMBOL
(
strncmp
);
EXPORT_SYMBOL
(
strcasecmp
);
EXPORT_SYMBOL
(
csum_partial
);
...
...
@@ -185,9 +178,6 @@ EXPORT_SYMBOL(adb_try_handler_change);
EXPORT_SYMBOL
(
cuda_request
);
EXPORT_SYMBOL
(
cuda_poll
);
#endif
/* CONFIG_ADB_CUDA */
#ifdef CONFIG_PPC_PMAC
EXPORT_SYMBOL
(
sys_ctrler
);
#endif
#ifdef CONFIG_VT
EXPORT_SYMBOL
(
kd_mksound
);
#endif
...
...
@@ -205,7 +195,6 @@ EXPORT_SYMBOL(__lshrdi3);
EXPORT_SYMBOL
(
memcpy
);
EXPORT_SYMBOL
(
memset
);
EXPORT_SYMBOL
(
memmove
);
EXPORT_SYMBOL
(
memscan
);
EXPORT_SYMBOL
(
memcmp
);
EXPORT_SYMBOL
(
memchr
);
...
...
@@ -214,7 +203,6 @@ EXPORT_SYMBOL(screen_info);
#endif
#ifdef CONFIG_PPC32
EXPORT_SYMBOL
(
__delay
);
EXPORT_SYMBOL
(
timer_interrupt
);
EXPORT_SYMBOL
(
irq_desc
);
EXPORT_SYMBOL
(
tb_ticks_per_jiffy
);
...
...
@@ -222,10 +210,6 @@ EXPORT_SYMBOL(console_drivers);
EXPORT_SYMBOL
(
cacheable_memcpy
);
#endif
EXPORT_SYMBOL
(
__up
);
EXPORT_SYMBOL
(
__down
);
EXPORT_SYMBOL
(
__down_interruptible
);
#ifdef CONFIG_8xx
EXPORT_SYMBOL
(
cpm_install_handler
);
EXPORT_SYMBOL
(
cpm_free_handler
);
...
...
arch/powerpc/kernel/setup_64.c
View file @
6bd25e78
...
...
@@ -311,8 +311,6 @@ void smp_release_cpus(void)
DBG
(
" <- smp_release_cpus()
\n
"
);
}
#else
#define smp_release_cpus()
#endif
/* CONFIG_SMP || CONFIG_KEXEC */
/*
...
...
@@ -473,10 +471,12 @@ void __init setup_system(void)
check_smt_enabled
();
smp_setup_cpu_maps
();
#ifdef CONFIG_SMP
/* Release secondary cpus out of their spinloops at 0x60 now that
* we can map physical -> logical CPU ids
*/
smp_release_cpus
();
#endif
printk
(
"Starting Linux PPC64 %s
\n
"
,
system_utsname
.
version
);
...
...
arch/powerpc/kernel/sys_ppc32.c
View file @
6bd25e78
...
...
@@ -176,7 +176,6 @@ struct timex32 {
};
extern
int
do_adjtimex
(
struct
timex
*
);
extern
void
ppc_adjtimex
(
void
);
asmlinkage
long
compat_sys_adjtimex
(
struct
timex32
__user
*
utp
)
{
...
...
@@ -209,9 +208,6 @@ asmlinkage long compat_sys_adjtimex(struct timex32 __user *utp)
ret
=
do_adjtimex
(
&
txc
);
/* adjust the conversion of TB to time of day to track adjtimex */
ppc_adjtimex
();
if
(
put_user
(
txc
.
modes
,
&
utp
->
modes
)
||
__put_user
(
txc
.
offset
,
&
utp
->
offset
)
||
__put_user
(
txc
.
freq
,
&
utp
->
freq
)
||
...
...
arch/powerpc/kernel/time.c
View file @
6bd25e78
...
...
@@ -50,6 +50,7 @@
#include <linux/security.h>
#include <linux/percpu.h>
#include <linux/rtc.h>
#include <linux/jiffies.h>
#include <asm/io.h>
#include <asm/processor.h>
...
...
