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8a4339fe24
Add PMU support for per-function engine activity stats.
per-function engine activity is enabled when VF's are enabled.
If 2 VF's are enabled, then the applicable function values are
0 - PF engine activity
1 - VF1 engine activity
2 - VF2 engine activity
This can be read from perf tool as shown below
./perf stat -e xe_<bdf>/engine-active-ticks,gt=0,engine_class=0,
engine_instance=0,function=1/ -I 1000
v2: fix documentation (Umesh)
remove global for functions (Lucas, Michal)
v3: fix commit message
move function_id checks to same place (Michal)
v4: fix comment (Umesh)
Cc: Michal Wajdeczko <michal.wajdeczko@intel.com>
Signed-off-by: Riana Tauro <riana.tauro@intel.com>
Reviewed-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250311071759.2117211-3-riana.tauro@intel.com
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.