[PATCH] powerpc/mm: Use VM_WARN_ONCE() for irqs disabled check

[Michael Ellerman]

The check for !arch_irqs_disabled() in find_linux_pte_or_hugepte() is a
debugging aid, and needn't be enabled for production builds.

Switch it to a VM_WARN_ONCE(), which is compiled out when
CONFIG_DEBUG_VM=n.

Signed-off-by: Michael Ellerman <mpe at ellerman.id.au>
---
 arch/powerpc/include/asm/pgtable.h | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/arch/powerpc/include/asm/pgtable.h b/arch/powerpc/include/asm/pgtable.h
index ee09e99097f0..651848039dc4 100644
--- a/arch/powerpc/include/asm/pgtable.h
+++ b/arch/powerpc/include/asm/pgtable.h
@@ -71,10 +71,8 @@ pte_t *__find_linux_pte_or_hugepte(pgd_t *pgdir, unsigned long ea,
 static inline pte_t *find_linux_pte_or_hugepte(pgd_t *pgdir, unsigned long ea,
 					       bool *is_thp, unsigned *shift)
 {
-	if (!arch_irqs_disabled()) {
-		pr_info("%s called with irq enabled\n", __func__);
-		dump_stack();
-	}
+	VM_WARN_ONCE(!arch_irqs_disabled(),
+		     "find_linux_pte_or_hugepte() called with irqs enabled!\n");
 	return __find_linux_pte_or_hugepte(pgdir, ea, is_thp, shift);
 }
 
-- 
2.5.0