diff options
| author | Babu Moger <babu.moger@amd.com> | 2025-09-06 00:34:08 +0300 |
|---|---|---|
| committer | Borislav Petkov (AMD) <bp@alien8.de> | 2025-09-15 13:09:30 +0300 |
| commit | faebbc58cde9d8f6050ac152c34c88195ed4abaa (patch) | |
| tree | 547049b9c165a5f8996d4bb6d6de9dc06e67c798 /include/linux | |
| parent | 13390861b426e936db20d675804a5b405622bc79 (diff) | |
| download | linux-faebbc58cde9d8f6050ac152c34c88195ed4abaa.tar.xz | |
x86/resctrl: Add support to enable/disable AMD ABMC feature
Add the functionality to enable/disable the AMD ABMC feature.
The AMD ABMC feature is enabled by setting enabled bit(0) in the
L3_QOS_EXT_CFG MSR. When the state of ABMC is changed, the MSR needs to be
updated on all the logical processors in the QOS Domain.
Hardware counters will reset when ABMC state is changed.
[ bp: Massage commit message. ]
Signed-off-by: Babu Moger <babu.moger@amd.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Reinette Chatre <reinette.chatre@intel.com>
Link: https://lore.kernel.org/cover.1757108044.git.babu.moger@amd.com
Link: https://bugzilla.kernel.org/show_bug.cgi?id=206537 # [2]
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/resctrl.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/include/linux/resctrl.h b/include/linux/resctrl.h index eb80cc233be4..919806122c50 100644 --- a/include/linux/resctrl.h +++ b/include/linux/resctrl.h @@ -445,6 +445,26 @@ static inline u32 resctrl_get_config_index(u32 closid, bool resctrl_arch_get_cdp_enabled(enum resctrl_res_level l); int resctrl_arch_set_cdp_enabled(enum resctrl_res_level l, bool enable); +/** + * resctrl_arch_mbm_cntr_assign_enabled() - Check if MBM counter assignment + * mode is enabled. + * @r: Pointer to the resource structure. + * + * Return: + * true if the assignment mode is enabled, false otherwise. + */ +bool resctrl_arch_mbm_cntr_assign_enabled(struct rdt_resource *r); + +/** + * resctrl_arch_mbm_cntr_assign_set() - Configure the MBM counter assignment mode. + * @r: Pointer to the resource structure. + * @enable: Set to true to enable, false to disable the assignment mode. + * + * Return: + * 0 on success, < 0 on error. + */ +int resctrl_arch_mbm_cntr_assign_set(struct rdt_resource *r, bool enable); + /* * Update the ctrl_val and apply this config right now. * Must be called on one of the domain's CPUs. |