diff options
| author | James Clark <james.clark@arm.com> | 2024-07-22 11:11:53 +0100 |
|---|---|---|
| committer | Suzuki K Poulose <suzuki.poulose@arm.com> | 2024-08-20 15:02:37 +0100 |
| commit | acb0184fe9bca3bb7103dadc76ba9d38c969ca86 (patch) | |
| tree | 869668fe6abea7ed68d9e08e20d2a533c08a36ad /include/linux/coresight.h | |
| parent | eda1d11979c03f0104ca59ec4a0478cd52fa20de (diff) | |
coresight: Move struct coresight_trace_id_map to common header
The trace ID maps will need to be created and stored by the core and
Perf code so move the definition up to the common header.
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Reviewed-by: Mike Leach <mike.leach@linaro.org>
Signed-off-by: James Clark <james.clark@arm.com>
Tested-by: Leo Yan <leo.yan@arm.com>
Tested-by: Ganapatrao Kulkarni <gankulkarni@os.amperecomputing.com>
Signed-off-by: James Clark <james.clark@linaro.org>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Link: https://lore.kernel.org/r/20240722101202.26915-12-james.clark@linaro.org
Diffstat (limited to 'include/linux/coresight.h')
| -rw-r--r-- | include/linux/coresight.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/include/linux/coresight.h b/include/linux/coresight.h index f09ace92176e..c16c61a8411d 100644 --- a/include/linux/coresight.h +++ b/include/linux/coresight.h @@ -218,6 +218,24 @@ struct coresight_sysfs_link { const char *target_name; }; +/* architecturally we have 128 IDs some of which are reserved */ +#define CORESIGHT_TRACE_IDS_MAX 128 + +/** + * Trace ID map. + * + * @used_ids: Bitmap to register available (bit = 0) and in use (bit = 1) IDs. + * Initialised so that the reserved IDs are permanently marked as + * in use. + * @pend_rel_ids: CPU IDs that have been released by the trace source but not + * yet marked as available, to allow re-allocation to the same + * CPU during a perf session. + */ +struct coresight_trace_id_map { + DECLARE_BITMAP(used_ids, CORESIGHT_TRACE_IDS_MAX); + DECLARE_BITMAP(pend_rel_ids, CORESIGHT_TRACE_IDS_MAX); +}; + /** * struct coresight_device - representation of a device as used by the framework * @pdata: Platform data with device connections associated to this device. |