From mboxrd@z Thu Jan 1 00:00:00 1970 From: mhiramat at kernel.org (Masami Hiramatsu) Date: Fri, 17 Aug 2018 01:40:59 +0900 Subject: [PATCH v2 25/32] selftests/ftrace: Add function filter on module testcase In-Reply-To: <153443695002.23257.13628220023468200991.stgit@devbox> References: <153443695002.23257.13628220023468200991.stgit@devbox> Message-ID: <153443765894.23257.13622063956539869338.stgit@devbox> Add a testcase for function filter on module. Signed-off-by: Masami Hiramatsu --- .../ftrace/test.d/ftrace/func_mod_trace.tc | 24 ++++++++++++++++++++ 1 file changed, 24 insertions(+) create mode 100644 tools/testing/selftests/ftrace/test.d/ftrace/func_mod_trace.tc diff --git a/tools/testing/selftests/ftrace/test.d/ftrace/func_mod_trace.tc b/tools/testing/selftests/ftrace/test.d/ftrace/func_mod_trace.tc new file mode 100644 index 000000000000..359380c3834f --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/ftrace/func_mod_trace.tc @@ -0,0 +1,24 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# description: ftrace - function trace on module + +[ ! -f set_ftrace_filter ] && exit_unsupported + +: "mod: allows to filter a non exist function" +echo 'non_exist_func:mod:non_exist_module' > set_ftrace_filter +grep -q "non_exist_func" set_ftrace_filter + +: "mod: on exist module" +echo '*:mod:trace_printk' > set_ftrace_filter +if ! modprobe trace-printk.ko ; then + echo "No trace-printk sample module - please make CONFIG_SAMPLE_TRACE_PRINTK= +m" + exit_unresolved; +fi + +: "Wildcard should be resolved after loading module" +grep -q "trace_printk_irq_work" set_ftrace_filter + +: "After removing the filter becomes empty" +rmmod trace_printk +test `cat set_ftrace_filter | wc -l` -eq 0 From mboxrd@z Thu Jan 1 00:00:00 1970 From: mhiramat@kernel.org (Masami Hiramatsu) Date: Fri, 17 Aug 2018 01:40:59 +0900 Subject: [PATCH v2 25/32] selftests/ftrace: Add function filter on module testcase In-Reply-To: <153443695002.23257.13628220023468200991.stgit@devbox> References: <153443695002.23257.13628220023468200991.stgit@devbox> Message-ID: <153443765894.23257.13622063956539869338.stgit@devbox> Content-Type: text/plain; charset="UTF-8" Message-ID: <20180816164059.HrycYsOgM6nlqLTtbJeduw-6uhUNJsAlGDDOw3WWkcs@z> Add a testcase for function filter on module. Signed-off-by: Masami Hiramatsu --- .../ftrace/test.d/ftrace/func_mod_trace.tc | 24 ++++++++++++++++++++ 1 file changed, 24 insertions(+) create mode 100644 tools/testing/selftests/ftrace/test.d/ftrace/func_mod_trace.tc diff --git a/tools/testing/selftests/ftrace/test.d/ftrace/func_mod_trace.tc b/tools/testing/selftests/ftrace/test.d/ftrace/func_mod_trace.tc new file mode 100644 index 000000000000..359380c3834f --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/ftrace/func_mod_trace.tc @@ -0,0 +1,24 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# description: ftrace - function trace on module + +[ ! -f set_ftrace_filter ] && exit_unsupported + +: "mod: allows to filter a non exist function" +echo 'non_exist_func:mod:non_exist_module' > set_ftrace_filter +grep -q "non_exist_func" set_ftrace_filter + +: "mod: on exist module" +echo '*:mod:trace_printk' > set_ftrace_filter +if ! modprobe trace-printk.ko ; then + echo "No trace-printk sample module - please make CONFIG_SAMPLE_TRACE_PRINTK= +m" + exit_unresolved; +fi + +: "Wildcard should be resolved after loading module" +grep -q "trace_printk_irq_work" set_ftrace_filter + +: "After removing the filter becomes empty" +rmmod trace_printk +test `cat set_ftrace_filter | wc -l` -eq 0