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| author |   Huy Nguyen <huyn@mellanox.com> | 2018-01-08 12:15:38 +0200 |
|---|---|---|
| committer |   Jason Gunthorpe <jgg@mellanox.com> | 2018-01-10 22:00:32 -0700 |
| commit | 8cf12d7780b72ee421d18e1f8a15daf43fa6d1e6 (patch) | |
| tree | 35724d9b304785e271624b00c555356402bd6b17 /drivers/infiniband/core/core_priv.h | |
| parent | IB/core: Remove the locking for character device bitmaps (diff) | |
| download | linux-dev-8cf12d7780b72ee421d18e1f8a15daf43fa6d1e6.tar.xz linux-dev-8cf12d7780b72ee421d18e1f8a15daf43fa6d1e6.zip | |
IB/core: Increase number of char device minors
There is a need to increase number of possible char devices to support
large number of SR-IOV instances. The current limit is in the range of
64-128 devices/ports. Increase it to support up to 1024.
The patch performs the following steps to refactor the code:
1. Removes the split bitmap for fixed and overflow dev numbers.
2. Pre-allocates the non-legacy major number range during driver
initialization, choosen for simplicity.
3. Add new define (RDMA_MAX_PORTS) that is shared between all drivers.
This is the maximum total number of ports on all struct ib_devices.
4. Set RDMA_MAX_PORTS to 1024.
Signed-off-by: Huy Nguyen <huyn@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to '')
| -rw-r--r-- | drivers/infiniband/core/core_priv.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/infiniband/core/core_priv.h b/drivers/infiniband/core/core_priv.h index 74091bdca245..aef9aa0ac0e6 100644 --- a/drivers/infiniband/core/core_priv.h +++ b/drivers/infiniband/core/core_priv.h @@ -42,6 +42,9 @@ #include <rdma/ib_mad.h> #include "mad_priv.h" +/* Total number of ports combined across all struct ib_devices's */ +#define RDMA_MAX_PORTS 1024 + struct pkey_index_qp_list { struct list_head pkey_index_list; u16 pkey_index; |