mirror of
https://github.com/FEX-Emu/linux.git
synced 2024-12-18 06:50:08 +00:00
drivers/oprofile: coding style fixes in buffer_sync.c
Signed-off-by: Robert Richter <robert.richter@amd.com> Cc: oprofile-list <oprofile-list@lists.sourceforge.net> Cc: Barry Kasindorf <barry.kasindorf@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Robert Richter
Ingo Molnar
parent
6657fe4f56
commit
73185e0a5d
@ -33,7 +33,7 @@
|
||||
#include "event_buffer.h"
|
||||
#include "cpu_buffer.h"
|
||||
#include "buffer_sync.h"
|
||||
|
||||
|
||||
static LIST_HEAD(dying_tasks);
|
||||
static LIST_HEAD(dead_tasks);
|
||||
static cpumask_t marked_cpus = CPU_MASK_NONE;
|
||||
@ -48,10 +48,11 @@ static void process_task_mortuary(void);
|
||||
* Can be invoked from softirq via RCU callback due to
|
||||
* call_rcu() of the task struct, hence the _irqsave.
|
||||
*/
|
||||
static int task_free_notify(struct notifier_block * self, unsigned long val, void * data)
|
||||
static int
|
||||
task_free_notify(struct notifier_block *self, unsigned long val, void *data)
|
||||
{
|
||||
unsigned long flags;
|
||||
struct task_struct * task = data;
|
||||
struct task_struct *task = data;
|
||||
spin_lock_irqsave(&task_mortuary, flags);
|
||||
list_add(&task->tasks, &dying_tasks);
|
||||
spin_unlock_irqrestore(&task_mortuary, flags);
|
||||
@ -62,13 +63,14 @@ static int task_free_notify(struct notifier_block * self, unsigned long val, voi
|
||||
/* The task is on its way out. A sync of the buffer means we can catch
|
||||
* any remaining samples for this task.
|
||||
*/
|
||||
static int task_exit_notify(struct notifier_block * self, unsigned long val, void * data)
|
||||
static int
|
||||
task_exit_notify(struct notifier_block *self, unsigned long val, void *data)
|
||||
{
|
||||
/* To avoid latency problems, we only process the current CPU,
|
||||
* hoping that most samples for the task are on this CPU
|
||||
*/
|
||||
sync_buffer(raw_smp_processor_id());
|
||||
return 0;
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
@ -77,11 +79,12 @@ static int task_exit_notify(struct notifier_block * self, unsigned long val, voi
|
||||
* we don't lose any. This does not have to be exact, it's a QoI issue
|
||||
* only.
|
||||
*/
|
||||
static int munmap_notify(struct notifier_block * self, unsigned long val, void * data)
|
||||
static int
|
||||
munmap_notify(struct notifier_block *self, unsigned long val, void *data)
|
||||
{
|
||||
unsigned long addr = (unsigned long)data;
|
||||
struct mm_struct * mm = current->mm;
|
||||
struct vm_area_struct * mpnt;
|
||||
struct mm_struct *mm = current->mm;
|
||||
struct vm_area_struct *mpnt;
|
||||
|
||||
down_read(&mm->mmap_sem);
|
||||
|
||||
@ -99,11 +102,12 @@ static int munmap_notify(struct notifier_block * self, unsigned long val, void *
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
|
||||
/* We need to be told about new modules so we don't attribute to a previously
|
||||
* loaded module, or drop the samples on the floor.
