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authorJeremy Linton <jeremy.linton@arm.com>2022-11-09 11:47:20 -0600
committerWill Deacon <will@kernel.org>2022-11-14 18:02:59 +0000
commitc2465f95c4e73af1a6564b00ebc9acc15485edf0 (patch)
tree926b34683c3dfb1ca1f8d3f34a49502ed22096df /Documentation/arm64/acpi_object_usage.rst
parenta8731264e5ce083eb761e5a6a8273db536743e9e (diff)
downloadlwn-c2465f95c4e73af1a6564b00ebc9acc15485edf0.tar.gz
lwn-c2465f95c4e73af1a6564b00ebc9acc15485edf0.zip
ACPI: Enable FPDT on arm64
FPDT provides some boot timing records useful for analyzing parts of the UEFI boot stack. Given the existing code works on arm64, and allows reading the values without utilizing /dev/mem it seems like a good idea to turn it on. Signed-off-by: Jeremy Linton <jeremy.linton@arm.com> Acked-by: Sudeep Holla <sudeep.holla@arm.com> Link: https://lore.kernel.org/r/20221109174720.203723-1-jeremy.linton@arm.com Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'Documentation/arm64/acpi_object_usage.rst')
-rw-r--r--Documentation/arm64/acpi_object_usage.rst2
1 files changed, 1 insertions, 1 deletions
diff --git a/Documentation/arm64/acpi_object_usage.rst b/Documentation/arm64/acpi_object_usage.rst
index 0609da73970b..484ef9676653 100644
--- a/Documentation/arm64/acpi_object_usage.rst
+++ b/Documentation/arm64/acpi_object_usage.rst
@@ -163,7 +163,7 @@ FPDT Section 5.2.23 (signature == "FPDT")
**Firmware Performance Data Table**
- Optional, not currently supported.
+ Optional, useful for boot performance profiling.
GTDT Section 5.2.24 (signature == "GTDT")