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From: Robert Richter <robert.richter@amd.com>
To: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>,
	LKML <linux-kernel@vger.kernel.org>,
	oprofile-list <oprofile-list@lists.sourceforge.net>,
	Robert Richter <robert.richter@amd.com>,
	Thomas Gleixner <tglx@linutronix.de>
Subject: [PATCH 4/9] tsc, x86: use new perfctr reservation functions in tsc code
Date: Thu, 4 Mar 2010 16:22:06 +0100	[thread overview]
Message-ID: <1267716131-17908-5-git-send-email-robert.richter@amd.com> (raw)
In-Reply-To: <1267716131-17908-1-git-send-email-robert.richter@amd.com>

Use reserve_perfctr()/release_perfctr() in tsc code.

Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Robert Richter <robert.richter@amd.com>
---
 arch/x86/kernel/tsc.c |    6 ++----
 1 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/arch/x86/kernel/tsc.c b/arch/x86/kernel/tsc.c
index ff98ef2..2cdacae 100644
--- a/arch/x86/kernel/tsc.c
+++ b/arch/x86/kernel/tsc.c
@@ -871,7 +871,7 @@ static unsigned long __init calibrate_cpu(void)
 	unsigned long flags;
 
 	for (i = 0; i < 4; i++)
-		if (avail_to_resrv_perfctr_nmi_bit(i))
+		if (reserve_perfctr(i))
 			break;
 	no_ctr_free = (i == 4);
 	if (no_ctr_free) {
@@ -881,8 +881,6 @@ static unsigned long __init calibrate_cpu(void)
 		rdmsrl(MSR_K7_EVNTSEL3, evntsel3);
 		wrmsrl(MSR_K7_EVNTSEL3, 0);
 		rdmsrl(MSR_K7_PERFCTR3, pmc3);
-	} else {
-		reserve_perfctr_nmi(MSR_K7_PERFCTR0 + i);
 	}
 	local_irq_save(flags);
 	/* start measuring cycles, incrementing from 0 */
@@ -900,7 +898,7 @@ static unsigned long __init calibrate_cpu(void)
 		wrmsrl(MSR_K7_PERFCTR3, pmc3);
 		wrmsrl(MSR_K7_EVNTSEL3, evntsel3);
 	} else {
-		release_perfctr_nmi(MSR_K7_PERFCTR0 + i);
+		release_perfctr(i);
 	}
 
 	return pmc_now * tsc_khz / (tsc_now - tsc_start);
-- 
1.7.0



  parent reply	other threads:[~2010-03-04 16:49 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-03-04 15:22 [PATCH 0/9] oprofile, perf, x86: introduce new functions to reserve perfctrs Robert Richter
2010-03-04 15:22 ` [PATCH 1/9] perf, x86: reduce number of CONFIG_X86_LOCAL_APIC macros Robert Richter
2010-03-04 15:22 ` [PATCH 2/9] oprofile, perf, x86: do not allocate evntsel counter msr Robert Richter
2010-03-04 15:22 ` [PATCH 3/9] oprofile, perf, x86: introduce new functions to reserve perfctrs by index Robert Richter
2010-03-20  5:45   ` Andi Kleen
2010-03-25 15:52     ` Robert Richter
2010-03-25 19:33       ` Andi Kleen
2010-03-04 15:22 ` Robert Richter [this message]
2010-03-04 15:22 ` [PATCH 5/9] perf, x86: use new perfctr reservation functions in perf code Robert Richter
2010-03-04 15:22 ` [PATCH 6/9] oprofile/x86: rework error handler in nmi_setup() Robert Richter
2010-03-04 15:22 ` [PATCH 7/9] oprofile/x86: return -EBUSY if counters are already reserved Robert Richter
2010-03-04 15:22 ` [PATCH 8/9] oprofile/x86: group IBS code Robert Richter
2010-03-04 15:22 ` [PATCH 9/9] oprofile/x86: implement perfctr reservation for IBS Robert Richter
2010-03-04 17:59 ` [PATCH 0/9] oprofile, perf, x86: introduce new functions to reserve perfctrs Peter Zijlstra
2010-03-11 11:48   ` Peter Zijlstra
2010-03-11 12:47     ` Ingo Molnar
2010-03-11 15:45       ` Robert Richter

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