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Store statistics on how often we have to cancel async bulk transfers and add a debug message whenever we do.

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This commit is contained in:
Con Kolivas 2013-10-03 12:05:48 +10:00
parent 603bba67b9
commit bfdf3af1a4
2 changed files with 7 additions and 2 deletions
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1
miner.h
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@ -487,6 +487,7 @@ struct cgpu_info {
int usb_rlock_total_wait;
int usb_wlock_max_wait;
int usb_rlock_max_wait;
int usb_cancels;
#endif
#ifdef USE_MODMINER
char fpgaid;

8
usbutils.c
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@ -2226,7 +2226,8 @@ static void LIBUSB_CALL bulk_callback(struct libusb_transfer *transfer)
/* Wait for callback function to tell us it has finished the USB transfer, but
* use our own timer to cancel the request if we go beyond the timeout. */
static int callback_wait(struct usb_transfer *ut, int *transferred, unsigned int timeout)
static int callback_wait(struct cgpu_info *cgpu, struct usb_transfer *ut, int *transferred,
unsigned int timeout)
{
struct libusb_transfer *transfer= ut->transfer;
struct timespec ts_now, ts_end;
@ -2246,6 +2247,9 @@ static int callback_wait(struct usb_transfer *ut, int *transferred, unsigned int
* it the same as a timeout. */
libusb_clear_halt(transfer->dev_handle, transfer->endpoint);
libusb_cancel_transfer(transfer);
applog(LOG_DEBUG, "%s%i: libusb cancelling async bulk transfer",
cgpu->drv->name, cgpu->device_id);
cgpu->usb_cancels++;
/* Now wait for the callback function to be invoked. */
pthread_cond_wait(&ut->cond, &ut->mutex);
@ -2304,7 +2308,7 @@ usb_bulk_transfer(struct libusb_device_handle *dev_handle, int intinfo,
cg_runlock(&cgusb_fd_lock);
errn = errno;
if (!err)
err = callback_wait(&ut, transferred, timeout);
err = callback_wait(cgpu, &ut, transferred, timeout);
STATS_TIMEVAL(&tv_finish);
USB_STATS(cgpu, &tv_start, &tv_finish, err, mode, cmd, seq, timeout);