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nexedi
linux
Commits
2cd005ca
Commit
2cd005ca
authored
Apr 19, 2011
by
Dominik Brodowski
Browse files
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Browse Files
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Plain Diff
cpupowerutils: helpers - ConfigStyle bugfixes
Signed-off-by:
Dominik Brodowski
<
linux@dominikbrodowski.net
>
parent
b510b541
Changes
9
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Showing
9 changed files
with
100 additions
and
86 deletions
+100
-86
tools/power/cpupower/utils/helpers/amd.c
tools/power/cpupower/utils/helpers/amd.c
+4
-4
tools/power/cpupower/utils/helpers/bitmask.c
tools/power/cpupower/utils/helpers/bitmask.c
+7
-5
tools/power/cpupower/utils/helpers/cpuid.c
tools/power/cpupower/utils/helpers/cpuid.c
+6
-8
tools/power/cpupower/utils/helpers/helpers.h
tools/power/cpupower/utils/helpers/helpers.h
+3
-3
tools/power/cpupower/utils/helpers/misc.c
tools/power/cpupower/utils/helpers/misc.c
+2
-1
tools/power/cpupower/utils/helpers/pci.c
tools/power/cpupower/utils/helpers/pci.c
+1
-1
tools/power/cpupower/utils/helpers/sysfs.c
tools/power/cpupower/utils/helpers/sysfs.c
+60
-52
tools/power/cpupower/utils/helpers/sysfs.h
tools/power/cpupower/utils/helpers/sysfs.h
+14
-9
tools/power/cpupower/utils/helpers/topology.c
tools/power/cpupower/utils/helpers/topology.c
+3
-3
No files found.
tools/power/cpupower/utils/helpers/amd.c
View file @
2cd005ca
...
...
@@ -53,8 +53,8 @@ static int get_cof(int family, union msr_pstate pstate)
if
(
family
==
0x11
)
t
=
0x8
;
return
(
(
100
*
(
fid
+
t
))
>>
did
)
;
}
return
(
100
*
(
fid
+
t
))
>>
did
;
}
/* Needs:
* cpu -> the cpu that gets evaluated
...
...
@@ -74,7 +74,7 @@ int decode_pstates(unsigned int cpu, unsigned int cpu_family,
{
int
i
,
psmax
,
pscur
;
union
msr_pstate
pstate
;
unsigned
long
long
val
;
unsigned
long
long
val
;
/* Only read out frequencies from HW when CPU might be boostable
to keep the code as short and clean as possible.
...
...
@@ -95,7 +95,7 @@ int decode_pstates(unsigned int cpu, unsigned int cpu_family,
pscur
+=
boost_states
;
psmax
+=
boost_states
;
for
(
i
=
0
;
i
<=
psmax
;
i
++
)
{
for
(
i
=
0
;
i
<=
psmax
;
i
++
)
{
if
(
i
>=
MAX_HW_PSTATES
)
{
fprintf
(
stderr
,
"HW pstates [%d] exceeding max [%d]
\n
"
,
psmax
,
MAX_HW_PSTATES
);
...
...
tools/power/cpupower/utils/helpers/bitmask.c
View file @
2cd005ca
...
...
@@ -8,12 +8,12 @@
#define bitsperlong (8 * sizeof(unsigned long))
/* howmany(a,b) : how many elements of size b needed to hold all of a */
#define howmany(x,y) (((x)+((y)-1))/(y))
#define howmany(x,
y) (((x)+((y)-1))/(y))
/* How many longs in mask of n bits */
#define longsperbits(n) howmany(n, bitsperlong)
#define max(a,b) ((a) > (b) ? (a) : (b))
#define max(a,
b) ((a) > (b) ? (a) : (b))
/*
* Allocate and free `struct bitmask *`
...
...
