6.1-stable review patch. If anyone has any objections, please let me know.
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From: Chiara Meiohas cmeiohas@nvidia.com
[ Upstream commit 79195147644653ebffadece31a42181e4c48c07d ]
When invalidating an address range in mlx5, there is an optimization to do UMR operations in chunks. Previously, the invalidation counter was incorrectly updated for the same indexes within a chunk. Now, the invalidation counter is updated only when a chunk is complete and mlx5r_umr_update_xlt() is called. This ensures that the counter accurately represents the number of pages invalidated using UMR.
Fixes: a3de94e3d61e ("IB/mlx5: Introduce ODP diagnostic counters") Signed-off-by: Chiara Meiohas cmeiohas@nvidia.com Reviewed-by: Michael Guralnik michaelgur@nvidia.com Link: https://patch.msgid.link/560deb2433318e5947282b070c915f3c81fef77f.1741875692... Signed-off-by: Leon Romanovsky leon@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/infiniband/hw/mlx5/odp.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/drivers/infiniband/hw/mlx5/odp.c b/drivers/infiniband/hw/mlx5/odp.c index 87fbee8061003..89682fe0747ff 100644 --- a/drivers/infiniband/hw/mlx5/odp.c +++ b/drivers/infiniband/hw/mlx5/odp.c @@ -275,9 +275,6 @@ static bool mlx5_ib_invalidate_range(struct mmu_interval_notifier *mni, blk_start_idx = idx; in_block = 1; } - - /* Count page invalidations */ - invalidations += idx - blk_start_idx + 1; } else { u64 umr_offset = idx & umr_block_mask;
@@ -287,14 +284,19 @@ static bool mlx5_ib_invalidate_range(struct mmu_interval_notifier *mni, MLX5_IB_UPD_XLT_ZAP | MLX5_IB_UPD_XLT_ATOMIC); in_block = 0; + /* Count page invalidations */ + invalidations += idx - blk_start_idx + 1; } } } - if (in_block) + if (in_block) { mlx5r_umr_update_xlt(mr, blk_start_idx, idx - blk_start_idx + 1, 0, MLX5_IB_UPD_XLT_ZAP | MLX5_IB_UPD_XLT_ATOMIC); + /* Count page invalidations */ + invalidations += idx - blk_start_idx + 1; + }
mlx5_update_odp_stats(mr, invalidations, invalidations);