From 4ffa3c977b5da2907eb294dc6d0259a02f2284aa Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Mon, 10 Apr 2017 16:52:32 +0200 Subject: x86/intel_rdt: Add cpus_list rdtgroup file The resource control filesystem provides only a bitmask based cpus file for assigning CPUs to a resource group. That's cumbersome with large cpumasks and non-intuitive when modifying the file from the command line. Range based cpu lists are commonly used along with bitmask based cpu files in various subsystems throughout the kernel. Add 'cpus_list' file which is CPU range based. # cd /sys/fs/resctrl/ # echo 1-10 > krava/cpus_list # cat krava/cpus_list 1-10 # cat krava/cpus 0007fe # cat cpus fffff9 # cat cpus_list 0,3-23 [ tglx: Massaged changelog and replaced "bitmask lists" by "CPU ranges" ] Signed-off-by: Jiri Olsa Cc: Fenghua Yu Cc: Peter Zijlstra Cc: Peter Zijlstra Cc: Mike Galbraith Cc: Shaohua Li Link: http://lkml.kernel.org/r/20170410145232.GF25354@krava Signed-off-by: Thomas Gleixner --- Documentation/x86/intel_rdt_ui.txt | 3 +++ 1 file changed, 3 insertions(+) (limited to 'Documentation/x86') diff --git a/Documentation/x86/intel_rdt_ui.txt b/Documentation/x86/intel_rdt_ui.txt index 3ea198460469..a1ace91c4b86 100644 --- a/Documentation/x86/intel_rdt_ui.txt +++ b/Documentation/x86/intel_rdt_ui.txt @@ -59,6 +59,9 @@ There are three files associated with each group: given to the default (root) group. You cannot remove CPUs from the default group. +"cpus_list": One or more CPU ranges of logical CPUs assigned to this + group. Same rules apply like for the "cpus" file. + "schemata": A list of all the resources available to this group. Each resource has its own line and format - see below for details. -- cgit v1.2.3