@@ -73,7 +73,8 @@ static void _setbit(struct bitmask *bmp, unsigned int n, unsigned int v)
if
(
v
)
bmp
->
maskp
[
n
/
bitsperlong
]
|=
1UL
<<
(
n
%
bitsperlong
);
else
bmp
->
maskp
[
n
/
bitsperlong
]
&=
~
(
1UL
<<
(
n
%
bitsperlong
));
bmp
->
maskp
[
n
/
bitsperlong
]
&=
~
(
1UL
<<
(
n
%
bitsperlong
));
}
}
...
...
@@ -185,7 +186,7 @@ unsigned int bitmask_next(const struct bitmask *bmp, unsigned int i)
* 0-3 0,1,2,3
* 0-7:2 0,2,4,6
* 1,3,5-7 1,3,5,6,7
* 0-3:2,8-15:4 0,2,8,12
* 0-3:2,8-15:4 0,2,8,12
*/
int
bitmask_parselist
(
const
char
*
buf
,
struct
bitmask
*
bmp
)
{
...
...
@@ -251,7 +252,8 @@ static inline int emit(char *buf, int buflen, int rbot, int rtop, int len)
if
(
rbot
==
rtop
)
len
+=
snprintf
(
buf
+
len
,
max
(
buflen
-
len
,
0
),
"%d"
,
rbot
);
else
len
+=
snprintf
(
buf
+
len
,
max
(
buflen
-
len
,
0
),
"%d-%d"
,
rbot
,
rtop
);
len
+=
snprintf
(
buf
+
len
,
max
(
buflen
-
len
,
0
),
"%d-%d"
,
rbot
,
rtop
);
return
len
;
}
...
...
tools/power/cpupower/utils/helpers/cpuid.c
View file @
2cd005ca
...
...
@@ -67,28 +67,26 @@ int get_cpu_info(unsigned int cpu, struct cpupower_cpu_info *cpu_info)
continue
;
value
[
63
-
1
]
=
'\0'
;
if
(
!
strncmp
(
value
,
"processor
\t
: "
,
12
))
{
if
(
!
strncmp
(
value
,
"processor
\t
: "
,
12
))
sscanf
(
value
,
"processor
\t
: %u"
,
&
proc
);
}
if
(
proc
!=
cpu
)
continue
;
/* Get CPU vendor */
if
(
!
strncmp
(
value
,
"vendor_id"
,
9
))
if
(
!
strncmp
(
value
,
"vendor_id"
,
9
))
{
for
(
x
=
1
;
x
<
X86_VENDOR_MAX
;
x
++
)
{
if
(
strstr
(
value
,
cpu_vendor_table
[
x
]))
cpu_info
->
vendor
=
x
;
}
/* Get CPU family, etc. */
else
if
(
!
strncmp
(
value
,
"cpu family
\t
: "
,
13
))
{
}
else
if
(
!
strncmp
(
value
,
"cpu family
\t
: "
,
13
))
{
sscanf
(
value
,
"cpu family
\t
: %u"
,
&
cpu_info
->
family
);
}
else
if
(
!
strncmp
(
value
,
"model
\t\t
: "
,
9
))
{
}
else
if
(
!
strncmp
(
value
,
"model
\t\t
: "
,
9
))
{
sscanf
(
value
,
"model
\t\t
: %u"
,
&
cpu_info
->
model
);
}
else
if
(
!
strncmp
(
value
,
"stepping
\t
: "
,
10
))
{
}
else
if
(
!
strncmp
(
value
,
"stepping
\t
: "
,
10
))
{
sscanf
(
value
,
"stepping
\t
: %u"
,
&
cpu_info
->
stepping
);
...
...
tools/power/cpupower/utils/helpers/helpers.h
View file @
2cd005ca
...
...
@@ -20,7 +20,7 @@
#ifndef gettext_noop
#define gettext_noop(String) String
#endif
#define N_(String) gettext_noop
(String)
#define N_(String) gettext_noop(String)
/* Internationalization ****************************/
extern
int
run_as_root
;
...
...
