diff options
Diffstat (limited to 'include/linux/pci-epc.h')
| -rw-r--r-- | include/linux/pci-epc.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/pci-epc.h b/include/linux/pci-epc.h index f641badc2c61..0c12d69dde92 100644 --- a/include/linux/pci-epc.h +++ b/include/linux/pci-epc.h @@ -71,6 +71,7 @@ struct pci_epc_ops { * @bitmap: bitmap to manage the PCI address space * @pages: number of bits representing the address region * @page_size: size of each page + * @lock: mutex to protect bitmap */ struct pci_epc_mem { phys_addr_t phys_base; @@ -78,6 +79,8 @@ struct pci_epc_mem { unsigned long *bitmap; size_t page_size; int pages; + /* mutex to protect against concurrent access for memory allocation*/ + struct mutex lock; }; /** |