Messages in this thread Patch in this message | | | Date | Wed, 1 Nov 2006 15:51:00 +0100 | From | Luotao Fu <> | Subject | [PATCH] latency tracer support for ARM ep93xx platform |
| |
Hi, the following patch adds hardware support for the latency tracer in -rt patch on ARM ep93xx platform.
regards Luotao Fu -- Dipl.-Ing. Luotao Fu | http://www.pengutronix.de Pengutronix - Linux Solutions for Science and Industry Handelsregister: Amtsgericht Hildesheim, HRA 2686 Hannoversche Str. 2, 31134 Hildesheim, Germany Phone: +49-5121-206917-0 | Fax: +49-5121-206917-9
Adds latency tracer support for ep93xx platform.
Signed-off-by: Luotao Fu <lfu@pengutronix.de>
Index: linux-2.6.18-rt.sec/include/asm-arm/arch-ep93xx/timex.h =================================================================== --- include/asm-arm/arch-ep93xx/timex.h +++ include/asm-arm/arch-ep93xx/timex.h @@ -3,3 +3,10 @@ */ #define CLOCK_TICK_RATE 983040 + +#include <asm/io.h> +#include <asm-arm/arch-ep93xx/ep93xx-regs.h> + +#define mach_read_cycles() readl(EP93XX_TIMER4_VALUE_LOW) +#define mach_cycles_to_usecs(d) (((d) * ((1000000LL << 32) / CLOCK_TICK_RATE)) >> 32) +#define mach_usecs_to_cycles(d) (((d) * (((long long)CLOCK_TICK_RATE << 32) / 1000000)) >> 32)[unhandled content-type:application/pgp-signature] | |