[PATCH v5 4/8] tracing/probes: support '%pd/%pD' type for fprobe
From: Ye Bin <hidden>
Date: 2024-01-25 07:39:31
Also in:
lkml
Subsystem:
the rest, tracing · Maintainers:
Linus Torvalds, Steven Rostedt, Masami Hiramatsu
Support print type '%pd/%pD' for print dentry's or file's name. Signed-off-by: Ye Bin <redacted> --- kernel/trace/trace_fprobe.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/kernel/trace/trace_fprobe.c b/kernel/trace/trace_fprobe.c
index 7d2ddbcfa377..988d68e906ad 100644
--- a/kernel/trace/trace_fprobe.c
+++ b/kernel/trace/trace_fprobe.c@@ -976,6 +976,7 @@ static int __trace_fprobe_create(int argc, const char *argv[]) char gbuf[MAX_EVENT_NAME_LEN]; char sbuf[KSYM_NAME_LEN]; char abuf[MAX_BTF_ARGS_LEN]; + char *dbuf = NULL; bool is_tracepoint = false; struct tracepoint *tpoint = NULL; struct traceprobe_parse_context ctx = {
@@ -1086,6 +1087,10 @@ static int __trace_fprobe_create(int argc, const char *argv[]) argv = new_argv; } + ret = traceprobe_expand_dentry_args(argc, argv, &dbuf); + if (ret) + goto out; + /* setup a probe */ tf = alloc_trace_fprobe(group, event, symbol, tpoint, maxactive, argc, is_return);
@@ -1131,6 +1136,7 @@ static int __trace_fprobe_create(int argc, const char *argv[]) trace_probe_log_clear(); kfree(new_argv); kfree(symbol); + kfree(dbuf); return ret; parse_error:
--
2.31.1