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From: Stephane Eranian <eranian@google.com>
To: linux-kernel@vger.kernel.org
Cc: peterz@infradead.org, kim.phillips@amd.com, acme@redhat.com,
	jolsa@redhat.com, songliubraving@fb.com, mpe@ellerman.id.au,
	maddy@linux.ibm.com
Subject: [PATCH v3 02/13] x86/cpufeatures: add AMD Fam19h Branch Sampling feature
Date: Tue, 30 Nov 2021 17:02:06 -0800	[thread overview]
Message-ID: <20211201010217.886919-3-eranian@google.com> (raw)
In-Reply-To: <20211201010217.886919-1-eranian@google.com>

This patch adds a cpu feature for AMD Fam19h Branch Sampling feature as bit
31 of EBX on CPUID leaf function 0x80000008.

Signed-off-by: Stephane Eranian <eranian@google.com>
---
 arch/x86/include/asm/cpufeatures.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpufeatures.h
index d5b5f2ab87a0..e71443f93f04 100644
--- a/arch/x86/include/asm/cpufeatures.h
+++ b/arch/x86/include/asm/cpufeatures.h
@@ -315,6 +315,7 @@
 #define X86_FEATURE_AMD_SSBD		(13*32+24) /* "" Speculative Store Bypass Disable */
 #define X86_FEATURE_VIRT_SSBD		(13*32+25) /* Virtualized Speculative Store Bypass Disable */
 #define X86_FEATURE_AMD_SSB_NO		(13*32+26) /* "" Speculative Store Bypass is fixed in hardware. */
+#define X86_FEATURE_AMD_BRS		(13*32+31) /* Branch Sampling available */
 
 /* Thermal and Power Management Leaf, CPUID level 0x00000006 (EAX), word 14 */
 #define X86_FEATURE_DTHERM		(14*32+ 0) /* Digital Thermal Sensor */
-- 
2.34.0.rc2.393.gf8c9666880-goog


  parent reply	other threads:[~2021-12-01  1:02 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-12-01  1:02 [PATCH v3 00/13] perf/x86/amd: Add AMD Fam19h Branch Sampling support Stephane Eranian
2021-12-01  1:02 ` [PATCH v3 01/13] perf/core: add perf_clear_branch_entry_bitfields() helper Stephane Eranian
2021-12-01  1:02 ` Stephane Eranian [this message]
2021-12-01  1:02 ` [PATCH v3 03/13] perf/x86/amd: add AMD Fam19h Branch Sampling support Stephane Eranian
2021-12-01  4:02   ` kernel test robot
2021-12-01  4:02     ` kernel test robot
2021-12-01  8:08   ` kernel test robot
2021-12-01  8:08     ` kernel test robot
2021-12-01  1:02 ` [PATCH v3 04/13] perf/x86/amd: add branch-brs helper event for Fam19h BRS Stephane Eranian
2021-12-01  1:02 ` [PATCH v3 05/13] perf/x86/amd: enable branch sampling priv level filtering Stephane Eranian
2021-12-01  1:02 ` [PATCH v3 06/13] perf/x86/amd: add AMD branch sampling period adjustment Stephane Eranian
2021-12-01  1:02 ` [PATCH v3 07/13] perf/x86/amd: make Zen3 branch sampling opt-in Stephane Eranian
2021-12-01  1:02 ` [PATCH v3 08/13] ACPI: add perf low power callback Stephane Eranian
2021-12-01  6:14   ` kernel test robot
2021-12-01  6:14     ` kernel test robot
2021-12-01  1:02 ` [PATCH v3 09/13] perf/x86/amd: add idle hooks for branch sampling Stephane Eranian
2021-12-01  1:02 ` [PATCH v3 10/13] perf tools: add branch-brs as a new event Stephane Eranian
2021-12-01  1:02 ` [PATCH v3 11/13] perf tools: improve IBS error handling Stephane Eranian
2021-12-01 15:30   ` Kim Phillips
2021-12-01 20:40     ` Stephane Eranian
2021-12-01 23:05       ` Kim Phillips
2021-12-01  1:02 ` [PATCH v3 12/13] perf tools: improve error handling of AMD Branch Sampling Stephane Eranian
2021-12-01  1:02 ` [PATCH v3 13/13] perf report: add addr_from/addr_to sort dimensions Stephane Eranian

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