Commit 28f07af4 authored by Artem Bityutskiy's avatar Artem Bityutskiy Committed by yingbao jia
Browse files

intel_idle: add Emerald Rapids Xeon support 

mainline inclusion
from mainline-6.3
commit 74528edf
category: feature
feature: intel idle EMR support
bugzilla: https://gitee.com/openeuler/intel-kernel/issues/I7262L
CVE: NA
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=74528edfbc664f9d2c927c4e5a44f1285598ed0f



Intel-SIG: commit 74528edf intel_idle: add Emerald Rapids Xeon support
Backport for intel idle EMR support

-------------------------------------------------

Emerald Rapids (EMR) is the next Intel Xeon processor after Sapphire
Rapids (SPR).

EMR C-states are the same as SPR C-states, and we expect that EMR
C-state characteristics (latency and target residency) will be the
same as in SPR. Therefore, add EMR support by using SPR C-states table.

Signed-off-by: default avatarArtem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: default avataryingbao jia <yingbao.jia@intel.com>
parent 8bfaf346

drivers/idle/intel_idle.c

+2 −0
Original line number Diff line number Diff line
@@ -1231,6 +1231,7 @@ static const struct x86_cpu_id intel_idle_ids[] __initconst = { 
	X86_MATCH_INTEL_FAM6_MODEL(ICELAKE_X,		&idle_cpu_icx),

	X86_MATCH_INTEL_FAM6_MODEL(ICELAKE_D,		&idle_cpu_icx),

	X86_MATCH_INTEL_FAM6_MODEL(SAPPHIRERAPIDS_X,	&idle_cpu_spr),

	X86_MATCH_INTEL_FAM6_MODEL(EMERALDRAPIDS_X,	&idle_cpu_spr),

	X86_MATCH_INTEL_FAM6_MODEL(XEON_PHI_KNL,	&idle_cpu_knl),

	X86_MATCH_INTEL_FAM6_MODEL(XEON_PHI_KNM,	&idle_cpu_knl),

	X86_MATCH_INTEL_FAM6_MODEL(ATOM_GOLDMONT,	&idle_cpu_bxt),
@@ -1644,6 +1645,7 @@ static void __init intel_idle_init_cstates_icpu(struct cpuidle_driver *drv) 
		skx_idle_state_table_update();

		break;

	case INTEL_FAM6_SAPPHIRERAPIDS_X:

	case INTEL_FAM6_EMERALDRAPIDS_X:

		spr_idle_state_table_update();

		break;

	}