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| author | Masami Hiramatsu <mhiramat@kernel.org> | 2018-08-30 17:20:56 +0300 |
|---|---|---|
| committer | Shuah Khan (Samsung OSG) <shuah@kernel.org> | 2018-10-24 23:49:35 +0300 |
| commit | 873b4af2103fbd1bb7895be202a58878254d89bc (patch) | |
| tree | 8ddc0a6dd032130ddd105c4957497bb92725d8df | |
| parent | 32f6e5da83c7f06db7e4efbdacdbc59c16fd6ecb (diff) | |
| download | linux-873b4af2103fbd1bb7895be202a58878254d89bc.tar.xz | |
selftests/ftrace: Add kprobe-event with symbol argument test
Add a testcase for kprobe-event with @symbol argument.
Since @symbol needs to refer the kernel data symbol
(linux_proc_banner), it requires CONFIG_KALLSYMS_ALL.
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Shuah Khan (Samsung OSG) <shuah@kernel.org>
| -rw-r--r-- | tools/testing/selftests/ftrace/config | 1 | ||||
| -rw-r--r-- | tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_symbol.tc | 39 |
2 files changed, 40 insertions, 0 deletions
diff --git a/tools/testing/selftests/ftrace/config b/tools/testing/selftests/ftrace/config index 32cf61b6bb54..b7ac74fcb0fa 100644 --- a/tools/testing/selftests/ftrace/config +++ b/tools/testing/selftests/ftrace/config @@ -11,3 +11,4 @@ CONFIG_MODULES=y CONFIG_MODULE_UNLOAD=y CONFIG_SAMPLES=y CONFIG_SAMPLE_TRACE_PRINTK=m +CONFIG_KALLSYMS_ALL=y diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_symbol.tc b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_symbol.tc new file mode 100644 index 000000000000..2b6dd33f9076 --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_symbol.tc @@ -0,0 +1,39 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# description: Kprobe event symbol argument + +[ -f kprobe_events ] || exit_unsupported # this is configurable + +SYMBOL="linux_proc_banner" + +if [ ! -f /proc/kallsyms ]; then + echo "Can not check the target symbol - please enable CONFIG_KALLSYMS" + exit_unresolved +elif ! grep "$SYMBOL\$" /proc/kallsyms; then + echo "Linux banner is not exported - please enable CONFIG_KALLSYMS_ALL" + exit_unresolved +fi + +: "Test get basic types symbol argument" +echo "p:testprobe_u _do_fork arg1=@linux_proc_banner:u64 arg2=@linux_proc_banner:u32 arg3=@linux_proc_banner:u16 arg4=@linux_proc_banner:u8" > kprobe_events +echo "p:testprobe_s _do_fork arg1=@linux_proc_banner:s64 arg2=@linux_proc_banner:s32 arg3=@linux_proc_banner:s16 arg4=@linux_proc_banner:s8" >> kprobe_events +if grep -q "x8/16/32/64" README; then + echo "p:testprobe_x _do_fork arg1=@linux_proc_banner:x64 arg2=@linux_proc_banner:x32 arg3=@linux_proc_banner:x16 arg4=@linux_proc_banner:x8" >> kprobe_events +fi +echo "p:testprobe_bf _do_fork arg1=@linux_proc_banner:b8@4/32" >> kprobe_events +echo 1 > events/kprobes/enable +(echo "forked") +echo 0 > events/kprobes/enable +grep "testprobe_[usx]:.* arg1=.* arg2=.* arg3=.* arg4=.*" trace +grep "testprobe_bf:.* arg1=.*" trace + +: "Test get string symbol argument" +echo "p:testprobe_str _do_fork arg1=@linux_proc_banner:string" > kprobe_events +echo 1 > events/kprobes/enable +(echo "forked") +echo 0 > events/kprobes/enable +RESULT=`grep "testprobe_str" trace | sed -e 's/.* arg1=\(.*\)/\1/'` + +RESULT=`echo $RESULT | sed -e 's/.* \((.*)\) \((.*)\) .*/\1 \2/'` +ORIG=`cat /proc/version | sed -e 's/.* \((.*)\) \((.*)\) .*/\1 \2/'` +test "$RESULT" = "$ORIG" |