Commit 2189459d authored Aug 25, 2008 by Joe Korty Committed by Ingo Molnar Aug 26, 2008

lockstat: fix numerical output rounding error



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>

parent 83097aca

kernel/lockdep_proc.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -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)

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