@@ -99,7 +100,15 @@ EXPORT_SYMBOL(tb_ticks_per_usec);
unsigned
long
tb_ticks_per_sec
;
u64
tb_to_xs
;
unsigned
tb_to_us
;
unsigned
long
processor_freq
;
#define TICKLEN_SCALE (SHIFT_SCALE - 10)
u64
last_tick_len
;
/* units are ns / 2^TICKLEN_SCALE */
u64
ticklen_to_xs
;
/* 0.64 fraction */
/* If last_tick_len corresponds to about 1/HZ seconds, then
last_tick_len << TICKLEN_SHIFT will be about 2^63. */
#define TICKLEN_SHIFT (63 - 30 - TICKLEN_SCALE + SHIFT_HZ)
DEFINE_SPINLOCK
(
rtc_lock
);
EXPORT_SYMBOL_GPL
(
rtc_lock
);
...
...
@@ -113,10 +122,6 @@ extern unsigned long wall_jiffies;
extern
struct
timezone
sys_tz
;
static
long
timezone_offset
;
void
ppc_adjtimex
(
void
);
static
unsigned
adjusting_time
=
0
;
unsigned
long
ppc_proc_freq
;
unsigned
long
ppc_tb_freq
;
...
...
@@ -178,8 +183,7 @@ static __inline__ void timer_check_rtc(void)
*/
if
(
ppc_md
.
set_rtc_time
&&
ntp_synced
()
&&
xtime
.
tv_sec
-
last_rtc_update
>=
659
&&
abs
((
xtime
.
tv_nsec
/
1000
)
-
(
1000000
-
1000000
/
HZ
))
<
500000
/
HZ
&&
jiffies
-
wall_jiffies
==
1
)
{
abs
((
xtime
.
tv_nsec
/
1000
)
-
(
1000000
-
1000000
/
HZ
))
<
500000
/
HZ
)
{
struct
rtc_time
tm
;
to_tm
(
xtime
.
tv_sec
+
1
+
timezone_offset
,
&
tm
);
tm
.
tm_year
-=
1900
;
...
...
@@ -226,15 +230,14 @@ void do_gettimeofday(struct timeval *tv)
if
(
__USE_RTC
())
{
/* do this the old way */
unsigned
long
flags
,
seq
;
unsigned
int
sec
,
nsec
,
usec
,
lost
;
unsigned
int
sec
,
nsec
,
usec
;
do
{
seq
=
read_seqbegin_irqsave
(
&
xtime_lock
,
flags
);
sec
=
xtime
.
tv_sec
;
nsec
=
xtime
.
tv_nsec
+
tb_ticks_since
(
tb_last_stamp
);
lost
=
jiffies
-
wall_jiffies
;
}
while
(
read_seqretry_irqrestore
(
&
xtime_lock
,
seq
,
flags
));
usec
=
nsec
/
1000
+
lost
*
(
1000000
/
HZ
)
;
usec
=
nsec
/
1000
;
while
(
usec
>=
1000000
)
{
usec
-=
1000000
;
++
sec
;
...
...
@@ -248,23 +251,6 @@ void do_gettimeofday(struct timeval *tv)
EXPORT_SYMBOL
(
do_gettimeofday
);
/* Synchronize xtime with do_gettimeofday */
static
inline
void
timer_sync_xtime
(
unsigned
long
cur_tb
)
{
#ifdef CONFIG_PPC64
/* why do we do this? */
struct
timeval
my_tv
;
__do_gettimeofday
(
&
my_tv
,
cur_tb
);
if
(
xtime
.
tv_sec
<=
my_tv
.
tv_sec
)
{
xtime
.
tv_sec
=
my_tv
.
tv_sec
;
xtime
.
tv_nsec
=
my_tv
.
tv_usec
*
1000
;
}
#endif
}
/*
* There are two copies of tb_to_xs and stamp_xsec so that no
* lock is needed to access and use these values in
...
...
