drm: Remove the ULONG_MAX stack trace hackery

No architecture terminates the stack trace with ULONG_MAX anymore. Remove the cruft. Signed-off-by: Thomas Gleixner <[email protected]> Acked-by: Peter Zijlstra (Intel) <[email protected]> Cc: Josh Poimboeuf <[email protected]> Cc: Andy Lutomirski <[email protected]> Cc: Steven Rostedt <[email protected]> Cc: Alexander Potapenko <[email protected]> Cc: [email protected] Cc: Joonas Lahtinen <[email protected]> Cc: Maarten Lankhorst <[email protected]> Cc: [email protected] Cc: David Airlie <[email protected]> Cc: Jani Nikula <[email protected]> Cc: Daniel Vetter <[email protected]> Cc: Rodrigo Vivi <[email protected]> Link: https://lkml.kernel.org/r/[email protected]
niw · Apr 14, 2019 · fa49e2e · fa49e2e
1 parent accddc4
commit fa49e2e
Show file tree

Hide file tree

Showing 2 changed files with 0 additions and 7 deletions.
diff --git a/drivers/gpu/drm/drm_mm.c b/drivers/gpu/drm/drm_mm.c
@@ -113,9 +113,6 @@ static noinline void save_stack(struct drm_mm_node *node)
 	};
 
 	save_stack_trace(&trace);
-	if (trace.nr_entries != 0 &&
-	    trace.entries[trace.nr_entries-1] == ULONG_MAX)
-		trace.nr_entries--;
 
 	/* May be called under spinlock, so avoid sleeping */
 	node->stack = depot_save_stack(&trace, GFP_NOWAIT);

diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.c b/drivers/gpu/drm/i915/intel_runtime_pm.c
@@ -67,10 +67,6 @@ static noinline depot_stack_handle_t __save_depot_stack(void)
 	};
 
 	save_stack_trace(&trace);
-	if (trace.nr_entries &&
-	    trace.entries[trace.nr_entries - 1] == ULONG_MAX)
-		trace.nr_entries--;
-
 	return depot_save_stack(&trace, GFP_NOWAIT | __GFP_NOWARN);
 }