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authorBaruch Siach <baruch@tkos.co.il>2013-06-17 11:29:43 +0300
committerChris Zankel <chris@zankel.net>2013-07-08 01:11:37 -0700
commite504c4b6076d9ec1caccaac65803fe3fc29afec8 (patch)
tree9a068eafb50e22b431cdc2d02590c7a92ae36d70 /arch/xtensa
parented9dfed62c6c057c1c51295d4373ae55c9284a10 (diff)
downloadlinux-e504c4b6076d9ec1caccaac65803fe3fc29afec8.tar.gz
xtensa: cleanup ccount frequency tracking
Remove unused nsec_per_ccount, and rename ccount_per_jiffy to ccount_preq. Signed-off-by: Baruch Siach <baruch@tkos.co.il> Signed-off-by: Chris Zankel <chris@zankel.net>
Diffstat (limited to 'arch/xtensa')
-rw-r--r--arch/xtensa/include/asm/timex.h5
-rw-r--r--arch/xtensa/kernel/platform.c2
-rw-r--r--arch/xtensa/kernel/time.c7
-rw-r--r--arch/xtensa/platforms/xtfpga/setup.c3
-rw-r--r--arch/xtensa/variants/s6000/delay.c3
5 files changed, 8 insertions, 12 deletions
diff --git a/arch/xtensa/include/asm/timex.h b/arch/xtensa/include/asm/timex.h
index c47989a0e3a..69f901713fb 100644
--- a/arch/xtensa/include/asm/timex.h
+++ b/arch/xtensa/include/asm/timex.h
@@ -36,9 +36,8 @@
#endif
#ifdef CONFIG_XTENSA_CALIBRATE_CCOUNT
-extern unsigned long ccount_per_jiffy;
-extern unsigned long nsec_per_ccount;
-#define CCOUNT_PER_JIFFY ccount_per_jiffy
+extern unsigned long ccount_freq;
+#define CCOUNT_PER_JIFFY (ccount_freq / HZ)
#else
#define CCOUNT_PER_JIFFY (CONFIG_XTENSA_CPU_CLOCK*(1000000UL/HZ))
#endif
diff --git a/arch/xtensa/kernel/platform.c b/arch/xtensa/kernel/platform.c
index da827cbb2f5..1cf008284dd 100644
--- a/arch/xtensa/kernel/platform.c
+++ b/arch/xtensa/kernel/platform.c
@@ -41,6 +41,6 @@ _F(void, pcibios_init, (void), { });
_F(void, calibrate_ccount, (void),
{
pr_err("ERROR: Cannot calibrate cpu frequency! Assuming 10MHz.\n");
- ccount_per_jiffy = 10 * (1000000UL/HZ);
+ ccount_freq = 10 * 1000000UL;
});
#endif
diff --git a/arch/xtensa/kernel/time.c b/arch/xtensa/kernel/time.c
index ffb47410431..a32bc2ea798 100644
--- a/arch/xtensa/kernel/time.c
+++ b/arch/xtensa/kernel/time.c
@@ -28,8 +28,7 @@
#include <asm/platform.h>
#ifdef CONFIG_XTENSA_CALIBRATE_CCOUNT
-unsigned long ccount_per_jiffy; /* per 1/HZ */
-unsigned long nsec_per_ccount; /* nsec per ccount increment */
+unsigned long ccount_freq; /* ccount Hz */
#endif
static cycle_t ccount_read(struct clocksource *cs)
@@ -57,8 +56,8 @@ void __init time_init(void)
#ifdef CONFIG_XTENSA_CALIBRATE_CCOUNT
printk("Calibrating CPU frequency ");
platform_calibrate_ccount();
- printk("%d.%02d MHz\n", (int)ccount_per_jiffy/(1000000/HZ),
- (int)(ccount_per_jiffy/(10000/HZ))%100);
+ printk("%d.%02d MHz\n", (int)ccount_freq/1000000,
+ (int)(ccount_freq/10000)%100);
#endif
clocksource_register_hz(&ccount_clocksource, CCOUNT_PER_JIFFY * HZ);
diff --git a/arch/xtensa/platforms/xtfpga/setup.c b/arch/xtensa/platforms/xtfpga/setup.c
index c7ce62ff73f..74bb74fa3f8 100644
--- a/arch/xtensa/platforms/xtfpga/setup.c
+++ b/arch/xtensa/platforms/xtfpga/setup.c
@@ -179,8 +179,7 @@ void __init platform_calibrate_ccount(void)
if (!clk_freq)
clk_freq = *(long *)XTFPGA_CLKFRQ_VADDR;
- ccount_per_jiffy = clk_freq / HZ;
- nsec_per_ccount = 1000000000UL / clk_freq;
+ ccount_freq = clk_freq;
}
#endif
diff --git a/arch/xtensa/variants/s6000/delay.c b/arch/xtensa/variants/s6000/delay.c
index 54b2b573f16..baefd3a3c2a 100644
--- a/arch/xtensa/variants/s6000/delay.c
+++ b/arch/xtensa/variants/s6000/delay.c
@@ -22,6 +22,5 @@ void platform_calibrate_ccount(void)
a = b;
} while (--i >= 0);
b -= a;
- nsec_per_ccount = (LOOPS * 10000) / b;
- ccount_per_jiffy = b * (100000UL / (LOOPS * HZ));
+ ccount_freq = b * (100000UL / LOOPS);
}