Re: [PATCH] cpufreq: p4-clockmod: Replace bool_int_array[NR_CPUS] with bitmap

2015-09-28 Thread Jean Delvare
On Sun, 27 Sep 2015 19:58:11 +0200, Denys Vlasenko wrote:
> On 09/27/2015 06:10 PM, Jean Delvare wrote:
> > Looks good, however I think you should #include  to
> > avoid build failures in the future or on certain architectures.
> 
>  already includes 
> on any arch.

Today it does. Tomorrow, who knows.

> p4-clockmod.c builds only on x86 arch, it's Pentium 4
> on demand clock modulation/speed scaling module.

That is a valid point. My comment was generic, I did not pay attention
to the specific driver.

-- 
Jean Delvare
SUSE L3 Support
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Re: [PATCH] cpufreq: p4-clockmod: Replace bool_int_array[NR_CPUS] with bitmap

2015-09-28 Thread Jean Delvare
On Sun, 27 Sep 2015 19:58:11 +0200, Denys Vlasenko wrote:
> On 09/27/2015 06:10 PM, Jean Delvare wrote:
> > Looks good, however I think you should #include  to
> > avoid build failures in the future or on certain architectures.
> 
>  already includes 
> on any arch.

Today it does. Tomorrow, who knows.

> p4-clockmod.c builds only on x86 arch, it's Pentium 4
> on demand clock modulation/speed scaling module.

That is a valid point. My comment was generic, I did not pay attention
to the specific driver.

-- 
Jean Delvare
SUSE L3 Support
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
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Re: [PATCH] cpufreq: p4-clockmod: Replace bool_int_array[NR_CPUS] with bitmap

2015-09-27 Thread Denys Vlasenko
On 09/27/2015 06:10 PM, Jean Delvare wrote:
> Looks good, however I think you should #include  to
> avoid build failures in the future or on certain architectures.

 already includes 
on any arch.

p4-clockmod.c builds only on x86 arch, it's Pentium 4
on demand clock modulation/speed scaling module.

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
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Re: [PATCH] cpufreq: p4-clockmod: Replace bool_int_array[NR_CPUS] with bitmap

2015-09-27 Thread Jean Delvare
Hi Denys,

On Sat, 26 Sep 2015 14:47:18 +0200, Denys Vlasenko wrote:
> Straigntforward conversion from
> int has_N44_O17_errata[NR_CPUS]
> to
> DECLARE_BITMAP(has_N44_O17_errata, NR_CPUS)
> 
> Saves about 2 kbytes in bss for NR_CPUS=512.
> 
> Signed-off-by: Denys Vlasenko 
> CC: Viresh Kumar 
> CC: Rafael J. Wysocki 
> CC: Ingo Molnar 
> CC: Bartosz Golaszewski 
> CC: H. Peter Anvin 
> CC: Benoit Cousson 
> CC: Fenghua Yu 
> CC: Guenter Roeck 
> CC: Jean Delvare 
> CC: Jonathan Corbet 
> CC: Peter Zijlstra 
> CC: Thomas Gleixner 
> CC: x...@kernel.org
> CC: linux-kernel@vger.kernel.org
> ---
>  drivers/cpufreq/p4-clockmod.c | 8 
>  1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/cpufreq/p4-clockmod.c b/drivers/cpufreq/p4-clockmod.c
> index 5dd95da..dd15810 100644
> --- a/drivers/cpufreq/p4-clockmod.c
> +++ b/drivers/cpufreq/p4-clockmod.c
> @@ -49,7 +49,7 @@ enum {
>  #define DC_ENTRIES   8
>  
>  
> -static int has_N44_O17_errata[NR_CPUS];
> +static DECLARE_BITMAP(has_N44_O17_errata, NR_CPUS);
>  static unsigned int stock_freq;
>  static struct cpufreq_driver p4clockmod_driver;
>  static unsigned int cpufreq_p4_get(unsigned int cpu);
> @@ -66,7 +66,7 @@ static int cpufreq_p4_setdc(unsigned int cpu, unsigned int 
> newstate)
>   if (l & 0x01)
>   pr_debug("CPU#%d currently thermal throttled\n", cpu);
>  
> - if (has_N44_O17_errata[cpu] &&
> + if (test_bit(cpu, has_N44_O17_errata) &&
>   (newstate == DC_25PT || newstate == DC_DFLT))
>   newstate = DC_38PT;
>  
> @@ -182,7 +182,7 @@ static int cpufreq_p4_cpu_init(struct cpufreq_policy 
> *policy)
>   case 0x0f0a:
>   case 0x0f11:
>   case 0x0f12:
> - has_N44_O17_errata[policy->cpu] = 1;
> + set_bit(policy->cpu, has_N44_O17_errata);
>   pr_debug("has errata -- disabling low frequencies\n");
>   }
>  
> @@ -199,7 +199,7 @@ static int cpufreq_p4_cpu_init(struct cpufreq_policy 
> *policy)
>  
>   /* table init */
>   for (i = 1; (p4clockmod_table[i].frequency != CPUFREQ_TABLE_END); i++) {
> - if ((i < 2) && (has_N44_O17_errata[policy->cpu]))
> + if ((i < 2) && test_bit(policy->cpu, has_N44_O17_errata))
>   p4clockmod_table[i].frequency = CPUFREQ_ENTRY_INVALID;
>   else
>   p4clockmod_table[i].frequency = (stock_freq * i)/8;

