search for: vhost_set_vring_busyloop_timeout

...dian(); vhost_vq_reset_user_be(vq); + vq->busyloop_timeout = 0; } static int vhost_worker(void *data) @@ -919,6 +920,19 @@ long vhost_vring_ioctl(struct vhost_dev *d, int ioctl, void __user *argp) case VHOST_GET_VRING_ENDIAN: r = vhost_get_vring_endian(vq, idx, argp); break; + case VHOST_SET_VRING_BUSYLOOP_TIMEOUT: + if (copy_from_user(&s, argp, sizeof(s))) { + r = -EFAULT; + break; + } + vq->busyloop_timeout = s.num; + break; + case VHOST_GET_VRING_BUSYLOOP_TIMEOUT: + s.index = idx; + s.num = vq->busyloop_timeout; + if (copy_to_user(argp, &s, sizeof(s))) + r = -EFAULT; + break;...

...ost_vring_file f; struct vhost_vring_addr a; + struct vhost_vring_busyloop_timeout t; u32 idx; long r; @@ -919,6 +921,19 @@ long vhost_vring_ioctl(struct vhost_dev *d, int ioctl, void __user *argp) case VHOST_GET_VRING_ENDIAN: r = vhost_get_vring_endian(vq, idx, argp); break; + case VHOST_SET_VRING_BUSYLOOP_TIMEOUT: + if (copy_from_user(&t, argp, sizeof(t))) { + r = -EFAULT; + break; + } + vq->busyloop_timeout = t.timeout; + break; + case VHOST_GET_VRING_BUSYLOOP_TIMEOUT: + t.index = idx; + t.timeout = vq->busyloop_timeout; + if (copy_to_user(argp, &t, sizeof(t))) + r = -EFAULT; +...

...; > + struct vhost_vring_busyloop_timeout t; > u32 idx; > long r; > > @@ -919,6 +921,19 @@ long vhost_vring_ioctl(struct vhost_dev *d, int ioctl, void __user *argp) > case VHOST_GET_VRING_ENDIAN: > r = vhost_get_vring_endian(vq, idx, argp); > break; > + case VHOST_SET_VRING_BUSYLOOP_TIMEOUT: > + if (copy_from_user(&t, argp, sizeof(t))) { > + r = -EFAULT; > + break; > + } > + vq->busyloop_timeout = t.timeout; > + break; > + case VHOST_GET_VRING_BUSYLOOP_TIMEOUT: > + t.index = idx; > + t.timeout = vq->busyloop_timeout; > + if (copy_to_u...

...; > + struct vhost_vring_busyloop_timeout t; > u32 idx; > long r; > > @@ -919,6 +921,19 @@ long vhost_vring_ioctl(struct vhost_dev *d, int ioctl, void __user *argp) > case VHOST_GET_VRING_ENDIAN: > r = vhost_get_vring_endian(vq, idx, argp); > break; > + case VHOST_SET_VRING_BUSYLOOP_TIMEOUT: > + if (copy_from_user(&t, argp, sizeof(t))) { > + r = -EFAULT; > + break; > + } > + vq->busyloop_timeout = t.timeout; > + break; > + case VHOST_GET_VRING_BUSYLOOP_TIMEOUT: > + t.index = idx; > + t.timeout = vq->busyloop_timeout; > + if (copy_to_u...

Hi all: This series tries to add basic busy polling for vhost net. The idea is simple: at the end of tx/rx processing, busy polling for new tx added descriptor and rx receive socket for a while. The maximum number of time (in us) could be spent on busy polling was specified ioctl. Test A were done through: - 50 us as busy loop timeout - Netperf 2.6 - Two machines with back to back connected

Hi all: This series tries to add basic busy polling for vhost net. The idea is simple: at the end of tx/rx processing, busy polling for new tx added descriptor and rx receive socket for a while. The maximum number of time (in us) could be spent on busy polling was specified ioctl. Test A were done through: - 50 us as busy loop timeout - Netperf 2.6 - Two machines with back to back connected

This series tries to add basic busy polling for vhost net. The idea is simple: at the end of tx/rx processing, busy polling for new tx added descriptor and rx receive socket for a while. The maximum number of time (in us) could be spent on busy polling was specified ioctl. Test A were done through: - 50 us as busy loop timeout - Netperf 2.6 - Two machines with back to back connected mlx4 - Guest

This series tries to add basic busy polling for vhost net. The idea is simple: at the end of tx/rx processing, busy polling for new tx added descriptor and rx receive socket for a while. The maximum number of time (in us) could be spent on busy polling was specified ioctl. Test A were done through: - 50 us as busy loop timeout - Netperf 2.6 - Two machines with back to back connected mlx4 - Guest

