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support acpi firmware performance data (FPDT)

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Prefer firmware-provided performance data over loader-exported ones; if
ACPI data is available, always use it, otherwise try to read the loader
data.

The firmware-provided variables start at the time the first EFI image
is executed and end when the operating system exits the boot services;
the (loader) time calculated in systemd-analyze increases.
This commit is contained in:
Kay Sievers
2013-09-24 15:43:41 +02:00
parent 036ae95ac4
commit c51d84dc09
13 changed files with 389 additions and 100 deletions
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src/boot/boot-efi.c
+1 -1
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@@ -174,7 +174,7 @@ int boot_info_query(struct boot_info *info) {
efi_get_variable_string(EFI_VENDOR_LOADER, "LoaderFirmwareInfo", &info->fw_info);
efi_get_variable_string(EFI_VENDOR_LOADER, "LoaderImageIdentifier", &info->loader_image_path);
tilt_slashes(info->loader_image_path);
efi_get_loader_device_part_uuid(&info->loader_part_uuid);
efi_loader_get_device_part_uuid(&info->loader_part_uuid);
boot_loader_read_entries(info);
efi_get_variable_string(EFI_VENDOR_LOADER, "LoaderEntrySelected", &loader_active);