@@ -323,15 +309,30 @@ static __inline__ void timer_recalc_offset(u64 cur_tb)
{
unsigned
long
offset
;
u64
new_stamp_xsec
;
u64
tlen
,
t2x
;
if
(
__USE_RTC
())
return
;
tlen
=
current_tick_length
();
offset
=
cur_tb
-
do_gtod
.
varp
->
tb_orig_stamp
;
if
((
offset
&
0x80000000u
)
==
0
)
if
(
tlen
==
last_tick_len
&&
offset
<
0x80000000u
)
{
/* check that we're still in sync; if not, resync */
struct
timeval
tv
;
__do_gettimeofday
(
&
tv
,
cur_tb
);
if
(
tv
.
tv_sec
<=
xtime
.
tv_sec
&&
(
tv
.
tv_sec
<
xtime
.
tv_sec
||
tv
.
tv_usec
*
1000
<=
xtime
.
tv_nsec
))
return
;
new_stamp_xsec
=
do_gtod
.
varp
->
stamp_xsec
+
mulhdu
(
offset
,
do_gtod
.
varp
->
tb_to_xs
);
update_gtod
(
cur_tb
,
new_stamp_xsec
,
do_gtod
.
varp
->
tb_to_xs
);
}
if
(
tlen
!=
last_tick_len
)
{
t2x
=
mulhdu
(
tlen
<<
TICKLEN_SHIFT
,
ticklen_to_xs
);
last_tick_len
=
tlen
;
}
else
t2x
=
do_gtod
.
varp
->
tb_to_xs
;
new_stamp_xsec
=
(
u64
)
xtime
.
tv_nsec
*
XSEC_PER_SEC
;
do_div
(
new_stamp_xsec
,
1000000000
);
new_stamp_xsec
+=
(
u64
)
xtime
.
tv_sec
*
XSEC_PER_SEC
;
update_gtod
(
cur_tb
,
new_stamp_xsec
,
t2x
);
}
#ifdef CONFIG_SMP
...
...
@@ -462,13 +463,10 @@ void timer_interrupt(struct pt_regs * regs)
write_seqlock
(
&
xtime_lock
);
tb_last_jiffy
+=
tb_ticks_per_jiffy
;
tb_last_stamp
=
per_cpu
(
last_jiffy
,
cpu
);
timer_recalc_offset
(
tb_last_jiffy
);
do_timer
(
regs
);
timer_
sync_xtime
(
tb_last_jiffy
);
timer_
recalc_offset
(
tb_last_jiffy
);
timer_check_rtc
();
write_sequnlock
(
&
xtime_lock
);
if
(
adjusting_time
&&
(
time_adjust
==
0
))
ppc_adjtimex
();
}
next_dec
=
tb_ticks_per_jiffy
-
ticks
;
...
...
@@ -492,16 +490,18 @@ void timer_interrupt(struct pt_regs * regs)
void
wakeup_decrementer
(
void
)
{
int
i
;
unsigned
long
ticks
;
set_dec
(
tb_ticks_per_jiffy
);
/*
*
We don't expect this to be called on a machine with a 601
,
* so
using get_tbl is fine
.
*
The timebase gets saved on sleep and restored on wakeup
,
* so
all we need to do is to reset the decrementer
.
*/
tb_last_stamp
=
tb_last_jiffy
=
get_tb
();
for_each_cpu
(
i
)
per_cpu
(
last_jiffy
,
i
)
=
tb_last_stamp
;
ticks
=
tb_ticks_since
(
__get_cpu_var
(
last_jiffy
));
if
(
ticks
<
tb_ticks_per_jiffy
)
ticks
=
tb_ticks_per_jiffy
-
ticks
;
else
ticks
=
1
;
set_dec
(
ticks
);
}
#ifdef CONFIG_SMP
...
...
@@ -541,8 +541,8 @@ int do_settimeofday(struct timespec *tv)
time_t
wtm_sec
,
new_sec
=
tv
->
tv_sec
;
long
wtm_nsec
,
new_nsec
=
tv
->
tv_nsec
;
unsigned
long
flags
;
long
int
tb_delta
;
u
64
new_xsec
,
tb_delta_xs
;
u64
new_xsec
;
u
nsigned
long
tb_delta
;
if
((
unsigned
long
)
tv
->
tv_nsec
>=
NSEC_PER_SEC
)
return
-
EINVAL
;
...
...
@@ -563,9 +563,19 @@ int do_settimeofday(struct timespec *tv)
first_settimeofday
=
0
;
}
#endif
/*
* Subtract off the number of nanoseconds since the
* beginning of the last tick.
