From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from e28smtp08.in.ibm.com (e28smtp08.in.ibm.com [122.248.162.8]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id AEAEC140303 for ; Mon, 5 May 2014 19:11:08 +1000 (EST) Received: from /spool/local by e28smtp08.in.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Mon, 5 May 2014 14:41:04 +0530 Received: from d28relay02.in.ibm.com (d28relay02.in.ibm.com [9.184.220.59]) by d28dlp02.in.ibm.com (Postfix) with ESMTP id 90F54394003E for ; Mon, 5 May 2014 14:41:01 +0530 (IST) Received: from d28av02.in.ibm.com (d28av02.in.ibm.com [9.184.220.64]) by d28relay02.in.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id s459B0sV24903786 for ; Mon, 5 May 2014 14:41:00 +0530 Received: from d28av02.in.ibm.com (localhost [127.0.0.1]) by d28av02.in.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id s459AsKQ025001 for ; Mon, 5 May 2014 14:40:56 +0530 From: Anshuman Khandual To: linuxppc-dev@ozlabs.org, linux-kernel@vger.kernel.org Subject: [V6 06/11] powerpc, perf: Re-arrange PMU based branch filter processing in POWER8 Date: Mon, 5 May 2014 14:39:08 +0530 Message-Id: <1399280953-31442-7-git-send-email-khandual@linux.vnet.ibm.com> In-Reply-To: <1399280953-31442-1-git-send-email-khandual@linux.vnet.ibm.com> References: <1399280953-31442-1-git-send-email-khandual@linux.vnet.ibm.com> Cc: mikey@neuling.org, ak@linux.intel.com, eranian@google.com, michael@ellerman.id.au, acme@ghostprotocols.net, sukadev@linux.vnet.ibm.com, mingo@kernel.org List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , This patch does some code re-arrangements to make it clear that it ignores any separate privilege level branch filter request and does not support any combinations of HW PMU branch filters. Signed-off-by: Anshuman Khandual --- arch/powerpc/perf/power8-pmu.c | 21 +++++++-------------- 1 file changed, 7 insertions(+), 14 deletions(-) diff --git a/arch/powerpc/perf/power8-pmu.c b/arch/powerpc/perf/power8-pmu.c index fe2763b..13f47f5 100644 --- a/arch/powerpc/perf/power8-pmu.c +++ b/arch/powerpc/perf/power8-pmu.c @@ -635,8 +635,6 @@ static int power8_generic_events[] = { static u64 power8_bhrb_filter_map(u64 branch_sample_type) { - u64 pmu_bhrb_filter = 0; - /* BHRB and regular PMU events share the same privilege state * filter configuration. BHRB is always recorded along with a * regular PMU event. As the privilege state filter is handled @@ -644,20 +642,15 @@ static u64 power8_bhrb_filter_map(u64 branch_sample_type) * PMU event, we ignore any separate BHRB specific request. */ - /* No branch filter requested */ - if (branch_sample_type & PERF_SAMPLE_BRANCH_ANY) - return pmu_bhrb_filter; - - /* Invalid branch filter options - HW does not support */ - if (branch_sample_type & PERF_SAMPLE_BRANCH_ANY_RETURN) - return -1; + /* Ignore user, kernel, hv bits */ + branch_sample_type &= ~PERF_SAMPLE_BRANCH_PLM_ALL; - if (branch_sample_type & PERF_SAMPLE_BRANCH_IND_CALL) - return -1; + /* No branch filter requested */ + if (branch_sample_type == PERF_SAMPLE_BRANCH_ANY) + return 0; - if (branch_sample_type & PERF_SAMPLE_BRANCH_ANY_CALL) { - pmu_bhrb_filter |= POWER8_MMCRA_IFM1; - return pmu_bhrb_filter; + if (branch_sample_type == PERF_SAMPLE_BRANCH_ANY_CALL) { + return POWER8_MMCRA_IFM1; } /* Every thing else is unsupported */ -- 1.7.11.7