linux-kernel - [tip:perf/core] perf/x86/intel/uncore: Remove SBOX support for BDX-DE

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Message-ID: <tip-6cb2f1d9af5b0f0afdd4e689d969df4b5c76a4c2@git.kernel.org>
Date:	Mon, 29 Feb 2016 03:02:42 -0800
From:	tip-bot for Kan Liang <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	hpa@...or.com, acme@...hat.com, tonyb@...ernetics.com,
	kan.liang@...el.com, stable@...r.kernel.org, mingo@...nel.org,
	peterz@...radead.org, eranian@...gle.com,
	torvalds@...ux-foundation.org, vincent.weaver@...ne.edu,
	linux-kernel@...r.kernel.org, tglx@...utronix.de, jolsa@...hat.com
Subject: [tip:perf/core] perf/x86/intel/uncore: Remove SBOX support for
 BDX-DE

Commit-ID:  6cb2f1d9af5b0f0afdd4e689d969df4b5c76a4c2
Gitweb:     http://git.kernel.org/tip/6cb2f1d9af5b0f0afdd4e689d969df4b5c76a4c2
Author:     Kan Liang <kan.liang@...el.com>
AuthorDate: Wed, 24 Feb 2016 05:07:43 -0500
Committer:  Ingo Molnar <mingo@...nel.org>
CommitDate: Mon, 29 Feb 2016 09:35:11 +0100

perf/x86/intel/uncore: Remove SBOX support for BDX-DE

BDX-DE and BDX-EP share the same uncore code path. But there is no sbox
in BDX-DE. This patch remove SBOX support for BDX-DE.

Signed-off-by: Kan Liang <kan.liang@...el.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
Cc: <stable@...r.kernel.org>
Cc: <tonyb@...ernetics.com>
Cc: Arnaldo Carvalho de Melo <acme@...hat.com>
Cc: Jiri Olsa <jolsa@...hat.com>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Stephane Eranian <eranian@...gle.com>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Tony Battersby <tonyb@...ernetics.com>
Cc: Vince Weaver <vincent.weaver@...ne.edu>
Link: http://lkml.kernel.org/r/37D7C6CF3E00A74B8858931C1DB2F0770589D336@SHSMSX103.ccr.corp.intel.com
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 arch/x86/events/intel/uncore_snbep.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/arch/x86/events/intel/uncore_snbep.c b/arch/x86/events/intel/uncore_snbep.c
index 0c801f7..d967fcc 100644
--- a/arch/x86/events/intel/uncore_snbep.c
+++ b/arch/x86/events/intel/uncore_snbep.c
@@ -2874,11 +2874,13 @@ static struct intel_uncore_type bdx_uncore_sbox = {
 	.format_group		= &hswep_uncore_sbox_format_group,
 };
 
+#define BDX_MSR_UNCORE_SBOX	3
+
 static struct intel_uncore_type *bdx_msr_uncores[] = {
 	&bdx_uncore_ubox,
 	&bdx_uncore_cbox,
-	&bdx_uncore_sbox,
 	&hswep_uncore_pcu,
+	&bdx_uncore_sbox,
 	NULL,
 };
 
@@ -2887,6 +2889,10 @@ void bdx_uncore_cpu_init(void)
 	if (bdx_uncore_cbox.num_boxes > boot_cpu_data.x86_max_cores)
 		bdx_uncore_cbox.num_boxes = boot_cpu_data.x86_max_cores;
 	uncore_msr_uncores = bdx_msr_uncores;
+
+	/* BDX-DE doesn't have SBOX */
+	if (boot_cpu_data.x86_model == 86)
+		uncore_msr_uncores[BDX_MSR_UNCORE_SBOX] = NULL;
 }
 
 static struct intel_uncore_type bdx_uncore_ha = {