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RDMA/siw: Remove unused siw_mem_add

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siw_mem_add() was added in 2019 by commit 2251334dca ("rdma/siw:
application buffer management") but has remained unused.

Remove it.

Link: https://patch.msgid.link/r/20250505210226.88994-1-linux@treblig.org
Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Acked-by: Bernard Metzler <bmt@zurich.ibm.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
This commit is contained in:
Dr. David Alan Gilbert
2025-05-05 22:02:26 +01:00
committed by Jason Gunthorpe
parent 7ccc2a0646
commit e56b4eab9c
2 changed files with 0 additions and 25 deletions
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24
drivers/infiniband/sw/siw/siw_mem.c
View File

@@ -17,30 +17,6 @@
/* Stag lookup is based on its index part only (24 bits). */
#define SIW_STAG_MAX_INDEX 0x00ffffff
/*
* The code avoids special Stag of zero and tries to randomize
* STag values between 1 and SIW_STAG_MAX_INDEX.
*/
int siw_mem_add(struct siw_device *sdev, struct siw_mem *m)
{
struct xa_limit limit = XA_LIMIT(1, SIW_STAG_MAX_INDEX);
u32 id, next;
get_random_bytes(&next, 4);
next &= SIW_STAG_MAX_INDEX;
if (xa_alloc_cyclic(&sdev->mem_xa, &id, m, limit, &next,
GFP_KERNEL) < 0)
return -ENOMEM;
/* Set the STag index part */
m->stag = id << 8;
siw_dbg_mem(m, "new MEM object\n");
return 0;
}
/*
* siw_mem_id2obj()
*

1
drivers/infiniband/sw/siw/siw_mem.h
View File

@@ -12,7 +12,6 @@ void siw_umem_release(struct siw_umem *umem);
struct siw_pbl *siw_pbl_alloc(u32 num_buf);
dma_addr_t siw_pbl_get_buffer(struct siw_pbl *pbl, u64 off, int *len, int *idx);
struct siw_mem *siw_mem_id2obj(struct siw_device *sdev, int stag_index);
int siw_mem_add(struct siw_device *sdev, struct siw_mem *m);
int siw_invalidate_stag(struct ib_pd *pd, u32 stag);
int siw_check_mem(struct ib_pd *pd, struct siw_mem *mem, u64 addr,
enum ib_access_flags perms, int len);