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git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2025-09-04 20:19:47 +08:00
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>
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union ull_union {
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unsigned long long ull;
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struct {
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unsigned int high;
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unsigned int low;
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} ui;
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};
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int __ucmpdi2(unsigned long long a, unsigned long long b)
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{
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union ull_union au = {.ull = a};
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union ull_union bu = {.ull = b};
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if (au.ui.high < bu.ui.high)
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return 0;
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else if (au.ui.high > bu.ui.high)
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return 2;
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if (au.ui.low < bu.ui.low)
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return 0;
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else if (au.ui.low > bu.ui.low)
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return 2;
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return 1;
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}
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EXPORT_SYMBOL(__ucmpdi2);
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