Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754253AbbGACWe (ORCPT ); Tue, 30 Jun 2015 22:22:34 -0400 Received: from szxga02-in.huawei.com ([119.145.14.65]:1634 "EHLO szxga02-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753593AbbGACPz (ORCPT ); Tue, 30 Jun 2015 22:15:55 -0400 From: Wang Nan To: , , , , , , , , , , CC: , , , , Subject: [RFC PATCH v10 49/50] perf probe: Init symbol as kprobe if any event is kprobe Date: Wed, 1 Jul 2015 02:14:37 +0000 Message-ID: <1435716878-189507-50-git-send-email-wangnan0@huawei.com> X-Mailer: git-send-email 1.8.3.4 In-Reply-To: <1435716878-189507-1-git-send-email-wangnan0@huawei.com> References: <1435716878-189507-1-git-send-email-wangnan0@huawei.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.107.197.200] X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1427 Lines: 40 Before this patch, add_perf_probe_events() init symbol maps only for uprobe if the first 'struct perf_probe_event' passed to it is a uprobe event. This is a trick because 'perf probe''s command line syntax constrains the first elements of the probe_event arrays must be kprobes if there is one. However, with the incoming BPF uprobe support, the constrain is not hold since 'perf record' will also probe on k/u probes through BPF object, and is possible to pass an array with kprobe but the first element is uprobe. This patch init symbol maps for kprobes even if all of events are uprobes, because the extra cost should be small enough. Signed-off-by: Wang Nan --- tools/perf/util/probe-event.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c index b9573c5..77650f4 100644 --- a/tools/perf/util/probe-event.c +++ b/tools/perf/util/probe-event.c @@ -2808,7 +2808,7 @@ int add_perf_probe_events(struct perf_probe_event *pevs, int npevs, { int i, ret; - ret = init_symbol_maps(pevs->uprobes); + ret = init_symbol_maps(false); if (ret < 0) return ret; -- 1.8.3.4 -- 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/