diff options
| author | Vinicius Costa Gomes | 2021-07-26 20:36:55 -0700 |
|---|---|---|
| committer | Tony Nguyen | 2021-08-24 11:36:13 -0700 |
| commit | 014408cd624e9fd2820f4a593b710325ee05fec9 (patch) | |
| tree | 87b6e088042f95030f03c5e464c0d813c980ddcb /include | |
| parent | 1d71eb53e45187f58089d32b51e27784c791d90e (diff) | |
PCI: Add pcie_ptm_enabled()
Add a predicate that returns if PCIe PTM (Precision Time Measurement)
is enabled.
It will only return true if it's enabled in all the ports in the path
from the device to the root.
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/pci.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/pci.h b/include/linux/pci.h index 21a9d244e4e4..947430637cac 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -1622,9 +1622,12 @@ bool pci_ats_disabled(void); #ifdef CONFIG_PCIE_PTM int pci_enable_ptm(struct pci_dev *dev, u8 *granularity); +bool pcie_ptm_enabled(struct pci_dev *dev); #else static inline int pci_enable_ptm(struct pci_dev *dev, u8 *granularity) { return -EINVAL; } +static inline bool pcie_ptm_enabled(struct pci_dev *dev) +{ return false; } #endif void pci_cfg_access_lock(struct pci_dev *dev); |