Commit 5f56a5df authored May 20, 2016 by Jiri Slaby Committed by Linus Torvalds May 20, 2016

exit_thread: remove empty bodies



Define HAVE_EXIT_THREAD for archs which want to do something in
exit_thread. For others, let's define exit_thread as an empty inline.

This is a cleanup before we change the prototype of exit_thread to
accept a task parameter.

[akpm@linux-foundation.org: fix mips]
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
Cc: Aurelien Jacquiot <a-jacquiot@ti.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Chen Liqin <liqin.linux@gmail.com>
Cc: Chris Metcalf <cmetcalf@mellanox.com>
Cc: Chris Zankel <chris@zankel.net>
Cc: David Howells <dhowells@redhat.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
Cc: Haavard Skinnemoen <hskinnemoen@gmail.com>
Cc: Hans-Christian Egtvedt <egtvedt@samfundet.no>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Helge Deller <deller@gmx.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: Jesper Nilsson <jesper.nilsson@axis.com>
Cc: Jiri Slaby <jslaby@suse.cz>
Cc: Jonas Bonn <jonas@southpole.se>
Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com>
Cc: Lennox Wu <lennox.wu@gmail.com>
Cc: Ley Foon Tan <lftan@altera.com>
Cc: Mark Salter <msalter@redhat.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Mikael Starvik <starvik@axis.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Rich Felker <dalias@libc.org>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Richard Kuo <rkuo@codeaurora.org>
Cc: Richard Weinberger <richard@nod.at>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Steven Miao <realmz6@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent 2ec656eb

arch/Kconfig

+5 −0

Original line number	Diff line number	Diff line
		@@ -517,6 +517,11 @@ config HAVE_ARCH_MMAP_RND_BITS
		- ARCH_MMAP_RND_BITS_MIN
		- ARCH_MMAP_RND_BITS_MAX

		config HAVE_EXIT_THREAD
		bool
		help
		An architecture implements exit_thread.

		config ARCH_MMAP_RND_BITS_MIN
		int

arch/alpha/kernel/process.c

+0 −8

Original line number	Diff line number	Diff line
		@@ -210,14 +210,6 @@ start_thread(struct pt_regs * regs, unsigned long pc, unsigned long sp)
		}
		EXPORT_SYMBOL(start_thread);

		/*
		* Free current thread data structures etc..
		*/
		void
		exit_thread(void)
		{
		}

		void
		flush_thread(void)
		{

arch/arc/kernel/process.c

+0 −7

Original line number	Diff line number	Diff line
		@@ -183,13 +183,6 @@ void flush_thread(void)
		{
		}

		/*
		* Free any architecture-specific thread data structures, etc.
		*/
		void exit_thread(void)
		{
		}

		int dump_fpu(struct pt_regs regs, elf_fpregset_t fpu)
		{
		return 0;

arch/arm/Kconfig

+1 −0

Original line number	Diff line number	Diff line
		@@ -50,6 +50,7 @@ config ARM
		select HAVE_DMA_CONTIGUOUS if MMU
		select HAVE_DYNAMIC_FTRACE if (!XIP_KERNEL) && !CPU_ENDIAN_BE32 && MMU
		select HAVE_EFFICIENT_UNALIGNED_ACCESS if (CPU_V6 \|\| CPU_V6K \|\| CPU_V7) && MMU
		select HAVE_EXIT_THREAD
		select HAVE_FTRACE_MCOUNT_RECORD if (!XIP_KERNEL)
		select HAVE_FUNCTION_GRAPH_TRACER if (!THUMB2_KERNEL)
		select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)

arch/arm64/kernel/process.c

+0 −7

Original line number	Diff line number	Diff line
		@@ -200,13 +200,6 @@ void show_regs(struct pt_regs * regs)
		__show_regs(regs);
		}

		/*
		* Free current thread data structures etc..
		*/
		void exit_thread(void)
		{
		}

		static void tls_thread_flush(void)
		{
		asm ("msr tpidr_el0, xzr");