hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

x86/intel_rdt: Introduce test to determine if closid is in use 

During CAT feature discovery the capacity bitmasks (CBMs) associated
with all the classes of service are initialized to all ones, even if the
class of service is not in use. Introduce a test that can be used to
determine if a class of service is in use. This test enables code
interested in parsing the CBMs to know if its values are meaningful or
can be ignored.

Temporarily mark the function as unused to silence compile warnings
until it is used.

Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: fenghua.yu@intel.com
Cc: tony.luck@intel.com
Cc: vikas.shivappa@linux.intel.com
Cc: gavin.hindman@intel.com
Cc: jithu.joseph@intel.com
Cc: dave.hansen@intel.com
Cc: hpa@zytor.com
Link: https://lkml.kernel.org/r/798f8d89cd9b12df492d48c14bdc8ee3b39b1c6f.1529706536.git.reinette.chatre@intel.com
This commit is contained in:
Reinette Chatre 2018-06-22 15:41:57 -07:00 committed by Thomas Gleixner
parent d48d7a57f7
commit 0b9aa65626
1 changed files with 12 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
arch/x86/kernel/cpu/intel_rdt_rdtgroup.c
View File

@ -126,6 +126,18 @@ static void closid_free(int closid)
closid_free_map |= 1 << closid;
}
/**
* closid_allocated - test if provided closid is in use
* @closid: closid to be tested
*
* Return: true if @closid is currently associated with a resource group,
* false if @closid is free
*/
static bool __attribute__ ((unused)) closid_allocated(unsigned int closid)
{
return (closid_free_map & (1 << closid)) == 0;
}
/**
* rdtgroup_mode_by_closid - Return mode of resource group with closid
* @closid: closid if the resource group