diff options
| -rw-r--r-- | drivers/firmware/arm_scmi/Kconfig | 14 | ||||
| -rw-r--r-- | drivers/firmware/arm_scmi/common.h | 10 | ||||
| -rw-r--r-- | drivers/firmware/arm_scmi/driver.c | 2 |
3 files changed, 26 insertions, 0 deletions
diff --git a/drivers/firmware/arm_scmi/Kconfig b/drivers/firmware/arm_scmi/Kconfig index aa5842be19b2..f35784d0a8dd 100644 --- a/drivers/firmware/arm_scmi/Kconfig +++ b/drivers/firmware/arm_scmi/Kconfig @@ -55,6 +55,20 @@ config ARM_SCMI_RAW_MODE_SUPPORT_COEX operate normally, thing which could make an SCMI test suite using the SCMI Raw mode support unreliable. If unsure, say N. +config ARM_SCMI_DEBUG_COUNTERS + bool "Enable SCMI communication debug metrics tracking" + select ARM_SCMI_NEED_DEBUGFS + depends on DEBUG_FS + default n + help + Enables tracking of some key communication metrics for debug + purposes. It may track metrics like how many messages were sent + or received, were there any failures, what kind of failures, ..etc. + + Enable this option to create a new debugfs directory which contains + such useful debug counters. This can be helpful for debugging and + SCMI monitoring. + config ARM_SCMI_HAVE_TRANSPORT bool help diff --git a/drivers/firmware/arm_scmi/common.h b/drivers/firmware/arm_scmi/common.h index 4b8c5250cdb5..d414b0a43b3b 100644 --- a/drivers/firmware/arm_scmi/common.h +++ b/drivers/firmware/arm_scmi/common.h @@ -301,6 +301,16 @@ extern const struct scmi_desc scmi_optee_desc; void scmi_rx_callback(struct scmi_chan_info *cinfo, u32 msg_hdr, void *priv); +enum debug_counters { + SCMI_DEBUG_COUNTERS_LAST +}; + +static inline void scmi_inc_count(atomic_t *arr, int stat) +{ + if (IS_ENABLED(CONFIG_ARM_SCMI_DEBUG_COUNTERS)) + atomic_inc(&arr[stat]); +} + enum scmi_bad_msg { MSG_UNEXPECTED = -1, MSG_INVALID = -2, diff --git a/drivers/firmware/arm_scmi/driver.c b/drivers/firmware/arm_scmi/driver.c index 56a93d20bf23..958b2ac92050 100644 --- a/drivers/firmware/arm_scmi/driver.c +++ b/drivers/firmware/arm_scmi/driver.c @@ -117,12 +117,14 @@ struct scmi_protocol_instance { * @name: Name of this SCMI instance * @type: Type of this SCMI instance * @is_atomic: Flag to state if the transport of this instance is atomic + * @counters: An array of atomic_c's used for tracking statistics (if enabled) */ struct scmi_debug_info { struct dentry *top_dentry; const char *name; const char *type; bool is_atomic; + atomic_t counters[SCMI_DEBUG_COUNTERS_LAST]; }; /** |