From patchwork Thu Apr 6 16:18:13 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Will Deacon X-Patchwork-Id: 96999 Delivered-To: patch@linaro.org Received: by 10.140.89.233 with SMTP id v96csp807633qgd; Thu, 6 Apr 2017 09:19:38 -0700 (PDT) X-Received: by 10.84.139.40 with SMTP id 37mr45105367plq.10.1491495578047; Thu, 06 Apr 2017 09:19:38 -0700 (PDT) Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id l8si2290336pgc.61.2017.04.06.09.19.37; Thu, 06 Apr 2017 09:19:38 -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 S934142AbdDFQTb (ORCPT + 14 others); Thu, 6 Apr 2017 12:19:31 -0400 Received: from foss.arm.com ([217.140.101.70]:45438 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755456AbdDFQSC (ORCPT ); Thu, 6 Apr 2017 12:18:02 -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 4D44215BF; Thu, 6 Apr 2017 09:18:02 -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 1E4B53F804; Thu, 6 Apr 2017 09:18:02 -0700 (PDT) Received: by edgewater-inn.cambridge.arm.com (Postfix, from userid 1000) id E40F21AE33EC; Thu, 6 Apr 2017 17:18:20 +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, alex.bennee@linaro.org, christoffer.dall@linaro.org, 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 v2 3/6] perf/core: Export AUX buffer helpers to modules Date: Thu, 6 Apr 2017 17:18:13 +0100 Message-Id: <1491495496-1524-4-git-send-email-will.deacon@arm.com> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1491495496-1524-1-git-send-email-will.deacon@arm.com> References: <1491495496-1524-1-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 9654e55c38d6..f3ebafe06099 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)