linux-kernel - [PATCH 3.16 166/294] alpha: uapi: Add support for __SANE_USERSPACE_TYPES_

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Date:   Mon, 06 Nov 2017 23:03:02 +0000
From:   Ben Hutchings <ben@...adent.org.uk>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:     akpm@...ux-foundation.org, "Matt Turner" <mattst88@...il.com>,
        "Michael Cree" <mcree@...on.net.nz>
Subject: [PATCH 3.16 166/294] alpha: uapi: Add support for __SANE_USERSPACE_TYPES__

3.16.50-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Ben Hutchings <ben@...adent.org.uk>

commit cec80d82142ab25c71eee24b529cfeaf17c43062 upstream.

This fixes compiler errors in perf such as:

tests/attr.c: In function 'store_event':
tests/attr.c:66:27: error: format '%llu' expects argument of type 'long long unsigned int', but argument 6 has type '__u64 {aka long unsigned int}' [-Werror=format=]
  snprintf(path, PATH_MAX, "%s/event-%d-%llu-%d", dir,
                           ^

Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
Tested-by: Michael Cree <mcree@...on.net.nz>
Signed-off-by: Matt Turner <mattst88@...il.com>
---
 arch/alpha/include/asm/types.h      |  2 +-
 arch/alpha/include/uapi/asm/types.h | 12 +++++++++++-
 2 files changed, 12 insertions(+), 2 deletions(-)

--- a/arch/alpha/include/asm/types.h
+++ b/arch/alpha/include/asm/types.h
@@ -1,7 +1,6 @@
 #ifndef _ALPHA_TYPES_H
 #define _ALPHA_TYPES_H
 
-#include <asm-generic/int-ll64.h>
 #include <uapi/asm/types.h>
 
 #endif /* _ALPHA_TYPES_H */
--- a/arch/alpha/include/uapi/asm/types.h
+++ b/arch/alpha/include/uapi/asm/types.h
@@ -9,8 +9,18 @@
  * need to be careful to avoid a name clashes.
  */
 
-#ifndef __KERNEL__
+/*
+ * This is here because we used to use l64 for alpha
+ * and we don't want to impact user mode with our change to ll64
+ * in the kernel.
+ *
+ * However, some user programs are fine with this.  They can
+ * flag __SANE_USERSPACE_TYPES__ to get int-ll64.h here.
+ */
+#if !defined(__SANE_USERSPACE_TYPES__) && !defined(__KERNEL__)
 #include <asm-generic/int-l64.h>
+#else
+#include <asm-generic/int-ll64.h>
 #endif
 
 #endif /* _UAPI_ALPHA_TYPES_H */