| Message ID | 20201104140030.6853-7-mika.westerberg@linux.intel.com (mailing list archive) |
|---|---|
| State | Not Applicable |
| Delegated to: | Netdev Maintainers |
| Headers | show |
| Series | thunderbolt: Add DMA traffic test driver | expand |
On Wed, Nov 04, 2020 at 05:00:26PM +0300, Mika Westerberg wrote: > This allows service drivers to use it as parent directory if they need > to add their own debugfs entries. > > Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> > --- > drivers/thunderbolt/debugfs.c | 24 ++++++++++++++++++++++++ > drivers/thunderbolt/tb.h | 4 ++++ > drivers/thunderbolt/xdomain.c | 3 +++ > include/linux/thunderbolt.h | 4 ++++ > 4 files changed, 35 insertions(+) > > diff --git a/drivers/thunderbolt/debugfs.c b/drivers/thunderbolt/debugfs.c > index ed65d2b13964..a80278fc50af 100644 > --- a/drivers/thunderbolt/debugfs.c > +++ b/drivers/thunderbolt/debugfs.c > @@ -691,6 +691,30 @@ void tb_switch_debugfs_remove(struct tb_switch *sw) > debugfs_remove_recursive(sw->debugfs_dir); > } > > +/** > + * tb_service_debugfs_init() - Add debugfs directory for service > + * @svc: Thunderbolt service pointer > + * > + * Adds debugfs directory for service. > + */ > +void tb_service_debugfs_init(struct tb_service *svc) > +{ > + svc->debugfs_dir = debugfs_create_dir(dev_name(&svc->dev), > + tb_debugfs_root); > +} > + > +/** > + * tb_service_debugfs_remove() - Remove service debugfs directory > + * @svc: Thunderbolt service pointer > + * > + * Removes the previously created debugfs directory for @svc. > + */ > +void tb_service_debugfs_remove(struct tb_service *svc) > +{ > + debugfs_remove(svc->debugfs_dir); debugfs_remove_recursive() just to be safe that you really did clean everything up? As you aren't "owning" this directory here, you don't know what will get added by some other patch :) Other than that tiny nit, this series looks good to me, nice work. thanks, greg k-h
On Wed, Nov 04, 2020 at 03:20:38PM +0100, Greg KH wrote: > > +/** > > + * tb_service_debugfs_remove() - Remove service debugfs directory > > + * @svc: Thunderbolt service pointer > > + * > > + * Removes the previously created debugfs directory for @svc. > > + */ > > +void tb_service_debugfs_remove(struct tb_service *svc) > > +{ > > + debugfs_remove(svc->debugfs_dir); > > debugfs_remove_recursive() just to be safe that you really did clean > everything up? As you aren't "owning" this directory here, you don't > know what will get added by some other patch :) Good point. I'll change it to debugfs_remove_recursive(). > Other than that tiny nit, this series looks good to me, nice work. Thanks!
diff --git a/drivers/thunderbolt/debugfs.c b/drivers/thunderbolt/debugfs.c index ed65d2b13964..a80278fc50af 100644 --- a/drivers/thunderbolt/debugfs.c +++ b/drivers/thunderbolt/debugfs.c @@ -691,6 +691,30 @@ void tb_switch_debugfs_remove(struct tb_switch *sw) debugfs_remove_recursive(sw->debugfs_dir); } +/** + * tb_service_debugfs_init() - Add debugfs directory for service + * @svc: Thunderbolt service pointer + * + * Adds debugfs directory for service. + */ +void tb_service_debugfs_init(struct tb_service *svc) +{ + svc->debugfs_dir = debugfs_create_dir(dev_name(&svc->dev), + tb_debugfs_root); +} + +/** + * tb_service_debugfs_remove() - Remove service debugfs directory + * @svc: Thunderbolt service pointer + * + * Removes the previously created debugfs directory for @svc. + */ +void tb_service_debugfs_remove(struct tb_service *svc) +{ + debugfs_remove(svc->debugfs_dir); + svc->debugfs_dir = NULL; +} + void tb_debugfs_init(void) { tb_debugfs_root = debugfs_create_dir("thunderbolt", NULL); diff --git a/drivers/thunderbolt/tb.h b/drivers/thunderbolt/tb.h index aa7e2dc66059..08af4fe642c0 100644 --- a/drivers/thunderbolt/tb.h +++ b/drivers/thunderbolt/tb.h @@ -1029,11 +1029,15 @@ void tb_debugfs_init(void); void tb_debugfs_exit(void); void tb_switch_debugfs_init(struct tb_switch *sw); void tb_switch_debugfs_remove(struct tb_switch *sw); +void tb_service_debugfs_init(struct tb_service *svc); +void tb_service_debugfs_remove(struct tb_service *svc); #else static inline void tb_debugfs_init(void) { } static inline void tb_debugfs_exit(void) { } static inline void tb_switch_debugfs_init(struct tb_switch *sw) { } static inline void tb_switch_debugfs_remove(struct tb_switch *sw) { } +static inline void tb_service_debugfs_init(struct tb_service *svc) { } +static inline void tb_service_debugfs_remove(struct tb_service *svc) { } #endif #ifdef CONFIG_USB4_KUNIT_TEST diff --git a/drivers/thunderbolt/xdomain.c b/drivers/thunderbolt/xdomain.c index 63889fbd8156..c36b29736cd0 100644 --- a/drivers/thunderbolt/xdomain.c +++ b/drivers/thunderbolt/xdomain.c @@ -777,6 +777,7 @@ static void tb_service_release(struct device *dev) struct tb_service *svc = container_of(dev, struct tb_service, dev); struct tb_xdomain *xd = tb_service_parent(svc); + tb_service_debugfs_remove(svc); ida_simple_remove(&xd->service_ids, svc->id); kfree(svc->key); kfree(svc); @@ -891,6 +892,8 @@ static void enumerate_services(struct tb_xdomain *xd) svc->dev.parent = &xd->dev; dev_set_name(&svc->dev, "%s.%d", dev_name(&xd->dev), svc->id); + tb_service_debugfs_init(svc); + if (device_register(&svc->dev)) { put_device(&svc->dev); break; diff --git a/include/linux/thunderbolt.h b/include/linux/thunderbolt.h index 0a747f92847e..a844fd5d96ab 100644 --- a/include/linux/thunderbolt.h +++ b/include/linux/thunderbolt.h @@ -350,6 +350,9 @@ void tb_unregister_protocol_handler(struct tb_protocol_handler *handler); * @prtcvers: Protocol version from the properties directory * @prtcrevs: Protocol software revision from the properties directory * @prtcstns: Protocol settings mask from the properties directory + * @debugfs_dir: Pointer to the service debugfs directory. Always created + * when debugfs is enabled. Can be used by service drivers to + * add their own entries under the service. * * Each domain exposes set of services it supports as collection of * properties. For each service there will be one corresponding @@ -363,6 +366,7 @@ struct tb_service { u32 prtcvers; u32 prtcrevs; u32 prtcstns; + struct dentry *debugfs_dir; }; static inline struct tb_service *tb_service_get(struct tb_service *svc)
This allows service drivers to use it as parent directory if they need to add their own debugfs entries. Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> --- drivers/thunderbolt/debugfs.c | 24 ++++++++++++++++++++++++ drivers/thunderbolt/tb.h | 4 ++++ drivers/thunderbolt/xdomain.c | 3 +++ include/linux/thunderbolt.h | 4 ++++ 4 files changed, 35 insertions(+)