From 8239c25f47d2b318156993b15f33900a86ea5e17 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Fri, 20 Apr 2012 13:05:42 +0000 Subject: smp: Add task_struct argument to __cpu_up() Preparatory patch to make the idle thread allocation for secondary cpus generic. Signed-off-by: Thomas Gleixner Cc: Peter Zijlstra Cc: Rusty Russell Cc: Paul E. McKenney Cc: Srivatsa S. Bhat Cc: Matt Turner Cc: Russell King Cc: Mike Frysinger Cc: Jesper Nilsson Cc: Richard Kuo Cc: Tony Luck Cc: Hirokazu Takata Cc: Ralf Baechle Cc: David Howells Cc: James E.J. Bottomley Cc: Benjamin Herrenschmidt Cc: Martin Schwidefsky Cc: Paul Mundt Cc: David S. Miller Cc: Chris Metcalf Cc: Richard Weinberger Cc: x86@kernel.org Link: http://lkml.kernel.org/r/20120420124556.964170564@linutronix.de --- arch/mn10300/kernel/smp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch/mn10300') diff --git a/arch/mn10300/kernel/smp.c b/arch/mn10300/kernel/smp.c index 910dddf65e44..c6b40dad0d0b 100644 --- a/arch/mn10300/kernel/smp.c +++ b/arch/mn10300/kernel/smp.c @@ -921,7 +921,7 @@ void initialize_secondary(void) * __cpu_up - Set smp_commenced_mask for the nominated CPU * @cpu: The target CPU. */ -int __devinit __cpu_up(unsigned int cpu) +int __devinit __cpu_up(unsigned int cpu, struct task_struct *tidle) { int timeout; -- cgit From fe285f523bc13185da6d4c740655b2c27c75cf13 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Thu, 3 May 2012 09:02:56 +0000 Subject: mn10300: Use generic init_task Same code. Use the generic version. The special Makefile treatment is pointless anyway as init_task.o contains only data which is handled by the linker script. So no point on being treated like head text. Signed-off-by: Thomas Gleixner Acked-by: David Howells Link: http://lkml.kernel.org/r/20120503085035.011270394@linutronix.de --- arch/mn10300/Kconfig | 1 + arch/mn10300/Makefile | 2 +- arch/mn10300/kernel/Makefile | 2 +- arch/mn10300/kernel/init_task.c | 39 --------------------------------------- 4 files changed, 3 insertions(+), 41 deletions(-) delete mode 100644 arch/mn10300/kernel/init_task.c (limited to 'arch/mn10300') diff --git a/arch/mn10300/Kconfig b/arch/mn10300/Kconfig index 3aa3de017159..d28b6eb1b122 100644 --- a/arch/mn10300/Kconfig +++ b/arch/mn10300/Kconfig @@ -6,6 +6,7 @@ config MN10300 select HAVE_ARCH_TRACEHOOK select HAVE_ARCH_KGDB select HAVE_NMI_WATCHDOG if MN10300_WD_TIMER + select HAVE_GENERIC_INIT_TASK config AM33_2 def_bool n diff --git a/arch/mn10300/Makefile b/arch/mn10300/Makefile index 7120282bf0d8..33188b6e81e4 100644 --- a/arch/mn10300/Makefile +++ b/arch/mn10300/Makefile @@ -51,7 +51,7 @@ UNIT := asb2364 endif -head-y := arch/mn10300/kernel/head.o arch/mn10300/kernel/init_task.o +head-y := arch/mn10300/kernel/head.o core-y += arch/mn10300/kernel/ arch/mn10300/mm/ diff --git a/arch/mn10300/kernel/Makefile b/arch/mn10300/kernel/Makefile index 47ed30fe8178..d06749173d63 100644 --- a/arch/mn10300/kernel/Makefile +++ b/arch/mn10300/kernel/Makefile @@ -1,7 +1,7 @@ # # Makefile for the MN10300-specific core kernel code # -extra-y := head.o init_task.o vmlinux.lds +extra-y := head.o vmlinux.lds fpu-obj-y := fpu-nofpu.o fpu-nofpu-low.o fpu-obj-$(CONFIG_FPU) := fpu.o fpu-low.o diff --git a/arch/mn10300/kernel/init_task.c b/arch/mn10300/kernel/init_task.c deleted file mode 100644 index a481b043bea7..000000000000 --- a/arch/mn10300/kernel/init_task.c +++ /dev/null @@ -1,39 +0,0 @@ -/* MN10300 Initial task definitions - * - * Copyright (C) 2007 Matsushita Electric Industrial Co., Ltd. - * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public Licence - * as published by the Free Software Foundation; either version - * 2 of the Licence, or (at your option) any later version. - */ -#include -#include -#include -#include -#include -#include -#include -#include -#include - -static struct