@@ -39,11 +39,11 @@ extern int be_verbose;
#define dprint(fmt, ...) { \
if (be_verbose) { \
fprintf(stderr, "%s: " fmt, \
__
FUNCTION
__, ##__VA_ARGS__); \
__
func
__, ##__VA_ARGS__); \
} \
}
#else
static
inline
void
dprint
(
const
char
*
fmt
,
...)
{
}
static
inline
void
dprint
(
const
char
*
fmt
,
...)
{
}
#endif
extern
int
be_verbose
;
/* Global verbose (-v) stuff *********************************/
...
...
tools/power/cpupower/utils/helpers/misc.c
View file @
2cd005ca
...
...
@@ -2,7 +2,8 @@
#include "helpers/helpers.h"
int
cpufreq_has_boost_support
(
unsigned
int
cpu
,
int
*
support
,
int
*
active
,
int
*
states
)
int
cpufreq_has_boost_support
(
unsigned
int
cpu
,
int
*
support
,
int
*
active
,
int
*
states
)
{
struct
cpupower_cpu_info
cpu_info
;
int
ret
;
...
...
tools/power/cpupower/utils/helpers/pci.c
View file @
2cd005ca
...
...
@@ -33,7 +33,7 @@ struct pci_dev *pci_acc_init(struct pci_access **pacc, int vendor_id,
for
(
i
=
0
;
dev_ids
[
i
]
!=
0
;
i
++
)
{
filter_nb_link
.
device
=
dev_ids
[
i
];
for
(
device
=
(
*
pacc
)
->
devices
;
device
;
device
=
device
->
next
)
{
for
(
device
=
(
*
pacc
)
->
devices
;
device
;
device
=
device
->
next
)
{
if
(
pci_filter_match
(
&
filter_nb_link
,
device
))
return
device
;
}
...
...
tools/power/cpupower/utils/helpers/sysfs.c
View file @
2cd005ca
...
...
@@ -19,14 +19,14 @@
unsigned
int
sysfs_read_file
(
const
char
*
path
,
char
*
buf
,
size_t
buflen
)
{
int
fd
;
size_t
numread
;
s
s
ize_t
numread
;
if
(
(
fd
=
open
(
path
,
O_RDONLY
)
)
==
-
1
)
fd
=
open
(
path
,
O_RDONLY
);
if
(
fd
==
-
1
)
return
0
;
numread
=
read
(
fd
,
buf
,
buflen
-
1
);
if
(
numread
<
1
)
{
if
(
numread
<
1
)
{
close
(
fd
);
return
0
;
}
...
...
@@ -34,26 +34,26 @@ unsigned int sysfs_read_file(const char *path, char *buf, size_t buflen)
buf
[
numread
]
=
'\0'
;
close
(
fd
);
return
numread
;
return
(
unsigned
int
)
numread
;
}
static
unsigned
int
sysfs_write_file
(
const
char
*
path
,
const
char
*
value
,
size_t
len
)
{
int
fd
;
size_t
numwrite
;
s
s
ize_t
numwrite
;
if
(
(
fd
=
open
(
path
,
O_WRONLY
)
)
==
-
1
)
fd
=
open
(
path
,
O_WRONLY
);
if
(
fd
==
-
1
)
return
0
;
numwrite
=
write
(
fd
,
value
,
len
);
if
(
numwrite
<
1
)
{
if
(
numwrite
<
1
)
{
close
(
fd
);
return
0
;
}
close
(
fd
);
return
numwrite
;
return
(
unsigned
int
)
numwrite
;
}
/* CPUidle idlestate specific /sys/devices/system/cpu/cpuX/cpuidle/ access */
...
...
