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authorColin Foster <colin.foster@in-advantage.com>2022-02-13 22:12:54 +0300
committerDavid S. Miller <davem@davemloft.net>2022-02-14 16:24:29 +0300
commitd87b1c08f38a2ce40cf559df36c107a2e6c16a8f (patch)
tree4530de8bf3ffd9692c9285a04b1db11feedaa0c9 /include/soc
parent40f3a5c81555880a437dfd3301826074dff18138 (diff)
downloadlinux-d87b1c08f38a2ce40cf559df36c107a2e6c16a8f.tar.xz
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>
Diffstat (limited to 'include/soc')
-rw-r--r--include/soc/mscc/ocelot.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/include/soc/mscc/ocelot.h b/include/soc/mscc/ocelot.h
index 6687ba35eaf3..cacb103e4bad 100644
--- a/include/soc/mscc/ocelot.h
+++ b/include/soc/mscc/ocelot.h
@@ -540,6 +540,13 @@ 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,
@@ -671,6 +678,7 @@ 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];