From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: AG47ELvQmQTf1hXVdjFAR9Jdcq3i00HaB40WAMHk53pN2/q9ayVpdOc4NfYYtzXnodM7XbgDl3NS ARC-Seal: i=1; a=rsa-sha256; t=1520498771; cv=none; d=google.com; s=arc-20160816; b=n1gKvXOFDwrYzLm73AnseRzYzYb3tOrieSmXxPB2aP59R7C2OQtqcAlZrek1/BLweD KY1oI/kAmjGkD3b5VusVW/0B4ODrvTEBdVHn4/IqMvqh+okvzM93k9VVTnQOyJNd7y6o bLXkpukuhj3GN+JVgULeGMzh88FTquiz3SPTKdgIn17mbt9nl4hSPkFOIhXBe6etE0hJ 3mdvQXI6aOPY7os7lYRLWNYR8F7qrtpMvuFn9JeG8yiErcPJ9OvAAc8Y1L8WBdFshEy0 HyqHWYDTb0nhVJBmLBSkTO2ODWliPCVVj4pRYh87lQNhy79BJnBzoPTPortXBwPY2LvO bIPA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :user-agent:references:in-reply-to:message-id:date:subject:cc:to :from:dmarc-filter:arc-authentication-results; bh=GfTXTHo79NzIzS+EIBbaAvgtLvhNddF0fLEzdPm3z/E=; b=VzWMhfjTRzpWOneB53lI255GrJJyAVceVP5rUT72vzpSD1ahpOcWTC3QIxTjfG2bpo CxAidg/ZeLQ5U8xTnc53Gg4hgxpL/NasFPPIYhcV53kbC9MwPrcqVEc51wnmE5D2lBNS xS2W613BYCIuZd6YoTqTiYwoPFDtTPnkOdqt027akrCtSlM8B3FRy3uuuhOG1aD/OLSh /FuFGI9gmhFlBV9GJ/YxEBIAv/asYWm2QgQAlmyq1lAs7gMv2T1PI0BepCcJWPd0DOYt GFHESXET7XlkRZze0agwaIyGMcOaQ6omlb5nSUu0iMtAhfEvvgrBt6Uo2I34pRPLLEZG PjsQ== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kselftest-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kselftest-owner@vger.kernel.org Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kselftest-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kselftest-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934653AbeCHIp5 (ORCPT ); Thu, 8 Mar 2018 03:45:57 -0500 Received: from mail.kernel.org ([198.145.29.99]:50148 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934542AbeCHIp4 (ORCPT ); Thu, 8 Mar 2018 03:45:56 -0500 DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A962B2133D Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=mhiramat@kernel.org From: Masami Hiramatsu To: Steven Rostedt , linux-kernel@vger.kernel.org Cc: mhiramat@kernel.org, Ingo Molnar , Namhyung Kim , Tom Zanussi , Arnaldo Carvalho de Melo , linux-trace-users@vger.kernel.org, linux-kselftest@vger.kernel.org, shuah@kernel.org Subject: [PATCH v5 04/19] selftests: ftrace: Add a testcase for probepoint Date: Thu, 8 Mar 2018 17:45:32 +0900 Message-Id: <152049873256.7289.3073863568299389050.stgit@devbox> X-Mailer: git-send-email 2.13.6 In-Reply-To: <152049860385.7289.14079393589900496424.stgit@devbox> References: <152049860385.7289.14079393589900496424.stgit@devbox> User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Sender: linux-kselftest-owner@vger.kernel.org X-Mailing-List: linux-kselftest@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: =?utf-8?q?1594358519687245811?= X-GMAIL-MSGID: =?utf-8?q?1594358519687245811?= X-Mailing-List: linux-kernel@vger.kernel.org List-ID: Add a testcase for probe point definition. This tests symbol, address and symbol+offset syntax. The offset must be positive and smaller than UINT_MAX. Signed-off-by: Masami Hiramatsu --- .../selftests/ftrace/test.d/kprobe/probepoint.tc | 43 ++++++++++++++++++++ 1 file changed, 43 insertions(+) create mode 100644 tools/testing/selftests/ftrace/test.d/kprobe/probepoint.tc diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/probepoint.tc b/tools/testing/selftests/ftrace/test.d/kprobe/probepoint.tc new file mode 100644 index 000000000000..4fda01a08da4 --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/kprobe/probepoint.tc @@ -0,0 +1,43 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# description: Kprobe events - probe points + +[ -f kprobe_events ] || exit_unsupported # this is configurable + +TARGET_FUNC=create_trace_kprobe + +dec_addr() { # hexaddr + printf "%d" "0x"`echo $1 | tail -c 8` +} + +set_offs() { # prev target next + A1=`dec_addr $1` + A2=`dec_addr $2` + A3=`dec_addr $3` + TARGET="0x$2" # an address + PREV=`expr $A1 - $A2` # offset to previous symbol + NEXT=+`expr $A3 - $A2` # offset to next symbol + OVERFLOW=+`printf "0x%x" ${PREV}` # overflow offset to previous symbol +} + +# We have to decode symbol addresses to get correct offsets. +# If the offset is not an instruction boundary, it cause -EILSEQ. +set_offs `grep -A1 -B1 ${TARGET_FUNC} /proc/kallsyms | cut -f 1 -d " " | xargs` + +UINT_TEST=no +# printf "%x" -1 returns (unsigned long)-1. +if [ `printf "%x" -1 | wc -c` != 9 ]; then + UINT_TEST=yes +fi + +echo 0 > events/enable +echo > kprobe_events +echo "p:testprobe ${TARGET_FUNC}" > kprobe_events +echo "p:testprobe ${TARGET}" > kprobe_events +echo "p:testprobe ${TARGET_FUNC}${NEXT}" > kprobe_events +! echo "p:testprobe ${TARGET_FUNC}${PREV}" > kprobe_events +if [ "${UINT_TEST}" = yes ]; then +! echo "p:testprobe ${TARGET_FUNC}${OVERFLOW}" > kprobe_events +fi +echo > kprobe_events +clear_trace