A recent diff from dlg@ made me looks at where the global variable
``ticks'' is used and how.  I find this *really* difficult because
there's a lot of noise.  In order to reduce the noise and help for
this audit here's a first diff. It renames all the local variables
from ``ticks'' to ``nticks'' where this was not already the case.

This should make grepping easier, ok?

Index: arch/alpha/alpha/lock_machdep.c
===================================================================
RCS file: /cvs/src/sys/arch/alpha/alpha/lock_machdep.c,v
retrieving revision 1.3
diff -u -p -r1.3 lock_machdep.c
--- arch/alpha/alpha/lock_machdep.c     11 Feb 2015 03:56:00 -0000      1.3
+++ arch/alpha/alpha/lock_machdep.c     17 Mar 2016 18:46:17 -0000
@@ -71,14 +71,14 @@ __mp_lock_spin(struct __mp_lock *mpl)
        while (mpl->mpl_count != 0)
                SPINLOCK_SPIN_HOOK;
 #else
-       int ticks = __mp_lock_spinout;
-       if (!CPU_IS_PRIMARY(curcpu()))                          /* XXX */
-               ticks += ticks;                                 /* XXX */
+       int nticks = __mp_lock_spinout;
+       if (!CPU_IS_PRIMARY(curcpu()))
+               nticks += nticks;
 
-       while (mpl->mpl_count != 0 && --ticks > 0)
+       while (mpl->mpl_count != 0 && --nticks > 0)
                SPINLOCK_SPIN_HOOK;
 
-       if (ticks == 0) {
+       if (nticks == 0) {
                db_printf("__mp_lock(%p): lock spun out", mpl);
                Debugger();
        }
Index: arch/amd64/amd64/lock_machdep.c
===================================================================
RCS file: /cvs/src/sys/arch/amd64/amd64/lock_machdep.c,v
retrieving revision 1.9
diff -u -p -r1.9 lock_machdep.c
--- arch/amd64/amd64/lock_machdep.c     25 Jun 2015 00:58:49 -0000      1.9
+++ arch/amd64/amd64/lock_machdep.c     17 Mar 2016 18:46:21 -0000
@@ -50,12 +50,12 @@ __mp_lock_spin(struct __mp_lock *mpl, u_
        while (mpl->mpl_ticket != me)
                SPINLOCK_SPIN_HOOK;
 #else
-       int ticks = __mp_lock_spinout;
+       int nticks = __mp_lock_spinout;
 
-       while (mpl->mpl_ticket != me && --ticks > 0)
+       while (mpl->mpl_ticket != me && --nticks > 0)
                SPINLOCK_SPIN_HOOK;
 
-       if (ticks == 0) {
+       if (nticks == 0) {
                db_printf("__mp_lock(%p): lock spun out", mpl);
                Debugger();
        }
Index: arch/hppa/hppa/lock_machdep.c
===================================================================
RCS file: /cvs/src/sys/arch/hppa/hppa/lock_machdep.c,v
retrieving revision 1.8
diff -u -p -r1.8 lock_machdep.c
--- arch/hppa/hppa/lock_machdep.c       11 Feb 2015 01:58:57 -0000      1.8
+++ arch/hppa/hppa/lock_machdep.c       17 Mar 2016 18:46:27 -0000
@@ -81,12 +81,12 @@ __mp_lock_spin(struct __mp_lock *mpl)
        while (mpl->mpl_count != 0)
                SPINLOCK_SPIN_HOOK;
 #else
-       int ticks = __mp_lock_spinout;
+       int nticks = __mp_lock_spinout;
 
-       while (mpl->mpl_count != 0 && --ticks > 0)
+       while (mpl->mpl_count != 0 && --nticks > 0)
                SPINLOCK_SPIN_HOOK;
 
