Commit 42b9138f authored by Peter Zijlstra's avatar Peter Zijlstra
Browse files

unwind: Simplify unwind_user_faultable() 



Signed-off-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
Link: https://patch.msgid.link/20250924080119.271671514@infradead.org
parent 1e74829f

kernel/unwind/deferred.c

+6 −9
Original line number Diff line number Diff line
@@ -128,17 +128,14 @@ int unwind_user_faultable(struct unwind_stacktrace *trace) 


	cache = info->cache;

	trace->entries = cache->entries;



	if (cache->nr_entries) {

	trace->nr = cache->nr_entries;

	/*

	 * The user stack has already been previously unwound in this

	 * entry context.  Skip the unwind and use the cache.

	 */

		trace->nr = cache->nr_entries;

	if (trace->nr)

		return 0;

	}



	trace->nr = 0;

	unwind_user(trace, UNWIND_MAX_ENTRIES);



	cache->nr_entries = trace->nr;