* Note that since we don't increment jiffies_64 anywhere other
* than in do_timer (since we don't have a lost tick problem),
* wall_jiffies will always be the same as jiffies,
* and therefore the (jiffies - wall_jiffies) computation
* has been removed.
*/
tb_delta
=
tb_ticks_since
(
tb_last_stamp
);
tb_delta
+=
(
jiffies
-
wall_jiffies
)
*
tb_ticks_per_jiffy
;
tb_delta_xs
=
mulhdu
(
tb_delta
,
do_gtod
.
varp
->
tb_to_xs
);
tb_delta
=
mulhdu
(
tb_delta
,
do_gtod
.
varp
->
tb_to_xs
);
/* in xsec */
new_nsec
-=
SCALE_XSEC
(
tb_delta
,
1000000000
);
wtm_sec
=
wall_to_monotonic
.
tv_sec
+
(
xtime
.
tv_sec
-
new_sec
);
wtm_nsec
=
wall_to_monotonic
.
tv_nsec
+
(
xtime
.
tv_nsec
-
new_nsec
);
...
...
@@ -580,12 +590,12 @@ int do_settimeofday(struct timespec *tv)
ntp_clear
();
new_xsec
=
0
;
if
(
new_
n
sec
!=
0
)
{
new_xsec
=
(
u64
)
new_nsec
*
XSEC_PER_SEC
;
new_xsec
=
xtime
.
tv_nsec
;
if
(
new_
x
sec
!=
0
)
{
new_xsec
*=
XSEC_PER_SEC
;
do_div
(
new_xsec
,
NSEC_PER_SEC
);
}
new_xsec
+=
(
u64
)
new_sec
*
XSEC_PER_SEC
-
tb_delta_xs
;
new_xsec
+=
(
u64
)
xtime
.
tv_sec
*
XSEC_PER_SEC
;
update_gtod
(
tb_last_jiffy
,
new_xsec
,
do_gtod
.
varp
->
tb_to_xs
);
vdso_data
->
tz_minuteswest
=
sys_tz
.
tz_minuteswest
;
...
...
@@ -671,7 +681,7 @@ void __init time_init(void)
unsigned
long
flags
;
unsigned
long
tm
=
0
;
struct
div_result
res
;
u64
scale
;
u64
scale
,
x
;
unsigned
shift
;
if
(
ppc_md
.
time_init
!=
NULL
)
...
...
@@ -693,11 +703,36 @@ void __init time_init(void)
}
tb_ticks_per_jiffy
=
ppc_tb_freq
/
HZ
;
tb_ticks_per_sec
=
tb_ticks_per_jiffy
*
HZ
;
tb_ticks_per_sec
=
ppc_tb_freq
;
tb_ticks_per_usec
=
ppc_tb_freq
/
1000000
;
tb_to_us
=
mulhwu_scale_factor
(
ppc_tb_freq
,
1000000
);
div128_by_32
(
1024
*
1024
,
0
,
tb_ticks_per_sec
,
&
res
);
tb_to_xs
=
res
.
result_low
;
/*
* Calculate the length of each tick in ns. It will not be
* exactly 1e9/HZ unless ppc_tb_freq is divisible by HZ.
* We compute 1e9 * tb_ticks_per_jiffy / ppc_tb_freq,
* rounded up.
*/
x
=
(
u64
)
NSEC_PER_SEC
*
tb_ticks_per_jiffy
+
ppc_tb_freq
-
1
;
do_div
(
x
,
ppc_tb_freq
);
tick_nsec
=
x
;
last_tick_len
=
x
<<
TICKLEN_SCALE
;
/*
* Compute ticklen_to_xs, which is a factor which gets multiplied
* by (last_tick_len << TICKLEN_SHIFT) to get a tb_to_xs value.
* It is computed as:
* ticklen_to_xs = 2^N / (tb_ticks_per_jiffy * 1e9)
* where N = 64 + 20 - TICKLEN_SCALE - TICKLEN_SHIFT
* so as to give the result as a 0.64 fixed-point fraction.
