diff options
Diffstat (limited to 'drivers/staging/rdma/hfi1/verbs.h')
| -rw-r--r-- | drivers/staging/rdma/hfi1/verbs.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/staging/rdma/hfi1/verbs.h b/drivers/staging/rdma/hfi1/verbs.h index a85e6bc580b6..6c4670fffdbb 100644 --- a/drivers/staging/rdma/hfi1/verbs.h +++ b/drivers/staging/rdma/hfi1/verbs.h @@ -475,6 +475,28 @@ int hfi1_verbs_send_dma(struct rvt_qp *qp, struct hfi1_pkt_state *ps, int hfi1_verbs_send_pio(struct rvt_qp *qp, struct hfi1_pkt_state *ps, u64 pbc); +int hfi1_wss_init(void); +void hfi1_wss_exit(void); + +/* platform specific: return the lowest level cache (llc) size, in KiB */ +static inline int wss_llc_size(void) +{ + /* assume that the boot CPU value is universal for all CPUs */ + return boot_cpu_data.x86_cache_size; +} + +/* platform specific: cacheless copy */ +static inline void cacheless_memcpy(void *dst, void *src, size_t n) +{ + /* + * Use the only available X64 cacheless copy. Add a __user cast + * to quiet sparse. The src agument is already in the kernel so + * there are no security issues. The extra fault recovery machinery + * is not invoked. + */ + __copy_user_nocache(dst, (void __user *)src, n, 0); +} + extern const enum ib_wc_opcode ib_hfi1_wc_opcode[]; extern const u8 hdr_len_by_opcode[]; |