Messages in this thread | | | Date | Wed, 13 May 2020 13:34:24 +0200 | From | Jiri Olsa <> | Subject | Re: [PATCH 4/4] perf expr: Report line number with error |
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On Wed, May 13, 2020 at 12:09:30AM -0700, Ian Rogers wrote: > On Mon, May 11, 2020 at 1:54 PM Jiri Olsa <jolsa@kernel.org> wrote: > > > > Display line number on when parsing custom metrics file, like: > > > > $ cat metrics > > // IPC > > mine1 = inst_retired.any / cpu_clk_unhalted.thread; > > > > krava > > $ sudo perf stat --metrics-file ./metrics -M mine1 -a -I 1000 --metric-only > > failed to parse metrics file: ./metrics:4 > > > > Please note that because the grammar is flexible on new lines, > > the syntax could be broken on the next 'not fitting' item and > > not the first wrong word, like: > > > > $ cat metrics > > // IPC > > krava > > mine1 = inst_retired.any / cpu_clk_unhalted.thread; > > $ sudo perf stat --metrics-file ./metrics -M mine1 -a -I 1000 --metric-only > > failed to parse metrics file: ./metrics:3 > > A line number is better than nothing :-) It'd be nice to be told about > broken events and more information about what's broken in the line. A > common failure is @ vs / encoding and also no-use or misuse of \\. > Perhaps expand the test coverage.
yep, error reporting needs more changes.. but the line is crucial ;-)
jirka
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