diff options
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/fork.c | 4 | ||||
| -rw-r--r-- | kernel/kprobes.c | 2 | ||||
| -rw-r--r-- | kernel/power/disk.c | 12 | ||||
| -rw-r--r-- | kernel/power/main.c | 16 | ||||
| -rw-r--r-- | kernel/power/process.c | 6 | ||||
| -rw-r--r-- | kernel/power/swsusp.c | 36 | ||||
| -rw-r--r-- | kernel/profile.c | 4 | ||||
| -rw-r--r-- | kernel/sched.c | 7 | ||||
| -rw-r--r-- | kernel/sys_ni.c | 3 | ||||
| -rw-r--r-- | kernel/sysctl.c | 43 | ||||
| -rw-r--r-- | kernel/user.c | 4 |
11 files changed, 103 insertions, 34 deletions
diff --git a/kernel/fork.c b/kernel/fork.c index cdef6cea8900..b65187f0c74e 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -208,8 +208,10 @@ static inline int dup_mmap(struct mm_struct * mm, struct mm_struct * oldmm) struct file *file; if (mpnt->vm_flags & VM_DONTCOPY) { + long pages = vma_pages(mpnt); + mm->total_vm -= pages; __vm_stat_account(mm, mpnt->vm_flags, mpnt->vm_file, - -vma_pages(mpnt)); + -pages); continue; } charge = 0; diff --git a/kernel/kprobes.c b/kernel/kprobes.c index 90c0e82b650c..b0237122b24e 100644 --- a/kernel/kprobes.c +++ b/kernel/kprobes.c @@ -574,7 +574,7 @@ static int __init init_kprobes(void) INIT_HLIST_HEAD(&kretprobe_inst_table[i]); } - err = arch_init(); + err = arch_init_kprobes(); if (!err) err = register_die_notifier(&kprobe_exceptions_nb); diff --git a/kernel/power/disk.c b/kernel/power/disk.c index fb8de63c2919..3ec789c6b537 100644 --- a/kernel/power/disk.c +++ b/kernel/power/disk.c @@ -16,6 +16,8 @@ #include <linux/device.h> #include <linux/delay.h> #include <linux/fs.h> +#include <linux/mount.h> + #include "power.h" @@ -234,6 +236,16 @@ static int software_resume(void) { int error; + if (!swsusp_resume_device) { + if (!strlen(resume_file)) + return -ENOENT; + swsusp_resume_device = name_to_dev_t(resume_file); + pr_debug("swsusp: Resume From Partition %s\n", resume_file); + } else { + pr_debug("swsusp: Resume From Partition %d:%d\n", + MAJOR(swsusp_resume_device), MINOR(swsusp_resume_device)); + } + if (noresume) { /** * FIXME: If noresume is specified, we need to find the partition diff --git a/kernel/power/main.c b/kernel/power/main.c index c94cb9e95090..71aa0fd22007 100644 --- a/kernel/power/main.c +++ b/kernel/power/main.c @@ -19,6 +19,9 @@ #include "power.h" +/*This is just an arbitrary number */ +#define FREE_PAGE_NUMBER (100) + DECLARE_MUTEX(pm_sem); struct pm_ops * pm_ops = NULL; @@ -49,6 +52,7 @@ void pm_set_ops(struct pm_ops * ops) static int suspend_prepare(suspend_state_t state) { int error = 0; + unsigned int free_pages; if (!pm_ops || !pm_ops->enter) return -EPERM; @@ -67,6 +71,16 @@ static int suspend_prepare(suspend_state_t state) goto Thaw; } + if ((free_pages = nr_free_pages()) < FREE_PAGE_NUMBER) { + pr_debug("PM: free some memory\n"); + shrink_all_memory(FREE_PAGE_NUMBER - free_pages); + if (nr_free_pages() < FREE_PAGE_NUMBER) { + error = -ENOMEM; + printk(KERN_ERR "PM: No enough memory\n"); + goto Thaw; + } + } + if (pm_ops->prepare) { if ((error = pm_ops->prepare(state))) goto Thaw; @@ -194,7 +208,7 @@ int software_suspend(void) int pm_suspend(suspend_state_t state) { - if (state > PM_SUSPEND_ON && state < PM_SUSPEND_MAX) + if (state > PM_SUSPEND_ON && state <= PM_SUSPEND_MAX) return enter_state(state); return -EINVAL; } diff --git a/kernel/power/process.c