From: Janakarajan Natarajan <Janakarajan.Natarajan@amd.com>
To: linux-kernel@vger.kernel.org
Cc: Peter Zijlstra <peterz@infradead.org>, Ingo Molnar <mingo@redhat.com>,
        Arnaldo Carvalho de Melo <acme@kernel.org>,
        Alexander Shishkin <alexander.shishkin@linux.intel.com>,
        Borislav Petkov <bp@alien8.de>,
        Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>,
        Janakarajan Natarajan <Janakarajan.Natarajan@amd.com>
Subject: [PATCH 1/2] amd: uncore: Rename cpufeatures macro for cache counters
Date: Mon,  5 Jun 2017 11:13:18 -0500
Message-Id: <246e6f4dc54d8b9043b82baa09951dc90c2737e9.1496418338.git.Janakarajan.Natarajan@amd.com>
In-Reply-To: <cover.1496418338.git.Janakarajan.Natarajan@amd.com>
References: <cover.1496418338.git.Janakarajan.Natarajan@amd.com>
MIME-Version: 1.0
Content-Type: text/plain
SpamDiagnosticOutput: 1:99
SpamDiagnosticMetadata: NSPM
X-MS-Exchange-CrossTenant-OriginalArrivalTime: 05 Jun 2017 16:13:53.7349 (UTC)
X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted
X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY4PR12MB1670
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org
Content-Length: 1609
Lines: 39

In Family 17h, L3 is the last level cache as opposed to L2 in previous
families. Avoid this name confusion and rename X86_FEATURE_PERFCT_L2 to
X86_FEATURE_PERFCTR_LLC to indicate the performance counter on the last
level of cache.

Signed-off-by: Janakarajan Natarajan <Janakarajan.Natarajan@amd.com>
---
 arch/x86/events/amd/uncore.c       | 2 +-
 arch/x86/include/asm/cpufeatures.h | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/events/amd/uncore.c b/arch/x86/events/amd/uncore.c
index 4d1f7f2d..8fea711 100644
--- a/arch/x86/events/amd/uncore.c
+++ b/arch/x86/events/amd/uncore.c
@@ -569,7 +569,7 @@ static int __init amd_uncore_init(void)
 		ret = 0;
 	}
 
-	if (boot_cpu_has(X86_FEATURE_PERFCTR_L2)) {
+	if (boot_cpu_has(X86_FEATURE_PERFCTR_LLC)) {
 		amd_uncore_llc = alloc_percpu(struct amd_uncore *);
 		if (!amd_uncore_llc) {
 			ret = -ENOMEM;
diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpufeatures.h
index b04bb6d..da422d6 100644
--- a/arch/x86/include/asm/cpufeatures.h
+++ b/arch/x86/include/asm/cpufeatures.h
@@ -177,7 +177,7 @@
 #define X86_FEATURE_PERFCTR_NB  ( 6*32+24) /* NB performance counter extensions */
 #define X86_FEATURE_BPEXT	(6*32+26) /* data breakpoint extension */
 #define X86_FEATURE_PTSC	( 6*32+27) /* performance time-stamp counter */
-#define X86_FEATURE_PERFCTR_L2	( 6*32+28) /* L2 performance counter extensions */
+#define X86_FEATURE_PERFCTR_LLC	( 6*32+28) /* Last Level Cache performance counter extensions */
 #define X86_FEATURE_MWAITX	( 6*32+29) /* MWAIT extension (MONITORX/MWAITX) */
 
 /*
-- 
1.8.3.1