@@ -69,17 +69,17 @@ unsigned int sysfs_idlestate_read_file(unsigned int cpu, unsigned int idlestate,
{
char
path
[
SYSFS_PATH_MAX
];
int
fd
;
size_t
numread
;
s
s
ize_t
numread
;
snprintf
(
path
,
sizeof
(
path
),
PATH_TO_CPU
"cpu%u/cpuidle/state%u/%s"
,
cpu
,
idlestate
,
fname
);
if
(
(
fd
=
open
(
path
,
O_RDONLY
)
)
==
-
1
)
fd
=
open
(
path
,
O_RDONLY
);
if
(
fd
==
-
1
)
return
0
;
numread
=
read
(
fd
,
buf
,
buflen
-
1
);
if
(
numread
<
1
)
{
if
(
numread
<
1
)
{
close
(
fd
);
return
0
;
}
...
...
@@ -87,7 +87,7 @@ unsigned int sysfs_idlestate_read_file(unsigned int cpu, unsigned int idlestate,
buf
[
numread
]
=
'\0'
;
close
(
fd
);
return
numread
;
return
(
unsigned
int
)
numread
;
}
/* read access to files which contain one numeric value */
...
...
@@ -116,19 +116,18 @@ static unsigned long long sysfs_idlestate_get_one_value(unsigned int cpu,
char
linebuf
[
MAX_LINE_LEN
];
char
*
endp
;
if
(
which
>=
MAX_IDLESTATE_VALUE_FILES
)
if
(
which
>=
MAX_IDLESTATE_VALUE_FILES
)
return
0
;
if
(
(
len
=
sysfs_idlestate_read_file
(
cpu
,
idlestate
,
idlestate_value_files
[
which
],
linebuf
,
sizeof
(
linebuf
)))
==
0
)
{
len
=
sysfs_idlestate_read_file
(
cpu
,
idlestate
,
idlestate_value_files
[
which
],
linebuf
,
sizeof
(
linebuf
));
if
(
len
==
0
)
return
0
;
}
value
=
strtoull
(
linebuf
,
&
endp
,
0
);
if
(
endp
==
linebuf
||
errno
==
ERANGE
)
if
(
endp
==
linebuf
||
errno
==
ERANGE
)
return
0
;
return
value
;
...
...
@@ -148,9 +147,9 @@ static const char *idlestate_string_files[MAX_IDLESTATE_STRING_FILES] = {
};
static
char
*
sysfs_idlestate_get_one_string
(
unsigned
int
cpu
,
unsigned
int
idlestate
,
enum
idlestate_string
which
)
static
char
*
sysfs_idlestate_get_one_string
(
unsigned
int
cpu
,
unsigned
int
idlestate
,
enum
idlestate_string
which
)
{
char
linebuf
[
MAX_LINE_LEN
];
char
*
result
;
...
...
@@ -159,12 +158,14 @@ static char * sysfs_idlestate_get_one_string(unsigned int cpu,
if
(
which
>=
MAX_IDLESTATE_STRING_FILES
)
return
NULL
;
if
(
(
len
=
sysfs_idlestate_read_file
(
cpu
,
idlestate
,
idlestate_string_files
[
which
],
linebuf
,
sizeof
(
linebuf
)))
==
0
)
len
=
sysfs_idlestate_read_file
(
cpu
,
idlestate
,
idlestate_string_files
[
which
],
linebuf
,
sizeof
(
linebuf
));
if
(
len
==
0
)
return
NULL
;
if
(
(
result
=
strdup
(
linebuf
)
)
==
NULL
)
result
=
strdup
(
linebuf
);
if
(
result
==
NULL
)
return
NULL
;
if
(
result
[
strlen
(
result
)
-
1
]
==
'\n'
)
...
...
