From patchwork Thu May 18 17:24:30 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Will Deacon X-Patchwork-Id: 100112 Delivered-To: patch@linaro.org Received: by 10.140.96.100 with SMTP id j91csp825363qge; Thu, 18 May 2017 10:25:02 -0700 (PDT) X-Received: by 10.98.38.193 with SMTP id m184mr5645197pfm.150.1495128302816; Thu, 18 May 2017 10:25:02 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1495128302; cv=none; d=google.com; s=arc-20160816; b=LVmnXELgeEHk+yrPav5FTmskWqUa+8BB/UKhyQERG1sHbqZDcOE1vWtl0uLtCtoGua AvwoN6dCCMHbd9GkVnsn//WG1qFny+HRseAnnzeB2AfGZezqsxrx6lKKAwoxkn4+E0H8 5p9y1lSA53gDoFC8HhAMFqHHBPKRjCiehjmngSfUva0lw/c/VnEYxn8SaCiqLdCBrl5p Fq65ys8xnS7dL1TtMX9C755z7jvP2FS7gRBKdS3BfTmMJG3Ks72HOM+hBxZ+8AdI31Ao DkJw9mZlb7RCpEaV2yhm9/m2sZ+UgwqM7ShiSM/eICnLmU3aeHPBrkG5fVqM648Fox8C R2kw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:references:in-reply-to:message-id:date :subject:cc:to:from:arc-authentication-results; bh=AKFNnisl6jpdmfIR5H9J+bFSl2GX4vEiFY9oRX6rCvw=; b=lFTl73M9K+ifPdMae+Dh3xw6lBPK6qegRG2JZZgz/2z2hQzKt8owH4ZMRkDNR2FgpT ShNAWzs359f7LUJpHSTH+BFrSTidmm1V7JlVJnd7QW47Upsamk/q1XfDOyEhmBnL9dPg vD/1LNFZvSbg54gOw7vdfQNUe7ByRH/xokZc/zX6UHti/5ljR4IB51hD42spBxIh7MZa HvQ+Kbye94fju9PL181pZabzq+iLYE+ib8hUUoLEvEaR74MRVIGReSfYNLv8hKQp0tEu ZxwIIzBAtZaEAP0S57MuUYWWrlqt9vpDI2auZHAn8R6ejgXs9kTnb5W0owukhHejx8ea dHAg== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id s10si5810994pgc.166.2017.05.18.10.25.02; Thu, 18 May 2017 10:25:02 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934628AbdERRYk (ORCPT + 25 others); Thu, 18 May 2017 13:24:40 -0400 Received: from foss.arm.com ([217.140.101.70]:34698 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932827AbdERRYf (ORCPT ); Thu, 18 May 2017 13:24:35 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 90E6415BE; Thu, 18 May 2017 10:24:34 -0700 (PDT) Received: from edgewater-inn.cambridge.arm.com (usa-sjc-imap-foss1.foss.arm.com [10.72.51.249]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 61DEF3F5C2; Thu, 18 May 2017 10:24:34 -0700 (PDT) Received: by edgewater-inn.cambridge.arm.com (Postfix, from userid 1000) id D27881AE38D5; Thu, 18 May 2017 18:24:34 +0100 (BST) From: Will Deacon To: linux-arm-kernel@lists.infradead.org Cc: marc.zyngier@arm.com, mark.rutland@arm.com, kim.phillips@arm.com, tglx@linutronix.de, peterz@infradead.org, alexander.shishkin@linux.intel.com, robh@kernel.org, suzuki.poulose@arm.com, pawel.moll@arm.com, mathieu.poirier@linaro.org, mingo@redhat.com, linux-kernel@vger.kernel.org, Will Deacon Subject: [PATCH v3 2/5] perf/core: Export AUX buffer helpers to modules Date: Thu, 18 May 2017 18:24:30 +0100 Message-Id: <1495128273-13941-3-git-send-email-will.deacon@arm.com> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1495128273-13941-1-git-send-email-will.deacon@arm.com> References: <1495128273-13941-1-git-send-email-will.deacon@arm.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Perf PMU drivers using AUX buffers cannot be built as modules unless the AUX helpers are exported. This patch exports perf_aux_output_{begin,end,skip} and perf_get_aux to modules. Cc: Peter Zijlstra Signed-off-by: Will Deacon --- kernel/events/ring_buffer.c | 4 ++++ 1 file changed, 4 insertions(+) -- 2.1.4 diff --git a/kernel/events/ring_buffer.c b/kernel/events/ring_buffer.c index 2831480c63a2..cd5e902a27ac 100644 --- a/kernel/events/ring_buffer.c +++ b/kernel/events/ring_buffer.c @@ -411,6 +411,7 @@ void *perf_aux_output_begin(struct perf_output_handle *handle, return NULL; } +EXPORT_SYMBOL_GPL(perf_aux_output_begin); /* * Commit the data written by hardware into the ring buffer by adjusting @@ -470,6 +471,7 @@ void perf_aux_output_end(struct perf_output_handle *handle, unsigned long size) rb_free_aux(rb); ring_buffer_put(rb); } +EXPORT_SYMBOL_GPL(perf_aux_output_end); /* * Skip over a given number of bytes in the AUX buffer, due to, for example, @@ -498,6 +500,7 @@ int perf_aux_output_skip(struct perf_output_handle *handle, unsigned long size) return 0; } +EXPORT_SYMBOL_GPL(perf_aux_output_skip); void *perf_get_aux(struct perf_output_handle *handle) { @@ -507,6 +510,7 @@ void *perf_get_aux(struct perf_output_handle *handle) return handle->rb->aux_priv; } +EXPORT_SYMBOL_GPL(perf_get_aux); #define PERF_AUX_GFP (GFP_KERNEL | __GFP_ZERO | __GFP_NOWARN | __GFP_NORETRY)