Commit 01de982a authored by Wolfgang Mauerer's avatar Wolfgang Mauerer Committed by Steven Rostedt
Browse files

tracing: Fix ftrace stack trace entries 

8 hex characters tell only half the tale for 64 bit CPUs,
so use the appropriate length.

Link: http://lkml.kernel.org/r/1332411501-8059-2-git-send-email-wolfgang.mauerer@siemens.com



Cc: stable@vger.kernel.org
Signed-off-by: default avatarWolfgang Mauerer <wolfgang.mauerer@siemens.com>
Signed-off-by: default avatarSteven Rostedt <rostedt@goodmis.org>
parent 89c5bd08

kernel/trace/trace_entries.h

+12 −4
Original line number Diff line number Diff line
@@ -156,6 +156,12 @@ FTRACE_ENTRY_DUP(wakeup, ctx_switch_entry, 


#define FTRACE_STACK_ENTRIES	8



#ifndef CONFIG_64BIT

# define IP_FMT "%08lx"

#else

# define IP_FMT "%016lx"

#endif



FTRACE_ENTRY(kernel_stack, stack_entry,



	TRACE_STACK,
@@ -165,8 +171,9 @@ FTRACE_ENTRY(kernel_stack, stack_entry, 
		__dynamic_array(unsigned long,	caller	)

	),



	F_printk("\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n"

		 "\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n",

	F_printk("\t=> (" IP_FMT ")\n\t=> (" IP_FMT ")\n\t=> (" IP_FMT ")\n"

		 "\t=> (" IP_FMT ")\n\t=> (" IP_FMT ")\n\t=> (" IP_FMT ")\n"

		 "\t=> (" IP_FMT ")\n\t=> (" IP_FMT ")\n",

		 __entry->caller[0], __entry->caller[1], __entry->caller[2],

		 __entry->caller[3], __entry->caller[4], __entry->caller[5],

		 __entry->caller[6], __entry->caller[7])
@@ -181,8 +188,9 @@ FTRACE_ENTRY(user_stack, userstack_entry, 
		__array(	unsigned long,	caller, FTRACE_STACK_ENTRIES	)

	),



	F_printk("\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n"

		 "\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n",

	F_printk("\t=> (" IP_FMT ")\n\t=> (" IP_FMT ")\n\t=> (" IP_FMT ")\n"

		 "\t=> (" IP_FMT ")\n\t=> (" IP_FMT ")\n\t=> (" IP_FMT ")\n"

		 "\t=> (" IP_FMT ")\n\t=> (" IP_FMT ")\n",

		 __entry->caller[0], __entry->caller[1], __entry->caller[2],

		 __entry->caller[3], __entry->caller[4], __entry->caller[5],

		 __entry->caller[6], __entry->caller[7])

kernel/trace/trace_export.c

+1 −1
Original line number Diff line number Diff line
@@ -150,7 +150,7 @@ ftrace_define_fields_##name(struct ftrace_event_call *event_call) \ 
#define __dynamic_array(type, item)



#undef F_printk

#define F_printk(fmt, args...) #fmt ", "  __stringify(args)

#define F_printk(fmt, args...) __stringify(fmt) ", "  __stringify(args)



#undef FTRACE_ENTRY

#define FTRACE_ENTRY(call, struct_name, etype, tstruct, print)		\

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