@@ -173,27 +174,30 @@ static char * sysfs_idlestate_get_one_string(unsigned int cpu,
return
result
;
}
unsigned
long
sysfs_get_idlestate_latency
(
unsigned
int
cpu
,
unsigned
int
idlestate
)
unsigned
long
sysfs_get_idlestate_latency
(
unsigned
int
cpu
,
unsigned
int
idlestate
)
{
return
sysfs_idlestate_get_one_value
(
cpu
,
idlestate
,
IDLESTATE_LATENCY
);
}
unsigned
long
sysfs_get_idlestate_usage
(
unsigned
int
cpu
,
unsigned
int
idlestate
)
unsigned
long
sysfs_get_idlestate_usage
(
unsigned
int
cpu
,
unsigned
int
idlestate
)
{
return
sysfs_idlestate_get_one_value
(
cpu
,
idlestate
,
IDLESTATE_USAGE
);
}
unsigned
long
long
sysfs_get_idlestate_time
(
unsigned
int
cpu
,
unsigned
int
idlestate
)
unsigned
long
long
sysfs_get_idlestate_time
(
unsigned
int
cpu
,
unsigned
int
idlestate
)
{
return
sysfs_idlestate_get_one_value
(
cpu
,
idlestate
,
IDLESTATE_TIME
);
}
char
*
sysfs_get_idlestate_name
(
unsigned
int
cpu
,
unsigned
int
idlestate
)
char
*
sysfs_get_idlestate_name
(
unsigned
int
cpu
,
unsigned
int
idlestate
)
{
return
sysfs_idlestate_get_one_string
(
cpu
,
idlestate
,
IDLESTATE_NAME
);
}
char
*
sysfs_get_idlestate_desc
(
unsigned
int
cpu
,
unsigned
int
idlestate
)
char
*
sysfs_get_idlestate_desc
(
unsigned
int
cpu
,
unsigned
int
idlestate
)
{
return
sysfs_idlestate_get_one_string
(
cpu
,
idlestate
,
IDLESTATE_DESC
);
}
...
...
@@ -211,14 +215,14 @@ int sysfs_get_idlestate_count(unsigned int cpu)
snprintf
(
file
,
SYSFS_PATH_MAX
,
PATH_TO_CPU
"cpuidle"
);
if
(
stat
(
file
,
&
statbuf
)
!=
0
||
!
S_ISDIR
(
statbuf
.
st_mode
))
if
(
stat
(
file
,
&
statbuf
)
!=
0
||
!
S_ISDIR
(
statbuf
.
st_mode
))
return
-
ENODEV
;
snprintf
(
file
,
SYSFS_PATH_MAX
,
PATH_TO_CPU
"cpu%u/cpuidle/state0"
,
cpu
);
if
(
stat
(
file
,
&
statbuf
)
!=
0
||
!
S_ISDIR
(
statbuf
.
st_mode
))
if
(
stat
(
file
,
&
statbuf
)
!=
0
||
!
S_ISDIR
(
statbuf
.
st_mode
))
return
0
;
while
(
stat
(
file
,
&
statbuf
)
==
0
&&
S_ISDIR
(
statbuf
.
st_mode
))
{
while
(
stat
(
file
,
&
statbuf
)
==
0
&&
S_ISDIR
(
statbuf
.
st_mode
))
{
snprintf
(
file
,
SYSFS_PATH_MAX
,
PATH_TO_CPU
"cpu%u/cpuidle/state%d"
,
cpu
,
idlestates
);
idlestates
++
;
...
...
@@ -261,7 +265,7 @@ static const char *cpuidle_string_files[MAX_CPUIDLE_STRING_FILES] = {
};
static
char
*
sysfs_cpuidle_get_one_string
(
enum
cpuidle_string
which
)
static
char
*
sysfs_cpuidle_get_one_string
(
enum
cpuidle_string
which
)
{
char
linebuf
[
MAX_LINE_LEN
];
char
*
result
;
...
...
