Date: Thu, 23 Oct 2014 15:35:47 +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: r273549 - head/sys/kern Message-ID: <201410231535.s9NFZlbn002656@svn.freebsd.org>
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Author: mjg Date: Thu Oct 23 15:35:47 2014 New Revision: 273549 URL: https://svnweb.freebsd.org/changeset/base/273549 Log: Avoid taking the lock in selfdfree when not needed. Modified: head/sys/kern/sys_generic.c Modified: head/sys/kern/sys_generic.c ============================================================================== --- head/sys/kern/sys_generic.c Thu Oct 23 15:16:40 2014 (r273548) +++ head/sys/kern/sys_generic.c Thu Oct 23 15:35:47 2014 (r273549) @@ -1600,10 +1600,11 @@ static void selfdfree(struct seltd *stp, struct selfd *sfp) { STAILQ_REMOVE(&stp->st_selq, sfp, selfd, sf_link); - mtx_lock(sfp->sf_mtx); - if (sfp->sf_si) + if (sfp->sf_si != NULL) { + mtx_lock(sfp->sf_mtx); TAILQ_REMOVE(&sfp->sf_si->si_tdlist, sfp, sf_threads); - mtx_unlock(sfp->sf_mtx); + mtx_unlock(sfp->sf_mtx); + } uma_zfree(selfd_zone, sfp); }
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