On Mon, Sep 14, 2020 at 07:34:19AM -0700, kan.li...@linux.intel.com wrote: > From: Kan Liang <kan.li...@linux.intel.com> > > Some uncore counters may be located in the configuration space of a PCI > device, which already has a bonded driver. Currently, the uncore driver > cannot register a PCI uncore PMU for these counters, because, to > register a PCI uncore PMU, the uncore driver must be bond to the device. > However, one device can only have one bonded driver. > > Add an uncore PCI sub driver to support such kind of devices. > > The sub driver doesn't own the device. In initialization, the sub > driver searches the device via pci_get_device(), and register the > corresponding PMU for the device. In the meantime, the sub driver > registeris a PCI bus notifier, which is used to notify the sub driver > once the device is removed. The sub driver can unregister the PMU > accordingly.
s/registeris/registers/ It looks like this only handles hot-remove of the device, not hot-add. Maybe that's OK for your use case, I dunno, so just pointing it out.
