Commit 3518414d authored Nov 03, 2016 by Mark Rutland Committed by Olav Haugan Jul 11, 2017

arm64: thread_info remove stale items



We have a comment claiming __switch_to() cares about where cpu_context
is located relative to cpu_domain in thread_info. However arm64 has
never had a thread_info::cpu_domain field, and neither __switch_to nor
cpu_switch_to care where the cpu_context field is relative to others.

Additionally, the init_thread_info alias is never used anywhere in the
kernel, and will shortly become problematic when thread_info is moved
into task_struct.

This patch removes both.

Change-Id: I42accfe3312220ef2ecd6079626d8a38847785a1
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Tested-by: Laura Abbott <labbott@redhat.com>
Cc: James Morse <james.morse@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Git-commit: dcbe02855f048fdf1e13ebc697e83c8d297f9f5a
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git


Signed-off-by: Olav Haugan <ohaugan@codeaurora.org>

parent b51386ba

arch/arm64/include/asm/thread_info.h

+0 −2

Original line number	Diff line number	Diff line
		@@ -43,7 +43,6 @@ typedef unsigned long mm_segment_t;

		/*
		* low level task data that entry.S needs immediate access to.
		* __switch_to() assumes cpu_context follows immediately after cpu_domain.
		*/
		struct thread_info {
		unsigned long flags; /* low level flags */
		@@ -60,7 +59,6 @@ struct thread_info {
		.addr_limit = KERNEL_DS, \
		}

		#define init_thread_info (init_thread_union.thread_info)
		#define init_stack (init_thread_union.stack)

		#define thread_saved_pc(tsk) \