svn commit: r367164 - head/sys/kern

[Mateusz Guzik]

Author: mjg
Date: Fri Oct 30 14:02:56 2020
New Revision: 367164
URL: https://svnweb.freebsd.org/changeset/base/367164

Log:
  vfs: change vnode poll to just a malloc type
  
  The size is 120, close fit for 128 and rarely used. The infrequent use
  avoidably populates per-CPU caches and ends up with more memory.

Modified:
  head/sys/kern/vfs_subr.c

Modified: head/sys/kern/vfs_subr.c
==============================================================================
--- head/sys/kern/vfs_subr.c    Fri Oct 30 13:32:58 2020        (r367163)
+++ head/sys/kern/vfs_subr.c    Fri Oct 30 14:02:56 2020        (r367164)
@@ -228,7 +228,7 @@ static smr_t buf_trie_smr;
 
 /* Zone for allocation of new vnodes - used exclusively by getnewvnode() */
 static uma_zone_t vnode_zone;
-static uma_zone_t vnodepoll_zone;
+MALLOC_DEFINE(M_VNODEPOLL, "VN POLL", "vnode poll");
 
 __read_frequently smr_t vfs_smr;
 
@@ -660,8 +660,6 @@ vntblinit(void *dummy __unused)
        vnode_zone = uma_zcreate("VNODE", sizeof (struct vnode), NULL, NULL,
            vnode_init, vnode_fini, UMA_ALIGN_PTR, 0);
        uma_zone_set_smr(vnode_zone, vfs_smr);
-       vnodepoll_zone = uma_zcreate("VNODEPOLL", sizeof (struct vpollinfo),
-           NULL, NULL, NULL, NULL, UMA_ALIGN_PTR, 0);
        /*
         * Preallocate enough nodes to support one-per buf so that
         * we can not fail an insert.  reassignbuf() callers can not
@@ -4788,7 +4786,7 @@ destroy_vpollinfo_free(struct vpollinfo *vi)
 
        knlist_destroy(&vi->vpi_selinfo.si_note);
        mtx_destroy(&vi->vpi_lock);
-       uma_zfree(vnodepoll_zone, vi);
+       free(vi, M_VNODEPOLL);
 }
 
 static void
@@ -4810,7 +4808,7 @@ v_addpollinfo(struct vnode *vp)
 
        if (vp->v_pollinfo != NULL)
                return;
-       vi = uma_zalloc(vnodepoll_zone, M_WAITOK | M_ZERO);
+       vi = malloc(sizeof(*vi), M_VNODEPOLL, M_WAITOK | M_ZERO);
        mtx_init(&vi->vpi_lock, "vnode pollinfo", NULL, MTX_DEF);
        knlist_init(&vi->vpi_selinfo.si_note, vp, vfs_knllock,
            vfs_knlunlock, vfs_knl_assert_locked, vfs_knl_assert_unlocked);
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