[PATCH 1/2] Make USECS_PER_JIFFY available for generic use
From: Arpit Goel <hidden>
Date: 2013-07-30 12:42:24
Also in:
linux-m68k, lkml, sparclinux
Subsystem:
arm port, m68k architecture, m68k on hp9000/300, s390 architecture, sparc + ultrasparc (sparc/sparc64), the rest · Maintainers:
Russell King, Geert Uytterhoeven, Philip Blundell, Heiko Carstens, Vasily Gorbik, Alexander Gordeev, "David S. Miller", Andreas Larsson, Linus Torvalds
USECS_PER_JIFFY is used in several ARCHITECTURE C files.Now USECS_PER_JIFFY has been moved from architecture specific C files to architecture specific timex.h. This enables users to include timex.h and make use of USECS_PER_JIFFY. Signed-off-by: Arpit Goel <redacted> --- arch/arm/include/asm/timex.h | 2 ++ arch/arm/kernel/time.c | 3 --- arch/m32r/include/asm/timex.h | 2 ++ arch/m32r/kernel/time.c | 3 --- arch/m68k/hp300/time.c | 4 +--- arch/m68k/include/asm/timex.h | 2 ++ arch/s390/include/asm/timex.h | 2 ++ arch/s390/kernel/time.c | 2 -- arch/sparc/include/asm/timex_32.h | 2 ++ arch/sparc/include/asm/timex_64.h | 2 ++ arch/sparc/kernel/pcic.c | 1 - 11 files changed, 13 insertions(+), 12 deletions(-)
diff --git a/arch/arm/include/asm/timex.h b/arch/arm/include/asm/timex.h
index 83f2aa8..55a4f34 100644
--- a/arch/arm/include/asm/timex.h
+++ b/arch/arm/include/asm/timex.h@@ -18,6 +18,8 @@ #include <mach/timex.h> #endif +/* change this if you have some constant time drift */ +#define USECS_PER_JIFFY (1000000/HZ) typedef unsigned long cycles_t; #define get_cycles() ({ cycles_t c; read_current_timer(&c) ? 0 : c; })
diff --git a/arch/arm/kernel/time.c b/arch/arm/kernel/time.c
index 98aee32..7aaead4 100644
--- a/arch/arm/kernel/time.c
+++ b/arch/arm/kernel/time.c@@ -38,9 +38,6 @@ DEFINE_SPINLOCK(rtc_lock); EXPORT_SYMBOL(rtc_lock); #endif /* pc-style 'CMOS' RTC support */ -/* change this if you have some constant time drift */ -#define USECS_PER_JIFFY (1000000/HZ) - #ifdef CONFIG_SMP unsigned long profile_pc(struct pt_regs *regs) {
diff --git a/arch/m32r/include/asm/timex.h b/arch/m32r/include/asm/timex.h
index bb9fe4f..ff8e6b1 100644
--- a/arch/m32r/include/asm/timex.h
+++ b/arch/m32r/include/asm/timex.h@@ -9,6 +9,8 @@ #define CLOCK_TICK_RATE (CONFIG_BUS_CLOCK / CONFIG_TIMER_DIVIDE) #define CLOCK_TICK_FACTOR 20 /* Factor of both 1000000 and CLOCK_TICK_RATE */ +/* change this if you have some constant time drift */ +#define USECS_PER_JIFFY (1000000/HZ) #ifdef __KERNEL__ /*
diff --git a/arch/m32r/kernel/time.c b/arch/m32r/kernel/time.c
index 1a15f81..0608e02 100644
--- a/arch/m32r/kernel/time.c
+++ b/arch/m32r/kernel/time.c@@ -52,9 +52,6 @@ extern void smp_local_timer_interrupt(void); * Change this if you have some constant time drift */ -/* This is for machines which generate the exact clock. */ -#define USECS_PER_JIFFY (1000000/HZ) - static unsigned long latch; static u32 m32r_gettimeoffset(void)
diff --git a/arch/m68k/hp300/time.c b/arch/m68k/hp300/time.c
index 749543b..9d751d3 100644
--- a/arch/m68k/hp300/time.c