b/kernel/power/process.c index 0a086640bcfc..3bd0d261818f 100644 --- a/kernel/power/process.c +++ b/kernel/power/process.c @@ -59,6 +59,7 @@ int freeze_processes(void) int todo; unsigned long start_time; struct task_struct *g, *p; + unsigned long flags; printk( "Stopping tasks: " ); start_time = jiffies; @@ -66,12 +67,9 @@ int freeze_processes(void) todo = 0; read_lock(&tasklist_lock); do_each_thread(g, p) { - unsigned long flags; if (!freezeable(p)) continue; - if ((frozen(p)) || - (p->state == TASK_TRACED) || - (p->state == TASK_STOPPED)) + if (frozen(p)) continue; freeze(p); diff --git a/kernel/power/swsusp.c b/kernel/power/swsusp.c index c285fc5a2320..f2bc71b9fe8b 100644 --- a/kernel/power/swsusp.c +++ b/kernel/power/swsusp.c @@ -63,6 +63,7 @@ #include <linux/console.h> #include <linux/highmem.h> #include <linux/bio.h> +#include <linux/mount.h> #include <asm/uaccess.h> #include <asm/mmu_context.h> @@ -869,13 +870,6 @@ extern asmlinkage int swsusp_arch_resume(void); asmlinkage int swsusp_save(void) { - int error = 0; - - if ((error = swsusp_swap_check())) { - printk(KERN_ERR "swsusp: FATAL: cannot find swap device, try " - "swapon -a!\n"); - return error; - } return suspend_prepare_image(); } @@ -892,14 +886,20 @@ int swsusp_suspend(void) * at resume time, and evil weirdness ensues. */ if ((error = device_power_down(PMSG_FREEZE))) { - printk(KERN_ERR "Some devices failed to power down, aborting suspend\n"); local_irq_enable(); - swsusp_free(); return error; } + + if ((error = swsusp_swap_check())) { + printk(KERN_ERR "swsusp: FATAL: cannot find swap device, try " + "swapon -a!\n"); + local_irq_enable(); + return error; + } + save_processor_state(); if ((error = swsusp_arch_suspend())) - swsusp_free(); + printk("Error %d suspending\n", error); /* Restore control flow magically appears here */ restore_processor_state(); BUG_ON (nr_copy_pages_check != nr_copy_pages); @@ -1166,9 +1166,9 @@ static int bio_write_page(pgoff_t page_off, void * page) static const char * sanity_check(void) { dump_info(); - if(swsusp_info.version_code != LINUX_VERSION_CODE) + if (swsusp_info.version_code != LINUX_VERSION_CODE) return "kernel version"; - if(swsusp_info.num_physpages != num_physpages) + if (swsusp_info.num_physpages != num_physpages) return "memory size"; if (strcmp(swsusp_info.uts.sysname,system_utsname.sysname)) return "system type"; @@ -1261,8 +1261,6 @@ static int data_read(struct pbe *pblist) return error; } -extern dev_t name_to_dev_t(const char *line); - /** * read_pagedir - Read page backup list pages from swap */ @@ -1356,16 +1354,6 @@ int swsusp_check(void) { int error; - if (!swsusp_resume_device) { - if (!strlen(resume_file)) - return -ENOENT; - swsusp_resume_device = name_to_dev_t(resume_file); - pr_debug("swsusp: Resume From Partition %s\n", resume_file); - } else { - pr_debug("swsusp: Resume From Partition %d:%d\n", - MAJOR(swsusp_resume_device), MINOR(swsusp_resume_device)); - } - resume_bdev = open_by_devnum(swsusp_resume_device, FMODE_READ); if (!IS_ERR(resume_bdev)) { set_blocksize(resume_bdev, PAGE_SIZE); diff --git a/kernel/profile.c b/kernel/profile.c index ad8cbb75ffa2..f89248e6d704 100644 --- a/kernel/profile.c +++ b/kernel/profile.c @@ -35,11 +35,11 @@ struct profile_hit { #define NR_PROFILE_GRP (NR_PROFILE_HIT/PROFILE_GRPSZ) /* Oprofile timer tick hook */ -int (*timer_hook)(struct