diff options
Diffstat (limited to 'arch/powerpc/kernel/eeh_pe.c')
| -rw-r--r-- | arch/powerpc/kernel/eeh_pe.c | 26 |
1 files changed, 25 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/eeh_pe.c b/arch/powerpc/kernel/eeh_pe.c index 77632abf6a75..00e3844525a6 100644 --- a/arch/powerpc/kernel/eeh_pe.c +++ b/arch/powerpc/kernel/eeh_pe.c @@ -32,9 +32,24 @@ #include <asm/pci-bridge.h> #include <asm/ppc-pci.h> +static int eeh_pe_aux_size = 0; static LIST_HEAD(eeh_phb_pe); /** + * eeh_set_pe_aux_size - Set PE auxillary data size + * @size: PE auxillary data size + * + * Set PE auxillary data size + */ +void eeh_set_pe_aux_size(int size) +{ + if (size < 0) + return; + + eeh_pe_aux_size = size; +} + +/** * eeh_pe_alloc - Allocate PE * @phb: PCI controller * @type: PE type @@ -44,9 +59,16 @@ static LIST_HEAD(eeh_phb_pe); static struct eeh_pe *eeh_pe_alloc(struct pci_controller *phb, int type) { struct eeh_pe *pe; + size_t alloc_size; + + alloc_size = sizeof(struct eeh_pe); + if (eeh_pe_aux_size) { + alloc_size = ALIGN(alloc_size, cache_line_size()); + alloc_size += eeh_pe_aux_size; + } /* Allocate PHB PE */ - pe = kzalloc(sizeof(struct eeh_pe), GFP_KERNEL); + pe = kzalloc(alloc_size, GFP_KERNEL); if (!pe) return NULL; /* Initialize PHB PE */ @@ -56,6 +78,8 @@ static struct eeh_pe *eeh_pe_alloc(struct pci_controller *phb, int type) INIT_LIST_HEAD(&pe->child); INIT_LIST_HEAD(&pe->edevs); + pe->data = (void *)pe + ALIGN(sizeof(struct eeh_pe), + cache_line_size()); return pe; } |