diff options
| author | Colin Foster <colin.foster@in-advantage.com> | 2022-02-13 11:12:54 -0800 |
|---|---|---|
| committer | Vladimir Oltean <vladimir.oltean@nxp.com> | 2022-05-04 15:25:01 +0200 |
| commit | beaec23fe22b3c394c8a05cd369f9e8c385004a2 (patch) | |
| tree | f3718623dc55fdac6a7195ad872f087fdfccd1f8 /include | |
| parent | a388bbb107129cb38306513d3748f63f6e362527 (diff) | |
net: mscc: ocelot: use bulk reads for stats
Create and utilize bulk regmap reads instead of single access for gathering
stats. The background reading of statistics happens frequently, and over
a few contiguous memory regions.
High speed PCIe buses and MMIO access will probably see negligible
performance increase. Lower speed buses like SPI and I2C could see
significant performance increase, since the bus configuration and register
access times account for a large percentage of data transfer time.
Signed-off-by: Colin Foster <colin.foster@in-advantage.com>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Tested-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
(cherry picked from commit d87b1c08f38a2ce40cf559df36c107a2e6c16a8f)
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/soc/mscc/ocelot.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/soc/mscc/ocelot.h b/include/soc/mscc/ocelot.h index 60990e049a12..b3a57bc3e066 100644 --- a/include/soc/mscc/ocelot.h +++ b/include/soc/mscc/ocelot.h @@ -537,6 +537,13 @@ struct ocelot_stat_layout { char name[ETH_GSTRING_LEN]; }; +struct ocelot_stats_region { + struct list_head node; + u32 offset; + int count; + u32 *buf; +}; + enum ocelot_tag_prefix { OCELOT_TAG_PREFIX_DISABLED = 0, OCELOT_TAG_PREFIX_NONE, @@ -676,6 +683,7 @@ struct ocelot { struct regmap_field *regfields[REGFIELD_MAX]; const u32 *const *map; const struct ocelot_stat_layout *stats_layout; + struct list_head stats_regions; unsigned int num_stats; u32 pool_size[OCELOT_SB_NUM][OCELOT_SB_POOL_NUM]; |