Looks good, however I think you should #include  to
avoid build failures in the future or on certain architectures.

-- 
Jean Delvare
SUSE L3 Support
--
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the body of a message to majord...@vger.kernel.org
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Re: [PATCH] cpufreq: p4-clockmod: Replace bool_int_array[NR_CPUS] with bitmap

2015-09-27 Thread Denys Vlasenko
On 09/27/2015 06:10 PM, Jean Delvare wrote:
> Looks good, however I think you should #include  to
> avoid build failures in the future or on certain architectures.

 already includes 
on any arch.

p4-clockmod.c builds only on x86 arch, it's Pentium 4
on demand clock modulation/speed scaling module.

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/


Re: [PATCH] cpufreq: p4-clockmod: Replace bool_int_array[NR_CPUS] with bitmap

2015-09-27 Thread Jean Delvare
Hi Denys,

On Sat, 26 Sep 2015 14:47:18 +0200, Denys Vlasenko wrote:
> Straigntforward conversion from
> int has_N44_O17_errata[NR_CPUS]
> to
> DECLARE_BITMAP(has_N44_O17_errata, NR_CPUS)
> 
> Saves about 2 kbytes in bss for NR_CPUS=512.
> 
> Signed-off-by: Denys Vlasenko 
> CC: Viresh Kumar 
> CC: Rafael J. Wysocki 
> CC: Ingo Molnar 
> CC: Bartosz Golaszewski 
> CC: H. Peter Anvin 
> CC: Benoit Cousson 
> CC: Fenghua Yu 
> CC: Guenter Roeck 
> CC: Jean Delvare 
> CC: Jonathan Corbet 
> CC: Peter Zijlstra 
> CC: Thomas Gleixner 
> CC: x...@kernel.org
> CC: linux-kernel@vger.kernel.org
> ---
>  drivers/cpufreq/p4-clockmod.c | 8 
>  1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/cpufreq/p4-clockmod.c b/drivers/cpufreq/p4-clockmod.c
> index 5dd95da..dd15810 100644
> --- a/drivers/cpufreq/p4-clockmod.c
> +++ b/drivers/cpufreq/p4-clockmod.c
> @@ -49,7 +49,7 @@ enum {
>  #define DC_ENTRIES   8
>  
>  
> -static int has_N44_O17_errata[NR_CPUS];
> +static DECLARE_BITMAP(has_N44_O17_errata, NR_CPUS);
>  static unsigned int stock_freq;
>  static struct cpufreq_driver p4clockmod_driver;
>  static unsigned int cpufreq_p4_get(unsigned int cpu);
> @@ -66,7 +66,7 @@ static int cpufreq_p4_setdc(unsigned int cpu, unsigned int 
> newstate)
>   if (l & 0x01)
>   pr_debug("CPU#%d currently thermal throttled\n", cpu);
>  
> - if (has_N44_O17_errata[cpu] &&
> + if (test_bit(cpu, has_N44_O17_errata) &&
>   (newstate == DC_25PT || newstate == DC_DFLT))
>   newstate = DC_38PT;
>  
> @@ -182,7 +182,7 @@ static int cpufreq_p4_cpu_init(struct cpufreq_policy 
> *policy)
>   case 0x0f0a:
>   case 0x0f11:
>   case 0x0f12:
> - has_N44_O17_errata[policy->cpu] = 1;
> + set_bit(policy->cpu, has_N44_O17_errata);
>   pr_debug("has errata -- disabling low frequencies\n");
>   }
>  
> @@ -199,7 +199,7 @@ static int cpufreq_p4_cpu_init(struct cpufreq_policy 
> *policy)
>  
>   /* table init */
>   for (i = 1; (p4clockmod_table[i].frequency != CPUFREQ_TABLE_END); i++) {
> - if ((i < 2) && (has_N44_O17_errata[policy->cpu]))
> + if ((i < 2) && test_bit(policy->cpu, has_N44_O17_errata))
>   p4clockmod_table[i].frequency = CPUFREQ_ENTRY_INVALID;
>   else
>   p4clockmod_table[i].frequency = (stock_freq * i)/8;

Looks good, however I think you should #include  to
avoid build failures in the future or on certain architectures.

