diff options
| author | James Morse <james.morse@arm.com> | 2025-11-19 12:22:56 +0000 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2025-11-19 18:34:23 +0000 |
| commit | 823e7c3712c584641b4ef890a8af34884c677197 (patch) | |
| tree | f813f8ae03664d0e9291f6d514b0a0791d25acda /drivers/resctrl/mpam_internal.h | |
| parent | c891bae66423bc69a680ca1de34940132e2c8ace (diff) | |
arm_mpam: Add mpam_msmon_read() to read monitor value
Reading a monitor involves configuring what you want to monitor, and
reading the value. Components made up of multiple MSC may need values
from each MSC. MSCs may take time to configure, returning 'not ready'.
The maximum 'not ready' time should have been provided by firmware.
Add mpam_msmon_read() to hide all this. If (one of) the MSC returns
not ready, then wait the full timeout value before trying again.
CC: Shanker Donthineni <sdonthineni@nvidia.com>
Cc: Shaopeng Tan (Fujitsu) <tan.shaopeng@fujitsu.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Reviewed-by: Gavin Shan <gshan@redhat.com>
Reviewed-by: Shaopeng Tan <tan.shaopeng@jp.fujitsu.com>
Reviewed-by: Fenghua Yu <fenghuay@nvidia.com>
Tested-by: Shaopeng Tan <tan.shaopeng@jp.fujitsu.com>
Tested-by: Peter Newman <peternewman@google.com>
Tested-by: Carl Worth <carl@os.amperecomputing.com>
Tested-by: Gavin Shan <gshan@redhat.com>
Tested-by: Zeng Heng <zengheng4@huawei.com>
Tested-by: Hanjun Guo <guohanjun@huawei.com>
Signed-off-by: James Morse <james.morse@arm.com>
Signed-off-by: Ben Horgan <ben.horgan@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'drivers/resctrl/mpam_internal.h')
| -rw-r--r-- | drivers/resctrl/mpam_internal.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/resctrl/mpam_internal.h b/drivers/resctrl/mpam_internal.h index 8bbc67df6d97..12f0a5b7f39e 100644 --- a/drivers/resctrl/mpam_internal.h +++ b/drivers/resctrl/mpam_internal.h @@ -186,6 +186,22 @@ struct mpam_props { #define mpam_set_feature(_feat, x) set_bit(_feat, (x)->features) #define mpam_clear_feature(_feat, x) clear_bit(_feat, (x)->features) +/* The values for MSMON_CFG_MBWU_FLT.RWBW */ +enum mon_filter_options { + COUNT_BOTH = 0, + COUNT_WRITE = 1, + COUNT_READ = 2, +}; + +struct mon_cfg { + u16 mon; + u8 pmg; + bool match_pmg; + bool csu_exclude_clean; + u32 partid; + enum mon_filter_options opts; +}; + struct mpam_class { /* mpam_components in this class */ struct list_head components; @@ -329,6 +345,9 @@ void mpam_disable(struct work_struct *work); int mpam_apply_config(struct mpam_component *comp, u16 partid, struct mpam_config *cfg); +int mpam_msmon_read(struct mpam_component *comp, struct mon_cfg *ctx, + enum mpam_device_features, u64 *val); + int mpam_get_cpumask_from_cache_id(unsigned long cache_id, u32 cache_level, cpumask_t *affinity); |