@@ -270,11 +274,13 @@ static char * sysfs_cpuidle_get_one_string(enum cpuidle_string which)
if
(
which
>=
MAX_CPUIDLE_STRING_FILES
)
return
NULL
;
if
(
(
len
=
sysfs_cpuidle_read_file
(
cpuidle_string_files
[
which
],
linebuf
,
sizeof
(
linebuf
)))
==
0
)
len
=
sysfs_cpuidle_read_file
(
cpuidle_string_files
[
which
],
linebuf
,
sizeof
(
linebuf
));
if
(
len
==
0
)
return
NULL
;
if
(
(
result
=
strdup
(
linebuf
)
)
==
NULL
)
result
=
strdup
(
linebuf
);
if
(
result
==
NULL
)
return
NULL
;
if
(
result
[
strlen
(
result
)
-
1
]
==
'\n'
)
...
...
@@ -283,7 +289,7 @@ static char * sysfs_cpuidle_get_one_string(enum cpuidle_string which)
return
result
;
}
char
*
sysfs_get_cpuidle_governor
(
void
)
char
*
sysfs_get_cpuidle_governor
(
void
)
{
char
*
tmp
=
sysfs_cpuidle_get_one_string
(
CPUIDLE_GOVERNOR_RO
);
if
(
!
tmp
)
...
...
@@ -292,7 +298,7 @@ char * sysfs_get_cpuidle_governor(void)
return
tmp
;
}
char
*
sysfs_get_cpuidle_driver
(
void
)
char
*
sysfs_get_cpuidle_driver
(
void
)
{
return
sysfs_cpuidle_get_one_string
(
CPUIDLE_DRIVER
);
}
...
...
@@ -304,9 +310,9 @@ char * sysfs_get_cpuidle_driver(void)
*
* Returns negative value on failure
*/
int
sysfs_get_sched
(
const
char
*
smt_mc
)
int
sysfs_get_sched
(
const
char
*
smt_mc
)
{
unsigned
long
value
;
unsigned
long
value
;
char
linebuf
[
MAX_LINE_LEN
];
char
*
endp
;
char
path
[
SYSFS_PATH_MAX
];
...
...
@@ -314,11 +320,12 @@ int sysfs_get_sched(const char* smt_mc)
if
(
strcmp
(
"mc"
,
smt_mc
)
&&
strcmp
(
"smt"
,
smt_mc
))
return
-
EINVAL
;
snprintf
(
path
,
sizeof
(
path
),
PATH_TO_CPU
"sched_%s_power_savings"
,
smt_mc
);
if
(
sysfs_read_file
(
path
,
linebuf
,
MAX_LINE_LEN
)
==
0
)
snprintf
(
path
,
sizeof
(
path
),
PATH_TO_CPU
"sched_%s_power_savings"
,
smt_mc
);
if
(
sysfs_read_file
(
path
,
linebuf
,
MAX_LINE_LEN
)
==
0
)
return
-
1
;
value
=
strtoul
(
linebuf
,
&
endp
,
0
);
if
(
endp
==
linebuf
||
errno
==
ERANGE
)
if
(
endp
==
linebuf
||
errno
==
ERANGE
)
return
-
1
;
return
value
;
}
...
...
@@ -329,7 +336,7 @@ int sysfs_get_sched(const char* smt_mc)
*
* Returns negative value on failure
*/
int
sysfs_set_sched
(
const
char
*
smt_mc
,
int
val
)
int
sysfs_set_sched
(
const
char
*
smt_mc
,
int
val
)
{
char
linebuf
[
MAX_LINE_LEN
];
char
path
[
SYSFS_PATH_MAX
];
...
...
@@ -338,13 +345,14 @@ int sysfs_set_sched(const char* smt_mc, int val)
if
(
strcmp
(
"mc"
,
smt_mc
)
&&
strcmp
(
"smt"
,
smt_mc
))
return
-
EINVAL
;
snprintf
(
path
,
sizeof
(
path
),
PATH_TO_CPU
"sched_%s_power_savings"
,
smt_mc
);
snprintf
(
path
,
sizeof
(
path
),
PATH_TO_CPU
"sched_%s_power_savings"
,
smt_mc
);
sprintf
(
linebuf
,
"%d"
,
val
);
if
(
stat
(
path
,
&
statbuf
)
!=
0
)
if
(
stat
(
path
,
&
statbuf
)
!=
0
)
return
-
ENODEV
;
if
(
sysfs_write_file
(
path
,
linebuf
,
MAX_LINE_LEN
)
==
0
)
if
(
sysfs_write_file
(
path
,
linebuf
,
MAX_LINE_LEN
)
==
0
)
return
-
1
;
return
0
;
}
tools/power/cpupower/utils/helpers/sysfs.h
View file @
2cd005ca
...
