Remove remaining unwinder code
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: Gabor Gombas <gombasg@sztaki.hu> Cc: Jan Beulich <jbeulich@novell.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Ingo Molnar <mingo@elte.hu>, Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Alexey Dobriyan
Linus Torvalds
Родитель
eaccbfa564
Коммит
f1883f86de
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@ -1,13 +0,0 @@
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#ifndef _ASM_X86_UNWIND_H
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#define _ASM_X86_UNWIND_H
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#define UNW_PC(frame) ((void)(frame), 0UL)
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#define UNW_SP(frame) ((void)(frame), 0UL)
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#define UNW_FP(frame) ((void)(frame), 0UL)
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static inline int arch_unw_user_mode(const void *info)
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{
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return 0;
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}
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#endif /* _ASM_X86_UNWIND_H */
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@ -20,7 +20,6 @@
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#include <linux/module.h>
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#include <linux/ptrace.h>
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#include <linux/string.h>
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#include <linux/unwind.h>
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#include <linux/delay.h>
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#include <linux/errno.h>
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#include <linux/kexec.h>
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@ -51,7 +50,6 @@
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#include <asm/debugreg.h>
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#include <asm/atomic.h>
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#include <asm/system.h>
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#include <asm/unwind.h>
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#include <asm/traps.h>
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#include <asm/desc.h>
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#include <asm/i387.h>
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@ -294,9 +294,6 @@ struct module
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/* The size of the executable code in each section. */
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unsigned int init_text_size, core_text_size;
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/* The handle returned from unwind_add_table. */
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void *unwind_info;
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/* Arch-specific module values */
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struct mod_arch_specific arch;
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@ -1,68 +0,0 @@
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#ifndef _LINUX_UNWIND_H
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#define _LINUX_UNWIND_H
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/*
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* Copyright (C) 2002-2006 Novell, Inc.
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* Jan Beulich <jbeulich@novell.com>
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* This code is released under version 2 of the GNU GPL.
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*
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* A simple API for unwinding kernel stacks. This is used for
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* debugging and error reporting purposes. The kernel doesn't need
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* full-blown stack unwinding with all the bells and whistles, so there
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* is not much point in implementing the full Dwarf2 unwind API.
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*/
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struct module;
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struct unwind_frame_info {};
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static inline void unwind_init(void) {}
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static inline void unwind_setup(void) {}
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#ifdef CONFIG_MODULES
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static inline void *unwind_add_table(struct module *mod,
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const void *table_start,
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unsigned long table_size)
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{
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return NULL;
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}
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static inline void unwind_remove_table(void *handle, int init_only)
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{
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}
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#endif
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static inline int unwind_init_frame_info(struct unwind_frame_info *info,
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struct task_struct *tsk,
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const struct pt_regs *regs)
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{
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return -ENOSYS;
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}
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static inline int unwind_init_blocked(struct unwind_frame_info *info,
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struct task_struct *tsk)
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{
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return -ENOSYS;
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}
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static inline int unwind_init_running(struct unwind_frame_info *info,
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asmlinkage int (*cb)(struct unwind_frame_info *,
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void *arg),
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void *arg)
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{
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return -ENOSYS;
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}
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static inline int unwind(struct unwind_frame_info *info)
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{
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return -ENOSYS;
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}
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static inline int unwind_to_user(struct unwind_frame_info *info)
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{
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return -ENOSYS;
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}
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#endif /* _LINUX_UNWIND_H */
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@ -50,7 +50,6 @@
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#include <linux/rmap.h>
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#include <linux/mempolicy.h>
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#include <linux/key.h>
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#include <linux/unwind.h>
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#include <linux/buffer_head.h>
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#include <linux/page_cgroup.h>
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#include <linux/debug_locks.h>
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@ -537,7 +536,6 @@ asmlinkage void __init start_kernel(void)
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* Need to run as early as possible, to initialize the
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* lockdep hash:
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*/
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unwind_init();
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lockdep_init();
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debug_objects_early_init();
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cgroup_init_early();
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@ -559,7 +557,6 @@ asmlinkage void __init start_kernel(void)
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setup_arch(&command_line);
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mm_init_owner(&init_mm, &init_task);
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setup_command_line(command_line);
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unwind_setup();
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setup_per_cpu_areas();
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setup_nr_cpu_ids();
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smp_prepare_boot_cpu(); /* arch-specific boot-cpu hooks */
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@ -43,7 +43,6 @@
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#include <linux/device.h>
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#include <linux/string.h>
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#include <linux/mutex.h>
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#include <linux/unwind.h>
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#include <linux/rculist.h>
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#include <asm/uaccess.h>
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#include <asm/cacheflush.h>
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@ -1449,8 +1448,6 @@ static void free_module(struct module *mod)
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remove_sect_attrs(mod);
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mod_kobject_remove(mod);
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unwind_remove_table(mod->unwind_info, 0);
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/* Arch-specific cleanup. */
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module_arch_cleanup(mod);
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@ -1867,7 +1864,6 @@ static noinline struct module *load_module(void __user *umod,
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unsigned int symindex = 0;
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unsigned int strindex = 0;
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unsigned int modindex, versindex, infoindex, pcpuindex;
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unsigned int unwindex = 0;
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unsigned int num_kp, num_mcount;
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struct kernel_param *kp;
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struct module *mod;
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@ -1957,9 +1953,6 @@ static noinline struct module *load_module(void __user *umod,
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versindex = find_sec(hdr, sechdrs, secstrings, "__versions");
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infoindex = find_sec(hdr, sechdrs, secstrings, ".modinfo");
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pcpuindex = find_pcpusec(hdr, sechdrs, secstrings);
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#ifdef ARCH_UNWIND_SECTION_NAME
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unwindex = find_sec(hdr, sechdrs, secstrings, ARCH_UNWIND_SECTION_NAME);
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#endif
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/* Don't keep modinfo and version sections. */
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sechdrs[infoindex].sh_flags &= ~(unsigned long)SHF_ALLOC;
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@ -1969,8 +1962,6 @@ static noinline struct module *load_module(void __user *umod,
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sechdrs[symindex].sh_flags |= SHF_ALLOC;
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sechdrs[strindex].sh_flags |= SHF_ALLOC;
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#endif
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if (unwindex)
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sechdrs[unwindex].sh_flags |= SHF_ALLOC;
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/* Check module struct version now, before we try to use module. */
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if (!check_modstruct_version(sechdrs, versindex, mod)) {
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@ -2267,11 +2258,6 @@ static noinline struct module *load_module(void __user *umod,
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add_sect_attrs(mod, hdr->e_shnum, secstrings, sechdrs);
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add_notes_attrs(mod, hdr->e_shnum, secstrings, sechdrs);
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/* Size of section 0 is 0, so this works well if no unwind info. */
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mod->unwind_info = unwind_add_table(mod,
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(void *)sechdrs[unwindex].sh_addr,
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sechdrs[unwindex].sh_size);
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/* Get rid of temporary copy */
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vfree(hdr);
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@ -2370,7 +2356,6 @@ sys_init_module(void __user *umod,
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mutex_lock(&module_mutex);
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/* Drop initial reference. */
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module_put(mod);
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unwind_remove_table(mod->unwind_info, 1);
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module_free(mod, mod->module_init);
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mod->module_init = NULL;
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mod->init_size = 0;
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@ -6,7 +6,6 @@
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#include <linux/fs.h>
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#include <linux/module.h>
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#include <linux/interrupt.h>
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#include <linux/unwind.h>
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#include <linux/stacktrace.h>
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#include <linux/kallsyms.h>
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#include <linux/fault-inject.h>
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