-       if (ticks == 0) {
+       if (nticks == 0) {
                db_printf("__mp_lock(%p): lock spun out", mpl);
                Debugger();
        }
Index: arch/i386/i386/lock_machdep.c
===================================================================
RCS file: /cvs/src/sys/arch/i386/i386/lock_machdep.c,v
retrieving revision 1.18
diff -u -p -r1.18 lock_machdep.c
--- arch/i386/i386/lock_machdep.c       30 May 2015 08:41:30 -0000      1.18
+++ arch/i386/i386/lock_machdep.c       17 Mar 2016 18:46:31 -0000
@@ -80,12 +80,12 @@ __mp_lock_spin(struct __mp_lock *mpl, u_
        while (mpl->mpl_ticket != me)
                SPINLOCK_SPIN_HOOK;
 #else
-       int ticks = __mp_lock_spinout;
+       int nticks = __mp_lock_spinout;
 
-       while (mpl->mpl_ticket != me && --ticks > 0)
+       while (mpl->mpl_ticket != me && --nticks > 0)
                SPINLOCK_SPIN_HOOK;
 
-       if (ticks == 0) {
+       if (nticks == 0) {
                db_printf("__mp_lock(%p): lock spun out", mpl);
                Debugger();
        }
Index: arch/m88k/m88k/mplock.c
===================================================================
RCS file: /cvs/src/sys/arch/m88k/m88k/mplock.c,v
retrieving revision 1.3
diff -u -p -r1.3 mplock.c
--- arch/m88k/m88k/mplock.c     11 Feb 2015 07:05:39 -0000      1.3
+++ arch/m88k/m88k/mplock.c     17 Mar 2016 18:46:34 -0000
@@ -50,12 +50,12 @@ __mp_lock_spin(struct __mp_lock *mpl)
        while (mpl->mpl_count != 0)
                SPINLOCK_SPIN_HOOK;
 #else
-       int ticks = __mp_lock_spinout;
+       int nticks = __mp_lock_spinout;
 
-       while (mpl->mpl_count != 0 && ticks-- > 0)
+       while (mpl->mpl_count != 0 && nticks-- > 0)
                SPINLOCK_SPIN_HOOK;
 
-       if (ticks == 0) {
+       if (nticks == 0) {
                db_printf("__mp_lock(0x%x): lock spun out", mpl);
                Debugger();
        }
Index: arch/mips64/mips64/mutex.c
===================================================================
RCS file: /cvs/src/sys/arch/mips64/mips64/mutex.c,v
retrieving revision 1.3
diff -u -p -r1.3 mutex.c
--- arch/mips64/mips64/mutex.c  26 Sep 2015 04:03:25 -0000      1.3
+++ arch/mips64/mips64/mutex.c  17 Mar 2016 18:46:39 -0000
@@ -57,15 +57,15 @@ void
 mtx_enter(struct mutex *mtx)
 {
 #ifdef MP_LOCKDEBUG
-       int ticks = __mp_lock_spinout;
+       int nticks = __mp_lock_spinout;
 #endif
 
        while (mtx_enter_try(mtx) == 0) {
 #ifdef MP_LOCKDEBUG
-               if (--ticks == 0) {
+               if (--nticks == 0) {
                        db_printf("%s(%p): lock spun out", __func__, mtx);
                        Debugger();
-                       ticks = __mp_lock_spinout;
+                       nticks = __mp_lock_spinout;
                }
 #endif
        }
Index: arch/mips64/mips64/lock_machdep.c
===================================================================
RCS file: /cvs/src/sys/arch/mips64/mips64/lock_machdep.c,v
retrieving revision 1.1
diff -u -p -r1.1 lock_machdep.c
--- arch/mips64/mips64/lock_machdep.c   9 Sep 2015 15:48:52 -0000       1.1
+++ arch/mips64/mips64/lock_machdep.c   17 Mar 2016 18:46:42 -0000
@@ -51,12 +51,12 @@ __mp_lock_spin(struct __mp_lock *mpl)
        while (mpl->mpl_count != 0)
                SPINLOCK_SPIN_HOOK;
 #else
-       int ticks = __mp_lock_spinout;
+       int nticks = __mp_lock_spinout;
 
