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From: Christophe Leroy <christophe.leroy@c-s.fr>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
	Paul Mackerras <paulus@samba.org>,
	Michael Ellerman <mpe@ellerman.id.au>
Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org
Subject: [PATCH 4/5] powerpc/ptdump: get out of note_prot_wx() when CONFIG_PPC_DEBUG_WX is not selected.
Date: Wed, 14 Aug 2019 12:36:12 +0000 (UTC)	[thread overview]
Message-ID: <ff6c8f631bd4ce3a10e0cc241eb569816187bc20.1565786091.git.christophe.leroy@c-s.fr> (raw)
In-Reply-To: <eb4d626514e22f85814830012642329018ef6af9.1565786091.git.christophe.leroy@c-s.fr>

When CONFIG_PPC_DEBUG_WX, note_prot_wx() is useless.

Get out of it early and inconditionnally in that case,
so that GCC can kick all the code out.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
---
 arch/powerpc/mm/ptdump/ptdump.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/powerpc/mm/ptdump/ptdump.c b/arch/powerpc/mm/ptdump/ptdump.c
index 9a2186c133e6..ab6a572202b4 100644
--- a/arch/powerpc/mm/ptdump/ptdump.c
+++ b/arch/powerpc/mm/ptdump/ptdump.c
@@ -177,7 +177,7 @@ static void dump_addr(struct pg_state *st, unsigned long addr)
 
 static void note_prot_wx(struct pg_state *st, unsigned long addr)
 {
-	if (!st->check_wx)
+	if (!IS_ENABLED(CONFIG_PPC_DEBUG_WX) || !st->check_wx)
 		return;
 
 	if (!((st->current_flags & pgprot_val(PAGE_KERNEL_X)) == pgprot_val(PAGE_KERNEL_X)))
-- 
2.13.3


  parent reply	other threads:[~2019-08-14 12:39 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-14 12:36 [PATCH 1/5] powerpc/ptdump: fix addresses display on PPC32 Christophe Leroy
2019-08-14 12:36 ` [PATCH 2/5] powerpc/ptdump: fix walk_pagetables() address mismatch Christophe Leroy
2019-08-14 12:36 ` [PATCH 3/5] powerpc/ptdump: drop dummy KERN_VIRT_START on PPC32 Christophe Leroy
2019-08-14 12:36 ` Christophe Leroy [this message]
2019-08-14 12:36 ` [PATCH 5/5] powerpc/ptdump: drop non vital #ifdefs Christophe Leroy
2019-08-14 12:51 ` [PATCH 1/5] powerpc/ptdump: fix addresses display on PPC32 Christophe Leroy
2019-08-22 13:09 ` Michael Ellerman

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