From patchwork Tue Jan 3 18:10:23 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Will Deacon X-Patchwork-Id: 89708 Delivered-To: patch@linaro.org Received: by 10.140.20.101 with SMTP id 92csp8131320qgi; Tue, 3 Jan 2017 10:12:55 -0800 (PST) X-Received: by 10.84.218.133 with SMTP id r5mr138465288pli.175.1483467175052; Tue, 03 Jan 2017 10:12:55 -0800 (PST) Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id p124si69714402pga.159.2017.01.03.10.12.54; Tue, 03 Jan 2017 10:12:55 -0800 (PST) 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 S1760427AbdACSMm (ORCPT + 25 others); Tue, 3 Jan 2017 13:12:42 -0500 Received: from foss.arm.com ([217.140.101.70]:34830 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1760230AbdACSKs (ORCPT ); Tue, 3 Jan 2017 13:10:48 -0500 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 CF45A165D; Tue, 3 Jan 2017 10:10:30 -0800 (PST) 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 A2BB33F24D; Tue, 3 Jan 2017 10:10:30 -0800 (PST) Received: by edgewater-inn.cambridge.arm.com (Postfix, from userid 1000) id 8A4361AE4AE5; Tue, 3 Jan 2017 18:10:29 +0000 (GMT) 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: [RFC PATCH 06/10] perf/core: Export AUX buffer helpers to modules Date: Tue, 3 Jan 2017 18:10:23 +0000 Message-Id: <1483467027-14547-7-git-send-email-will.deacon@arm.com> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1483467027-14547-1-git-send-email-will.deacon@arm.com> References: <1483467027-14547-1-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 257fa460b846..13b8a46bd517 100644 --- a/kernel/events/ring_buffer.c +++ b/kernel/events/ring_buffer.c @@ -397,6 +397,7 @@ void *perf_aux_output_begin(struct perf_output_handle *handle, return NULL; } +EXPORT_SYMBOL(perf_aux_output_begin); /* * Commit the data written by hardware into the ring buffer by adjusting @@ -458,6 +459,7 @@ void perf_aux_output_end(struct perf_output_handle *handle, unsigned long size, rb_free_aux(rb); ring_buffer_put(rb); } +EXPORT_SYMBOL(perf_aux_output_end); /* * Skip over a given number of bytes in the AUX buffer, due to, for example, @@ -486,6 +488,7 @@ int perf_aux_output_skip(struct perf_output_handle *handle, unsigned long size) return 0; } +EXPORT_SYMBOL(perf_aux_output_skip); void *perf_get_aux(struct perf_output_handle *handle) { @@ -495,6 +498,7 @@ void *perf_get_aux(struct perf_output_handle *handle) return handle->rb->aux_priv; } +EXPORT_SYMBOL(perf_get_aux); #define PERF_AUX_GFP (GFP_KERNEL | __GFP_ZERO | __GFP_NOWARN | __GFP_NORETRY)