Messages in this thread | | | Date | Tue, 16 Jul 2019 10:51:12 +0200 | From | Jiri Olsa <> | Subject | Re: [PATCH] perf diff: Report noisy for cycles diff |
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On Fri, Jul 12, 2019 at 03:53:55PM +0800, Jin Yao wrote: > This patch prints the stddev and hist for the cycles diff of > program block. It can help us to understand if the cycles diff > is noisy or not.
I'm getting compile error:
CC builtin-diff.o builtin-diff.c: In function ‘compute_cycles_diff’: builtin-diff.c:712:10: error: taking the absolute value of unsigned type ‘u64’ {aka ‘long unsigned int’} has no effect [-Werror=absolute-value] 712 | labs(pair->block_info->cycles_spark[i] - | ^~~~ cc1: all warnings being treated as errors mv: cannot stat './.builtin-diff.o.tmp': No such file or directory
jirka
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