Commit 761ef342 authored by Ilya Leoshkevich's avatar Ilya Leoshkevich Committed by Steven Rostedt (Google)
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ftrace: Expose call graph depth as unsigned int 

Depth is stored as int because the code uses negative values to break
out of iterations. But what is recorded is always zero or positive. So
expose it as unsigned int instead of int.

Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Sven Schnelle <svens@linux.ibm.com>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Link: https://lore.kernel.org/20250412221847.17310-3-iii@linux.ibm.com


Signed-off-by: default avatarIlya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: default avatarSteven Rostedt (Google) <rostedt@goodmis.org>
parent 88cefd99

kernel/trace/trace_entries.h

+6 −6
Original line number Diff line number Diff line
@@ -97,11 +97,11 @@ FTRACE_ENTRY_PACKED(fgraph_retaddr_entry, fgraph_retaddr_ent_entry, 
	F_STRUCT(

		__field_struct(	struct fgraph_retaddr_ent,	graph_ent	)

		__field_packed(	unsigned long,	graph_ent,	func		)

		__field_packed(	int,		graph_ent,	depth		)

		__field_packed(	unsigned int,	graph_ent,	depth		)

		__field_packed(	unsigned long,	graph_ent,	retaddr		)

	),



	F_printk("--> %ps (%d) <- %ps", (void *)__entry->func, __entry->depth,

	F_printk("--> %ps (%u) <- %ps", (void *)__entry->func, __entry->depth,

		(void *)__entry->retaddr)

);
@@ -124,13 +124,13 @@ FTRACE_ENTRY_PACKED(funcgraph_exit, ftrace_graph_ret_entry, 
		__field_struct(	struct ftrace_graph_ret,	ret	)

		__field_packed(	unsigned long,	ret,		func	)

		__field_packed(	unsigned long,	ret,		retval	)

		__field_packed(	int,		ret,		depth	)

		__field_packed(	unsigned int,	ret,		depth	)

		__field_packed(	unsigned int,	ret,		overrun	)

		__field(unsigned long long,	calltime		)

		__field(unsigned long long,	rettime			)

	),



	F_printk("<-- %ps (%d) (start: %llx  end: %llx) over: %d retval: %lx",

	F_printk("<-- %ps (%u) (start: %llx  end: %llx) over: %u retval: %lx",

		 (void *)__entry->func, __entry->depth,

		 __entry->calltime, __entry->rettime,

		 __entry->depth, __entry->retval)
@@ -146,13 +146,13 @@ FTRACE_ENTRY_PACKED(funcgraph_exit, ftrace_graph_ret_entry, 
	F_STRUCT(

		__field_struct(	struct ftrace_graph_ret,	ret	)

		__field_packed(	unsigned long,	ret,		func	)

		__field_packed(	int,		ret,		depth	)

		__field_packed(	unsigned int,	ret,		depth	)

		__field_packed(	unsigned int,	ret,		overrun	)

		__field(unsigned long long,	calltime		)

		__field(unsigned long long,	rettime			)

	),



	F_printk("<-- %ps (%d) (start: %llx  end: %llx) over: %d",

	F_printk("<-- %ps (%u) (start: %llx  end: %llx) over: %u",

		 (void *)__entry->func, __entry->depth,

		 __entry->calltime, __entry->rettime,

		 __entry->depth)