Thread (18 messages) 18 messages, 7 authors, 2021-10-13

Re: [PATCH 0/3] perf tools: Enable strict JSON parsing

From: James Clark <hidden>
Date: 2021-10-12 13:30:57
Also in: linux-perf-users, lkml


On 08/10/2021 20:00, Arnaldo Carvalho de Melo wrote:
Em Fri, Oct 08, 2021 at 04:56:55PM +0530, kajoljain escreveu:
quoted

On 10/8/21 3:32 PM, James Clark wrote:
quoted

On 08/10/2021 08:43, kajoljain wrote:
quoted

On 10/7/21 4:35 PM, James Clark wrote:
quoted
After a discussion on "[PATCH 1/4] perf vendor events: Syntax corrections in Neoverse N1 json",
John Garry suggested that we can just modify the parser to make it more strict. Hopefully this will
remove the need to apply any future JSON comma fixup commits.

Applies on top of "[PATCH v2 1/3] perf vendor events: Syntax corrections in Neoverse N1 json" on
perf/core.

Also available at:
  git clone --branch james-json-parse-fix git@git.gitlab.arm.com:linux-arm/linux-jc.git
Hi James,
   Do we have any dependency patches on top of this patch series. I am
reviewing and testing it, but in both powerpc and x86 system I am
getting build issue. Not sure if I am missing something> 
I am trying your changes on top of upstream perf.

pmu-events/arch/test/test_soc/sys/uncore.json: json error Invalid
character inside JSON string
Hi Kajol,

A trailing comma was fixed in this file 3 weeks ago at b8b350a. Can you
confirm if you have updated to get this commit on perf core?

Alternately you could pull from my branch above which is up to date enough
to include it.
Hi James,
   Thanks for pointing it. Not getting build issue now.
quoted
The file is in pmu-events/arch/test/ so I would expect it to fail on all platforms.
quoted
make[3]: *** [pmu-events/Build:18: pmu-events/pmu-events.c] Error 1
make[3]: *** Deleting file 'pmu-events/pmu-events.c'
make[2]: *** [Makefile.perf:667: pmu-events/pmu-events-in.o] Error 2
make[2]: *** Waiting for unfinished jobs....
make[1]: *** [Makefile.perf:238: sub-make] Error 2
make: *** [Makefile:70: all] Error 2

Also, Is it possible to add line number along with file name while
showing this error `json error Invalid character inside JSON string`.
It might make it easy to fix.
I can add a character number with the following fix if you think that would
be good enough? A line number might be a bigger change and involve keeping
track of newline characters.
Sure. I think then we can skip this change. Not sure if character
number will be helpful.

Patch-set looks good to me.

Reviewed-by Kajol Jain[off-list ref]
Applied ok as-is to my perf/core branch, applied and added your
Reviewed-by, thanks.
Thanks Arnaldo. This does mean that the arm64 build will fail until
"[PATCH v2 1/3] perf vendor events: Syntax corrections in Neoverse N1 json" is
applied. I think there is also an arm64 build issue with "[PATCH 02/21] perf
pmu: Add const to pmu_events_map." which Andrew Kilroy has replied to.

James


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