linux-kernel - [tip:perf/core] perf/x86/intel/uncore: Remove hard coding of PMON box control MSR offset

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Date:	Wed, 6 Jan 2016 10:53:56 -0800
From:	tip-bot for Harish Chegondi <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	acme@...hat.com, lukasz.anaczkowski@...el.com, tglx@...utronix.de,
	peterz@...radead.org, eranian@...gle.com, hpa@...or.com,
	harish.chegondi@...el.com, mingo@...nel.org, andi.kleen@...el.com,
	jolsa@...hat.com, harish.chegondi@...il.com,
	vincent.weaver@...ne.edu, torvalds@...ux-foundation.org,
	kan.liang@...el.com, linux-kernel@...r.kernel.org
Subject: [tip:perf/core] perf/x86/intel/uncore:
  Remove hard coding of PMON box control MSR offset

Commit-ID:  dae25530a44ad9e6523495ebc8b37bb0a1640490
Gitweb:     http://git.kernel.org/tip/dae25530a44ad9e6523495ebc8b37bb0a1640490
Author:     Harish Chegondi <harish.chegondi@...el.com>
AuthorDate: Mon, 7 Dec 2015 14:32:31 -0800
Committer:  Ingo Molnar <mingo@...nel.org>
CommitDate: Wed, 6 Jan 2016 11:15:37 +0100

perf/x86/intel/uncore: Remove hard coding of PMON box control MSR offset

Call uncore_pci_box_ctl() function to get the PMON box control MSR offset
instead of hard coding the offset. This would allow us to use this
snbep_uncore_pci_init_box() function for other PCI PMON devices whose box
control MSR offset is different from SNBEP_PCI_PMON_BOX_CTL.

Signed-off-by: Harish Chegondi <harish.chegondi@...el.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
Cc: Andi Kleen <andi.kleen@...el.com>
Cc: Arnaldo Carvalho de Melo <acme@...hat.com>
Cc: Harish Chegondi <harish.chegondi@...il.com>
Cc: Jiri Olsa <jolsa@...hat.com>
Cc: Kan Liang <kan.liang@...el.com>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Lukasz Anaczkowski <lukasz.anaczkowski@...el.com>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Stephane Eranian <eranian@...gle.com>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Vince Weaver <vincent.weaver@...ne.edu>
Link: http://lkml.kernel.org/r/872e8ef16cfc38e5ff3b45fac1094e6f1722e4ad.1449470704.git.harish.chegondi@intel.com
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 arch/x86/kernel/cpu/perf_event_intel_uncore_snbep.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/x86/kernel/cpu/perf_event_intel_uncore_snbep.c b/arch/x86/kernel/cpu/perf_event_intel_uncore_snbep.c
index f2ddfcc..bfb9656 100644
--- a/arch/x86/kernel/cpu/perf_event_intel_uncore_snbep.c
+++ b/arch/x86/kernel/cpu/perf_event_intel_uncore_snbep.c
@@ -315,8 +315,9 @@ static u64 snbep_uncore_pci_read_counter(struct intel_uncore_box *box, struct pe
 static void snbep_uncore_pci_init_box(struct intel_uncore_box *box)
 {
 	struct pci_dev *pdev = box->pci_dev;
+	int box_ctl = uncore_pci_box_ctl(box);
 
-	pci_write_config_dword(pdev, SNBEP_PCI_PMON_BOX_CTL, SNBEP_PMON_BOX_CTL_INT);
+	pci_write_config_dword(pdev, box_ctl, SNBEP_PMON_BOX_CTL_INT);
 }
 
 static void snbep_uncore_msr_disable_box(struct intel_uncore_box *box)
--
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