*/
div128_by_32
(
1ULL
<<
(
64
+
20
-
TICKLEN_SCALE
-
TICKLEN_SHIFT
),
0
,
tb_ticks_per_jiffy
,
&
res
);
div128_by_32
(
res
.
result_high
,
res
.
result_low
,
NSEC_PER_SEC
,
&
res
);
ticklen_to_xs
=
res
.
result_low
;
/* Compute tb_to_xs from tick_nsec */
tb_to_xs
=
mulhdu
(
last_tick_len
<<
TICKLEN_SHIFT
,
ticklen_to_xs
);
/*
* Compute scale factor for sched_clock.
...
...
@@ -724,6 +759,14 @@ void __init time_init(void)
tm
=
get_boot_time
();
write_seqlock_irqsave
(
&
xtime_lock
,
flags
);
/* If platform provided a timezone (pmac), we correct the time */
if
(
timezone_offset
)
{
sys_tz
.
tz_minuteswest
=
-
timezone_offset
/
60
;
sys_tz
.
tz_dsttime
=
0
;
tm
-=
timezone_offset
;
}
xtime
.
tv_sec
=
tm
;
xtime
.
tv_nsec
=
0
;
do_gtod
.
varp
=
&
do_gtod
.
vars
[
0
];
...
...
@@ -738,18 +781,11 @@ void __init time_init(void)
vdso_data
->
tb_orig_stamp
=
tb_last_jiffy
;
vdso_data
->
tb_update_count
=
0
;
vdso_data
->
tb_ticks_per_sec
=
tb_ticks_per_sec
;
vdso_data
->
stamp_xsec
=
xtime
.
tv_sec
*
XSEC_PER_SEC
;
vdso_data
->
stamp_xsec
=
(
u64
)
xtime
.
tv_sec
*
XSEC_PER_SEC
;
vdso_data
->
tb_to_xs
=
tb_to_xs
;
time_freq
=
0
;
/* If platform provided a timezone (pmac), we correct the time */
if
(
timezone_offset
)
{
sys_tz
.
tz_minuteswest
=
-
timezone_offset
/
60
;
sys_tz
.
tz_dsttime
=
0
;
xtime
.
tv_sec
-=
timezone_offset
;
}
last_rtc_update
=
xtime
.
tv_sec
;
set_normalized_timespec
(
&
wall_to_monotonic
,
-
xtime
.
tv_sec
,
-
xtime
.
tv_nsec
);
...
...
@@ -759,126 +795,6 @@ void __init time_init(void)
set_dec
(
tb_ticks_per_jiffy
);
}
/*
* After adjtimex is called, adjust the conversion of tb ticks
* to microseconds to keep do_gettimeofday synchronized
* with ntpd.
*
* Use the time_adjust, time_freq and time_offset computed by adjtimex to
* adjust the frequency.
*/
/* #define DEBUG_PPC_ADJTIMEX 1 */
void
ppc_adjtimex
(
void
)
{
#ifdef CONFIG_PPC64
unsigned
long
den
,
new_tb_ticks_per_sec
,
tb_ticks
,
old_xsec
,
new_tb_to_xs
,
new_xsec
,
new_stamp_xsec
;
unsigned
long
tb_ticks_per_sec_delta
;
long
delta_freq
,
ltemp
;
struct
div_result
divres
;
unsigned
long
flags
;
long
singleshot_ppm
=
0
;
/*
* Compute parts per million frequency adjustment to
* accomplish the time adjustment implied by time_offset to be
* applied over the elapsed time indicated by time_constant.
* Use SHIFT_USEC to get it into the same units as
* time_freq.
