linux-stable.git/arch/arm/include/asm/syscall.h, branch linux-3.5.y Linux kernel stable tree ARM: 7548/1: include linux/sched.h in syscall.h 2012-10-12T20:46:53+00:00 Wade Farnsworth wade_farnsworth@mentor.com 2012-10-02T16:08:30+00:00 a13cda3e7a332b57823986b4705216ea5ee1509f commit 8ef102c6b4bc996ff96ca52b34775fe931ec90c9 upstream. The syscall tracing patch introduces a compile bug in lttng-modules when the latter calls syscall_get_nr(), similar to the following: <path-to-linux>/arch/arm/include/asm/syscall.h:21:2: error: implicit declaration of function 'task_thread_info' [-Werror=implicit-function-declaration] The issue is that we are using task_thread_info() in the syscall_get_nr() function in asm/syscall.h, but not explicitly including sched.h from this file, so we can expect this bug might surface any time that syscall_get_nr() is called. Explicitly including sched.h solves the problem. Signed-off-by: Wade Farnsworth <wade_farnsworth@mentor.com> Acked-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 8ef102c6b4bc996ff96ca52b34775fe931ec90c9 upstream.

The syscall tracing patch introduces a compile bug in lttng-modules
when the latter calls syscall_get_nr(), similar to the following:

<path-to-linux>/arch/arm/include/asm/syscall.h:21:2: error: implicit declaration of function 'task_thread_info' [-Werror=implicit-function-declaration]

The issue is that we are using task_thread_info() in the
syscall_get_nr() function in asm/syscall.h, but not explicitly
including sched.h from this file, so we can expect this bug might
surface any time that syscall_get_nr() is called.

Explicitly including sched.h solves the problem.

Signed-off-by: Wade Farnsworth <wade_farnsworth@mentor.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
ARM: 7373/1: add support for the generic syscall.h interface 2012-04-25T18:49:27+00:00 Wade Farnsworth wade_farnsworth@mentor.com 2012-04-04T15:19:02+00:00 bf2c9f9866928df60157bc4f1ab39f93a32c754e Supplying the asm-generic/syscall.h interface is a pre-requisite for HAVE_ARCH_TRACEHOOK Signed-off-by: Steven Walter <stevenrwalter@gmail.com> Signed-off-by: Wade Farnsworth <wade_farnsworth@mentor.com> Reviewed-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> 
Supplying the asm-generic/syscall.h interface is a
pre-requisite for HAVE_ARCH_TRACEHOOK

Signed-off-by: Steven Walter <stevenrwalter@gmail.com>
Signed-off-by: Wade Farnsworth <wade_farnsworth@mentor.com>
Reviewed-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>