|
||||
*/
|
||||
static int module_load_notify(struct notifier_block * self, unsigned long val, void * data)
|
||||
static int
|
||||
module_load_notify(struct notifier_block *self, unsigned long val, void *data)
|
||||
{
|
||||
#ifdef CONFIG_MODULES
|
||||
if (val != MODULE_STATE_COMING)
|
||||
@ -118,7 +122,7 @@ static int module_load_notify(struct notifier_block * self, unsigned long val, v
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
|
||||
static struct notifier_block task_free_nb = {
|
||||
.notifier_call = task_free_notify,
|
||||
};
|
||||
@ -135,7 +139,7 @@ static struct notifier_block module_load_nb = {
|
||||
.notifier_call = module_load_notify,
|
||||
};
|
||||
|
||||
|
||||
|
||||
static void end_sync(void)
|
||||
{
|
||||
end_cpu_work();
|
||||
@ -208,14 +212,14 @@ static inline unsigned long fast_get_dcookie(struct path *path)
|
||||
* not strictly necessary but allows oprofile to associate
|
||||
* shared-library samples with particular applications
|
||||
*/
|
||||
static unsigned long get_exec_dcookie(struct mm_struct * mm)
|
||||
static unsigned long get_exec_dcookie(struct mm_struct *mm)
|
||||
{
|
||||
unsigned long cookie = NO_COOKIE;
|
||||
struct vm_area_struct * vma;
|
||||
|
||||
struct vm_area_struct *vma;
|
||||
|
||||
if (!mm)
|
||||
goto out;
|
||||
|
||||
|
||||
for (vma = mm->mmap; vma; vma = vma->vm_next) {
|
||||
if (!vma->vm_file)
|
||||
continue;
|
||||
@ -235,13 +239,14 @@ out:
|
||||
* sure to do this lookup before a mm->mmap modification happens so
|
||||
* we don't lose track.
|
||||
*/
|
||||
static unsigned long lookup_dcookie(struct mm_struct * mm, unsigned long addr, off_t * offset)
|
||||
static unsigned long
|
||||
lookup_dcookie(struct mm_struct *mm, unsigned long addr, off_t *offset)
|
||||
{
|
||||
unsigned long cookie = NO_COOKIE;
|
||||
struct vm_area_struct * vma;
|
||||
struct vm_area_struct *vma;
|
||||
|
||||
for (vma = find_vma(mm, addr); vma; vma = vma->vm_next) {
|
||||
|
||||
|
||||
if (addr < vma->vm_start || addr >= vma->vm_end)
|
||||
continue;
|
||||
|
||||
@ -265,7 +270,7 @@ static unsigned long lookup_dcookie(struct mm_struct * mm, unsigned long addr, o
|
||||
|
||||
|
||||
static unsigned long last_cookie = INVALID_COOKIE;
|
||||
|
||||
|
||||
static void add_cpu_switch(int i)
|
||||
{
|
||||
add_event_entry(ESCAPE_CODE);
|
||||
@ -278,16 +283,16 @@ static void add_kernel_ctx_switch(unsigned int in_kernel)
|
||||
{
|
||||
add_event_entry(ESCAPE_CODE);
|
||||
if (in_kernel)
|
||||
add_event_entry(KERNEL_ENTER_SWITCH_CODE);
|
||||
add_event_entry(KERNEL_ENTER_SWITCH_CODE);
|
||||
else
|
||||
add_event_entry(KERNEL_EXIT_SWITCH_CODE);
|
||||
add_event_entry(KERNEL_EXIT_SWITCH_CODE);
|
||||
}
|
||||
|
||||
|
||||
static void
|
||||
add_user_ctx_switch(struct task_struct const * task, unsigned long cookie)
|
||||
add_user_ctx_switch(struct task_struct const *task, unsigned long cookie)
|
||||
{
|
||||
add_event_entry(ESCAPE_CODE);
|
||||
add_event_entry(CTX_SWITCH_CODE);
|
||||
add_event_entry(CTX_SWITCH_CODE);
|
||||
add_event_entry(task->pid);
|
||||
add_event_entry(cookie);
|
||||
/* Another code for daemon back-compat */
|
||||
