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RDMA/core: Add FRMR pools statistics

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Count for each pool the number of FRMR handles popped and held by user
MRs.
Also keep track of the max value of this counter.

Next patches will expose the statistics through netlink.

Signed-off-by: Michael Guralnik <michaelgur@nvidia.com>
Reviewed-by: Yishai Hadas <yishaih@nvidia.com>
Signed-off-by: Edward Srouji <edwards@nvidia.com>
Link: https://patch.msgid.link/20260226-frmr_pools-v4-4-95360b54f15e@nvidia.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
This commit is contained in:
Michael Guralnik
2026-02-26 15:52:09 +02:00
committed by Leon Romanovsky
parent 84cb1dd06f
commit 304725adec
2 changed files with 13 additions and 2 deletions
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12
drivers/infiniband/core/frmr_pools.c
View File

@@ -310,19 +310,24 @@ static int get_frmr_from_pool(struct ib_device *device,
if (pool->inactive_queue.ci > 0) {
handle = pop_handle_from_queue_locked(
&pool->inactive_queue);
spin_unlock(&pool->lock);
} else {
spin_unlock(&pool->lock);
err = pools->pool_ops->create_frmrs(device, &pool->key,
&handle, 1);
if (err)
return err;
spin_lock(&pool->lock);
}
} else {
handle = pop_handle_from_queue_locked(&pool->queue);
spin_unlock(&pool->lock);
}
pool->in_use++;
if (pool->in_use > pool->max_in_use)
pool->max_in_use = pool->in_use;
spin_unlock(&pool->lock);
mr->frmr.pool = pool;
mr->frmr.handle = handle;
@@ -374,6 +379,9 @@ int ib_frmr_pool_push(struct ib_device *device, struct ib_mr *mr)
if (pool->queue.ci == 0)
schedule_aging = true;
ret = push_handle_to_queue_locked(&pool->queue, mr->frmr.handle);
if (ret == 0)
pool->in_use--;
spin_unlock(&pool->lock);
if (ret == 0 && schedule_aging)

3
drivers/infiniband/core/frmr_pools.h
View File

@@ -42,6 +42,9 @@ struct ib_frmr_pool {
struct delayed_work aging_work;
struct ib_device *device;
u32 max_in_use;
u32 in_use;
};
struct ib_frmr_pools {