...
@@ -7,17 +7,22 @@
extern
unsigned
int
sysfs_read_file
(
const
char
*
path
,
char
*
buf
,
size_t
buflen
);
extern
unsigned
long
sysfs_get_idlestate_latency
(
unsigned
int
cpu
,
unsigned
int
idlestate
);
extern
unsigned
long
sysfs_get_idlestate_usage
(
unsigned
int
cpu
,
unsigned
int
idlestate
);
extern
unsigned
long
long
sysfs_get_idlestate_time
(
unsigned
int
cpu
,
unsigned
int
idlestate
);
extern
char
*
sysfs_get_idlestate_name
(
unsigned
int
cpu
,
unsigned
int
idlestate
);
extern
char
*
sysfs_get_idlestate_desc
(
unsigned
int
cpu
,
unsigned
int
idlestate
);
extern
unsigned
long
sysfs_get_idlestate_latency
(
unsigned
int
cpu
,
unsigned
int
idlestate
);
extern
unsigned
long
sysfs_get_idlestate_usage
(
unsigned
int
cpu
,
unsigned
int
idlestate
);
extern
unsigned
long
long
sysfs_get_idlestate_time
(
unsigned
int
cpu
,
unsigned
int
idlestate
);
extern
char
*
sysfs_get_idlestate_name
(
unsigned
int
cpu
,
unsigned
int
idlestate
);
extern
char
*
sysfs_get_idlestate_desc
(
unsigned
int
cpu
,
unsigned
int
idlestate
);
extern
int
sysfs_get_idlestate_count
(
unsigned
int
cpu
);
extern
char
*
sysfs_get_cpuidle_governor
(
void
);
extern
char
*
sysfs_get_cpuidle_driver
(
void
);
extern
char
*
sysfs_get_cpuidle_governor
(
void
);
extern
char
*
sysfs_get_cpuidle_driver
(
void
);
extern
int
sysfs_get_sched
(
const
char
*
smt_mc
);
extern
int
sysfs_set_sched
(
const
char
*
smt_mc
,
int
val
);
extern
int
sysfs_get_sched
(
const
char
*
smt_mc
);
extern
int
sysfs_set_sched
(
const
char
*
smt_mc
,
int
val
);
#endif
/* __CPUPOWER_HELPERS_SYSFS_H__ */
tools/power/cpupower/utils/helpers/topology.c
View file @
2cd005ca
...
...
@@ -22,17 +22,17 @@
/* returns -1 on failure, 0 on success */
int
sysfs_topology_read_file
(
unsigned
int
cpu
,
const
char
*
fname
)
{
unsigned
long
value
;
unsigned
long
value
;
char
linebuf
[
MAX_LINE_LEN
];
char
*
endp
;
char
path
[
SYSFS_PATH_MAX
];
snprintf
(
path
,
sizeof
(
path
),
PATH_TO_CPU
"cpu%u/topology/%s"
,
cpu
,
fname
);
if
(
sysfs_read_file
(
path
,
linebuf
,
MAX_LINE_LEN
)
==
0
)
if
(
sysfs_read_file
(
path
,
linebuf
,
MAX_LINE_LEN
)
==
0
)
return
-
1
;
value
=
strtoul
(
linebuf
,
&
endp
,
0
);
if
(
endp
==
linebuf
||
errno
==
ERANGE
)
if
(
endp
==
linebuf
||
errno
==
ERANGE
)
return
-
1
;
return
value
;
}
...
...
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