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| author | Jeremy Linton <jeremy.linton@arm.com> | 2019-10-14 19:56:01 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-10-17 13:47:28 -0700 |
| commit | 1edabfff9d2d7607b2df7b4122315bcb420567df (patch) | |
| tree | cccf626721bf745b42bb02863b665fd44cf6ae74 /include | |
| parent | da536d06b60ac9472dedfc3f9e4675d03db45c9e (diff) | |
| download | linux-stable-1edabfff9d2d7607b2df7b4122315bcb420567df.tar.gz linux-stable-1edabfff9d2d7607b2df7b4122315bcb420567df.tar.bz2 linux-stable-1edabfff9d2d7607b2df7b4122315bcb420567df.zip | |
ACPI/PPTT: Add support for ACPI 6.3 thread flag
Commit bbd1b70639f785a970d998f35155c713f975e3ac upstream.
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>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Sasha Levin <sashal@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; |