* [PATCH] input: make 2 macros in gameport.c TSC-aware
@ 2007-06-11 4:12 Miltiadis Margaronis
2007-06-12 5:24 ` Dmitry Torokhov
0 siblings, 1 reply; 2+ messages in thread
From: Miltiadis Margaronis @ 2007-06-11 4:12 UTC (permalink / raw)
To: dmitry.torokhov; +Cc: linux-kernel, linux-input, linux-joystick
This makes DELTA and GET_TIME in drivers/input/gameport/gameport.c
similar to the ones in drivers/input/joystick/analog.c . Worked on
2.6.22-rc4-git2.
Signed-off-by: Miltiadis Margaronis <mmargaron@gmail.com>
--- a/drivers/input/gameport/gameport.c 2007-06-05 03:57:02.000000000 +0300
+++ b/drivers/input/gameport/gameport.c 2007-06-09 07:20:45.000000000 +0300
@@ -64,8 +64,8 @@ static void gameport_disconnect_port(str
#include <asm/i8253.h>
-#define DELTA(x,y) ((y)-(x)+((y)<(x)?1193182/HZ:0))
-#define GET_TIME(x) do { x = get_time_pit(); } while (0)
+#define DELTA(x,y) (cpu_has_tsc ? ((y) - (x)) : ((y) - (x) +((y) < (x) ? CLOCK_TICK_RATE / HZ : 0)))
+#define GET_TIME(x) do { if (cpu_has_tsc) rdtscl(x); else x = get_time_pit(); } while (0)
static unsigned int get_time_pit(void)
{
--
Miltos
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [PATCH] input: make 2 macros in gameport.c TSC-aware
2007-06-11 4:12 [PATCH] input: make 2 macros in gameport.c TSC-aware Miltiadis Margaronis
@ 2007-06-12 5:24 ` Dmitry Torokhov
0 siblings, 0 replies; 2+ messages in thread
From: Dmitry Torokhov @ 2007-06-12 5:24 UTC (permalink / raw)
To: linux-joystick; +Cc: Miltiadis Margaronis, linux-kernel, linux-input
Hi,
On Monday 11 June 2007 00:12, Miltiadis Margaronis wrote:
>
> This makes DELTA and GET_TIME in drivers/input/gameport/gameport.c
> similar to the ones in drivers/input/joystick/analog.c . Worked on
> 2.6.22-rc4-git2.
>
I was told with the introduction of tickless kernels and such the best
option is to convert gameport to use hires timers.
--
Dmitry
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2007-06-11 4:12 [PATCH] input: make 2 macros in gameport.c TSC-aware Miltiadis Margaronis
2007-06-12 5:24 ` Dmitry Torokhov
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