diff options
| author | Reinette Chatre <reinette.chatre@intel.com> | 2020-05-05 15:36:15 -0700 |
|---|---|---|
| committer | Borislav Petkov <bp@suse.de> | 2020-05-06 17:58:08 +0200 |
| commit | 923f3a2b48bdccb6a1d1f0dd48de03de7ad936d9 (patch) | |
| tree | a16d84bf2dd59db8579605cf7c6be7875eacfcf7 /arch/x86/kernel/cpu/common.c | |
| parent | f0d339db56478e3bcd98d5e985d3d69cacf27549 (diff) | |
x86/resctrl: Query LLC monitoring properties once during boot
Cache and memory bandwidth monitoring are features that are part of
x86 CPU resource control that is supported by the resctrl subsystem.
The monitoring properties are obtained via CPUID from every CPU
and only used within the resctrl subsystem where the properties are
only read from boot_cpu_data.
Obtain the monitoring properties once, placed in boot_cpu_data, via the
->c_bsp_init() helpers of the vendors that support X86_FEATURE_CQM_LLC.
Suggested-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/6d74a6ac3e69f4b7a8b4115835f9455faf0f468d.1588715690.git.reinette.chatre@intel.com
Diffstat (limited to 'arch/x86/kernel/cpu/common.c')
| -rw-r--r-- | arch/x86/kernel/cpu/common.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c index 556a96d05a6c..d07809286b95 100644 --- a/arch/x86/kernel/cpu/common.c +++ b/arch/x86/kernel/cpu/common.c @@ -56,7 +56,6 @@ #include <asm/intel-family.h> #include <asm/cpu_device_id.h> #include <asm/uv/uv.h> -#include <asm/resctrl.h> #include "cpu.h" @@ -922,7 +921,6 @@ void get_cpu_cap(struct cpuinfo_x86 *c) init_scattered_cpuid_features(c); init_speculation_control(c); - resctrl_cpu_detect(c); /* * Clear/Set all flags overridden by options, after probe. |