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Subject[PATCH] cpufreq: p4-clockmod: Replace bool_int_array[NR_CPUS] with bitmap
Date
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 <dvlasenk@redhat.com>
CC: Viresh Kumar <viresh.kumar@linaro.org>
CC: Rafael J. Wysocki <rjw@rjwysocki.net>
CC: Ingo Molnar <mingo@kernel.org>
CC: Bartosz Golaszewski <bgolaszewski@baylibre.com>
CC: H. Peter Anvin <hpa@zytor.com>
CC: Benoit Cousson <bcousson@baylibre.com>
CC: Fenghua Yu <fenghua.yu@intel.com>
CC: Guenter Roeck <linux@roeck-us.net>
CC: Jean Delvare <jdelvare@suse.de>
CC: Jonathan Corbet <corbet@lwn.net>
CC: Peter Zijlstra <peterz@infradead.org>
CC: Thomas Gleixner <tglx@linutronix.de>
CC: x86@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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