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From: Peter Zijlstra <peterz@infradead.org>
To: tglx@linutronix.de
Cc: linux-kernel@vger.kernel.org, peterz@infradead.org,
	torvalds@linuxfoundation.org, mingo@kernel.org,
	namhyung@kernel.org, acme@redhat.com, kees@kernel.org
Subject: [PATCH v3 09/15] perf: Reflow to get rid of aux_success label
Date: Tue, 12 Aug 2025 12:39:07 +0200	[thread overview]
Message-ID: <20250812104019.362581570@infradead.org> (raw)
In-Reply-To: 20250812103858.234850285@infradead.org

Mostly re-indent noise needed to get rid of that label.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
---
 kernel/events/core.c |   37 ++++++++++++++++++-------------------
 1 file changed, 18 insertions(+), 19 deletions(-)

--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -7127,30 +7127,29 @@ static int perf_mmap(struct file *file,
 		if (rb_has_aux(rb)) {
 			atomic_inc(&rb->aux_mmap_count);
 			ret = 0;
-			goto aux_success;
-		}
 
-		if (!perf_mmap_calc_limits(vma, &user_extra, &extra)) {
-			ret = -EPERM;
-			atomic_dec(&rb->mmap_count);
-			goto unlock;
-		}
+		} else {
+			if (!perf_mmap_calc_limits(vma, &user_extra, &extra)) {
+				ret = -EPERM;
+				atomic_dec(&rb->mmap_count);
+				goto unlock;
+			}
 
-		WARN_ON(!rb && event->rb);
+			WARN_ON(!rb && event->rb);
 
-		if (vma->vm_flags & VM_WRITE)
-			flags |= RING_BUFFER_WRITABLE;
+			if (vma->vm_flags & VM_WRITE)
+				flags |= RING_BUFFER_WRITABLE;
 
-		ret = rb_alloc_aux(rb, event, vma->vm_pgoff, nr_pages,
-				   event->attr.aux_watermark, flags);
-		if (ret) {
-			atomic_dec(&rb->mmap_count);
-			goto unlock;
-		}
+			ret = rb_alloc_aux(rb, event, vma->vm_pgoff, nr_pages,
+					   event->attr.aux_watermark, flags);
+			if (ret) {
+				atomic_dec(&rb->mmap_count);
+				goto unlock;
+			}
 
-		atomic_set(&rb->aux_mmap_count, 1);
-		rb->aux_mmap_locked = extra;
-aux_success:
+			atomic_set(&rb->aux_mmap_count, 1);
+			rb->aux_mmap_locked = extra;
+		}
 		perf_mmap_account(vma, user_extra, extra);
 		atomic_inc(&event->mmap_count);
 	}



  parent reply	other threads:[~2025-08-12 10:46 UTC|newest]

