[PATCH v5 2/8] tracing/probes: support '%pd' type for print struct dentry's name
From: Ye Bin <hidden>
Date: 2024-01-25 07:39:21
Also in:
lkml
Subsystem:
the rest, tracing · Maintainers:
Linus Torvalds, Steven Rostedt, Masami Hiramatsu
Similar to '%pd' for printk, use '%pd' for print struct dentry's name. Signed-off-by: Ye Bin <redacted> --- kernel/trace/trace_kprobe.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/kernel/trace/trace_kprobe.c b/kernel/trace/trace_kprobe.c
index c4c6e0e0068b..7cbb43740b4f 100644
--- a/kernel/trace/trace_kprobe.c
+++ b/kernel/trace/trace_kprobe.c@@ -779,6 +779,7 @@ static int __trace_kprobe_create(int argc, const char *argv[]) char buf[MAX_EVENT_NAME_LEN]; char gbuf[MAX_EVENT_NAME_LEN]; char abuf[MAX_BTF_ARGS_LEN]; + char *dbuf = NULL; struct traceprobe_parse_context ctx = { .flags = TPARG_FL_KERNEL }; switch (argv[0][0]) {
@@ -930,6 +931,10 @@ static int __trace_kprobe_create(int argc, const char *argv[]) argv = new_argv; } + ret = traceprobe_expand_dentry_args(argc, argv, &dbuf); + if (ret) + goto out; + /* setup a probe */ tk = alloc_trace_kprobe(group, event, addr, symbol, offset, maxactive, argc, is_return);
@@ -971,6 +976,7 @@ static int __trace_kprobe_create(int argc, const char *argv[]) trace_probe_log_clear(); kfree(new_argv); kfree(symbol); + kfree(dbuf); return ret; parse_error:
--
2.31.1