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author | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 12:17:53 -0700 |
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committer | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 15:44:42 -0700 |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/arch/score/include/asm/delay.h | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/arch/score/include/asm/delay.h')
-rw-r--r-- | kernel/arch/score/include/asm/delay.h | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/kernel/arch/score/include/asm/delay.h b/kernel/arch/score/include/asm/delay.h new file mode 100644 index 000000000..529e49471 --- /dev/null +++ b/kernel/arch/score/include/asm/delay.h @@ -0,0 +1,28 @@ +#ifndef _ASM_SCORE_DELAY_H +#define _ASM_SCORE_DELAY_H + +#include <asm-generic/param.h> + +static inline void __delay(unsigned long loops) +{ + /* 3 cycles per loop. */ + __asm__ __volatile__ ( + "1:\tsubi\t%0, 3\n\t" + "cmpz.c\t%0\n\t" + "ble\t1b\n\t" + : "=r" (loops) + : "0" (loops)); +} + +static inline void __udelay(unsigned long usecs) +{ + unsigned long loops_per_usec; + + loops_per_usec = (loops_per_jiffy * HZ) / 1000000; + + __delay(usecs * loops_per_usec); +} + +#define udelay(usecs) __udelay(usecs) + +#endif /* _ASM_SCORE_DELAY_H */ |