hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

[PATCH] ppc32: Fix timekeeping 

Interestingly enough, ppc32 had broken timekeeping for ages...  It
worked, but probably drifted a bit more than could be explained by the
actual bad precision of the timebase calibration.  We discovered that
recently when somebody figured out that the common code was using
CLOCK_TICK_RATE to correct the timekeeing, and ppc32 had a completely
bogus value for it.

This patch turns it into something saner.  Probably not as good as doing
something based on the actual timebase frequency precision but I'll
leave that sort of math to others.  This at least makes it better for
the common HZ values.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Benjamin Herrenschmidt 2005-10-12 11:39:33 +10:00 committed by Linus Torvalds
parent 9d624ea474
commit cbd27b8ced
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
include/asm-powerpc/timex.h
View File

@ -10,7 +10,7 @@
#include <linux/config.h> #include <linux/config.h>
#include <asm/cputable.h> #include <asm/cputable.h>
#define CLOCK_TICK_RATE 1193180 /* Underlying HZ */ #define CLOCK_TICK_RATE 1024000 /* Underlying HZ */
typedef unsigned long cycles_t; typedef unsigned long cycles_t;