signal_struct init_signals = INIT_SIGNALS(init_signals); -static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand); -/* - * Initial thread structure. - * - * We need to make sure that this is THREAD_SIZE aligned due to the - * way process stacks are handled. This is done by having a special - * "init_task" linker map entry.. - */ -union thread_union init_thread_union __init_task_data = - { INIT_THREAD_INFO(init_task) }; - -/* - * Initial task structure. - * - * All other task structs will be allocated on slabs in fork.c - */ -struct task_struct init_task = INIT_TASK(init_task); -EXPORT_SYMBOL(init_task); -- cgit From a6359d1eec43d1fd6ffbac958149844873e0084f Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Thu, 3 May 2012 09:03:02 +0000 Subject: init_task: Replace CONFIG_HAVE_GENERIC_INIT_TASK Now that all archs except ia64 are converted, replace the config and let the ia64 select CONFIG_ARCH_INIT_TASK Signed-off-by: Thomas Gleixner Link: http://lkml.kernel.org/r/20120503085035.867948914@linutronix.de --- arch/mn10300/Kconfig | 1 - 1 file changed, 1 deletion(-) (limited to 'arch/mn10300') diff --git a/arch/mn10300/Kconfig b/arch/mn10300/Kconfig index d28b6eb1b122..3aa3de017159 100644 --- a/arch/mn10300/Kconfig +++ b/arch/mn10300/Kconfig @@ -6,7 +6,6 @@ config MN10300 select HAVE_ARCH_TRACEHOOK select HAVE_ARCH_KGDB select HAVE_NMI_WATCHDOG if MN10300_WD_TIMER - select HAVE_GENERIC_INIT_TASK config AM33_2 def_bool n -- cgit From c03a6a7ba6f456663e4b254cdde460b24c0852e1 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Sat, 5 May 2012 15:05:45 +0000 Subject: mn10300: Use common threadinfo allocator Let the core code allocate and handle the kgdb cleanup with the arch_release_thread_info() function. Signed-off-by: Thomas Gleixner Cc: David Howells Link: http://lkml.kernel.org/r/20120505150141.996582377@linutronix.de --- arch/mn10300/include/asm/thread_info.h | 17 +++-------------- arch/mn10300/kernel/kgdb.c | 3 +-- 2 files changed, 4 insertions(+), 16 deletions(-) (limited to 'arch/mn10300') diff --git a/arch/mn10300/include/asm/thread_info.h b/arch/mn10300/include/asm/thread_info.h index 28cf52100baa..08251d6f6b11 100644 --- a/arch/mn10300/include/asm/thread_info.h +++ b/arch/mn10300/include/asm/thread_info.h @@ -20,8 +20,10 @@ #ifdef CONFIG_4KSTACKS #define THREAD_SIZE (4096) +#define THREAD_SIZE_ORDER (0) #else #define THREAD_SIZE (8192) +#define THREAD_SIZE_ORDER (1) #endif #define STACK_WARN (THREAD_SIZE / 8) @@ -120,21 +122,8 @@ static inline unsigned long current_stack_pointer(void) return sp; } -#define __HAVE_ARCH_THREAD_INFO_ALLOCATOR - -/* thread information allocation */ -#ifdef CONFIG_DEBUG_STACK_USAGE -#define alloc_thread_info_node(tsk, node) \ - kzalloc_node(THREAD_SIZE, GFP_KERNEL, node) -#else -#define alloc_thread_info_node(tsk, node) \ - kmalloc_node(THREAD_SIZE, GFP_KERNEL, node) -#endif - #ifndef CONFIG_KGDB -#define free_thread_info(ti) kfree((ti)) -#else -extern void free_thread_info(struct thread_info *); +void arch_release_thread_info(struct thread_info *ti) #endif #define get_thread_info(ti) get_task_struct((ti)->task) #define put_thread_info(ti) put_task_struct((ti)->task) diff --git a/arch/mn10300/kernel/kgdb.c b/arch/mn10300/kernel/kgdb.c index f6c981db2a36..99770823451a 100644 --- a/arch/mn10300/kernel/kgdb.c +++ b/arch/mn10300/kernel/kgdb.c @@ -397,7 +397,7 @@ static bool kgdb_arch_undo_singlestep(struct pt_regs *regs) * single-step state is cleared. At this point the breakpoints should have * been removed by __switch_to(). */ -void free_thread_info(struct thread_info *ti) +void arch_release_thread_info(struct thread_info *ti) { if (kgdb_sstep_thread == ti) { kgdb_sstep_thread = NULL; @@ -407,7 +407,6 @@ void free_thread_info(struct thread_info *ti) * so force immediate reentry */ kgdb_breakpoint(); } - kfree(ti); } /* -- cgit