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| author | Aharon Landau <aharonl@nvidia.com> | 2021-10-08 15:24:29 +0300 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@nvidia.com> | 2021-10-12 12:48:04 -0300 |
| commit | 13f30b0fa0a9fa4f713edbb262f2e451886ce242 (patch) | |
| tree | ed373dd79b7e588fda7d3640200915c69d344864 /include/rdma | |
| parent | 3eea40d4749b6e236d79a7c24ba33f3078b1f7e9 (diff) | |
| download | linux-13f30b0fa0a9fa4f713edbb262f2e451886ce242.tar.gz linux-13f30b0fa0a9fa4f713edbb262f2e451886ce242.tar.bz2 linux-13f30b0fa0a9fa4f713edbb262f2e451886ce242.zip | |
RDMA/counter: Add a descriptor in struct rdma_hw_stats
Add a counter statistic descriptor structure in rdma_hw_stats. In addition
to the counter name, more meta-information will be added. This code
extension is needed for optional-counter support in the following patches.
Link: https://lore.kernel.org/r/20211008122439.166063-4-markzhang@nvidia.com
Signed-off-by: Aharon Landau <aharonl@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Mark Zhang <markzhang@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'include/rdma')
| -rw-r--r-- | include/rdma/ib_verbs.h | 21 |
1 files changed, 15 insertions, 6 deletions
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h index 4b50d9a3018a..aa1e1029b736 100644 --- a/include/rdma/ib_verbs.h +++ b/include/rdma/ib_verbs.h @@ -546,6 +546,14 @@ enum ib_port_speed { }; /** + * struct rdma_stat_desc + * @name - The name of the counter + */ +struct rdma_stat_desc { + const char *name; +}; + +/** * struct rdma_hw_stats * @lock - Mutex to protect parallel write access to lifespan and values * of counters, which are 64bits and not guaranteeed to be written @@ -555,8 +563,8 @@ enum ib_port_speed { * should be before being updated again. Stored in jiffies, defaults * to 10 milliseconds, drivers can override the default be specifying * their own value during their allocation routine. - * @name - Array of pointers to static names used for the counters in - * directory. + * @descs - Array of pointers to static descriptors used for the counters + * in directory. * @num_counters - How many hardware counters there are. If name is * shorter than this number, a kernel oops will result. Driver authors * are encouraged to leave BUILD_BUG_ON(ARRAY_SIZE(@name) < num_counters) @@ -568,7 +576,7 @@ struct rdma_hw_stats { struct mutex lock; /* Protect lifespan and values[] */ unsigned long timestamp; unsigned long lifespan; - const char * const *names; + const struct rdma_stat_desc *descs; int num_counters; u64 value[]; }; @@ -577,12 +585,12 @@ struct rdma_hw_stats { /** * rdma_alloc_hw_stats_struct - Helper function to allocate dynamic struct * for drivers. - * @names - Array of static const char * + * @descs - Array of static descriptors * @num_counters - How many elements in array * @lifespan - How many milliseconds between updates */ static inline struct rdma_hw_stats *rdma_alloc_hw_stats_struct( - const char * const *names, int num_counters, + const struct rdma_stat_desc *descs, int num_counters, unsigned long lifespan) { struct rdma_hw_stats *stats; @@ -591,7 +599,8 @@ static inline struct rdma_hw_stats *rdma_alloc_hw_stats_struct( GFP_KERNEL); if (!stats) return NULL; - stats->names = names; + + stats->descs = descs; stats->num_counters = num_counters; stats->lifespan = msecs_to_jiffies(lifespan); |