-- 
Jean Delvare
SUSE L3 Support
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
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Re: [PATCH] cpufreq: p4-clockmod: Replace bool_int_array[NR_CPUS] with bitmap

2015-09-26 Thread Viresh Kumar
On 26-09-15, 14:47, Denys Vlasenko wrote:
> Straigntforward conversion from
> int has_N44_O17_errata[NR_CPUS]
> to
> DECLARE_BITMAP(has_N44_O17_errata, NR_CPUS)
> 
> Saves about 2 kbytes in bss for NR_CPUS=512.
> 
> Signed-off-by: Denys Vlasenko 
> CC: Viresh Kumar 
> CC: Rafael J. Wysocki 
> CC: Ingo Molnar 
> CC: Bartosz Golaszewski 
> CC: H. Peter Anvin 
> CC: Benoit Cousson 
> CC: Fenghua Yu 
> CC: Guenter Roeck 
> CC: Jean Delvare 
> CC: Jonathan Corbet 
> CC: Peter Zijlstra 
> CC: Thomas Gleixner 
> CC: x...@kernel.org
> CC: linux-kernel@vger.kernel.org
> ---
>  drivers/cpufreq/p4-clockmod.c | 8 
>  1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/cpufreq/p4-clockmod.c b/drivers/cpufreq/p4-clockmod.c
> index 5dd95da..dd15810 100644
> --- a/drivers/cpufreq/p4-clockmod.c
> +++ b/drivers/cpufreq/p4-clockmod.c
> @@ -49,7 +49,7 @@ enum {
>  #define DC_ENTRIES   8
>  
>  
> -static int has_N44_O17_errata[NR_CPUS];
> +static DECLARE_BITMAP(has_N44_O17_errata, NR_CPUS);
>  static unsigned int stock_freq;
>  static struct cpufreq_driver p4clockmod_driver;
>  static unsigned int cpufreq_p4_get(unsigned int cpu);
> @@ -66,7 +66,7 @@ static int cpufreq_p4_setdc(unsigned int cpu, unsigned int 
> newstate)
>   if (l & 0x01)
>   pr_debug("CPU#%d currently thermal throttled\n", cpu);
>  
> - if (has_N44_O17_errata[cpu] &&
> + if (test_bit(cpu, has_N44_O17_errata) &&
>   (newstate == DC_25PT || newstate == DC_DFLT))
>   newstate = DC_38PT;
>  
> @@ -182,7 +182,7 @@ static int cpufreq_p4_cpu_init(struct cpufreq_policy 
> *policy)
>   case 0x0f0a:
>   case 0x0f11:
>   case 0x0f12:
> - has_N44_O17_errata[policy->cpu] = 1;
> + set_bit(policy->cpu, has_N44_O17_errata);
>   pr_debug("has errata -- disabling low frequencies\n");
>   }
>  
> @@ -199,7 +199,7 @@ static int cpufreq_p4_cpu_init(struct cpufreq_policy 
> *policy)
>  
>   /* table init */
>   for (i = 1; (p4clockmod_table[i].frequency != CPUFREQ_TABLE_END); i++) {
> - if ((i < 2) && (has_N44_O17_errata[policy->cpu]))
> + if ((i < 2) && test_bit(policy->cpu, has_N44_O17_errata))
>   p4clockmod_table[i].frequency = CPUFREQ_ENTRY_INVALID;
>   else
>   p4clockmod_table[i].frequency = (stock_freq * i)/8;

Acked-by: Viresh Kumar 
-- 
viresh
--
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[PATCH] cpufreq: p4-clockmod: Replace bool_int_array[NR_CPUS] with bitmap

2015-09-26 Thread Denys Vlasenko
Straigntforward conversion from
int has_N44_O17_errata[NR_CPUS]
to
DECLARE_BITMAP(has_N44_O17_errata, NR_CPUS)

Saves about 2 kbytes in bss for NR_CPUS=512.

