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lib/test_fprobe: Add private entry_data testcases

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Add test cases for checking whether private entry_data is
correctly passed or not.

Link: https://lkml.kernel.org/r/167526697074.433354.17790288501657876219.stgit@mhiramat.roam.corp.google.com

Cc: Florent Revest <revest@chromium.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
This commit is contained in:
Masami Hiramatsu (Google) 2023-02-02 00:56:10 +09:00 committed by Steven Rostedt (Google)
parent 76d0de5729
commit 34cabf8fd1
1 changed files with 30 additions and 0 deletions
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30
lib/test_fprobe.c
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@ -38,6 +38,12 @@ static notrace void fp_entry_handler(struct fprobe *fp, unsigned long ip,
if (ip != target_ip)
KUNIT_EXPECT_EQ(current_test, ip, target2_ip);
entry_val = (rand1 / div_factor);
if (fp->entry_data_size) {
KUNIT_EXPECT_NOT_NULL(current_test, data);
if (data)
*(u32 *)data = entry_val;
} else
KUNIT_EXPECT_NULL(current_test, data);
}
static notrace void fp_exit_handler(struct fprobe *fp, unsigned long ip,
@ -53,6 +59,12 @@ static notrace void fp_exit_handler(struct fprobe *fp, unsigned long ip,
KUNIT_EXPECT_EQ(current_test, ret, (rand1 / div_factor));
KUNIT_EXPECT_EQ(current_test, entry_val, (rand1 / div_factor));
exit_val = entry_val + div_factor;
if (fp->entry_data_size) {
KUNIT_EXPECT_NOT_NULL(current_test, data);
if (data)
KUNIT_EXPECT_EQ(current_test, *(u32 *)data, entry_val);
} else
KUNIT_EXPECT_NULL(current_test, data);
}
/* Test entry only (no rethook) */
@ -134,6 +146,23 @@ static void test_fprobe_syms(struct kunit *test)
KUNIT_EXPECT_EQ(test, 0, unregister_fprobe(&fp));
}
/* Test private entry_data */
static void test_fprobe_data(struct kunit *test)
{
struct fprobe fp = {
.entry_handler = fp_entry_handler,
.exit_handler = fp_exit_handler,
.entry_data_size = sizeof(u32),
};
current_test = test;
KUNIT_EXPECT_EQ(test, 0, register_fprobe(&fp, "fprobe_selftest_target", NULL));
target(rand1);
KUNIT_EXPECT_EQ(test, 0, unregister_fprobe(&fp));
}
static unsigned long get_ftrace_location(void *func)
{
unsigned long size, addr = (unsigned long)func;
@ -159,6 +188,7 @@ static struct kunit_case fprobe_testcases[] = {
KUNIT_CASE(test_fprobe_entry),
KUNIT_CASE(test_fprobe),
KUNIT_CASE(test_fprobe_syms),
KUNIT_CASE(test_fprobe_data),
{}
};