Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752920AbbKQJuH (ORCPT ); Tue, 17 Nov 2015 04:50:07 -0500 Received: from szxga01-in.huawei.com ([58.251.152.64]:28421 "EHLO szxga01-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751041AbbKQJuA (ORCPT ); Tue, 17 Nov 2015 04:50:00 -0500 From: Wang Nan To: , , CC: , , , He Kuang , Wang Nan , "Arnaldo Carvalho de Melo" , Namhyung Kim Subject: [PATCH] perf record: Support custom vmlinux path Date: Tue, 17 Nov 2015 09:44:44 +0000 Message-ID: <1447753484-176754-1-git-send-email-wangnan0@huawei.com> X-Mailer: git-send-email 1.8.3.4 In-Reply-To: <20151117012924.GA22729@kernel.org> References: <20151117012924.GA22729@kernel.org> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.107.193.248] X-CFilter-Loop: Reflected X-Mirapoint-Virus-RAPID-Raw: score=unknown(0), refid=str=0001.0A090204.564AF838.00B8,ss=1,re=0.000,recu=0.000,reip=0.000,cl=1,cld=1,fgs=0, ip=0.0.0.0, so=2013-06-18 04:22:30, dmn=2013-03-21 17:37:32 X-Mirapoint-Loop-Id: c7a5fbfb614ee48cbf2b7584f9cb6308 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1918 Lines: 57 From: He Kuang Make perf-record command support --vmlinux option if BPF_PROLOGUE is on. 'perf record' needs vmlinux as the source of DWARF info to generate prologue for BPF programs, so path of vmlinux should be specified. Short name 'k' has been taken by 'clockid'. This patch skips the short option name and use '--vmlinux' for vmlinux path. Signed-off-by: He Kuang Signed-off-by: Wang Nan Cc: Alexei Starovoitov Cc: Arnaldo Carvalho de Melo Cc: Masami Hiramatsu Cc: Namhyung Kim Cc: Zefan Li Cc: pi3orama@163.com --- Hi Arnaldo, This patch is a standalone improvement to support BPF argument fetching better. Without this patch vmlinux must be reside in standard path for BPF loader finding it. I think you can review this patch with other patch I send today. Other patch on my local tree is not belong to this topic. Thank you. --- tools/perf/builtin-record.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index 199fc31..cfd0e14 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -1118,6 +1118,10 @@ struct option __record_options[] = { "clang binary to use for compiling BPF scriptlets"), OPT_STRING(0, "clang-opt", &llvm_param.clang_opt, "clang options", "options passed to clang when compiling BPF scriptlets"), +#ifdef HAVE_BPF_PROLOGUE + OPT_STRING(0, "vmlinux", &symbol_conf.vmlinux_name, + "file", "vmlinux pathname"), +#endif #endif OPT_END() }; -- 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/