Signed-off-by: Denys Vlasenko 
CC: Viresh Kumar 
CC: Rafael J. Wysocki 
CC: Ingo Molnar 
CC: Bartosz Golaszewski 
CC: H. Peter Anvin 
CC: Benoit Cousson 
CC: Fenghua Yu 
CC: Guenter Roeck 
CC: Jean Delvare 
CC: Jonathan Corbet 
CC: Peter Zijlstra 
CC: Thomas Gleixner 
CC: x...@kernel.org
CC: linux-kernel@vger.kernel.org
---
 drivers/cpufreq/p4-clockmod.c | 8 
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/cpufreq/p4-clockmod.c b/drivers/cpufreq/p4-clockmod.c
index 5dd95da..dd15810 100644
--- a/drivers/cpufreq/p4-clockmod.c
+++ b/drivers/cpufreq/p4-clockmod.c
@@ -49,7 +49,7 @@ enum {
 #define DC_ENTRIES 8
 
 
-static int has_N44_O17_errata[NR_CPUS];
+static DECLARE_BITMAP(has_N44_O17_errata, NR_CPUS);
 static unsigned int stock_freq;
 static struct cpufreq_driver p4clockmod_driver;
 static unsigned int cpufreq_p4_get(unsigned int cpu);
@@ -66,7 +66,7 @@ static int cpufreq_p4_setdc(unsigned int cpu, unsigned int 
newstate)
if (l & 0x01)
pr_debug("CPU#%d currently thermal throttled\n", cpu);
 
-   if (has_N44_O17_errata[cpu] &&
+   if (test_bit(cpu, has_N44_O17_errata) &&
(newstate == DC_25PT || newstate == DC_DFLT))
newstate = DC_38PT;
 
@@ -182,7 +182,7 @@ static int cpufreq_p4_cpu_init(struct cpufreq_policy 
*policy)
case 0x0f0a:
case 0x0f11:
case 0x0f12:
-   has_N44_O17_errata[policy->cpu] = 1;
+   set_bit(policy->cpu, has_N44_O17_errata);
pr_debug("has errata -- disabling low frequencies\n");
}
 
@@ -199,7 +199,7 @@ static int cpufreq_p4_cpu_init(struct cpufreq_policy 
*policy)
 
/* table init */
for (i = 1; (p4clockmod_table[i].frequency != CPUFREQ_TABLE_END); i++) {
-   if ((i < 2) && (has_N44_O17_errata[policy->cpu]))
+   if ((i < 2) && test_bit(policy->cpu, has_N44_O17_errata))
p4clockmod_table[i].frequency = CPUFREQ_ENTRY_INVALID;
else
p4clockmod_table[i].frequency = (stock_freq * i)/8;
-- 
1.8.1.4

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[PATCH] cpufreq: p4-clockmod: Replace bool_int_array[NR_CPUS] with bitmap

2015-09-26 Thread Denys Vlasenko
Straigntforward conversion from
int has_N44_O17_errata[NR_CPUS]
to
DECLARE_BITMAP(has_N44_O17_errata, NR_CPUS)

Saves about 2 kbytes in bss for NR_CPUS=512.

Signed-off-by: Denys Vlasenko 
CC: Viresh Kumar 
CC: Rafael J. Wysocki 
CC: Ingo Molnar 
CC: Bartosz Golaszewski 
CC: H. Peter Anvin 
CC: Benoit Cousson 
CC: Fenghua Yu 
CC: Guenter Roeck 
CC: Jean Delvare 
CC: Jonathan Corbet 
CC: Peter Zijlstra 
CC: Thomas Gleixner 
CC: x...@kernel.org
CC: linux-kernel@vger.kernel.org
---
 drivers/cpufreq/p4-clockmod.c | 8 
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/cpufreq/p4-clockmod.c b/drivers/cpufreq/p4-clockmod.c
index 5dd95da..dd15810 100644
--- a/drivers/cpufreq/p4-clockmod.c
+++ b/drivers/cpufreq/p4-clockmod.c
@@ -49,7 +49,7 @@ enum {
 #define DC_ENTRIES 8
 
 
-static int has_N44_O17_errata[NR_CPUS];
+static DECLARE_BITMAP(has_N44_O17_errata, NR_CPUS);
 static unsigned int stock_freq;
 static struct cpufreq_driver p4clockmod_driver;
 static unsigned int cpufreq_p4_get(unsigned int cpu);
@@ -66,7 +66,7 @@ static int cpufreq_p4_setdc(unsigned int cpu, unsigned int 
newstate)
if (l & 0x01)
pr_debug("CPU#%d currently thermal throttled\n", cpu);
 
