| Message ID | 20210719051944.40871-1-guangming.cao@mediatek.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | dma_buf: remove dmabuf sysfs teardown before release/detach | expand |
Hi Guangming, Am 19.07.21 um 07:19 schrieb guangming.cao@mediatek.com: > From: Guangming Cao <Guangming.Cao@mediatek.com> > > Dmabuf sysfs stat is used for dmabuf info track. > but these file maybe still use after buffer release/detach, > should clear it before buffer release/detach. In general looks correct to me, but Hridya already send out a patch to partially revert the attachment sysfs files since they caused a bunch of more problems for some users. Please wait for that to land in branch drm-misc-next and then rebase yours on top of it. I will give you a ping when that is done. Thanks, Christian. > > Signed-off-by: Guangming Cao <Guangming.Cao@mediatek.com> > --- > drivers/dma-buf/dma-buf.c | 5 +++-- > 1 file changed, 3 insertions(+), 2 deletions(-) > > diff --git a/drivers/dma-buf/dma-buf.c b/drivers/dma-buf/dma-buf.c > index 510b42771974..9fa4620bd4bb 100644 > --- a/drivers/dma-buf/dma-buf.c > +++ b/drivers/dma-buf/dma-buf.c > @@ -76,12 +76,12 @@ static void dma_buf_release(struct dentry *dentry) > */ > BUG_ON(dmabuf->cb_shared.active || dmabuf->cb_excl.active); > > + dma_buf_stats_teardown(dmabuf); > dmabuf->ops->release(dmabuf); > > if (dmabuf->resv == (struct dma_resv *)&dmabuf[1]) > dma_resv_fini(dmabuf->resv); > > - dma_buf_stats_teardown(dmabuf); > module_put(dmabuf->owner); > kfree(dmabuf->name); > kfree(dmabuf); > @@ -875,10 +875,11 @@ void dma_buf_detach(struct dma_buf *dmabuf, struct dma_buf_attachment *attach) > dma_resv_lock(dmabuf->resv, NULL); > list_del(&attach->node); > dma_resv_unlock(dmabuf->resv); > + > + dma_buf_attach_stats_teardown(attach); > if (dmabuf->ops->detach) > dmabuf->ops->detach(dmabuf, attach); > > - dma_buf_attach_stats_teardown(attach); > kfree(attach); > } > EXPORT_SYMBOL_GPL(dma_buf_detach);
Am 19.07.21 um 07:19 schrieb guangming.cao@mediatek.com: > From: Guangming Cao <Guangming.Cao@mediatek.com> > > Dmabuf sysfs stat is used for dmabuf info track. > but these file maybe still use after buffer release/detach, > should clear it before buffer release/detach. Please rebase on current drm-misc-next. The attachment sysfs files have been removed in the meantime. Thanks, Christian. > > Signed-off-by: Guangming Cao <Guangming.Cao@mediatek.com> > --- > drivers/dma-buf/dma-buf.c | 5 +++-- > 1 file changed, 3 insertions(+), 2 deletions(-) > > diff --git a/drivers/dma-buf/dma-buf.c b/drivers/dma-buf/dma-buf.c > index 510b42771974..9fa4620bd4bb 100644 > --- a/drivers/dma-buf/dma-buf.c > +++ b/drivers/dma-buf/dma-buf.c > @@ -76,12 +76,12 @@ static void dma_buf_release(struct dentry *dentry) > */ > BUG_ON(dmabuf->cb_shared.active || dmabuf->cb_excl.active); > > + dma_buf_stats_teardown(dmabuf); > dmabuf->ops->release(dmabuf); > > if (dmabuf->resv == (struct dma_resv *)&dmabuf[1]) > dma_resv_fini(dmabuf->resv); > > - dma_buf_stats_teardown(dmabuf); > module_put(dmabuf->owner); > kfree(dmabuf->name); > kfree(dmabuf); > @@ -875,10 +875,11 @@ void dma_buf_detach(struct dma_buf *dmabuf, struct dma_buf_attachment *attach) > dma_resv_lock(dmabuf->resv, NULL); > list_del(&attach->node); > dma_resv_unlock(dmabuf->resv); > + > + dma_buf_attach_stats_teardown(attach); > if (dmabuf->ops->detach) > dmabuf->ops->detach(dmabuf, attach); > > - dma_buf_attach_stats_teardown(attach); > kfree(attach); > } > EXPORT_SYMBOL_GPL(dma_buf_detach);
From: Guangming Cao <Guangming.Cao@mediatek.com> On Tue, 2021-07-20 at 11:31 +0200, Christian König wrote: > Am 19.07.21 um 07:19 schrieb guangming.cao@mediatek.com: > > From: Guangming Cao <Guangming.Cao@mediatek.com> > > > > Dmabuf sysfs stat is used for dmabuf info track. > > but these file maybe still use after buffer release/detach, > > should clear it before buffer release/detach. > > Please rebase on current drm-misc-next. The attachment sysfs files > have > been removed in the meantime. > > Thanks, > Christian. > updated, thanks for your reminding.
diff --git a/drivers/dma-buf/dma-buf.c b/drivers/dma-buf/dma-buf.c index 510b42771974..9fa4620bd4bb 100644 --- a/drivers/dma-buf/dma-buf.c +++ b/drivers/dma-buf/dma-buf.c @@ -76,12 +76,12 @@ static void dma_buf_release(struct dentry *dentry) */ BUG_ON(dmabuf->cb_shared.active || dmabuf->cb_excl.active); + dma_buf_stats_teardown(dmabuf); dmabuf->ops->release(dmabuf); if (dmabuf->resv == (struct dma_resv *)&dmabuf[1]) dma_resv_fini(dmabuf->resv); - dma_buf_stats_teardown(dmabuf); module_put(dmabuf->owner); kfree(dmabuf->name); kfree(dmabuf); @@ -875,10 +875,11 @@ void dma_buf_detach(struct dma_buf *dmabuf, struct dma_buf_attachment *attach) dma_resv_lock(dmabuf->resv, NULL); list_del(&attach->node); dma_resv_unlock(dmabuf->resv); + + dma_buf_attach_stats_teardown(attach); if (dmabuf->ops->detach) dmabuf->ops->detach(dmabuf, attach); - dma_buf_attach_stats_teardown(attach); kfree(attach); } EXPORT_SYMBOL_GPL(dma_buf_detach);