-       while (mpl->mpl_count != 0 && --ticks > 0)
+       while (mpl->mpl_count != 0 && --nticks > 0)
                SPINLOCK_SPIN_HOOK;
 
-       if (ticks == 0) {
+       if (nticks == 0) {
                db_printf("__mp_lock(%p): lock spun out", mpl);
                Debugger();
        }
Index: arch/powerpc/powerpc/mutex.c
===================================================================
RCS file: /cvs/src/sys/arch/powerpc/powerpc/mutex.c,v
retrieving revision 1.2
diff -u -p -r1.2 mutex.c
--- arch/powerpc/powerpc/mutex.c        21 Sep 2015 06:21:49 -0000      1.2
+++ arch/powerpc/powerpc/mutex.c        17 Mar 2016 18:46:45 -0000
@@ -57,14 +57,14 @@ void
 mtx_enter(struct mutex *mtx)
 {
 #if defined(MP_LOCKDEBUG)
-       int ticks = __mp_lock_spinout;
+       int nticks = __mp_lock_spinout;
 #endif
 
        while (mtx_enter_try(mtx) == 0) {
                SPINLOCK_SPIN_HOOK;
 
 #if defined(MP_LOCKDEBUG)
-               if (--ticks == 0) {
+               if (--nticks == 0) {
                        db_printf("%s: %p lock spun out", __func__, mtx);
                        Debugger();
                }
Index: arch/powerpc/powerpc/lock_machdep.c
===================================================================
RCS file: /cvs/src/sys/arch/powerpc/powerpc/lock_machdep.c,v
retrieving revision 1.3
diff -u -p -r1.3 lock_machdep.c
--- arch/powerpc/powerpc/lock_machdep.c 14 Aug 2015 06:14:19 -0000      1.3
+++ arch/powerpc/powerpc/lock_machdep.c 17 Mar 2016 18:46:47 -0000
@@ -49,12 +49,12 @@ __mp_lock_spin(struct __mp_lock *mpl)
        while (mpl->mpl_count != 0)
                SPINLOCK_SPIN_HOOK;
 #else
-       int ticks = __mp_lock_spinout;
+       int nticks = __mp_lock_spinout;
 
-       while (mpl->mpl_count != 0 && --ticks > 0)
+       while (mpl->mpl_count != 0 && --nticks > 0)
                SPINLOCK_SPIN_HOOK;
 
-       if (ticks == 0) {
+       if (nticks == 0) {
                db_printf("__mp_lock(%p): lock spun out", mpl);
                Debugger();
        }
Index: arch/sparc64/dev/beep.c
===================================================================
RCS file: /cvs/src/sys/arch/sparc64/dev/beep.c,v
retrieving revision 1.6
diff -u -p -r1.6 beep.c
--- arch/sparc64/dev/beep.c     8 Jan 2016 15:54:13 -0000       1.6
+++ arch/sparc64/dev/beep.c     17 Mar 2016 18:42:36 -0000
@@ -219,11 +219,11 @@ void
 beep_bell(void *vsc, u_int pitch, u_int period, u_int volume, int poll)
 {
        struct beep_softc *sc = vsc;
-       int s, ticks;
+       int s, nticks;
 
-       ticks = (period * hz) / 1000;
-       if (ticks <= 0)
-               ticks = 1;
+       nticks = (period * hz) / 1000;
+       if (nticks <= 0)
+               nticks = 1;
 
