diff options
| author | Song Chen <chensong_2000@189.cn> | 2022-12-30 07:33:53 +0100 |
|---|---|---|
| committer | Masami Hiramatsu (Google) <mhiramat@kernel.org> | 2023-02-24 02:04:13 +0100 |
| commit | bd78acc89d4147aa4897a4c43e2a74c7df999b12 (patch) | |
| tree | 326f886571f1265d2e591241ba75c46073bb2d24 /kernel/trace/trace_kprobe.c | |
| parent | kernel/trace: Provide default impelentations defined in trace_probe_tmpl.h (diff) | |
| download | linux-bd78acc89d4147aa4897a4c43e2a74c7df999b12.tar.xz linux-bd78acc89d4147aa4897a4c43e2a74c7df999b12.zip | |
kernel/trace: extract common part in process_fetch_insn
Each probe has an instance of process_fetch_insn respectively,
but they have something in common.
This patch aims to extract the common part into
process_common_fetch_insn which can be shared by each probe,
and they only need to focus on their special cases.
Signed-off-by: Song Chen <chensong_2000@189.cn>
Suggested-by: Masami Hiramatsu <mhiramat@kernel.org>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Diffstat (limited to 'kernel/trace/trace_kprobe.c')
| -rw-r--r-- | kernel/trace/trace_kprobe.c | 14 |
1 files changed, 4 insertions, 10 deletions
diff --git a/kernel/trace/trace_kprobe.c b/kernel/trace/trace_kprobe.c index d32c6244ef99..59cda19a9033 100644 --- a/kernel/trace/trace_kprobe.c +++ b/kernel/trace/trace_kprobe.c @@ -1225,6 +1225,7 @@ process_fetch_insn(struct fetch_insn *code, void *rec, void *dest, { struct pt_regs *regs = rec; unsigned long val; + int ret; retry: /* 1st stage: get value from context */ @@ -1241,15 +1242,6 @@ retry: case FETCH_OP_RETVAL: val = regs_return_value(regs); break; - case FETCH_OP_IMM: - val = code->immediate; - break; - case FETCH_OP_COMM: - val = (unsigned long)current->comm; - break; - case FETCH_OP_DATA: - val = (unsigned long)code->data; - break; #ifdef CONFIG_HAVE_FUNCTION_ARG_ACCESS_API case FETCH_OP_ARG: val = regs_get_kernel_argument(regs, code->param); @@ -1259,7 +1251,9 @@ retry: code++; goto retry; default: - return -EILSEQ; + ret = process_common_fetch_insn(code, &val); + if (ret < 0) + return ret; } code++; |