[patch net-next RFC 05/12] mlxsw: core: Set different thermal polling time based on bus type
From: Vadim Pasternak <hidden>
Date: 2018-06-26 10:21:12
Subsystem:
mellanox ethernet switch drivers, networking drivers, the rest · Maintainers:
Ido Schimmel, Petr Machata, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Use different thermal monitoring based on bus type. For I2C bus time is set to 20 seconds, while for PCIe 1 second polling interval is used. Signed-off-by: Vadim Pasternak <redacted> Acked-by: Jiri Pirko <redacted> --- drivers/net/ethernet/mellanox/mlxsw/core_thermal.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlxsw/core_thermal.c b/drivers/net/ethernet/mellanox/mlxsw/core_thermal.c
index d866c98..152591d8 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/core_thermal.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/core_thermal.c@@ -41,6 +41,7 @@ #include "core.h" #define MLXSW_THERMAL_POLL_INT 1000 /* ms */ +#define MLXSW_THERMAL_SLOW_POLL_INT 20000 /* ms */ #define MLXSW_THERMAL_MAX_TEMP 110000 /* 110C */ #define MLXSW_THERMAL_MAX_STATE 10 #define MLXSW_THERMAL_MAX_DUTY 255
@@ -95,6 +96,7 @@ struct mlxsw_thermal { struct mlxsw_core *core; const struct mlxsw_bus_info *bus_info; struct thermal_zone_device *tzdev; + int polling_delay; struct thermal_cooling_device *cdevs[MLXSW_MFCR_PWMS_MAX]; struct mlxsw_thermal_trip trips[MLXSW_THERMAL_NUM_TRIPS]; enum thermal_device_mode mode;
@@ -190,7 +192,7 @@ static int mlxsw_thermal_set_mode(struct thermal_zone_device *tzdev, mutex_lock(&tzdev->lock); if (mode == THERMAL_DEVICE_ENABLED) - tzdev->polling_delay = MLXSW_THERMAL_POLL_INT; + tzdev->polling_delay = thermal->polling_delay; else tzdev->polling_delay = 0;
@@ -397,13 +399,18 @@ int mlxsw_thermal_init(struct mlxsw_core *core, } } + if (bus_info->low_frequency) + thermal->polling_delay = MLXSW_THERMAL_SLOW_POLL_INT; + else + thermal->polling_delay = MLXSW_THERMAL_POLL_INT; + thermal->tzdev = thermal_zone_device_register("mlxsw", MLXSW_THERMAL_NUM_TRIPS, MLXSW_THERMAL_TRIP_MASK, thermal, &mlxsw_thermal_ops, NULL, 0, - MLXSW_THERMAL_POLL_INT); + thermal->polling_delay); if (IS_ERR(thermal->tzdev)) { err = PTR_ERR(thermal->tzdev); dev_err(dev, "Failed to register thermal zone\n");
--
2.1.4