linux-kernel - Re: [PATCH v5 07/10] perf sched stats: Add support for live mode

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Message-ID: <aXJDa-peSknTnk9_@x1>
Date: Thu, 22 Jan 2026 12:34:03 -0300
From: Arnaldo Carvalho de Melo <acme@...nel.org>
To: Swapnil Sapkal <swapnil.sapkal@....com>
Cc: peterz@...radead.org, mingo@...hat.com, namhyung@...nel.org,
	irogers@...gle.com, james.clark@....com, ravi.bangoria@....com,
	yu.c.chen@...el.com, mark.rutland@....com,
	alexander.shishkin@...ux.intel.com, jolsa@...nel.org,
	rostedt@...dmis.org, vincent.guittot@...aro.org,
	adrian.hunter@...el.com, kan.liang@...ux.intel.com,
	gautham.shenoy@....com, kprateek.nayak@....com,
	juri.lelli@...hat.com, yangjihong@...edance.com, void@...ifault.com,
	tj@...nel.org, sshegde@...ux.ibm.com, ctshao@...gle.com,
	quic_zhonhan@...cinc.com, thomas.falcon@...el.com,
	blakejones@...gle.com, ashelat@...hat.com, leo.yan@....com,
	dvyukov@...gle.com, ak@...ux.intel.com, yujie.liu@...el.com,
	graham.woodward@....com, ben.gainey@....com, vineethr@...ux.ibm.com,
	tim.c.chen@...ux.intel.com, linux@...blig.org,
	santosh.shukla@....com, sandipan.das@....com,
	linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org,
	James Clark <james.clark@...aro.org>
Subject: Re: [PATCH v5 07/10] perf sched stats: Add support for live mode

On Wed, Jan 21, 2026 at 10:32:54PM -0300, Arnaldo Carvalho de Melo wrote:
> On Wed, Jan 21, 2026 at 09:54:16PM -0300, Arnaldo Carvalho de Melo wrote:
> > So continuing to test build up to:
>  
> > ⬢ [acme@...lbx perf-tools-next]$ git log --oneline -5
> > 139b45df27c05531 (HEAD -> perf-tools-next) perf sched stats: Add schedstat v17 support
> > e092c5d4541da7f0 perf sched stats: Add schedstat v16 support
> > e659d5e11000b7ff perf sched stats: Add record and rawdump support
> > 900884770020691c perf header: Support CPU DOMAIN relation info
> > a02829a0e6c65b12 tools/lib: Add list_is_first()
> > ⬢ [acme@...lbx perf-tools-next]$
 
> Just the first two patches build on 32-bit arches, I'll look at it
> tomorrow after some coffee, for now at least the first two are merged,
> to make some progress.

Its simple stuff like:

acme@...e:~/git/perf-tools-next$ git diff
diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c
index f1051224124437c6..5a98c16e10923d57 100644
--- a/tools/perf/util/event.c
+++ b/tools/perf/util/event.c
@@ -599,7 +599,7 @@ size_t perf_event__fprintf_schedstat_domain(union perf_event *event, FILE *fp)
        size_t size = fprintf(fp, "\ndomain%u ", ds->domain);

 #define DOMAIN_FIELD(_type, _name, _desc, _format, _is_jiffies, _ver)          \
-       size += fprintf(fp, "%" PRIu64 " ", (unsigned long)ds->_ver._name)
+       size += fprintf(fp, "%" PRIu64 " ", (uint64_t)ds->_ver._name)

        if (version == 15) {
 #include <perf/schedstat-v15.h>
acme@...e:~/git/perf-tools-next$

I'm fixing it here,

- Arnaldo