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perf: Remove redundant condition for AUX buffer size

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It is already checked whether the VMA size is the same as
nr_pages * PAGE_SIZE, so later checking both:

      aux_size == vma_size && aux_size == nr_pages * PAGE_SIZE

is redundant. Remove the vma_size check as nr_pages is what is actually
used in the allocation function. That prepares for splitting out the buffer
allocation into separate functions, so that only nr_pages needs to be
handed in.

No functional change.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Link: https://lore.kernel.org/r/20250812104018.424519320@infradead.org
This commit is contained in:
Thomas Gleixner
2025-08-15 13:12:58 +02:00
committed by Peter Zijlstra
parent 8f5ae30d69
commit e8c4f6ee8e
1 changed files with 1 additions and 1 deletions
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kernel/events/core.c
+1 -1
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@@ -7043,7 +7043,7 @@ static int perf_mmap(struct file *file, struct vm_area_struct *vma)
if (rb_has_aux(rb) && rb->aux_pgoff != vma->vm_pgoff)
goto aux_unlock;
if (aux_size != vma_size || aux_size != nr_pages * PAGE_SIZE)
if (aux_size != nr_pages * PAGE_SIZE)
goto aux_unlock;
/* already mapped with a different size */