tracing: Change offset type to s32 in preempt/irq tracepoints

Discussion in the below link reported that symbols in modules can appear
to be before _stext on ARM architecture, causing wrapping with the
offsets of this tracepoint. Change the offset type to s32 to fix this.

Link: http://lore.kernel.org/r/[email protected]
Link: http://lkml.kernel.org/r/[email protected]

Cc: Bjorn Helgaas <[email protected]>
Cc: David Sterba <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Mike Rapoport <[email protected]>
Cc: "Rafael J. Wysocki" <[email protected]>
Cc: Sakari Ailus <[email protected]>
Cc: Antonio Borneo <[email protected]>
Cc: [email protected]
Fixes: d59158162e032 ("tracing: Add support for preempt and irq enable/disable events")
Signed-off-by: Joel Fernandes (Google) <[email protected]>
Signed-off-by: Steven Rostedt (VMware) <[email protected]>

1 files changed, 4 insertions, 4 deletions

diff --git a/include/trace/events/preemptirq.h b/include/trace/events/preemptirq.h
index 95fba0471e5b..3f249e150c0c 100644
--- a/include/trace/events/preemptirq.h
+++ b/include/trace/events/preemptirq.h
@@ -18,13 +18,13 @@ DECLARE_EVENT_CLASS(preemptirq_template,
 	TP_ARGS(ip, parent_ip),
 
 	TP_STRUCT__entry(
-		__field(u32, caller_offs)
-		__field(u32, parent_offs)
+		__field(s32, caller_offs)
+		__field(s32, parent_offs)
 	),
 
 	TP_fast_assign(
-		__entry->caller_offs = (u32)(ip - (unsigned long)_stext);
-		__entry->parent_offs = (u32)(parent_ip - (unsigned long)_stext);
+		__entry->caller_offs = (s32)(ip - (unsigned long)_stext);
+		__entry->parent_offs = (s32)(parent_ip - (unsigned long)_stext);
 	),
 
 	TP_printk("caller=%pS parent=%pS",