...vq->busyloop_timeout = 0; > } > > static int vhost_worker(void *data) > @@ -919,6 +920,19 @@ long vhost_vring_ioctl(struct vhost_dev *d, int ioctl, void __user *argp) > case VHOST_GET_VRING_ENDIAN: > r = vhost_get_vring_endian(vq, idx, argp); > break; > + case VHOST_SET_VRING_BUSYLOOP_TIMEOUT: > + if (copy_from_user(&s, argp, sizeof(s))) { > + r = -EFAULT; > + break; > + } > + vq->busyloop_timeout = s.num; > + break; > + case VHOST_GET_VRING_BUSYLOOP_TIMEOUT: > + s.index = idx; > + s.num = vq->busyloop_timeout; > + if (copy_to_user(argp...

...vq->busyloop_timeout = 0; > } > > static int vhost_worker(void *data) > @@ -919,6 +920,19 @@ long vhost_vring_ioctl(struct vhost_dev *d, int ioctl, void __user *argp) > case VHOST_GET_VRING_ENDIAN: > r = vhost_get_vring_endian(vq, idx, argp); > break; > + case VHOST_SET_VRING_BUSYLOOP_TIMEOUT: > + if (copy_from_user(&s, argp, sizeof(s))) { > + r = -EFAULT; > + break; > + } > + vq->busyloop_timeout = s.num; > + break; > + case VHOST_GET_VRING_BUSYLOOP_TIMEOUT: > + s.index = idx; > + s.num = vq->busyloop_timeout; > + if (copy_to_user(argp...

Hi all: This series tries to add basic busy polling for vhost net. The idea is simple: at the end of tx/rx processing, busy polling for new tx added descriptor and rx receive socket for a while. The maximum number of time (in us) could be spent on busy polling was specified ioctl. Test were done through: - 50 us as busy loop timeout - Netperf 2.6 - Two machines with back to back connected ixgbe

Hi all: This series tries to add basic busy polling for vhost net. The idea is simple: at the end of tx/rx processing, busy polling for new tx added descriptor and rx receive socket for a while. The maximum number of time (in us) could be spent on busy polling was specified ioctl. Test were done through: - 50 us as busy loop timeout - Netperf 2.6 - Two machines with back to back connected ixgbe

This series tries to add basic busy polling for vhost net. The idea is simple: at the end of tx/rx processing, busy polling for new tx added descriptor and rx receive socket for a while. The maximum number of time (in us) could be spent on busy polling was specified ioctl. Test A were done through: - 50 us as busy loop timeout - Netperf 2.6 - Two machines with back to back connected mlx4 - Guest

This series tries to add basic busy polling for vhost net. The idea is simple: at the end of tx/rx processing, busy polling for new tx added descriptor and rx receive socket for a while. The maximum number of time (in us) could be spent on busy polling was specified ioctl. Test A were done through: - 50 us as busy loop timeout - Netperf 2.6 - Two machines with back to back connected mlx4 - Guest

...; 2751c9882b9472 Greg Kurz 2015-04-24 1615 case VHOST_GET_VRING_ENDIAN: 2751c9882b9472 Greg Kurz 2015-04-24 1616 r = vhost_get_vring_endian(vq, idx, argp); 2751c9882b9472 Greg Kurz 2015-04-24 1617 break; 03088137246065 Jason Wang 2016-03-04 1618 case VHOST_SET_VRING_BUSYLOOP_TIMEOUT: 03088137246065 Jason Wang 2016-03-04 1619 if (copy_from_user(&s, argp, sizeof(s))) { 03088137246065 Jason Wang 2016-03-04 1620 r = -EFAULT; 03088137246065 Jason Wang 2016-03-04 1621 break; 03088137246065 Jason Wang 2016-03-04 1622 } 03088137246...

We try to keep the defconfig untouched after decoupling CONFIG_VHOST out of CONFIG_VIRTUALIZATION in commit 20c384f1ea1a ("vhost: refine vhost and vringh kconfig") by enabling VHOST_MENU by default. Then the defconfigs can keep enabling CONFIG_VHOST_NET without the caring of CONFIG_VHOST. But this will leave a "CONFIG_VHOST_MENU=y" in all defconfigs and even for the ones that

We try to keep the defconfig untouched after decoupling CONFIG_VHOST out of CONFIG_VIRTUALIZATION in commit 20c384f1ea1a ("vhost: refine vhost and vringh kconfig") by enabling VHOST_MENU by default. Then the defconfigs can keep enabling CONFIG_VHOST_NET without the caring of CONFIG_VHOST. But this will leave a "CONFIG_VHOST_MENU=y" in all defconfigs and even for the ones that