        s = spltty();
        if (sc->sc_bellactive) {
@@ -240,7 +240,7 @@ beep_bell(void *vsc, u_int pitch, u_int 
                sc->sc_belltimeout = 1;
                bus_space_write_1(sc->sc_iot, sc->sc_ioh, BEEP_CTRL,
                    BEEP_CTRL_ON);
-               timeout_add(&sc->sc_to, ticks);
+               timeout_add(&sc->sc_to, nticks);
        }
        splx(s);
 }
Index: arch/sparc64/dev/beeper.c
===================================================================
RCS file: /cvs/src/sys/arch/sparc64/dev/beeper.c,v
retrieving revision 1.10
diff -u -p -r1.10 beeper.c
--- arch/sparc64/dev/beeper.c   20 Dec 2005 16:50:33 -0000      1.10
+++ arch/sparc64/dev/beeper.c   17 Mar 2016 18:42:42 -0000
@@ -148,11 +148,11 @@ beeper_bell(vsc, pitch, period, volume, 
        int poll;
 {
        struct beeper_softc *sc = vsc;
-       int s, ticks;
+       int s, nticks;
 
-       ticks = (period * hz) / 1000;
-       if (ticks <= 0)
-               ticks = 1;
+       nticks = (period * hz) / 1000;
+       if (nticks <= 0)
+               nticks = 1;
 
        s = spltty();
        if (sc->sc_bellactive) {
@@ -168,7 +168,7 @@ beeper_bell(vsc, pitch, period, volume, 
                sc->sc_bellactive = 1;
                sc->sc_belltimeout = 1;
                bus_space_write_4(sc->sc_iot, sc->sc_ioh, BEEP_REG, 1);
-               timeout_add(&sc->sc_to, ticks);
+               timeout_add(&sc->sc_to, nticks);
        }
        splx(s);
 }
Index: arch/sparc64/sparc64/lock_machdep.c
===================================================================
RCS file: /cvs/src/sys/arch/sparc64/sparc64/lock_machdep.c,v
retrieving revision 1.10
diff -u -p -r1.10 lock_machdep.c
--- arch/sparc64/sparc64/lock_machdep.c 25 Jun 2015 00:53:19 -0000      1.10
+++ arch/sparc64/sparc64/lock_machdep.c 17 Mar 2016 18:46:56 -0000
@@ -93,12 +93,12 @@ __mp_lock_spin(struct __mp_lock *mpl, u_
        while (mpl->mpl_ticket != me)
                SPINLOCK_SPIN_HOOK;
 #else
-       int ticks = __mp_lock_spinout;
+       int nticks = __mp_lock_spinout;
 
-       while (mpl->mpl_ticket != me && --ticks > 0)
+       while (mpl->mpl_ticket != me && --nticks > 0)
                SPINLOCK_SPIN_HOOK;
 
-       if (ticks == 0) {
+       if (nticks == 0) {
                db_printf("__mp_lock(%p): lock spun out", mpl);
                Debugger();
        }
Index: dev/ic/aic79xx_openbsd.c
===================================================================
RCS file: /cvs/src/sys/dev/ic/aic79xx_openbsd.c,v
retrieving revision 1.43
diff -u -p -r1.43 aic79xx_openbsd.c
--- dev/ic/aic79xx_openbsd.c    17 Jul 2015 21:42:49 -0000      1.43
+++ dev/ic/aic79xx_openbsd.c    17 Mar 2016 18:43:00 -0000
@@ -692,24 +692,24 @@ void
 aic_timer_reset(aic_timer_t *timer, u_int msec, ahd_callback_t *func,
     void *arg)
 {
-       uint64_t ticks;
+       uint64_t nticks;
 
-       ticks = msec;
-       ticks *= hz;
-       ticks /= 1000;
-       callout_reset(timer, ticks, func, arg);
+       nticks = msec;
+       nticks *= hz;
+       nticks /= 1000;
+       callout_reset(timer, nticks, func, arg);
 }
 
 void
 aic_scb_timer_reset(struct scb *scb, u_int msec)
 {
-       uint64_t ticks;
+       uint64_t nticks;
 
