perf trace: Allow associating scnprintf routines with well known arg names (5d88099b) · Commits · 戴 / test

tools/perf/builtin-trace.c

+26 −0

Original line number	Diff line number	Diff line
		@@ -1479,6 +1479,27 @@ static int syscall__alloc_arg_fmts(struct syscall *sc, int nr_args)
		return 0;
		}

		static struct syscall_arg_fmt syscall_arg_fmts__by_name[] = {
		};

		static int syscall_arg_fmt__cmp(const void name, const void fmtp)
		{
		const struct syscall_arg_fmt *fmt = fmtp;
		return strcmp(name, fmt->name);
		}

		static struct syscall_arg_fmt *
		__syscall_arg_fmt__find_by_name(struct syscall_arg_fmt fmts, const int nmemb, const char name)
		{
		return bsearch(name, fmts, nmemb, sizeof(struct syscall_arg_fmt), syscall_arg_fmt__cmp);
		}

		static struct syscall_arg_fmt syscall_arg_fmt__find_by_name(const char name)
		{
		const int nmemb = ARRAY_SIZE(syscall_arg_fmts__by_name);
		return __syscall_arg_fmt__find_by_name(syscall_arg_fmts__by_name, nmemb, name);
		}

		static struct tep_format_field *
		syscall_arg_fmt__init_array(struct syscall_arg_fmt arg, struct tep_format_field field)
		{
		@@ -1518,6 +1539,11 @@ syscall_arg_fmt__init_array(struct syscall_arg_fmt *arg, struct tep_format_field
		* 7 unsigned long
		*/
		arg->scnprintf = SCA_FD;
		} else {
		struct syscall_arg_fmt *fmt = syscall_arg_fmt__find_by_name(field->name);

		if (fmt)
		arg->scnprintf = fmt->scnprintf;
		}
		}