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| author |   Jeremy Linton <jeremy.linton@arm.com> | 2019-08-08 15:40:06 -0500 |
|---|---|---|
| committer |   Will Deacon <will@kernel.org> | 2019-08-12 12:59:15 +0100 |
| commit | bbd1b70639f785a970d998f35155c713f975e3ac (patch) | |
| tree | 900720fcc2f594cd91330c9005ce3b6a58e89bf0 /include | |
| parent | Linux 5.3-rc3 (diff) | |
| download | linux-dev-bbd1b70639f785a970d998f35155c713f975e3ac.tar.xz linux-dev-bbd1b70639f785a970d998f35155c713f975e3ac.zip | |
ACPI/PPTT: Add support for ACPI 6.3 thread flag
ACPI 6.3 adds a flag to the CPU node to indicate whether
the given PE is a thread. Add a function to return that
information for a given linux logical CPU.
Signed-off-by: Jeremy Linton <jeremy.linton@arm.com>
Reviewed-by: Sudeep Holla <sudeep.holla@arm.com>
Reviewed-by: Robert Richter <rrichter@marvell.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/acpi.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/acpi.h b/include/linux/acpi.h index 9426b9aaed86..9d0e20a2ac83 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -1302,11 +1302,16 @@ static inline int lpit_read_residency_count_address(u64 *address) #endif #ifdef CONFIG_ACPI_PPTT +int acpi_pptt_cpu_is_thread(unsigned int cpu); int find_acpi_cpu_topology(unsigned int cpu, int level); int find_acpi_cpu_topology_package(unsigned int cpu); int find_acpi_cpu_topology_hetero_id(unsigned int cpu); int find_acpi_cpu_cache_topology(unsigned int cpu, int level); #else +static inline int acpi_pptt_cpu_is_thread(unsigned int cpu) +{ + return -EINVAL; +} static inline int find_acpi_cpu_topology(unsigned int cpu, int level) { return -EINVAL; |