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[NET]: div64_64 consolidate (rev3)

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Here is the current version of the 64 bit divide common code.

Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Stephen Hemminger 2007-03-25 19:54:23 -07:00 • committed by David S. Miller
parent 9d729f72dc
commit 3927f2e8f9
13 changed files with 60 additions and 63 deletions
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21
net/ipv4/tcp_yeah.c
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@ -73,27 +73,6 @@ static void tcp_yeah_pkts_acked(struct sock *sk, u32 pkts_acked)
yeah->pkts_acked = pkts_acked;
}
/* 64bit divisor, dividend and result. dynamic precision */
static inline u64 div64_64(u64 dividend, u64 divisor)
{
u32 d = divisor;
if (divisor > 0xffffffffULL) {
unsigned int shift = fls(divisor >> 32);
d = divisor >> shift;
dividend >>= shift;
}
/* avoid 64 bit division if possible */
if (dividend >> 32)
do_div(dividend, d);
else
dividend = (u32) dividend / d;
return dividend;
}
static void tcp_yeah_cong_avoid(struct sock *sk, u32 ack,
u32 seq_rtt, u32 in_flight, int flag)
{