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| author |   Philip Radford <philip.radford@arm.com> | 2025-06-30 10:55:41 +0000 |
|---|---|---|
| committer |   Sudeep Holla <sudeep.holla@arm.com> | 2025-07-03 16:14:31 +0100 |
| commit | 555e9174ef06b7bfc54a3127a8d8fc47d55d04f4 (patch) | |
| tree | 994dd4207940a9b8a581b6eda4d8c69922e30f33 | |
| parent | firmware: arm_scmi: Fix up turbo frequencies selection (diff) | |
| download | linux-rng-555e9174ef06b7bfc54a3127a8d8fc47d55d04f4.tar.xz linux-rng-555e9174ef06b7bfc54a3127a8d8fc47d55d04f4.zip | |
firmware: arm_scmi: Add support for debug counter decrement
Introduce a new `scmi_dec_count` helper to complement the existing
`scmi_inc_count`, allowing controlled decrement of SCMI debug counters.
This provides symmetry in debug counter management and enables
accurate tracking of counters that may both increase and decrease,
such as those used for in-flight message tracking.
Only active when CONFIG_ARM_SCMI_DEBUG_COUNTERS is enabled.
Reviewed-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Philip Radford <philip.radford@arm.com>
Message-Id: <20250630105544.531723-2-philip.radford@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
| -rw-r--r-- | drivers/firmware/arm_scmi/common.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/firmware/arm_scmi/common.h b/drivers/firmware/arm_scmi/common.h index dab758c5fdea..c6495c4a0e8a 100644 --- a/drivers/firmware/arm_scmi/common.h +++ b/drivers/firmware/arm_scmi/common.h @@ -314,6 +314,12 @@ static inline void scmi_inc_count(atomic_t *arr, int stat) atomic_inc(&arr[stat]); } +static inline void scmi_dec_count(atomic_t *arr, int stat) +{ + if (IS_ENABLED(CONFIG_ARM_SCMI_DEBUG_COUNTERS)) + atomic_dec(&arr[stat]); +} + enum scmi_bad_msg { MSG_UNEXPECTED = -1, MSG_INVALID = -2, |