Date: Mon, 24 Aug 2009 04:58:42 +0000 (UTC) From: Alfred Perlstein <alfred@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r196489 - head/sys/dev/usb/input Message-ID: <200908240458.n7O4wgcE082289@svn.freebsd.org>
next in thread | raw e-mail | index | archive | help
Author: alfred Date: Mon Aug 24 04:58:42 2009 New Revision: 196489 URL: http://svn.freebsd.org/changeset/base/196489 Log: - patch for cordump slowdown. Avoid using DELAY(1000) when no keys are pressed. - Reported by: Various people - add sysctl to disable keyboard led control request - Reported by: Yoshihiro Ota - Save system CPU usage: Patch to stop keyboard timer when no keys are pressed. Submitted by: hps MFC after: 3 days Modified: head/sys/dev/usb/input/ukbd.c Modified: head/sys/dev/usb/input/ukbd.c ============================================================================== --- head/sys/dev/usb/input/ukbd.c Mon Aug 24 04:58:11 2009 (r196488) +++ head/sys/dev/usb/input/ukbd.c Mon Aug 24 04:58:42 2009 (r196489) @@ -96,10 +96,14 @@ __FBSDID("$FreeBSD$"); #if USB_DEBUG static int ukbd_debug = 0; +static int ukbd_no_leds = 0; SYSCTL_NODE(_hw_usb, OID_AUTO, ukbd, CTLFLAG_RW, 0, "USB ukbd"); SYSCTL_INT(_hw_usb_ukbd, OID_AUTO, debug, CTLFLAG_RW, &ukbd_debug, 0, "Debug level"); +SYSCTL_INT(_hw_usb_ukbd, OID_AUTO, no_leds, CTLFLAG_RW, + &ukbd_no_leds, 0, "Disables setting of keyboard leds"); + #endif #define UPROTO_BOOT_KEYBOARD 1 @@ -165,6 +169,7 @@ struct ukbd_softc { #define UKBD_FLAG_APPLE_EJECT 0x0040 #define UKBD_FLAG_APPLE_FN 0x0080 #define UKBD_FLAG_APPLE_SWAP 0x0100 +#define UKBD_FLAG_TIMER_RUNNING 0x0200 int32_t sc_mode; /* input mode (K_XLATE,K_RAW,K_CODE) */ int32_t sc_state; /* shift/lock key state */ @@ -279,6 +284,25 @@ static device_attach_t ukbd_attach; static device_detach_t ukbd_detach; static device_resume_t ukbd_resume; +static uint8_t +ukbd_any_key_pressed(struct ukbd_softc *sc) +{ + uint8_t i; + uint8_t j; + + for (j = i = 0; i < UKBD_NKEYCODE; i++) + j |= sc->sc_odata.keycode[i]; + + return (j ? 1 : 0); +} + +static void +ukbd_start_timer(struct ukbd_softc *sc) +{ + sc->sc_flags |= UKBD_FLAG_TIMER_RUNNING; + usb_callout_reset(&sc->sc_callout, hz / 40, &ukbd_timeout, sc); +} + static void ukbd_put_key(struct ukbd_softc *sc, uint32_t key) { @@ -308,11 +332,15 @@ ukbd_do_poll(struct ukbd_softc *sc, uint usbd_transfer_poll(sc->sc_xfer, UKBD_N_TRANSFER); - DELAY(1000); /* delay 1 ms */ + /* Delay-optimised support for repetition of keys */ - sc->sc_time_ms++; + if (ukbd_any_key_pressed(sc)) { + /* a key is pressed - need timekeeping */ + DELAY(1000); - /* support repetition of keys: */ + /* 1 millisecond has passed */ + sc->sc_time_ms += 1; + } ukbd_interrupt(sc); @@ -470,7 +498,11 @@ ukbd_timeout(void *arg) } ukbd_interrupt(sc); - usb_callout_reset(&sc->sc_callout, hz / 40, &ukbd_timeout, sc); + if (ukbd_any_key_pressed(sc)) { + ukbd_start_timer(sc); + } else { + sc->sc_flags &= ~UKBD_FLAG_TIMER_RUNNING; + } } static uint8_t @@ -582,6 +614,12 @@ ukbd_intr_callback(struct usb_xfer *xfer } ukbd_interrupt(sc); + + if (!(sc->sc_flags & UKBD_FLAG_TIMER_RUNNING)) { + if (ukbd_any_key_pressed(sc)) { + ukbd_start_timer(sc); + } + } } case USB_ST_SETUP: tr_setup: @@ -613,6 +651,11 @@ ukbd_set_leds_callback(struct usb_xfer * uint8_t buf[2]; struct ukbd_softc *sc = usbd_xfer_softc(xfer); +#if USB_DEBUG + if (ukbd_no_leds) + return; +#endif + switch (USB_GET_STATE(xfer)) { case USB_ST_TRANSFERRED: case USB_ST_SETUP: @@ -647,11 +690,11 @@ ukbd_set_leds_callback(struct usb_xfer * usbd_xfer_set_frames(xfer, 2); usbd_transfer_submit(xfer); } - return; + break; default: /* Error */ DPRINTFN(0, "error=%s\n", usbd_errstr(error)); - return; + break; } } @@ -745,8 +788,6 @@ ukbd_attach(device_t dev) uint16_t n; uint16_t hid_len; - mtx_assert(&Giant, MA_OWNED); - kbd_init_struct(kbd, UKBD_DRIVER_NAME, KB_OTHER, unit, 0, 0, 0); kbd->kb_data = (void *)sc; @@ -831,7 +872,7 @@ ukbd_attach(device_t dev) } /* ignore if SETIDLE fails, hence it is not crucial */ - err = usbd_req_set_idle(sc->sc_udev, &Giant, sc->sc_iface_index, 0, 0); + err = usbd_req_set_idle(sc->sc_udev, NULL, sc->sc_iface_index, 0, 0); ukbd_ioctl(kbd, KDSETLED, (caddr_t)&sc->sc_state); @@ -862,9 +903,6 @@ ukbd_attach(device_t dev) usbd_transfer_start(sc->sc_xfer[UKBD_INTR_DT]); - /* start the timer */ - - ukbd_timeout(sc); mtx_unlock(&Giant); return (0); /* success */ @@ -879,8 +917,6 @@ ukbd_detach(device_t dev) struct ukbd_softc *sc = device_get_softc(dev); int error; - mtx_assert(&Giant, MA_OWNED); - DPRINTF("\n"); if (sc->sc_flags & UKBD_FLAG_POLLING) { @@ -927,8 +963,6 @@ ukbd_resume(device_t dev) { struct ukbd_softc *sc = device_get_softc(dev); - mtx_assert(&Giant, MA_OWNED); - ukbd_clear_state(&sc->sc_kbd); return (0); @@ -945,7 +979,6 @@ ukbd_configure(int flags) static int ukbd__probe(int unit, void *arg, int flags) { - mtx_assert(&Giant, MA_OWNED); return (ENXIO); } @@ -953,7 +986,6 @@ ukbd__probe(int unit, void *arg, int fla static int ukbd_init(int unit, keyboard_t **kbdp, void *arg, int flags) { - mtx_assert(&Giant, MA_OWNED); return (ENXIO); } @@ -961,7 +993,6 @@ ukbd_init(int unit, keyboard_t **kbdp, v static int ukbd_test_if(keyboard_t *kbd) { - mtx_assert(&Giant, MA_OWNED); return (0); } @@ -969,7 +1000,6 @@ ukbd_test_if(keyboard_t *kbd) static int ukbd_term(keyboard_t *kbd) { - mtx_assert(&Giant, MA_OWNED); return (ENXIO); } @@ -977,7 +1007,6 @@ ukbd_term(keyboard_t *kbd) static int ukbd_intr(keyboard_t *kbd, void *arg) { - mtx_assert(&Giant, MA_OWNED); return (0); } @@ -985,7 +1014,6 @@ ukbd_intr(keyboard_t *kbd, void *arg) static int ukbd_lock(keyboard_t *kbd, int lock) { - mtx_assert(&Giant, MA_OWNED); return (1); } @@ -1004,7 +1032,6 @@ ukbd_enable(keyboard_t *kbd) mtx_unlock(&Giant); return (retval); } - mtx_assert(&Giant, MA_OWNED); KBD_ACTIVATE(kbd); return (0); } @@ -1021,7 +1048,6 @@ ukbd_disable(keyboard_t *kbd) mtx_unlock(&Giant); return (retval); } - mtx_assert(&Giant, MA_OWNED); KBD_DEACTIVATE(kbd); return (0); } @@ -1050,7 +1076,6 @@ ukbd_check(keyboard_t *kbd) if (!mtx_owned(&Giant)) return (0); } - mtx_assert(&Giant, MA_OWNED); #ifdef UKBD_EMULATE_ATSCANCODE if (sc->sc_buffered_char[0]) { @@ -1086,7 +1111,6 @@ ukbd_check_char(keyboard_t *kbd) if (!mtx_owned(&Giant)) return (0); } - mtx_assert(&Giant, MA_OWNED); if ((sc->sc_composed_char > 0) && (!(sc->sc_flags & UKBD_FLAG_COMPOSE))) { @@ -1125,7 +1149,6 @@ ukbd_read(keyboard_t *kbd, int wait) if (!mtx_owned(&Giant)) return (-1); } - mtx_assert(&Giant, MA_OWNED); #ifdef UKBD_EMULATE_ATSCANCODE if (sc->sc_buffered_char[0]) { @@ -1190,7 +1213,6 @@ ukbd_read_char(keyboard_t *kbd, int wait if (!mtx_owned(&Giant)) return (NOKEY); } - mtx_assert(&Giant, MA_OWNED); next_code: @@ -1393,7 +1415,6 @@ ukbd_ioctl(keyboard_t *kbd, u_long cmd, */ return (EINVAL); } - mtx_assert(&Giant, MA_OWNED); switch (cmd) { case KDGKBMODE: /* get keyboard mode */ @@ -1527,7 +1548,6 @@ ukbd_clear_state(keyboard_t *kbd) if (!mtx_owned(&Giant)) { return; /* XXX */ } - mtx_assert(&Giant, MA_OWNED); sc->sc_flags &= ~(UKBD_FLAG_COMPOSE | UKBD_FLAG_POLLING); sc->sc_state &= LOCK_MASK; /* preserve locking key state */ @@ -1547,7 +1567,6 @@ ukbd_clear_state(keyboard_t *kbd) static int ukbd_get_state(keyboard_t *kbd, void *buf, size_t len) { - mtx_assert(&Giant, MA_OWNED); return (len == 0) ? 1 : -1; } @@ -1555,7 +1574,6 @@ ukbd_get_state(keyboard_t *kbd, void *bu static int ukbd_set_state(keyboard_t *kbd, void *buf, size_t len) { - mtx_assert(&Giant, MA_OWNED); return (EINVAL); } @@ -1572,7 +1590,6 @@ ukbd_poll(keyboard_t *kbd, int on) mtx_unlock(&Giant); return (retval); } - mtx_assert(&Giant, MA_OWNED); if (on) { sc->sc_flags |= UKBD_FLAG_POLLING;
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200908240458.n7O4wgcE082289>