Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757572Ab0LTNGf (ORCPT ); Mon, 20 Dec 2010 08:06:35 -0500 Received: from mtagate1.uk.ibm.com ([194.196.100.161]:33942 "EHLO mtagate1.uk.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757446Ab0LTNGd (ORCPT ); Mon, 20 Dec 2010 08:06:33 -0500 Message-Id: <20101220130629.974963910@linux.vnet.ibm.com> User-Agent: quilt/0.47-1 Date: Mon, 20 Dec 2010 14:05:45 +0100 From: graalfs@linux.vnet.ibm.com To: robert.richter@amd.com Cc: mingo@elte.hu, oprofile-list@lists.sf.net, linux-kernel@vger.kernel.org, linux-s390@vger.kernel.org, borntraeger@de.ibm.com, schwidefsky@de.ibm.com, heiko.carstens@de.ibm.com, Mahesh Salgaonkar , Maran Pakkirisamy Subject: [patch 4/4] Handle memory unmap while hardware sampling is running References: <20101220130541.446049933@linux.vnet.ibm.com> Content-Disposition: inline; filename=handle_munmap.patch Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2224 Lines: 70 From: graalfs@linux.vnet.ibm.com During memory unmap hardware sampling is deactivated. After all samples have been collected hardware sampling is reactivated again. Signed-off-by: Mahesh Salgaonkar Signed-off-by: Maran Pakkirisamy Signed-off-by: Heinz Graalfs --- arch/s390/oprofile/hwsampler_files.c | 2 +- drivers/oprofile/buffer_sync.c | 13 +++++++++++++ 2 files changed, 14 insertions(+), 1 deletion(-) Index: linux-2.6/drivers/oprofile/buffer_sync.c =================================================================== --- linux-2.6.orig/drivers/oprofile/buffer_sync.c +++ linux-2.6/drivers/oprofile/buffer_sync.c @@ -32,6 +32,11 @@ #include #include +#ifdef CONFIG_OPROFILE_HWSAMPLING_MODE +#include +extern unsigned long oprofile_hwsampler; +#endif + #include "oprofile_stats.h" #include "event_buffer.h" #include "cpu_buffer.h" @@ -513,6 +518,10 @@ void sync_buffer(int cpu) mutex_lock(&buffer_mutex); +#ifdef CONFIG_OPROFILE_HWSAMPLING_MODE + if (oprofile_hwsampler) + hwsampler_deactivate(cpu); +#endif add_cpu_switch(cpu); op_cpu_buffer_reset(cpu); @@ -569,6 +578,10 @@ void sync_buffer(int cpu) mark_done(cpu); +#ifdef CONFIG_OPROFILE_HWSAMPLING_MODE + if (oprofile_hwsampler) + hwsampler_activate(cpu); +#endif mutex_unlock(&buffer_mutex); } Index: linux-2.6/arch/s390/oprofile/hwsampler_files.c =================================================================== --- linux-2.6.orig/arch/s390/oprofile/hwsampler_files.c +++ linux-2.6/arch/s390/oprofile/hwsampler_files.c @@ -22,7 +22,7 @@ unsigned long oprofile_max_interval; static unsigned long oprofile_sdbt_blocks = DEFAULT_SDBT_BLOCKS; static unsigned long oprofile_sdb_blocks = DEFAULT_SDB_BLOCKS; -static unsigned long oprofile_hwsampler; +unsigned long oprofile_hwsampler; static int oprofile_hwsampler_start(void) { -- 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/