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lockstat: fix numerical output rounding error

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Fix rounding error in /proc/lock_stat numerical output.

On occasion the two digit fractional part contains the three
digit value '100'.  This is due to a bug in the rounding algorithm
which pushes values in the range '95..99' to '100' rather than
to '00' + an increment to the integer part.  For example,

	- 123456.100      old display
	+ 123457.00	  new display

Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Joe Korty 2008-08-25 17:15:33 -04:00 committed by Ingo Molnar
parent 83097aca85
commit 2189459d25
1 changed files with 2 additions and 1 deletions
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kernel/lockdep_proc.c
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@ -472,8 +472,9 @@ static void snprint_time(char *buf, size_t bufsiz, s64 nr)
{
unsigned long rem;
nr += 5; /* for display rounding */
rem = do_div(nr, 1000); /* XXX: do_div_signed */
snprintf(buf, bufsiz, "%lld.%02d", (long long)nr, ((int)rem+5)/10);
snprintf(buf, bufsiz, "%lld.%02d", (long long)nr, (int)rem/10);
}
static void seq_time(struct seq_file *m, s64 time)