*/
if
(
time_offset
<
0
)
{
ltemp
=
-
time_offset
;
ltemp
<<=
SHIFT_USEC
-
SHIFT_UPDATE
;
ltemp
>>=
SHIFT_KG
+
time_constant
;
ltemp
=
-
ltemp
;
}
else
{
ltemp
=
time_offset
;
ltemp
<<=
SHIFT_USEC
-
SHIFT_UPDATE
;
ltemp
>>=
SHIFT_KG
+
time_constant
;
}
/* If there is a single shot time adjustment in progress */
if
(
time_adjust
)
{
#ifdef DEBUG_PPC_ADJTIMEX
printk
(
"ppc_adjtimex: "
);
if
(
adjusting_time
==
0
)
printk
(
"starting "
);
printk
(
"single shot time_adjust = %ld
\n
"
,
time_adjust
);
#endif
adjusting_time
=
1
;
/*
* Compute parts per million frequency adjustment
* to match time_adjust
*/
singleshot_ppm
=
tickadj
*
HZ
;
/*
* The adjustment should be tickadj*HZ to match the code in
* linux/kernel/timer.c, but experiments show that this is too
* large. 3/4 of tickadj*HZ seems about right
*/
singleshot_ppm
-=
singleshot_ppm
/
4
;
/* Use SHIFT_USEC to get it into the same units as time_freq */
singleshot_ppm
<<=
SHIFT_USEC
;
if
(
time_adjust
<
0
)
singleshot_ppm
=
-
singleshot_ppm
;
}
else
{
#ifdef DEBUG_PPC_ADJTIMEX
if
(
adjusting_time
)
printk
(
"ppc_adjtimex: ending single shot time_adjust
\n
"
);
#endif
adjusting_time
=
0
;
}
/* Add up all of the frequency adjustments */
delta_freq
=
time_freq
+
ltemp
+
singleshot_ppm
;
/*
* Compute a new value for tb_ticks_per_sec based on
* the frequency adjustment
*/
den
=
1000000
*
(
1
<<
(
SHIFT_USEC
-
8
));
if
(
delta_freq
<
0
)
{
tb_ticks_per_sec_delta
=
(
tb_ticks_per_sec
*
(
(
-
delta_freq
)
>>
(
SHIFT_USEC
-
8
)))
/
den
;
new_tb_ticks_per_sec
=
tb_ticks_per_sec
+
tb_ticks_per_sec_delta
;
}
else
{
tb_ticks_per_sec_delta
=
(
tb_ticks_per_sec
*
(
delta_freq
>>
(
SHIFT_USEC
-
8
)))
/
den
;
new_tb_ticks_per_sec
=
tb_ticks_per_sec
-
tb_ticks_per_sec_delta
;
}
#ifdef DEBUG_PPC_ADJTIMEX
printk
(
"ppc_adjtimex: ltemp = %ld, time_freq = %ld, singleshot_ppm = %ld
\n
"
,
ltemp
,
time_freq
,
singleshot_ppm
);
printk
(
"ppc_adjtimex: tb_ticks_per_sec - base = %ld new = %ld
\n
"
,
tb_ticks_per_sec
,
new_tb_ticks_per_sec
);
#endif
/*
* Compute a new value of tb_to_xs (used to convert tb to
* microseconds) and a new value of stamp_xsec which is the
* time (in 1/2^20 second units) corresponding to
* tb_orig_stamp. This new value of stamp_xsec compensates
* for the change in frequency (implied by the new tb_to_xs)
* which guarantees that the current time remains the same.
*/
write_seqlock_irqsave
(
&
xtime_lock
,
flags
);
tb_ticks
=
get_tb
()
-
do_gtod
.
varp
->
tb_orig_stamp
;
div128_by_32
(
1024
*
1024
,
0
,
new_tb_ticks_per_sec
,
&
divres
);
new_tb_to_xs
=
divres
.
result_low
;
new_xsec
=
mulhdu
(
tb_ticks
,
new_tb_to_xs
);
old_xsec
=
mulhdu
(
tb_ticks
,
do_gtod
.
varp
->
tb_to_xs
);
new_stamp_xsec
=
do_gtod
.
varp
->
stamp_xsec
+
old_xsec
-
new_xsec
;
update_gtod
(
do_gtod
.
varp
->
tb_orig_stamp
,
new_stamp_xsec
,
new_tb_to_xs
);
write_sequnlock_irqrestore
(
&
xtime_lock
,
flags
);
#endif
/* CONFIG_PPC64 */
}
#define FEBRUARY 2
#define STARTOFTIME 1970
...
...
arch/powerpc/platforms/pseries/smp.c
View file @
6bd25e78
...
...
