Date: Tue, 23 Oct 2018 13:54:54 +0000 (UTC) From: Edward Tomasz Napierala <trasz@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r339654 - head/contrib/jemalloc/src Message-ID: <201810231354.w9NDssQC042235@repo.freebsd.org>
next in thread | raw e-mail | index | archive | help
Author: trasz Date: Tue Oct 23 13:54:54 2018 New Revision: 339654 URL: https://svnweb.freebsd.org/changeset/base/339654 Log: Pick 676cdd66792ccb629a978837ea2a066d5db342cc from upstream: Disable runtime detection of lazy purging support on FreeBSD. The check doesn't seem to serve any purpose here, and this shaves off three syscalls on binary startup. Discussed by: jasone MFC after: 2 weeks Sponsored by: DARPA, AFRL Modified: head/contrib/jemalloc/src/pages.c Modified: head/contrib/jemalloc/src/pages.c ============================================================================== --- head/contrib/jemalloc/src/pages.c Tue Oct 23 13:49:53 2018 (r339653) +++ head/contrib/jemalloc/src/pages.c Tue Oct 23 13:54:54 2018 (r339654) @@ -588,6 +588,11 @@ pages_boot(void) { init_thp_state(); +#ifdef __FreeBSD__ + /* + * FreeBSD doesn't need the check; madvise(2) is known to work. + */ +#else /* Detect lazy purge runtime support. */ if (pages_can_purge_lazy) { bool committed = false; @@ -601,6 +606,7 @@ pages_boot(void) { } os_pages_unmap(madv_free_page, PAGE); } +#endif return false; }
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?201810231354.w9NDssQC042235>