From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andi Kleen Subject: [PATCH v1 06/10] perf, tools, report: Print better message for JITed code Date: Mon, 11 Mar 2019 13:24:42 -0700 Message-ID: <20190311202446.10210-7-andi@firstfloor.org> References: <20190311202446.10210-1-andi@firstfloor.org> Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Return-path: In-Reply-To: <20190311202446.10210-1-andi@firstfloor.org> Sender: linux-kernel-owner@vger.kernel.org To: acme@kernel.org Cc: jolsa@kernel.org, linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org, Andi Kleen List-Id: linux-perf-users.vger.kernel.org From: Andi Kleen The message about missing /tmp/perf-* for JITed code is quite confusing to users. Add a better error message, but only print it once. Signed-off-by: Andi Kleen --- tools/perf/util/map.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c index fbeb0c6efaa6..d476b76abc6a 100644 --- a/tools/perf/util/map.c +++ b/tools/perf/util/map.c @@ -316,6 +316,15 @@ int map__load(struct map *map) nr = dso__load(map->dso, map); if (nr < 0) { + if (!strncmp(map->dso->name, "/tmp/perf-", 10)) { + static bool warned; + if (!warned) { + pr_err("Cannot find executable, JITed code present? May need agent.\n"); + warned = true; + } + return -1; + } + if (map->dso->has_build_id) { char sbuild_id[SBUILD_ID_SIZE]; -- 2.20.1