arch/tile: support new info op generated by compiler
This just syncs the backtracing support in the kernel to the
upstream backtrace library.
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
diff --git a/arch/tile/include/asm/backtrace.h b/arch/tile/include/asm/backtrace.h
index 758ca46..f18887d 100644
--- a/arch/tile/include/asm/backtrace.h
+++ b/arch/tile/include/asm/backtrace.h
@@ -146,7 +146,10 @@
CALLER_SP_IN_R52_BASE = 4,
- CALLER_SP_OFFSET_BASE = 8
+ CALLER_SP_OFFSET_BASE = 8,
+
+ /* Marks the entry point of certain functions. */
+ ENTRY_POINT_INFO_OP = 16
};
diff --git a/arch/tile/kernel/backtrace.c b/arch/tile/kernel/backtrace.c
index d3c41c1..55a6a74 100644
--- a/arch/tile/kernel/backtrace.c
+++ b/arch/tile/kernel/backtrace.c
@@ -369,6 +369,10 @@
/* Weird; reserved value, ignore it. */
continue;
}
+ if (info_operand & ENTRY_POINT_INFO_OP) {
+ /* This info op is ignored by the backtracer. */
+ continue;
+ }
/* Skip info ops which are not in the
* "one_ago" mode we want right now.