Correct r335242. Use unsigned cast instead of abs(). Using abs() gives
incorrect result when ticks has already wrapped, and are about to reach the cr_ticks value (cr_ticks - ticks < hz). Submitted by: bde
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Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=335748
@ -140,7 +140,7 @@ counter_ratecheck(struct counter_rate *cr, int64_t limit)
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val = cr->cr_over;
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now = ticks;
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if (abs(now - cr->cr_ticks) >= hz) {
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if ((u_int)(now - cr->cr_ticks) >= hz) {
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/*
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* Time to clear the structure, we are in the next second.
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* First try unlocked read, and then proceed with atomic.
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@ -151,7 +151,7 @@ counter_ratecheck(struct counter_rate *cr, int64_t limit)
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* Check if other thread has just went through the
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* reset sequence before us.
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*/
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if (abs(now - cr->cr_ticks) >= hz) {
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if ((u_int)(now - cr->cr_ticks) >= hz) {
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val = counter_u64_fetch(cr->cr_rate);
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counter_u64_zero(cr->cr_rate);
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cr->cr_over = 0;
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