Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
unwind: Simplify unwind_reset_info()
Invert the condition of the first if and make it an early exit to
reduce an indent level for the rest fo the function.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Link: https://patch.msgid.link/20250924080118.777916262@infradead.org
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include/linux/unwind_deferred.h
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-13
include/linux/unwind_deferred.h
···
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static __always_inline void unwind_reset_info(void)
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{
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struct unwind_task_info *info = ¤t->unwind_info;
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-
unsigned long bits;
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+
unsigned long bits = info->unwind_mask;
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/* Was there any unwinding? */
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-
if (unlikely(info->unwind_mask)) {
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-
bits = info->unwind_mask;
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-
do {
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-
/* Is a task_work going to run again before going back */
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if (bits & UNWIND_PENDING)
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-
return;
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} while (!try_cmpxchg(&info->unwind_mask, &bits, 0UL));
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current->unwind_info.id.id = 0;
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if (likely(!bits))
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return;
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-
if (unlikely(info->cache)) {
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-
info->cache->nr_entries = 0;
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-
info->cache->unwind_completed = 0;
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-
}
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do {
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/* Is a task_work going to run again before going back */
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if (bits & UNWIND_PENDING)
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return;
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} while (!try_cmpxchg(&info->unwind_mask, &bits, 0UL));
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current->unwind_info.id.id = 0;
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+
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if (unlikely(info->cache)) {
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info->cache->nr_entries = 0;
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info->cache->unwind_completed = 0;
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}
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}
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