diff options
| author | Tony Luck <tony.luck@intel.com> | 2025-05-05 20:38:17 +0300 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2025-05-12 16:43:16 +0300 |
| commit | b9020bdb9f76b58117f9902db3047693fd12b11b (patch) | |
| tree | 199390347bef9841b4992418b1f885f5b9ab1d57 /include/linux | |
| parent | fec2686d4d94f91056e510c541a76c192a45a7a0 (diff) | |
| download | linux-b9020bdb9f76b58117f9902db3047693fd12b11b.tar.xz | |
ACPI: MRRM: Minimal parse of ACPI MRRM table
The resctrl file system code needs to know how many region tags
are supported. Parse the ACPI MRRM table and save the max_mem_region
value.
Provide a function for resctrl to collect that value.
Signed-off-by: Tony Luck <tony.luck@intel.com>
Link: https://patch.msgid.link/20250505173819.419271-2-tony.luck@intel.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/acpi.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/acpi.h b/include/linux/acpi.h index 3f2e93ed9730..c409f4cecb09 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -772,6 +772,10 @@ int acpi_get_local_u64_address(acpi_handle handle, u64 *addr); int acpi_get_local_address(acpi_handle handle, u32 *addr); const char *acpi_get_subsystem_id(acpi_handle handle); +#ifdef CONFIG_ACPI_MRRM +int acpi_mrrm_max_mem_region(void); +#endif + #else /* !CONFIG_ACPI */ #define acpi_disabled 1 @@ -1092,6 +1096,11 @@ static inline acpi_handle acpi_get_processor_handle(int cpu) return NULL; } +static inline int acpi_mrrm_max_mem_region(void) +{ + return -ENOENT; +} + #endif /* !CONFIG_ACPI */ #ifdef CONFIG_ACPI_HMAT |