diff options
| author | Santosh Shilimkar <santosh.shilimkar@oracle.com> | 2019-04-25 12:52:07 -0700 |
|---|---|---|
| committer | Santosh Shilimkar <santosh.shilimkar@oracle.com> | 2019-04-25 12:59:21 -0700 |
| commit | f615733b712484ea1ab10c729d98d361b1a94db2 (patch) | |
| tree | 194f1d264d118051e1d58f78043249a9160db9be | |
| parent | 7cf53e52f4425b425b290986794a1a8899dceb77 (diff) | |
| download | linux-net-next/master-v5.1-rcx.tar.gz | |
rds: add sysctl for rds support of On-Demand-Pagingnet-next/master-v5.1-rcx
RDS doesn't support RDMA on memory apertures that require On Demand
Paging (ODP), such as FS DAX memory. A sysctl is added to indicate
whether RDMA requiring ODP is supported.
Reviewed-by: Håkon Bugge <haakon.bugge@oracle.com>
Reviewed-tested-by: Zhu Yanjun <yanjun.zhu@oracle.com>
Signed-off-by: Hans Westgaard Ry <hans.westgaard.ry@oracle.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
| -rw-r--r-- | net/rds/ib.h | 1 | ||||
| -rw-r--r-- | net/rds/ib_sysctl.c | 8 |
2 files changed, 9 insertions, 0 deletions
diff --git a/net/rds/ib.h b/net/rds/ib.h index 67a715b076cab1..80e11ef32450fb 100644 --- a/net/rds/ib.h +++ b/net/rds/ib.h @@ -457,5 +457,6 @@ extern unsigned long rds_ib_sysctl_max_unsig_wrs; extern unsigned long rds_ib_sysctl_max_unsig_bytes; extern unsigned long rds_ib_sysctl_max_recv_allocation; extern unsigned int rds_ib_sysctl_flow_control; +extern unsigned int rds_ib_sysctl_odp_support; #endif diff --git a/net/rds/ib_sysctl.c b/net/rds/ib_sysctl.c index e4e41b3afce713..7cc02cdc1c374b 100644 --- a/net/rds/ib_sysctl.c +++ b/net/rds/ib_sysctl.c @@ -60,6 +60,7 @@ static unsigned long rds_ib_sysctl_max_unsig_wr_max = 64; * will cause credits to be added before protocol negotiation. */ unsigned int rds_ib_sysctl_flow_control = 0; +unsigned int rds_ib_sysctl_odp_support; static struct ctl_table rds_ib_sysctl_table[] = { { @@ -103,6 +104,13 @@ static struct ctl_table rds_ib_sysctl_table[] = { .mode = 0644, .proc_handler = proc_dointvec, }, + { + .procname = "odp_support", + .data = &rds_ib_sysctl_odp_support, + .maxlen = sizeof(rds_ib_sysctl_odp_support), + .mode = 0444, + .proc_handler = proc_dointvec, + }, { } }; |