Date: Wed, 15 Jul 2020 10:14:01 +0000 (UTC) From: Mateusz Guzik <mjg@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r363213 - head/sys/kern Message-ID: <202007151014.06FAE1oR001559@repo.freebsd.org>
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Author: mjg Date: Wed Jul 15 10:14:00 2020 New Revision: 363213 URL: https://svnweb.freebsd.org/changeset/base/363213 Log: fd: add obvious branch predictions to fdalloc Modified: head/sys/kern/kern_descrip.c Modified: head/sys/kern/kern_descrip.c ============================================================================== --- head/sys/kern/kern_descrip.c Wed Jul 15 10:13:23 2020 (r363212) +++ head/sys/kern/kern_descrip.c Wed Jul 15 10:14:00 2020 (r363213) @@ -1847,9 +1847,9 @@ fdalloc(struct thread *td, int minfd, int *result) * If none is found, grow the file table. */ fd = fd_first_free(fdp, minfd, fdp->fd_nfiles); - if (fd >= maxfd) + if (__predict_false(fd >= maxfd)) return (EMFILE); - if (fd >= fdp->fd_nfiles) { + if (__predict_false(fd >= fdp->fd_nfiles)) { allocfd = min(fd * 2, maxfd); #ifdef RACCT if (RACCT_ENABLED()) {
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