debug: clean up kernel/profile.c
Before: total: 25 errors, 13 warnings, 602 lines checked After: total: 0 errors, 2 warnings, 601 lines checked No code changed: kernel/profile.o: text data bss dec hex filename 3048 236 24 3308 cec profile.o.before 3048 236 24 3308 cec profile.o.after md5: 2501d64748a4d350dffb11203e2a5182 profile.o.before.asm 2501d64748a4d350dffb11203e2a5182 profile.o.after.asm Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Paolo Ciarrocchi
Ingo Molnar
parent
6478d8800b
commit
1ad82fd547
111
kernel/profile.c
111
kernel/profile.c
@ -52,7 +52,7 @@ static DEFINE_PER_CPU(int, cpu_profile_flip);
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static DEFINE_MUTEX(profile_flip_mutex);
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#endif /* CONFIG_SMP */
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static int __init profile_setup(char * str)
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static int __init profile_setup(char *str)
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{
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static char __initdata schedstr[] = "schedule";
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static char __initdata sleepstr[] = "sleep";
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@ -104,28 +104,28 @@ __setup("profile=", profile_setup);
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void __init profile_init(void)
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{
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if (!prof_on)
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if (!prof_on)
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return;
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/* only text is profiled */
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prof_len = (_etext - _stext) >> prof_shift;
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prof_buffer = alloc_bootmem(prof_len*sizeof(atomic_t));
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}
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/* Profile event notifications */
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#ifdef CONFIG_PROFILING
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static BLOCKING_NOTIFIER_HEAD(task_exit_notifier);
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static ATOMIC_NOTIFIER_HEAD(task_free_notifier);
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static BLOCKING_NOTIFIER_HEAD(munmap_notifier);
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void profile_task_exit(struct task_struct * task)
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void profile_task_exit(struct task_struct *task)
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{
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blocking_notifier_call_chain(&task_exit_notifier, 0, task);
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}
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int profile_handoff_task(struct task_struct * task)
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int profile_handoff_task(struct task_struct *task)
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{
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int ret;
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ret = atomic_notifier_call_chain(&task_free_notifier, 0, task);
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@ -137,52 +137,55 @@ void profile_munmap(unsigned long addr)
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blocking_notifier_call_chain(&munmap_notifier, 0, (void *)addr);
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}
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int task_handoff_register(struct notifier_block * n)
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int task_handoff_register(struct notifier_block *n)
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{
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return atomic_notifier_chain_register(&task_free_notifier, n);
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}
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EXPORT_SYMBOL_GPL(task_handoff_register);
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int task_handoff_unregister(struct notifier_block * n)
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int task_handoff_unregister(struct notifier_block *n)
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{
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return atomic_notifier_chain_unregister(&task_free_notifier, n);
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}
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EXPORT_SYMBOL_GPL(task_handoff_unregister);
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int profile_event_register(enum profile_type type, struct notifier_block * n)
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int profile_event_register(enum profile_type type, struct notifier_block *n)
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{
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int err = -EINVAL;
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switch (type) {
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case PROFILE_TASK_EXIT:
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err = blocking_notifier_chain_register(
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&task_exit_notifier, n);
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break;
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case PROFILE_MUNMAP:
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err = blocking_notifier_chain_register(
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&munmap_notifier, n);
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break;
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}
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return err;
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}
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int profile_event_unregister(enum profile_type type, struct notifier_block * n)
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{
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int err = -EINVAL;
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switch (type) {
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case PROFILE_TASK_EXIT:
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err = blocking_notifier_chain_unregister(
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&task_exit_notifier, n);
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break;
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case PROFILE_MUNMAP:
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err = blocking_notifier_chain_unregister(
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&munmap_notifier, n);
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break;
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case PROFILE_TASK_EXIT:
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err = blocking_notifier_chain_register(
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&task_exit_notifier, n);
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break;
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case PROFILE_MUNMAP:
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err = blocking_notifier_chain_register(
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&munmap_notifier, n);
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break;
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}
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return err;
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}
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EXPORT_SYMBOL_GPL(profile_event_register);
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int profile_event_unregister(enum profile_type type, struct notifier_block *n)
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{
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int err = -EINVAL;
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switch (type) {
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case PROFILE_TASK_EXIT:
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err = blocking_notifier_chain_unregister(
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&task_exit_notifier, n);
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break;
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case PROFILE_MUNMAP:
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err = blocking_notifier_chain_unregister(
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&munmap_notifier, n);
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break;
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}
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return err;
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}
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EXPORT_SYMBOL_GPL(profile_event_unregister);
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int register_timer_hook(int (*hook)(struct pt_regs *))