Thread overview: 54+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-08-12 10:38 [PATCH v3 00/15] perf: Convert mmap() related reference counts to refcount_t Peter Zijlstra
2025-08-12 10:38 ` [PATCH v3 01/15] perf: Remove redundant condition for AUX buffer size Peter Zijlstra
2025-08-13  5:35   ` Lorenzo Stoakes
2025-08-18 10:23   ` [tip: perf/core] " tip-bot2 for Thomas Gleixner
2025-08-12 10:39 ` [PATCH v3 02/15] perf: Split out mlock limit handling Peter Zijlstra
2025-08-13  5:36   ` Lorenzo Stoakes
2025-08-18 10:22   ` [tip: perf/core] " tip-bot2 for Thomas Gleixner
2025-08-12 10:39 ` [PATCH v3 03/15] perf: Split out VM accounting Peter Zijlstra
2025-08-13  5:37   ` Lorenzo Stoakes
2025-08-18 10:22   ` [tip: perf/core] " tip-bot2 for Thomas Gleixner
2025-08-12 10:39 ` [PATCH v3 04/15] perf: Move perf_mmap_calc_limits() into both rb and aux branches Peter Zijlstra
2025-08-13  5:28   ` Lorenzo Stoakes
2025-08-18 10:22   ` [tip: perf/core] " tip-bot2 for Peter Zijlstra
2025-08-12 10:39 ` [PATCH v3 05/15] perf: Merge consecutive conditionals in perf_mmap() Peter Zijlstra
2025-08-13  5:41   ` Lorenzo Stoakes
2025-08-18 10:22   ` [tip: perf/core] " tip-bot2 for Peter Zijlstra
2025-08-12 10:39 ` [PATCH v3 06/15] perf: Move common code into both rb and aux branches Peter Zijlstra
2025-08-13  5:55   ` Lorenzo Stoakes
2025-08-13  8:25     ` Peter Zijlstra
2025-08-13  8:27       ` Lorenzo Stoakes
2025-08-18 10:22   ` [tip: perf/core] " tip-bot2 for Peter Zijlstra
2025-08-12 10:39 ` [PATCH v3 07/15] perf: Remove redundant aux_unlock label Peter Zijlstra
2025-08-13  5:56   ` Lorenzo Stoakes
2025-08-18 10:22   ` [tip: perf/core] " tip-bot2 for Peter Zijlstra
2025-08-12 10:39 ` [PATCH v3 08/15] perf: Use guard() for aux_mutex in perf_mmap() Peter Zijlstra
2025-08-13  6:00   ` Lorenzo Stoakes
2025-08-18 10:22   ` [tip: perf/core] " tip-bot2 for Peter Zijlstra
2025-08-12 10:39 ` Peter Zijlstra [this message]
2025-08-13  6:03   ` [PATCH v3 09/15] perf: Reflow to get rid of aux_success label Lorenzo Stoakes
2025-08-13  8:29     ` Peter Zijlstra
2025-08-18 10:22   ` [tip: perf/core] " tip-bot2 for Peter Zijlstra
2025-08-12 10:39 ` [PATCH v3 10/15] perf: Split out the AUX buffer allocation Peter Zijlstra
2025-08-13  6:10   ` Lorenzo Stoakes
2025-08-18 10:22   ` [tip: perf/core] " tip-bot2 for Peter Zijlstra
2025-08-12 10:39 ` [PATCH v3 11/15] perf: Make RB allocation branch self sufficient Peter Zijlstra
2025-08-13  6:24   ` Lorenzo Stoakes
2025-08-18 10:22   ` [tip: perf/core] " tip-bot2 for Peter Zijlstra
2025-08-12 10:39 ` [PATCH v3 12/15] perf: Split out the RB allocation Peter Zijlstra
2025-08-13  6:35   ` Lorenzo Stoakes
2025-08-18 10:22   ` [tip: perf/core] " tip-bot2 for Peter Zijlstra
2025-08-12 10:39 ` [PATCH v3 13/15] perf: Use scoped_guard() for mmap_mutex in perf_mmap() Peter Zijlstra
2025-08-13  6:42   ` Lorenzo Stoakes
2025-08-13  8:32     ` Peter Zijlstra
2025-08-13  8:44       ` Peter Zijlstra
2025-08-13  8:52         ` Lorenzo Stoakes
2025-08-18 10:22   ` [tip: perf/core] " tip-bot2 for Peter Zijlstra
2025-08-12 10:39 ` [PATCH v3 14/15] perf: Identify the 0->1 transition for event::mmap_count Peter Zijlstra
2025-08-12 11:15   ` Peter Zijlstra
2025-08-13  6:53     ` Lorenzo Stoakes
2025-08-18 10:22   ` [tip: perf/core] " tip-bot2 for Peter Zijlstra
2025-08-12 10:39 ` [PATCH v3 15/15] perf: Convert mmap() refcounts to refcount_t Peter Zijlstra
2025-08-13  7:09   ` Lorenzo Stoakes
2025-08-18 10:22   ` [tip: perf/core] " tip-bot2 for Thomas Gleixner
2025-08-13  7:11 ` [PATCH v3 00/15] perf: Convert mmap() related reference counts " Lorenzo Stoakes

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