+++ b/arch/m68k/hp300/time.c@@ -12,6 +12,7 @@ #include <linux/sched.h> #include <linux/kernel_stat.h> #include <linux/interrupt.h> +#include <linux/time.h> #include <asm/machdep.h> #include <asm/irq.h> #include <asm/io.h>
@@ -30,9 +31,6 @@ #define CLKMSB2 0x9 #define CLKMSB3 0xD -/* This is for machines which generate the exact clock. */ -#define USECS_PER_JIFFY (1000000/HZ) - #define INTVAL ((10000 / 4) - 1) static irqreturn_t hp300_tick(int irq, void *dev_id)
diff --git a/arch/m68k/include/asm/timex.h b/arch/m68k/include/asm/timex.h
index 6759dad..44f2603 100644
--- a/arch/m68k/include/asm/timex.h
+++ b/arch/m68k/include/asm/timex.h@@ -21,6 +21,8 @@ #define CLOCK_TICK_RATE 1193180 /* Underlying HZ */ #endif +/* change this if you have some constant time drift */ +#define USECS_PER_JIFFY (1000000/HZ) typedef unsigned long cycles_t; static inline cycles_t get_cycles(void)
diff --git a/arch/s390/include/asm/timex.h b/arch/s390/include/asm/timex.h
index 8ad8af9..91175c9 100644
--- a/arch/s390/include/asm/timex.h
+++ b/arch/s390/include/asm/timex.h@@ -13,6 +13,8 @@ /* The value of the TOD clock for 1.1.1970. */ #define TOD_UNIX_EPOCH 0x7d91048bca000000ULL +/* change this if you have some constant time drift */ +#define USECS_PER_JIFFY (1000000/HZ) /* Inline functions for clock register access. */ static inline int set_tod_clock(__u64 time)
diff --git a/arch/s390/kernel/time.c b/arch/s390/kernel/time.c
index 876546b..eb659b6 100644
--- a/arch/s390/kernel/time.c
+++ b/arch/s390/kernel/time.c@@ -49,8 +49,6 @@ #include <asm/cio.h> #include "entry.h" -/* change this if you have some constant time drift */ -#define USECS_PER_JIFFY ((unsigned long) 1000000/HZ) #define CLK_TICKS_PER_JIFFY ((unsigned long) USECS_PER_JIFFY << 12) u64 sched_clock_base_cc = -1; /* Force to data section. */
diff --git a/arch/sparc/include/asm/timex_32.h b/arch/sparc/include/asm/timex_32.h
index b6ccdb0..cb7f412 100644
--- a/arch/sparc/include/asm/timex_32.h
+++ b/arch/sparc/include/asm/timex_32.h@@ -7,6 +7,8 @@ #define _ASMsparc_TIMEX_H #define CLOCK_TICK_RATE 1193180 /* Underlying HZ */ +/* change this if you have some constant time drift */ +#define USECS_PER_JIFFY (1000000/HZ) /* XXX Maybe do something better@some point... -DaveM */ typedef unsigned long cycles_t;
diff --git a/arch/sparc/include/asm/timex_64.h b/arch/sparc/include/asm/timex_64.h
index 18b30bc..1a5738a 100644
--- a/arch/sparc/include/asm/timex_64.h
+++ b/arch/sparc/include/asm/timex_64.h@@ -9,6 +9,8 @@ #include <asm/timer.h> #define CLOCK_TICK_RATE 1193180 /* Underlying HZ */ +/* change this if you have some constant time drift */ +#define USECS_PER_JIFFY (1000000/HZ) /* Getting on the cycle counter on sparc64. */ typedef unsigned long cycles_t;
diff --git a/arch/sparc/kernel/pcic.c b/arch/sparc/kernel/pcic.c
index 09f4fdd..2a62932 100644
--- a/arch/sparc/kernel/pcic.c
+++ b/arch/sparc/kernel/pcic.c@@ -703,7 +703,6 @@ static void pcic_clear_clock_irq(void) } /* CPU frequency is 100 MHz, timer increments every 4 CPU clocks */ -#define USECS_PER_JIFFY (1000000 / HZ) #define TICK_TIMER_LIMIT ((100 * 1000000 / 4) / HZ) static unsigned int pcic_cycles_offset(void)
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1.8.1.4