-       ticks = msec;
-       ticks *= hz;
-       ticks /= 1000;
+       nticks = msec;
+       nticks *= hz;
+       nticks /= 1000;
        if (!(scb->xs->xs_control & XS_CTL_POLL))
-               callout_reset(&scb->xs->xs_callout, ticks, ahd_timeout, scb);
+               callout_reset(&scb->xs->xs_callout, nticks, ahd_timeout, scb);
 }
 
 void
Index: dev/ic/re.c
===================================================================
RCS file: /cvs/src/sys/dev/ic/re.c,v
retrieving revision 1.189
diff -u -p -r1.189 re.c
--- dev/ic/re.c 4 Jan 2016 05:41:22 -0000       1.189
+++ dev/ic/re.c 17 Mar 2016 18:43:17 -0000
@@ -2262,15 +2262,15 @@ re_setup_sim_im(struct rl_softc *sc)
        if (sc->sc_hwrev == RL_HWREV_8139CPLUS)
                CSR_WRITE_4(sc, RL_TIMERINT, 0x400); /* XXX */
        else {
-               u_int32_t ticks;
+               u_int32_t nticks;
 
                /*
                 * Datasheet says tick decreases at bus speed,
                 * but it seems the clock runs a little bit
                 * faster, so we do some compensation here.
                 */
-               ticks = (sc->rl_sim_time * sc->rl_bus_speed * 8) / 5;
-               CSR_WRITE_4(sc, RL_TIMERINT_8169, ticks);
+               nticks = (sc->rl_sim_time * sc->rl_bus_speed * 8) / 5;
+               CSR_WRITE_4(sc, RL_TIMERINT_8169, nticks);
        }
        CSR_WRITE_4(sc, RL_TIMERCNT, 1); /* reload */
        sc->rl_timerintr = 1;
Index: dev/isa/spkr.c
===================================================================
RCS file: /cvs/src/sys/dev/isa/spkr.c,v
retrieving revision 1.20
diff -u -p -r1.20 spkr.c
--- dev/isa/spkr.c      25 Nov 2015 04:49:10 -0000      1.20
+++ dev/isa/spkr.c      17 Mar 2016 18:52:04 -0000
@@ -83,16 +83,16 @@ static void playstring(char *, size_t);
 
 /* emit tone of frequency hz for given number of ticks */
 static void
-tone(hz, ticks)
-       u_int hz, ticks;
+tone(hz, nticks)
+       u_int hz, nticks;
 {
-       pcppi_bell(ppicookie, hz, ticks, PCPPI_BELL_SLEEP);
+       pcppi_bell(ppicookie, hz, nticks, PCPPI_BELL_SLEEP);
 }
 
 /* rest for given number of ticks */
 static void
-rest(ticks)
-       int ticks;
+rest(nticks)
+       int nticks;
 {
        /*
         * Set timeout to endrest function, then give up the timeslice.
@@ -100,10 +100,10 @@ rest(ticks)
         * waited out.
         */
 #ifdef SPKRDEBUG
-       printf("rest: %d\n", ticks);
+       printf("rest: %d\n", nticks);
 #endif /* SPKRDEBUG */
-       if (ticks > 0)
-               tsleep(rest, SPKRPRI | PCATCH, "rest", ticks);
+       if (nticks > 0)
+               tsleep(rest, SPKRPRI | PCATCH, "rest", nticks);
 }
 
 /**************** PLAY STRING INTERPRETER BEGINS HERE **********************
Index: dev/pci/ichwdt.c
===================================================================
RCS file: /cvs/src/sys/dev/pci/ichwdt.c,v
retrieving revision 1.5
diff -u -p -r1.5 ichwdt.c
--- dev/pci/ichwdt.c    10 Dec 2014 12:27:57 -0000      1.5
+++ dev/pci/ichwdt.c    17 Mar 2016 18:44:29 -0000
@@ -158,7 +158,7 @@ int
 ichwdt_cb(void *arg, int period)
 {
        struct ichwdt_softc *sc = arg;
-       int ticks;
+       int nticks;
 
        if (period == 0) {
                if (sc->sc_period != 0) {
@@ -178,11 +178,11 @@ ichwdt_cb(void *arg, int period)
 
