Date: Thu, 29 Apr 2021 13:39:18 GMT From: Mitchell Horne <mhorne@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org Subject: git: 112e30301846 - stable/13 - pmcstat: set initial counter value to zero Message-ID: <202104291339.13TDdIAj070797@gitrepo.freebsd.org>
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The branch stable/13 has been updated by mhorne: URL: https://cgit.FreeBSD.org/src/commit/?id=112e30301846d8fede4679a3f95e18820d721bbd commit 112e30301846d8fede4679a3f95e18820d721bbd Author: Mitchell Horne <mhorne@FreeBSD.org> AuthorDate: 2021-04-21 20:28:12 +0000 Commit: Mitchell Horne <mhorne@FreeBSD.org> CommitDate: 2021-04-29 13:19:20 +0000 pmcstat: set initial counter value to zero For an infrequent event, pmcstat may report (u_long)-1 for CPUs where the counter was never incremented. Just set this to zero, instead. ev->ev_count is passed as the 'count' argument to pmc_allocate(3), but this wasn't always the case. Reviewed by: gnn MFC after: 1 week Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D29887 (cherry picked from commit edcf9e59c356525632dd2546d72916aeca609a2b) --- usr.sbin/pmcstat/pmcstat.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/usr.sbin/pmcstat/pmcstat.c b/usr.sbin/pmcstat/pmcstat.c index 688a98843652..b7f6c5e0f63e 100644 --- a/usr.sbin/pmcstat/pmcstat.c +++ b/usr.sbin/pmcstat/pmcstat.c @@ -675,7 +675,7 @@ main(int argc, char **argv) if (option == 'S' || option == 'P') ev->ev_count = current_sampling_count ? current_sampling_count : pmc_pmu_sample_rate_get(ev->ev_spec); else - ev->ev_count = -1; + ev->ev_count = 0; if (option == 'S' || option == 's') ev->ev_cpu = CPU_FFS(&cpumask) - 1;
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