| Message ID | 1602104101-5592-15-git-send-email-michael.christie@oracle.com |
|---|---|
| State | New |
| Headers | show |
| Series | vhost: fix scsi cmd handling and IOPs | expand |
Hi Mike,
Thank you for the patch! Yet something to improve:
[auto build test ERROR on vhost/linux-next]
[also build test ERROR on next-20201007]
[cannot apply to v5.9-rc8]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]
url: https://github.com/0day-ci/linux/commits/Mike-Christie/vhost-fix-scsi-cmd-handling-and-IOPs/20201008-045802
base: https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git linux-next
config: m68k-allyesconfig (attached as .config)
compiler: m68k-linux-gcc (GCC) 9.3.0
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://github.com/0day-ci/linux/commit/c9bcafefcac3c32ade0ba533609d7b1ddc343c54
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Mike-Christie/vhost-fix-scsi-cmd-handling-and-IOPs/20201008-045802
git checkout c9bcafefcac3c32ade0ba533609d7b1ddc343c54
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=m68k
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All errors (new ones prefixed by >>):
>> m68k-linux-ld: drivers/vhost/scsi.o:(.bss+0x0): multiple definition of `vq'; drivers/vhost/net.o:(.bss+0x0): first defined here
m68k-linux-ld: drivers/vhost/vsock.o:(.bss+0x0): multiple definition of `vq'; drivers/vhost/net.o:(.bss+0x0): first defined here
m68k-linux-ld: drivers/vhost/vdpa.o:(.bss+0x0): multiple definition of `vq'; drivers/vhost/net.o:(.bss+0x0): first defined here
m68k-linux-ld: drivers/vhost/vhost.o:(.bss+0x0): multiple definition of `vq'; drivers/vhost/net.o:(.bss+0x0): first defined here
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
On Thu, Oct 08, 2020 at 08:46:42AM +0800, kernel test robot wrote: > Hi Mike, > > Thank you for the patch! Yet something to improve: > > [auto build test ERROR on vhost/linux-next] > [also build test ERROR on next-20201007] > [cannot apply to v5.9-rc8] > [If your patch is applied to the wrong git tree, kindly drop us a note. > And when submitting patch, we suggest to use '--base' as documented in > https://git-scm.com/docs/git-format-patch] > > url: https://github.com/0day-ci/linux/commits/Mike-Christie/vhost-fix-scsi-cmd-handling-and-IOPs/20201008-045802 > base: https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git linux-next > config: m68k-allyesconfig (attached as .config) > compiler: m68k-linux-gcc (GCC) 9.3.0 > reproduce (this is a W=1 build): > wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross > chmod +x ~/bin/make.cross > # https://github.com/0day-ci/linux/commit/c9bcafefcac3c32ade0ba533609d7b1ddc343c54 > git remote add linux-review https://github.com/0day-ci/linux > git fetch --no-tags linux-review Mike-Christie/vhost-fix-scsi-cmd-handling-and-IOPs/20201008-045802 > git checkout c9bcafefcac3c32ade0ba533609d7b1ddc343c54 > # save the attached .config to linux build tree > COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=m68k > > If you fix the issue, kindly add following tag as appropriate > Reported-by: kernel test robot <lkp@intel.com> > > All errors (new ones prefixed by >>): > > >> m68k-linux-ld: drivers/vhost/scsi.o:(.bss+0x0): multiple definition of `vq'; drivers/vhost/net.o:(.bss+0x0): first defined here > m68k-linux-ld: drivers/vhost/vsock.o:(.bss+0x0): multiple definition of `vq'; drivers/vhost/net.o:(.bss+0x0): first defined here > m68k-linux-ld: drivers/vhost/vdpa.o:(.bss+0x0): multiple definition of `vq'; drivers/vhost/net.o:(.bss+0x0): first defined here > m68k-linux-ld: drivers/vhost/vhost.o:(.bss+0x0): multiple definition of `vq'; drivers/vhost/net.o:(.bss+0x0): first defined here Mike, what's going on with these failures? Can you figure it out pls? > --- > 0-DAY CI Kernel Test Service, Intel Corporation > https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c index fce46f0..a316ed0 100644 --- a/drivers/vhost/net.c +++ b/drivers/vhost/net.c @@ -1322,8 +1322,10 @@ static int vhost_net_open(struct inode *inode, struct file *f) NULL)) goto err_dev_init; - vhost_poll_init(n->poll + VHOST_NET_VQ_TX, handle_tx_net, EPOLLOUT, dev); - vhost_poll_init(n->poll + VHOST_NET_VQ_RX, handle_rx_net, EPOLLIN, dev); + vhost_poll_init(n->poll + VHOST_NET_VQ_TX, handle_tx_net, EPOLLOUT, dev, + vqs[VHOST_NET_VQ_TX]); + vhost_poll_init(n->poll + VHOST_NET_VQ_RX, handle_rx_net, EPOLLIN, dev, + vqs[VHOST_NET_VQ_RX]); f->private_data = n; n->page_frag.page = NULL; diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c index e46b39e..f0038d6 100644 --- a/drivers/vhost/vhost.c +++ b/drivers/vhost/vhost.c @@ -187,13 +187,15 @@ void vhost_work_init(struct vhost_work *work, vhost_work_fn_t fn) /* Init poll structure */ void vhost_poll_init(struct vhost_poll *poll, vhost_work_fn_t fn, - __poll_t mask, struct vhost_dev *dev) + __poll_t mask, struct vhost_dev *dev, + struct vhost_virtqueue *vq) { init_waitqueue_func_entry(&poll->wait, vhost_poll_wakeup); init_poll_funcptr(&poll->table, vhost_poll_func); poll->mask = mask; poll->dev = dev; poll->wqh = NULL; + poll->vq = vq; vhost_work_init(&poll->work, fn); } @@ -283,6 +285,12 @@ void vhost_poll_flush(struct vhost_poll *poll) } EXPORT_SYMBOL_GPL(vhost_poll_flush); +void vhost_vq_work_queue(struct vhost_virtqueue *vq, struct vhost_work *work) +{ + vhost_work_queue_on(vq->dev, work, vq->worker_id); +} +EXPORT_SYMBOL_GPL(vhost_vq_work_queue); + /* A lockless hint for busy polling code to exit the loop */ bool vhost_has_work(struct vhost_dev *dev) { @@ -302,7 +310,7 @@ bool vhost_has_work(struct vhost_dev *dev) void vhost_poll_queue(struct vhost_poll *poll) { - vhost_work_queue(poll->dev, &poll->work); + vhost_vq_work_queue(poll->vq, &poll->work); } EXPORT_SYMBOL_GPL(vhost_poll_queue); @@ -488,11 +496,12 @@ static void __vhost_vq_init(struct vhost_dev *dev, struct vhost_virtqueue *vq) vq->indirect = NULL; vq->heads = NULL; vq->dev = dev; + vq->worker_id = 0; mutex_init(&vq->mutex); vhost_vq_reset(dev, vq); if (vq->handle_kick) - vhost_poll_init(&vq->poll, vq->handle_kick, EPOLLIN, dev); + vhost_poll_init(&vq->poll, vq->handle_kick, EPOLLIN, dev, vq); } static int vhost_vq_init(struct vhost_dev *dev, int vq_idx) @@ -643,6 +652,16 @@ static void vhost_detach_mm(struct vhost_dev *dev) dev->mm = NULL; } +int vhost_vq_set_worker(struct vhost_virtqueue *vq, int worker_id) +{ + if (vhost_vq_get_backend(vq)) + return -EBUSY; + + vq->worker_id = worker_id; + return 0; +} +EXPORT_SYMBOL_GPL(vhost_vq_set_worker); + static void vhost_workers_free(struct vhost_dev *dev) { struct vhost_worker *worker; diff --git a/drivers/vhost/vhost.h b/drivers/vhost/vhost.h index 2bbe85f..6e9643d 100644 --- a/drivers/vhost/vhost.h +++ b/drivers/vhost/vhost.h @@ -16,6 +16,7 @@ #include <linux/irqbypass.h> struct vhost_work; +struct vhost_virtqueue *vq; typedef void (*vhost_work_fn_t)(struct vhost_work *work); #define VHOST_WORK_QUEUED 1 @@ -32,7 +33,6 @@ struct vhost_worker { }; /* Poll a file (eventfd or socket) */ -/* Note: there's nothing vhost specific about this structure. */ struct vhost_poll { poll_table table; wait_queue_head_t *wqh; @@ -40,15 +40,19 @@ struct vhost_poll { struct vhost_work work; __poll_t mask; struct vhost_dev *dev; + struct vhost_virtqueue *vq; }; +int vhost_vq_set_worker(struct vhost_virtqueue *vq, int worker_id); +void vhost_vq_work_queue(struct vhost_virtqueue *vq, struct vhost_work *work); void vhost_work_init(struct vhost_work *work, vhost_work_fn_t fn); void vhost_work_queue(struct vhost_dev *dev, struct vhost_work *work); bool vhost_has_work(struct vhost_dev *dev); int vhost_workers_create(struct vhost_dev *dev, int new_num_workers); void vhost_poll_init(struct vhost_poll *poll, vhost_work_fn_t fn, - __poll_t mask, struct vhost_dev *dev); + __poll_t mask, struct vhost_dev *dev, + struct vhost_virtqueue *vq); int vhost_poll_start(struct vhost_poll *poll, struct file *file); void vhost_poll_stop(struct vhost_poll *poll); void vhost_poll_flush(struct vhost_poll *poll); @@ -92,6 +96,7 @@ struct vhost_virtqueue { struct vhost_poll poll; + int worker_id; /* The routine to call when the Guest pings us, or timeout. */ vhost_work_fn_t handle_kick;
The final patches are going to have vhost scsi create a vhost worker per IO vq. This patch converts the poll code to poll and queue work on the worker that is tied to the vq (in this patch we maintain the old behavior where all vqs use a single worker). For drivers that do not convert over to the multiple worker support or for the case where the user just does not want to allocate the resources then we maintain support for the single worker case. Signed-off-by: Mike Christie <michael.christie@oracle.com> --- drivers/vhost/net.c | 6 ++++-- drivers/vhost/vhost.c | 25 ++++++++++++++++++++++--- drivers/vhost/vhost.h | 9 +++++++-- 3 files changed, 33 insertions(+), 7 deletions(-)