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{
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@ -191,6 +194,7 @@ int register_timer_hook(int (*hook)(struct pt_regs *))
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timer_hook = hook;
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return 0;
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}
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EXPORT_SYMBOL_GPL(register_timer_hook);
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void unregister_timer_hook(int (*hook)(struct pt_regs *))
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{
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@ -199,13 +203,7 @@ void unregister_timer_hook(int (*hook)(struct pt_regs *))
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/* make sure all CPUs see the NULL hook */
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synchronize_sched(); /* Allow ongoing interrupts to complete. */
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}
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EXPORT_SYMBOL_GPL(register_timer_hook);
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EXPORT_SYMBOL_GPL(unregister_timer_hook);
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EXPORT_SYMBOL_GPL(task_handoff_register);
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EXPORT_SYMBOL_GPL(task_handoff_unregister);
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EXPORT_SYMBOL_GPL(profile_event_register);
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EXPORT_SYMBOL_GPL(profile_event_unregister);
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#endif /* CONFIG_PROFILING */
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@ -366,7 +364,7 @@ static int __devinit profile_cpu_callback(struct notifier_block *info,
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per_cpu(cpu_profile_hits, cpu)[0] = page_address(page);
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}
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break;
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out_free:
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out_free:
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page = virt_to_page(per_cpu(cpu_profile_hits, cpu)[1]);
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per_cpu(cpu_profile_hits, cpu)[1] = NULL;
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__free_page(page);
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@ -409,7 +407,6 @@ void profile_hits(int type, void *__pc, unsigned int nr_hits)
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atomic_add(nr_hits, &prof_buffer[min(pc, prof_len - 1)]);
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}
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#endif /* !CONFIG_SMP */
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EXPORT_SYMBOL_GPL(profile_hits);
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void profile_tick(int type)
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@ -427,7 +424,7 @@ void profile_tick(int type)
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#include <asm/uaccess.h>
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#include <asm/ptrace.h>
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static int prof_cpu_mask_read_proc (char *page, char **start, off_t off,
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static int prof_cpu_mask_read_proc(char *page, char **start, off_t off,
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int count, int *eof, void *data)
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{
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int len = cpumask_scnprintf(page, count, *(cpumask_t *)data);
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@ -437,8 +434,8 @@ static int prof_cpu_mask_read_proc (char *page, char **start, off_t off,
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return len;
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}
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static int prof_cpu_mask_write_proc (struct file *file, const char __user *buffer,
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unsigned long count, void *data)
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static int prof_cpu_mask_write_proc(struct file *file,
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const char __user *buffer, unsigned long count, void *data)
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{
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cpumask_t *mask = (cpumask_t *)data;
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unsigned long full_count = count, err;
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@ -457,7 +454,8 @@ void create_prof_cpu_mask(struct proc_dir_entry *root_irq_dir)
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struct proc_dir_entry *entry;
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/* create /proc/irq/prof_cpu_mask */
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if (!(entry = create_proc_entry("prof_cpu_mask", 0600, root_irq_dir)))
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entry = create_proc_entry("prof_cpu_mask", 0600, root_irq_dir);
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if (!entry)
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return;
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entry->data = (void *)&prof_cpu_mask;
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entry->read_proc = prof_cpu_mask_read_proc;
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@ -475,7 +473,7 @@ read_profile(struct file *file, char __user *buf, size_t count, loff_t *ppos)
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{
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unsigned long p = *ppos;
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ssize_t read;
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char * pnt;
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char *pnt;
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unsigned int sample_step = 1 << prof_shift;
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profile_flip_buffers();
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@ -486,12 +484,12 @@ read_profile(struct file *file, char __user *buf, size_t count, loff_t *ppos)
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read = 0;
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while (p < sizeof(unsigned int) && count > 0) {
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if (put_user(*((char *)(&sample_step)+p),buf))
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if (put_user(*((char *)(&sample_step)+p), buf))
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return -EFAULT;
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buf++; p++; count--; read++;
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}
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pnt = (char *)prof_buffer + p - sizeof(atomic_t);
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if (copy_to_user(buf,(void *)pnt,count))
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if (copy_to_user(buf, (void *)pnt, count))
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return -EFAULT;
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read += count;
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*ppos += read;
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@ -508,7 +506,7 @@ static ssize_t write_profile(struct file *file, const char __user *buf,
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size_t count, loff_t *ppos)
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{
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#ifdef CONFIG_SMP
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extern int setup_profiling_timer (unsigned int multiplier);
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extern int setup_profiling_timer(unsigned int multiplier);
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if (count == sizeof(int)) {
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unsigned int multiplier;
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@ -591,7 +589,8 @@ static int __init create_proc_profile(void)
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return 0;
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if (create_hash_tables())
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return -1;
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if (!(entry = create_proc_entry("profile", S_IWUSR | S_IRUGO, NULL)))
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entry = create_proc_entry("profile", S_IWUSR | S_IRUGO, NULL);
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if (!entry)
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return 0;
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entry->proc_fops = &proc_profile_operations;
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entry->size = (1+prof_len) * sizeof(atomic_t);
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