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Kirill Smelkov
linux
Commits
06393d0f
Commit
06393d0f
authored
May 11, 2004
by
Dave Jones
Committed by
Dave Jones
May 11, 2004
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[CPUFREQ] Avoid scheduling cpufreq_delayed_get_work() twice; but do call it a bit earlier.
parent
b4ffaea1
Changes
1
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Showing
1 changed file
with
7 additions
and
2 deletions
+7
-2
arch/i386/kernel/timers/timer_tsc.c
arch/i386/kernel/timers/timer_tsc.c
+7
-2
No files found.
arch/i386/kernel/timers/timer_tsc.c
View file @
06393d0f
...
@@ -244,7 +244,7 @@ static void mark_offset_tsc(void)
...
@@ -244,7 +244,7 @@ static void mark_offset_tsc(void)
clock_fallback
();
clock_fallback
();
}
}
/* ... but give the TSC a fair chance */
/* ... but give the TSC a fair chance */
if
(
lost_count
==
50
)
if
(
lost_count
>
25
)
cpufreq_delayed_get
();
cpufreq_delayed_get
();
}
else
}
else
lost_count
=
0
;
lost_count
=
0
;
...
@@ -331,6 +331,7 @@ static void mark_offset_tsc_hpet(void)
...
@@ -331,6 +331,7 @@ static void mark_offset_tsc_hpet(void)
#ifdef CONFIG_CPU_FREQ
#ifdef CONFIG_CPU_FREQ
#include <linux/workqueue.h>
#include <linux/workqueue.h>
static
unsigned
int
cpufreq_delayed_issched
=
0
;
static
unsigned
int
cpufreq_init
=
0
;
static
unsigned
int
cpufreq_init
=
0
;
static
struct
work_struct
cpufreq_delayed_get_work
;
static
struct
work_struct
cpufreq_delayed_get_work
;
...
@@ -340,6 +341,7 @@ static void handle_cpufreq_delayed_get(void *v)
...
@@ -340,6 +341,7 @@ static void handle_cpufreq_delayed_get(void *v)
for_each_online_cpu
(
cpu
)
{
for_each_online_cpu
(
cpu
)
{
cpufreq_get
(
cpu
);
cpufreq_get
(
cpu
);
}
}
cpufreq_delayed_issched
=
0
;
}
}
/* if we notice lost ticks, schedule a call to cpufreq_get() as it tries
/* if we notice lost ticks, schedule a call to cpufreq_get() as it tries
...
@@ -348,8 +350,11 @@ static void handle_cpufreq_delayed_get(void *v)
...
@@ -348,8 +350,11 @@ static void handle_cpufreq_delayed_get(void *v)
*/
*/
static
inline
void
cpufreq_delayed_get
(
void
)
static
inline
void
cpufreq_delayed_get
(
void
)
{
{
if
(
cpufreq_init
)
if
(
cpufreq_init
&&
!
cpufreq_delayed_issched
)
{
cpufreq_delayed_issched
=
1
;
printk
(
KERN_DEBUG
"Losing some ticks... checking if CPU frequency changed.
\n
"
);
schedule_work
(
&
cpufreq_delayed_get_work
);
schedule_work
(
&
cpufreq_delayed_get_work
);
}
}
}
/* If the CPU frequency is scaled, TSC-based delays will need a different
/* If the CPU frequency is scaled, TSC-based delays will need a different
...
...
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