                if (sc->sc_period != period) {
                        /* Set new timeout */
-                       ticks = (period * 33000000) / sc->sc_divisor;
-                       ichwdt_unlock_write(sc, ICH_WDT_PRE1, ticks);
+                       nticks = (period * 33000000) / sc->sc_divisor;
+                       ichwdt_unlock_write(sc, ICH_WDT_PRE1, nticks);
                        ichwdt_unlock_write(sc, ICH_WDT_PRE2, 2);
-                       DPRINTF(("%s: timeout %ds (%d ticks)\n",
-                           sc->sc_dev.dv_xname, period, ticks));
+                       DPRINTF(("%s: timeout %ds (%d nticks)\n",
+                           sc->sc_dev.dv_xname, period, nticks));
                }
                if (sc->sc_period == 0) {
                        /* Enable watchdog */
Index: dev/sbus/stp4020.c
===================================================================
RCS file: /cvs/src/sys/dev/sbus/stp4020.c,v
retrieving revision 1.18
diff -u -p -r1.18 stp4020.c
--- dev/sbus/stp4020.c  19 Nov 2013 01:23:51 -0000      1.18
+++ dev/sbus/stp4020.c  17 Mar 2016 18:44:36 -0000
@@ -898,21 +898,21 @@ void
 stp4020_delay(ms)
        unsigned int ms;
 {
-       unsigned int ticks;
+       unsigned int nticks;
 
-       /* Convert to ticks */
-       ticks = (ms * hz) / 1000000;
+       /* Convert to nticks */
+       nticks = (ms * hz) / 1000000;
 
-       if (cold || ticks == 0) {
+       if (cold || nticks == 0) {
                delay(ms);
                return;
        }
 
 #ifdef DEBUG
-       if (ticks > 60 * hz)
-               panic("stp4020: preposterous delay: %u", ticks);
+       if (nticks > 60 * hz)
+               panic("stp4020: preposterous delay: %u", nticks);
 #endif
-       tsleep(&ticks, 0, "stp4020_delay", ticks);
+       tsleep(&nticks, 0, "stp4020_delay", ticks);
 }
 
 #ifdef STP4020_DEBUG
Index: dev/usb/uthum.c
===================================================================
RCS file: /cvs/src/sys/dev/usb/uthum.c,v
retrieving revision 1.30
diff -u -p -r1.30 uthum.c
--- dev/usb/uthum.c     9 Jan 2016 04:14:42 -0000       1.30
+++ dev/usb/uthum.c     17 Mar 2016 18:45:17 -0000
@@ -742,7 +742,7 @@ uthum_ds75_temp(uint8_t msb, uint8_t lsb
 int
 uthum_sht1x_temp(uint8_t msb, uint8_t lsb)
 {
-       int ticks;
+       int nticks;
 
        /* sensor device VDD-bias value table
         * ----------------------------------------------
@@ -754,20 +754,20 @@ uthum_sht1x_temp(uint8_t msb, uint8_t ls
         * bias -3970 will be best for that device.
         */
 
-       ticks = (msb * 256 + lsb) & 0x3fff;
-       return (ticks - 3970);
+       nticks = (msb * 256 + lsb) & 0x3fff;
+       return (nticks - 3970);
 }
 
 /* return %RH * 1000 */
 int
 uthum_sht1x_rh(uint8_t msb, uint8_t lsb, int temp)
 {
-       int ticks, rh_l;
+       int nticks, rh_l;
 
-       ticks = (msb * 256 + lsb) & 0x0fff;
-       rh_l = (-40000 + 405 * ticks) - ((7 * ticks * ticks) / 250);
+       nticks = (msb * 256 + lsb) & 0x0fff;
+       rh_l = (-40000 + 405 * nticks) - ((7 * nticks * nticks) / 250);
 
-       return ((temp - 2500) * (1 + (ticks >> 7)) + rh_l) / 10;
+       return ((temp - 2500) * (1 + (nticks >> 7)) + rh_l) / 10;
 }
 
 /* return muK */

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