30 lines
550 B
C
30 lines
550 B
C
#include "time.h"
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unsigned long volatile jiffies = INITIAL_JIFFIES;
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unsigned int jiffies_to_msecs(const unsigned long j)
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{
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return (1000L / HZ) * j;
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}
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unsigned int jiffies_to_usecs(const unsigned long j)
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{
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return (1000000L / HZ) * j;
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}
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unsigned long msecs_to_jiffies(const unsigned int m)
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{
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#if HZ >= 1000 && !(HZ % 1000)
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return m * (HZ / 1000L);
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#else
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// This could overflow
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return (m * HZ) / 1000L;
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#endif
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}
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unsigned long usecs_to_jiffies(const unsigned int u)
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{
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// This could overflow
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return (u * HZ) / 1000000L;
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}
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