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authorYipeng Zou <zouyipeng@huawei.com>2022-09-19 15:56:29 +0300
committerSteven Rostedt (Google) <rostedt@goodmis.org>2022-09-26 23:04:47 +0300
commitd8ef45d66c01425ff748e13ef7dd1da7a91cc93c (patch)
tree2c6caedae55c9e76070ef78479cc6743d1c6c5f5 /kernel/trace/kprobe_event_gen_test.c
parentac48e189527fae87253ef2bf58892e782fb36874 (diff)
downloadlinux-d8ef45d66c01425ff748e13ef7dd1da7a91cc93c.tar.xz
tracing: kprobe: Make gen test module work in arm and riscv
For now, this selftest module can only work in x86 because of the kprobe cmd was fixed use of x86 registers. This patch adapted to register names under arm and riscv, So that this module can be worked on those platform. Link: https://lkml.kernel.org/r/20220919125629.238242-3-zouyipeng@huawei.com Cc: <linux-riscv@lists.infradead.org> Cc: <mingo@redhat.com> Cc: <paul.walmsley@sifive.com> Cc: <palmer@dabbelt.com> Cc: <aou@eecs.berkeley.edu> Cc: <zanussi@kernel.org> Cc: <liaochang1@huawei.com> Cc: <chris.zjh@huawei.com> Fixes: 64836248dda2 ("tracing: Add kprobe event command generation test module") Signed-off-by: Yipeng Zou <zouyipeng@huawei.com> Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace/kprobe_event_gen_test.c')
-rw-r--r--kernel/trace/kprobe_event_gen_test.c47
1 files changed, 43 insertions, 4 deletions
diff --git a/kernel/trace/kprobe_event_gen_test.c b/kernel/trace/kprobe_event_gen_test.c
index e023154be0f8..80e04a1e1977 100644
--- a/kernel/trace/kprobe_event_gen_test.c
+++ b/kernel/trace/kprobe_event_gen_test.c
@@ -35,6 +35,45 @@
static struct trace_event_file *gen_kprobe_test;
static struct trace_event_file *gen_kretprobe_test;
+#define KPROBE_GEN_TEST_FUNC "do_sys_open"
+
+/* X86 */
+#if defined(CONFIG_X86_64) || defined(CONFIG_X86_32)
+#define KPROBE_GEN_TEST_ARG0 "dfd=%ax"
+#define KPROBE_GEN_TEST_ARG1 "filename=%dx"
+#define KPROBE_GEN_TEST_ARG2 "flags=%cx"
+#define KPROBE_GEN_TEST_ARG3 "mode=+4($stack)"
+
+/* ARM64 */
+#elif defined(CONFIG_ARM64)
+#define KPROBE_GEN_TEST_ARG0 "dfd=%x0"
+#define KPROBE_GEN_TEST_ARG1 "filename=%x1"
+#define KPROBE_GEN_TEST_ARG2 "flags=%x2"
+#define KPROBE_GEN_TEST_ARG3 "mode=%x3"
+
+/* ARM */
+#elif defined(CONFIG_ARM)
+#define KPROBE_GEN_TEST_ARG0 "dfd=%r0"
+#define KPROBE_GEN_TEST_ARG1 "filename=%r1"
+#define KPROBE_GEN_TEST_ARG2 "flags=%r2"
+#define KPROBE_GEN_TEST_ARG3 "mode=%r3"
+
+/* RISCV */
+#elif defined(CONFIG_RISCV)
+#define KPROBE_GEN_TEST_ARG0 "dfd=%a0"
+#define KPROBE_GEN_TEST_ARG1 "filename=%a1"
+#define KPROBE_GEN_TEST_ARG2 "flags=%a2"
+#define KPROBE_GEN_TEST_ARG3 "mode=%a3"
+
+/* others */
+#else
+#define KPROBE_GEN_TEST_ARG0 NULL
+#define KPROBE_GEN_TEST_ARG1 NULL
+#define KPROBE_GEN_TEST_ARG2 NULL
+#define KPROBE_GEN_TEST_ARG3 NULL
+#endif
+
+
/*
* Test to make sure we can create a kprobe event, then add more
* fields.
@@ -58,14 +97,14 @@ static int __init test_gen_kprobe_cmd(void)
* fields.
*/
ret = kprobe_event_gen_cmd_start(&cmd, "gen_kprobe_test",
- "do_sys_open",
- "dfd=%ax", "filename=%dx");
+ KPROBE_GEN_TEST_FUNC,
+ KPROBE_GEN_TEST_ARG0, KPROBE_GEN_TEST_ARG1);
if (ret)
goto free;
/* Use kprobe_event_add_fields to add the rest of the fields */
- ret = kprobe_event_add_fields(&cmd, "flags=%cx", "mode=+4($stack)");
+ ret = kprobe_event_add_fields(&cmd, KPROBE_GEN_TEST_ARG2, KPROBE_GEN_TEST_ARG3);
if (ret)
goto free;
@@ -128,7 +167,7 @@ static int __init test_gen_kretprobe_cmd(void)
* Define the kretprobe event.
*/
ret = kretprobe_event_gen_cmd_start(&cmd, "gen_kretprobe_test",
- "do_sys_open",
+ KPROBE_GEN_TEST_FUNC,
"$retval");
if (ret)
goto free;