[src/trunk]: src/external/cddl/osnet/dev/lockstat - remove device stuff

[christos <christos%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/b766c093dc0c
branches:  trunk
changeset: 806801:b766c093dc0c
user:      christos <christos%NetBSD.org@localhost>
date:      Mon Mar 09 00:53:39 2015 +0000

description:
- remove device stuff
- compress ops
- terminate array of probes

diffstat:

 external/cddl/osnet/dev/lockstat/lockstat.c |  62 +++++-----------------------
 1 files changed, 12 insertions(+), 50 deletions(-)

diffs (138 lines):

diff -r 9363a4f0b422 -r b766c093dc0c external/cddl/osnet/dev/lockstat/lockstat.c
--- a/external/cddl/osnet/dev/lockstat/lockstat.c       Mon Mar 09 00:40:35 2015 +0000
+++ b/external/cddl/osnet/dev/lockstat/lockstat.c       Mon Mar 09 00:53:39 2015 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: lockstat.c,v 1.5 2015/03/08 23:56:59 riastradh Exp $   */
+/*     $NetBSD: lockstat.c,v 1.6 2015/03/09 00:53:39 christos Exp $    */
 
 /*
  * CDDL HEADER START
@@ -26,7 +26,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: lockstat.c,v 1.5 2015/03/08 23:56:59 riastradh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: lockstat.c,v 1.6 2015/03/09 00:53:39 christos Exp $");
 
 #include <sys/types.h>
 #include <sys/param.h>
@@ -36,6 +36,7 @@
 #include <sys/mutex.h>
 #include <sys/systm.h>
 #include <sys/xcall.h>
+#include <sys/atomic.h>
 
 #include <dev/lockstat.h>
 
@@ -57,6 +58,7 @@
        { "rwlock", "spin",             LB_RWLOCK       | LB_SPIN,      0 },
        { "kernel", "spin",             LB_KERNEL_LOCK  | LB_SPIN,      0 },
        { "lwp", "spin",                LB_NOPREEMPT    | LB_SPIN,      0 },
+       { NULL, NULL,                   0,                              0 },
 };
 
 static dtrace_provider_id_t lockstat_id;
@@ -67,9 +69,10 @@
 {
        lockstat_probe_t *probe = parg;
 
-       ASSERT(!lockstat_probemap[probe->lsp_probe]);
+       ASSERT(!lockstat_probemap[LS_COMPRESS(probe->lsp_probe)]);
 
-       lockstat_probemap[probe->lsp_probe] = id;
+printf("%s: %x %jd\n", __func__, LS_COMPRESS(probe->lsp_probe), (intmax_t)id);
+       lockstat_probemap[LS_COMPRESS(probe->lsp_probe)] = id;
 
        return 0;
 }
@@ -80,33 +83,11 @@
 {
        lockstat_probe_t *probe = parg;
 
-       ASSERT(lockstat_probemap[probe->lsp_probe]);
-
-       lockstat_probemap[probe->lsp_probe] = 0;
-}
-
-static int
-lockstat_open(dev_t dev __unused, int flags __unused, int mode __unused,
-    struct lwp *l __unused)
-{
-
-       return 0;
-}
+       ASSERT(lockstat_probemap[LS_COMPRESS(probe->lsp_probe)]);
 
-static const struct cdevsw lockstat_cdevsw = {
-       .d_open = lockstat_open,
-       .d_close = noclose,
-       .d_read = noread,
-       .d_write = nowrite,
-       .d_ioctl = noioctl,
-       .d_stop = nostop,
-       .d_tty = notty,
-       .d_poll = nopoll,
-       .d_mmap = nommap,
-       .d_kqfilter = nokqfilter,
-       .d_discard = nodiscard,
-       .d_flag = D_OTHER,
-};
+printf("%s: %x %jd\n", __func__, LS_COMPRESS(probe->lsp_probe), (intmax_t)id);
+       lockstat_probemap[LS_COMPRESS(probe->lsp_probe)] = 0;
+}
 
 /*ARGSUSED*/
 static void
@@ -188,7 +169,6 @@
 static int
 lockstat_init(void)
 {
-       int bmaj = -1, cmaj = -1;
        int error;
        bool ok;
 
@@ -200,13 +180,6 @@
                goto fail0;
        }
 
-       /* Create a character device.  */
-       error = devsw_attach("lockstat", NULL, &bmaj, &lockstat_cdevsw, &cmaj);
-       if (error) {
-               printf("dtrace_lockstat: failed to attach devsw: %d\n", error);
-               goto fail1;
-       }
-
        /* Everything is in place.  Register a dtrace provider.  */
        ASSERT(lockstat_id == 0);
        error = dtrace_register("lockstat", &lockstat_attr, DTRACE_PRIV_USER,
@@ -214,14 +187,11 @@
        if (error) {
                printf("dtrace_lockstat: failed to register dtrace provider"
                    ": %d\n", error);
-               goto fail2;
+               goto fail1;
        }
-       ASSERT(lockstat_id != 0);
-
        /* Success!  */
        return 0;
 
-fail2: devsw_detach(NULL, &lockstat_cdevsw);
 fail1: ok = lockstat_cas_probe(dtrace_probe, lockstat_probe_stub);
        ASSERT(ok);
 fail0: ASSERT(error);
@@ -249,14 +219,6 @@
                lockstat_id = 0;
        }
 
-       /* Detach the device.  */
-       error = devsw_detach(NULL, &lockstat_cdevsw);
-       if (error) {
-               printf("dtrace_lockstat: failed to detach device: %d\n",
-                   error);
-               return error;
-       }
-
        /* Unhook the probe.  */
        ok = lockstat_cas_probe(dtrace_probe, lockstat_probe_stub);
        ASSERT(ok);