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| author | Nate DeSimone <nathaniel.l.desimone@intel.com> | 2026-03-24 16:14:54 -0700 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2026-03-26 15:59:52 +0100 |
| commit | 8dcb4485e7672d3abe9fac03b843dff7bb8a1582 (patch) | |
| tree | 488e137e4a1212b108ef7b8a812b4650b5181a34 /tools/perf/scripts/python/stackcollapse.py | |
| parent | 9b776ddcf3236f860f81f12ba10864ce6e237ff9 (diff) | |
ACPI: FPDT: expose FBPT and S3PT subtables via sysfs
Add sysfs files at /sys/firmware/acpi/fpdt/FBPT and
/sys/firmware/acpi/fpdt/S3PT that expose the raw contents of the
FPDT subtables.
Note that /sys/firmware/acpi/tables/FPDT only provides the top level
table, not the subtables. Adding access to the subtables enables a
usage model similar to /sys/firmware/dmi/tables/DMI, allowing
userspace tools to interpret newer record types (e.g. String Event
Records, Microcontroller Boot Performance Data Records, etc.) defined
in recent ACPI specifications [1] without requiring kernel changes.
Link: https://uefi.org/specs/ACPI/6.6/05_ACPI_Software_Programming_Model.html#performance-event-record-types [1]
Signed-off-by: Nate DeSimone <nathaniel.l.desimone@intel.com>
[ rjw: Changelog edits ]
Link: https://patch.msgid.link/20260324231456.701-2-nathaniel.l.desimone@intel.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'tools/perf/scripts/python/stackcollapse.py')
0 files changed, 0 insertions, 0 deletions