-   if (has_N44_O17_errata[cpu] &&
+   if (test_bit(cpu, has_N44_O17_errata) &&
(newstate == DC_25PT || newstate == DC_DFLT))
newstate = DC_38PT;
 
@@ -182,7 +182,7 @@ static int cpufreq_p4_cpu_init(struct cpufreq_policy 
*policy)
case 0x0f0a:
case 0x0f11:
case 0x0f12:
-   has_N44_O17_errata[policy->cpu] = 1;
+   set_bit(policy->cpu, has_N44_O17_errata);
pr_debug("has errata -- disabling low frequencies\n");
}
 
@@ -199,7 +199,7 @@ static int cpufreq_p4_cpu_init(struct cpufreq_policy 
*policy)
 
/* table init */
for (i = 1; (p4clockmod_table[i].frequency != CPUFREQ_TABLE_END); i++) {
-   if ((i < 2) && (has_N44_O17_errata[policy->cpu]))
+   if ((i < 2) && test_bit(policy->cpu, has_N44_O17_errata))
p4clockmod_table[i].frequency = CPUFREQ_ENTRY_INVALID;
else
p4clockmod_table[i].frequency = (stock_freq * i)/8;
-- 
1.8.1.4

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Re: [PATCH] cpufreq: p4-clockmod: Replace bool_int_array[NR_CPUS] with bitmap

2015-09-26 Thread Viresh Kumar
On 26-09-15, 14:47, Denys Vlasenko wrote:
> Straigntforward conversion from
> int has_N44_O17_errata[NR_CPUS]
> to
> DECLARE_BITMAP(has_N44_O17_errata, NR_CPUS)
> 
> Saves about 2 kbytes in bss for NR_CPUS=512.
> 
> Signed-off-by: Denys Vlasenko 
> CC: Viresh Kumar 
> CC: Rafael J. Wysocki 
> CC: Ingo Molnar 
> CC: Bartosz Golaszewski 
> CC: H. Peter Anvin 
> CC: Benoit Cousson 
> CC: Fenghua Yu 
> CC: Guenter Roeck 
> CC: Jean Delvare 
> CC: Jonathan Corbet 
> CC: Peter Zijlstra 
> CC: Thomas Gleixner 
> CC: x...@kernel.org
> CC: linux-kernel@vger.kernel.org
> ---
>  drivers/cpufreq/p4-clockmod.c | 8 
>  1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/cpufreq/p4-clockmod.c b/drivers/cpufreq/p4-clockmod.c
> index 5dd95da..dd15810 100644
> --- a/drivers/cpufreq/p4-clockmod.c
> +++ b/drivers/cpufreq/p4-clockmod.c
> @@ -49,7 +49,7 @@ enum {
>  #define DC_ENTRIES   8
>  
>  
> -static int has_N44_O17_errata[NR_CPUS];
> +static DECLARE_BITMAP(has_N44_O17_errata, NR_CPUS);
>  static unsigned int stock_freq;
>  static struct cpufreq_driver p4clockmod_driver;
>  static unsigned int cpufreq_p4_get(unsigned int cpu);
> @@ -66,7 +66,7 @@ static int cpufreq_p4_setdc(unsigned int cpu, unsigned int 
> newstate)
>   if (l & 0x01)
>   pr_debug("CPU#%d currently thermal throttled\n", cpu);
>  
> - if (has_N44_O17_errata[cpu] &&
> + if (test_bit(cpu, has_N44_O17_errata) &&
>   (newstate == DC_25PT || newstate == DC_DFLT))
>   newstate = DC_38PT;
>  
> @@ -182,7 +182,7 @@ static int cpufreq_p4_cpu_init(struct cpufreq_policy 
> *policy)
>   case 0x0f0a:
>   case 0x0f11:
>   case 0x0f12:
> - has_N44_O17_errata[policy->cpu] = 1;
> + set_bit(policy->cpu, has_N44_O17_errata);
>   pr_debug("has errata -- disabling low frequencies\n");
>   }
>  
> @@ -199,7 +199,7 @@ static int cpufreq_p4_cpu_init(struct cpufreq_policy 
> *policy)
>  
>   /* table init */
>   for (i = 1; (p4clockmod_table[i].frequency != CPUFREQ_TABLE_END); i++) {
> - if ((i < 2) && (has_N44_O17_errata[policy->cpu]))
> + if ((i < 2) && test_bit(policy->cpu, has_N44_O17_errata))
>   p4clockmod_table[i].frequency = CPUFREQ_ENTRY_INVALID;
>   else
>   p4clockmod_table[i].frequency = (stock_freq * i)/8;

Acked-by: Viresh Kumar 
-- 
viresh
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