mirror of
https://github.com/torvalds/linux.git
synced 2024-11-05 11:32:04 +00:00
5075baca2e
Provide __ucmpdi2() helper function on 31 bit so we don't run again and again in compile errors like this one: kernel/built-in.o: In function `T.689': perf_counter.c:(.text+0x56c86): undefined reference to `__ucmpdi2' Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
27 lines
474 B
C
27 lines
474 B
C
#include <linux/module.h>
|
|
|
|
union ull_union {
|
|
unsigned long long ull;
|
|
struct {
|
|
unsigned int high;
|
|
unsigned int low;
|
|
} ui;
|
|
};
|
|
|
|
int __ucmpdi2(unsigned long long a, unsigned long long b)
|
|
{
|
|
union ull_union au = {.ull = a};
|
|
union ull_union bu = {.ull = b};
|
|
|
|
if (au.ui.high < bu.ui.high)
|
|
return 0;
|
|
else if (au.ui.high > bu.ui.high)
|
|
return 2;
|
|
if (au.ui.low < bu.ui.low)
|
|
return 0;
|
|
else if (au.ui.low > bu.ui.low)
|
|
return 2;
|
|
return 1;
|
|
}
|
|
EXPORT_SYMBOL(__ucmpdi2);
|