@@ -292,7 +292,7 @@ static inline int __devinit smp_startup_cpu(unsigned int lcpu)
if
(
start_cpu
==
RTAS_UNKNOWN_SERVICE
)
return
1
;
status
=
rtas_call
(
start_cpu
,
3
,
1
,
NULL
,
pcpu
,
start_here
,
l
cpu
);
status
=
rtas_call
(
start_cpu
,
3
,
1
,
NULL
,
pcpu
,
start_here
,
p
cpu
);
if
(
status
!=
0
)
{
printk
(
KERN_ERR
"start-cpu failed: %i
\n
"
,
status
);
return
0
;
...
...
arch/ppc/kernel/ppc_ksyms.c
View file @
6bd25e78
...
...
@@ -93,15 +93,8 @@ EXPORT_SYMBOL(test_and_change_bit);
EXPORT_SYMBOL
(
strcpy
);
EXPORT_SYMBOL
(
strncpy
);
EXPORT_SYMBOL
(
strcat
);
EXPORT_SYMBOL
(
strncat
);
EXPORT_SYMBOL
(
strchr
);
EXPORT_SYMBOL
(
strrchr
);
EXPORT_SYMBOL
(
strpbrk
);
EXPORT_SYMBOL
(
strstr
);
EXPORT_SYMBOL
(
strlen
);
EXPORT_SYMBOL
(
strnlen
);
EXPORT_SYMBOL
(
strcmp
);
EXPORT_SYMBOL
(
strncmp
);
EXPORT_SYMBOL
(
strcasecmp
);
EXPORT_SYMBOL
(
__div64_32
);
...
...
@@ -253,7 +246,6 @@ EXPORT_SYMBOL(memcpy);
EXPORT_SYMBOL
(
cacheable_memcpy
);
EXPORT_SYMBOL
(
memset
);
EXPORT_SYMBOL
(
memmove
);
EXPORT_SYMBOL
(
memscan
);
EXPORT_SYMBOL
(
memcmp
);
EXPORT_SYMBOL
(
memchr
);
...
...
arch/ppc/xmon/start.c
View file @
6bd25e78
...
...
@@ -146,19 +146,6 @@ xmon_map_scc(void)
static
int
scc_initialized
=
0
;
void
xmon_init_scc
(
void
);
extern
void
cuda_poll
(
void
);
static
inline
void
do_poll_adb
(
void
)
{
#ifdef CONFIG_ADB_PMU
if
(
sys_ctrler
==
SYS_CTRLER_PMU
)
pmu_poll_adb
();
#endif
/* CONFIG_ADB_PMU */
#ifdef CONFIG_ADB_CUDA
if
(
sys_ctrler
==
SYS_CTRLER_CUDA
)
cuda_poll
();
#endif
/* CONFIG_ADB_CUDA */
}
int
xmon_write
(
void
*
handle
,
void
*
ptr
,
int
nb
)
...
...
@@ -189,7 +176,7 @@ xmon_write(void *handle, void *ptr, int nb)
ct
=
0
;
for
(
i
=
0
;
i
<
nb
;
++
i
)
{
while
((
*
sccc
&
TXRDY
)
==
0
)
do_poll_adb
()
;
;
c
=
p
[
i
];
if
(
c
==
'\n'
&&
!
ct
)
{
c
=
'\r'
;
...
...
include/asm-ppc/machdep.h
View file @
6bd25e78
...
...
@@ -154,19 +154,6 @@ extern char cmd_line[COMMAND_LINE_SIZE];
extern
void
setup_pci_ptrs
(
void
);
/*
* Power macintoshes have either a CUDA or a PMU controlling
* system reset, power, NVRAM, RTC.
*/
typedef
enum
sys_ctrler_kind
{
SYS_CTRLER_UNKNOWN
=
0
,
SYS_CTRLER_CUDA
=
1
,
SYS_CTRLER_PMU
=
2
,
SYS_CTRLER_SMU
=
3
,
}
sys_ctrler_t
;
extern
sys_ctrler_t
sys_ctrler
;
#ifdef CONFIG_SMP
struct
smp_ops_t
{
void
(
*
message_pass
)(
int
target
,
int
msg
);
...
...
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