diff options
| author | Peter Zijlstra <peterz@infradead.org> | 2025-09-22 15:49:14 +0200 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2025-10-29 10:29:56 +0100 |
| commit | 42b9138f81fc22c36128f9524bb21bc9eabfb1b8 (patch) | |
| tree | 52471861ca3ad3a4a93f2b10abe4458bf2fe3a11 | |
| parent | 1e74829f36b5db19afc3d17f0a3750e9573710ae (diff) | |
unwind: Simplify unwind_user_faultable()
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://patch.msgid.link/20250924080119.271671514@infradead.org
| -rw-r--r-- | kernel/unwind/deferred.c | 15 |
1 files changed, 6 insertions, 9 deletions
diff --git a/kernel/unwind/deferred.c b/kernel/unwind/deferred.c index 6395192d7225..09617d8ae24b 100644 --- a/kernel/unwind/deferred.c +++ b/kernel/unwind/deferred.c @@ -128,17 +128,14 @@ int unwind_user_faultable(struct unwind_stacktrace *trace) cache = info->cache; trace->entries = cache->entries; - - if (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; + trace->nr = cache->nr_entries; + /* + * The user stack has already been previously unwound in this + * entry context. Skip the unwind and use the cache. + */ + if (trace->nr) return 0; - } - trace->nr = 0; unwind_user(trace, UNWIND_MAX_ENTRIES); cache->nr_entries = trace->nr; |