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Subject[PATCH v5 4/4] arm64: is_compat_task is defined both in asm/compat.h and linux/compat.h
Date
Some kernel files may include both linux/compat.h and asm/compat.h directly
or indirectly. Since both header files contain is_compat_task() under
!CONFIG_COMPAT, compiling them with !CONFIG_COMPAT will eventually fail.
Such files include kernel/auditsc.c, kernel/seccomp.c and init/do_mountfs.c
(do_mountfs.c may read asm/compat.h via asm/ftrace.h once ftrace is
implemented).

So this patch proactively
1) removes is_compat_task() under !CONFIG_COMPAT from asm/compat.h
2) replaces asm/compat.h to linux/compat.h in kernel/*.c,
but asm/compat.h is still necessary in ptrace.c and process.c because
they use is_compat_thread().

Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
---
arch/arm64/include/asm/compat.h | 5 -----
arch/arm64/kernel/hw_breakpoint.c | 2 +-
arch/arm64/kernel/process.c | 1 +
arch/arm64/kernel/ptrace.c | 1 +
arch/arm64/kernel/signal.c | 2 +-
5 files changed, 4 insertions(+), 7 deletions(-)

diff --git a/arch/arm64/include/asm/compat.h b/arch/arm64/include/asm/compat.h
index fda2704..3b334f9 100644
--- a/arch/arm64/include/asm/compat.h
+++ b/arch/arm64/include/asm/compat.h
@@ -305,11 +305,6 @@ static inline int is_compat_thread(struct thread_info *thread)

#else /* !CONFIG_COMPAT */

-static inline int is_compat_task(void)
-{
- return 0;
-}
-
static inline int is_compat_thread(struct thread_info *thread)
{
return 0;
diff --git a/arch/arm64/kernel/hw_breakpoint.c b/arch/arm64/kernel/hw_breakpoint.c
index f17f581..a45e2db 100644
--- a/arch/arm64/kernel/hw_breakpoint.c
+++ b/arch/arm64/kernel/hw_breakpoint.c
@@ -20,6 +20,7 @@

#define pr_fmt(fmt) "hw-breakpoint: " fmt

+#include <linux/compat.h>
#include <linux/cpu_pm.h>
#include <linux/errno.h>
#include <linux/hw_breakpoint.h>
@@ -27,7 +28,6 @@
#include <linux/ptrace.h>
#include <linux/smp.h>

-#include <asm/compat.h>
#include <asm/current.h>
#include <asm/debug-monitors.h>
#include <asm/hw_breakpoint.h>
diff --git a/arch/arm64/kernel/process.c b/arch/arm64/kernel/process.c
index 1c0a9be..fc8a387 100644
--- a/arch/arm64/kernel/process.c
+++ b/arch/arm64/kernel/process.c
@@ -20,6 +20,7 @@

#include <stdarg.h>

+#include <linux/compat.h>
#include <linux/export.h>
#include <linux/sched.h>
#include <linux/kernel.h>
diff --git a/arch/arm64/kernel/ptrace.c b/arch/arm64/kernel/ptrace.c
index f606276..c47a3ed 100644
--- a/arch/arm64/kernel/ptrace.c
+++ b/arch/arm64/kernel/ptrace.c
@@ -19,6 +19,7 @@
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/

+#include <linux/compat.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/mm.h>
diff --git a/arch/arm64/kernel/signal.c b/arch/arm64/kernel/signal.c
index 890a591..4a09989 100644
--- a/arch/arm64/kernel/signal.c
+++ b/arch/arm64/kernel/signal.c
@@ -17,6 +17,7 @@
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/

+#include <linux/compat.h>
#include <linux/errno.h>
#include <linux/signal.h>
#include <linux/personality.h>
@@ -25,7 +26,6 @@
#include <linux/tracehook.h>
#include <linux/ratelimit.h>

-#include <asm/compat.h>
#include <asm/debug-monitors.h>
#include <asm/elf.h>
#include <asm/cacheflush.h>
--
1.8.3.2


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