Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964782AbXBLHtA (ORCPT ); Mon, 12 Feb 2007 02:49:00 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S933083AbXBLHqr (ORCPT ); Mon, 12 Feb 2007 02:46:47 -0500 Received: from mx2.suse.de ([195.135.220.15]:49610 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933085AbXBLHiC (ORCPT ); Mon, 12 Feb 2007 02:38:02 -0500 From: Andi Kleen References: <20070212837.963446000@suse.de> In-Reply-To: <20070212837.963446000@suse.de> To: Venkatesh Pallipadi , patches@x86-64.org, linux-kernel@vger.kernel.org Subject: [PATCH x86 for review II] [12/39] i386: Handle 32 bit PerfMon Counter writes cleanly in oprofile Message-Id: <20070212073759.2D7DA13E11@wotan.suse.de> Date: Mon, 12 Feb 2007 08:37:58 +0100 (CET) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2126 Lines: 58 From: Venkatesh Pallipadi Handle these 32 bit perfmon counter MSR writes cleanly in oprofile. Signed-off-by: Venkatesh Pallipadi Signed-off-by: Andi Kleen --- arch/i386/oprofile/op_model_ppro.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) Index: linux/arch/i386/oprofile/op_model_ppro.c =================================================================== --- linux.orig/arch/i386/oprofile/op_model_ppro.c +++ linux/arch/i386/oprofile/op_model_ppro.c @@ -24,7 +24,8 @@ #define CTR_IS_RESERVED(msrs,c) (msrs->counters[(c)].addr ? 1 : 0) #define CTR_READ(l,h,msrs,c) do {rdmsr(msrs->counters[(c)].addr, (l), (h));} while (0) -#define CTR_WRITE(l,msrs,c) do {wrmsr(msrs->counters[(c)].addr, -(u32)(l), -1);} while (0) +#define CTR_32BIT_WRITE(l,msrs,c) \ + do {wrmsr(msrs->counters[(c)].addr, -(u32)(l), 0);} while (0) #define CTR_OVERFLOWED(n) (!((n) & (1U<<31))) #define CTRL_IS_RESERVED(msrs,c) (msrs->controls[(c)].addr ? 1 : 0) @@ -79,7 +80,7 @@ static void ppro_setup_ctrs(struct op_ms for (i = 0; i < NUM_COUNTERS; ++i) { if (unlikely(!CTR_IS_RESERVED(msrs,i))) continue; - CTR_WRITE(1, msrs, i); + CTR_32BIT_WRITE(1, msrs, i); } /* enable active counters */ @@ -87,7 +88,7 @@ static void ppro_setup_ctrs(struct op_ms if ((counter_config[i].enabled) && (CTR_IS_RESERVED(msrs,i))) { reset_value[i] = counter_config[i].count; - CTR_WRITE(counter_config[i].count, msrs, i); + CTR_32BIT_WRITE(counter_config[i].count, msrs, i); CTRL_READ(low, high, msrs, i); CTRL_CLEAR(low); @@ -116,7 +117,7 @@ static int ppro_check_ctrs(struct pt_reg CTR_READ(low, high, msrs, i); if (CTR_OVERFLOWED(low)) { oprofile_add_sample(regs, i); - CTR_WRITE(reset_value[i], msrs, i); + CTR_32BIT_WRITE(reset_value[i], msrs, i); } } - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/