pt_regs *); +int (*timer_hook)(struct pt_regs *) __read_mostly; static atomic_t *prof_buffer; static unsigned long prof_len, prof_shift; -static int prof_on; +static int prof_on __read_mostly; static cpumask_t prof_cpu_mask = CPU_MASK_ALL; #ifdef CONFIG_SMP static DEFINE_PER_CPU(struct profile_hit *[2], cpu_profile_hits); diff --git a/kernel/sched.c b/kernel/sched.c index 5f2182d42241..4107db0dc091 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -3877,6 +3877,13 @@ asmlinkage long sys_sched_yield(void) static inline void __cond_resched(void) { + /* + * The BKS might be reacquired before we have dropped + * PREEMPT_ACTIVE, which could trigger a second + * cond_resched() call. + */ + if (unlikely(preempt_count())) + return; do { add_preempt_count(PREEMPT_ACTIVE); schedule(); diff --git a/kernel/sys_ni.c b/kernel/sys_ni.c index 29196ce9b40f..42b40ae5eada 100644 --- a/kernel/sys_ni.c +++ b/kernel/sys_ni.c @@ -80,6 +80,9 @@ cond_syscall(sys_keyctl); cond_syscall(compat_sys_keyctl); cond_syscall(compat_sys_socketcall); cond_syscall(sys_set_zone_reclaim); +cond_syscall(sys_inotify_init); +cond_syscall(sys_inotify_add_watch); +cond_syscall(sys_inotify_rm_watch); /* arch-specific weak syscall entries */ cond_syscall(sys_pciconfig_read); diff --git a/kernel/sysctl.c b/kernel/sysctl.c index 270ee7fadbd8..b240e2cb86fc 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -67,6 +67,12 @@ extern int printk_ratelimit_jiffies; extern int printk_ratelimit_burst; extern int pid_max_min, pid_max_max; +#ifdef CONFIG_INOTIFY +extern int inotify_max_user_devices; +extern int inotify_max_user_watches; +extern int inotify_max_queued_events; +#endif + #if defined(CONFIG_X86_LOCAL_APIC) && defined(CONFIG_X86) int unknown_nmi_panic; extern int proc_unknown_nmi_panic(ctl_table *, int, struct file *, @@ -218,6 +224,7 @@ static ctl_table root_table[] = { .mode = 0555, .child = dev_table, }, + { .ctl_name = 0 } }; @@ -959,6 +966,40 @@ static ctl_table fs_table[] = { .mode = 0644, .proc_handler = &proc_dointvec, }, +#ifdef CONFIG_INOTIFY + { + .ctl_name = INOTIFY_MAX_USER_DEVICES, + .procname = "max_user_devices", + .data = &inotify_max_user_devices, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec_minmax, + .strategy = &sysctl_intvec, + .extra1 = &zero, + }, + + { + .ctl_name = INOTIFY_MAX_USER_WATCHES, + .procname = "max_user_watches", + .data = &inotify_max_user_watches, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec_minmax, + .strategy = &sysctl_intvec, + .extra1 = &zero, + }, + + { + .ctl_name = INOTIFY_MAX_QUEUED_EVENTS, + .procname = "max_queued_events", + .data = &inotify_max_queued_events, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec_minmax, + .strategy = &sysctl_intvec, + .extra1 = &zero + }, +#endif { .ctl_name = 0 } }; @@ -968,7 +1009,7 @@ static ctl_table debug_table[] = { static ctl_table dev_table[] = { { .ctl_name = 0 } -}; +}; extern void init_irq_proc (void); diff --git a/kernel/user.c b/kernel/user.c index 734575d55769..89e562feb1b1 100644 --- a/kernel/user.c +++ b/kernel/user.c @@ -120,6 +120,10 @@ struct user_struct * alloc_uid(uid_t uid) atomic_set(&new->processes, 0); atomic_set(&new->files, 0); atomic_set(&new->sigpending, 0); +#ifdef CONFIG_INOTIFY + atomic_set(&new->inotify_watches, 0); + atomic_set(&new->inotify_devs, 0); +#endif new->mq_bytes = 0; new->locked_shm = 0; |