@ -296,7 +301,7 @@ add_user_ctx_switch(struct task_struct const * task, unsigned long cookie)
|
||||
add_event_entry(task->tgid);
|
||||
}
|
||||
|
||||
|
||||
|
||||
static void add_cookie_switch(unsigned long cookie)
|
||||
{
|
||||
add_event_entry(ESCAPE_CODE);
|
||||
@ -304,7 +309,7 @@ static void add_cookie_switch(unsigned long cookie)
|
||||
add_event_entry(cookie);
|
||||
}
|
||||
|
||||
|
||||
|
||||
static void add_trace_begin(void)
|
||||
{
|
||||
add_event_entry(ESCAPE_CODE);
|
||||
@ -319,13 +324,13 @@ static void add_sample_entry(unsigned long offset, unsigned long event)
|
||||
}
|
||||
|
||||
|
||||
static int add_us_sample(struct mm_struct * mm, struct op_sample * s)
|
||||
static int add_us_sample(struct mm_struct *mm, struct op_sample *s)
|
||||
{
|
||||
unsigned long cookie;
|
||||
off_t offset;
|
||||
|
||||
cookie = lookup_dcookie(mm, s->eip, &offset);
|
||||
|
||||
|
||||
cookie = lookup_dcookie(mm, s->eip, &offset);
|
||||
|
||||
if (cookie == INVALID_COOKIE) {
|
||||
atomic_inc(&oprofile_stats.sample_lost_no_mapping);
|
||||
return 0;
|
||||
@ -341,13 +346,13 @@ static int add_us_sample(struct mm_struct * mm, struct op_sample * s)
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
|
||||
/* Add a sample to the global event buffer. If possible the
|
||||
* sample is converted into a persistent dentry/offset pair
|
||||
* for later lookup from userspace.
|
||||
*/
|
||||
static int
|
||||
add_sample(struct mm_struct * mm, struct op_sample * s, int in_kernel)
|
||||
add_sample(struct mm_struct *mm, struct op_sample *s, int in_kernel)
|
||||
{
|
||||
if (in_kernel) {
|
||||
add_sample_entry(s->eip, s->event);
|
||||
@ -359,9 +364,9 @@ add_sample(struct mm_struct * mm, struct op_sample * s, int in_kernel)
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
static void release_mm(struct mm_struct * mm)
|
||||
|
||||
static void release_mm(struct mm_struct *mm)
|
||||
{
|
||||
if (!mm)
|
||||
return;
|
||||
@ -370,9 +375,9 @@ static void release_mm(struct mm_struct * mm)
|
||||
}
|
||||
|
||||
|
||||
static struct mm_struct * take_tasks_mm(struct task_struct * task)
|
||||
static struct mm_struct *take_tasks_mm(struct task_struct *task)
|
||||
{
|
||||
struct mm_struct * mm = get_task_mm(task);
|
||||
struct mm_struct *mm = get_task_mm(task);
|
||||
if (mm)
|
||||
down_read(&mm->mmap_sem);
|
||||
return mm;
|
||||
@ -383,10 +388,10 @@ static inline int is_code(unsigned long val)
|
||||
{
|
||||
return val == ESCAPE_CODE;
|
||||
}
|
||||
|
||||
|
||||
|
||||
/* "acquire" as many cpu buffer slots as we can */
|
||||
static unsigned long get_slots(struct oprofile_cpu_buffer * b)
|
||||
static unsigned long get_slots(struct oprofile_cpu_buffer *b)
|
||||
{
|
||||
unsigned long head = b->head_pos;
|
||||
unsigned long tail = b->tail_pos;
|
||||
@ -412,7 +417,7 @@ static unsigned long get_slots(struct oprofile_cpu_buffer * b)
|
||||
}
|
||||
|
||||
|
||||
static void increment_tail(struct oprofile_cpu_buffer * b)
|
||||
static void increment_tail(struct oprofile_cpu_buffer *b)
|
||||
{
|
||||
unsigned long new_tail = b->tail_pos + 1;
|
||||
|
||||
@ -435,8 +440,8 @@ static void process_task_mortuary(void)
|
||||
{
|
||||
unsigned long flags;
|
||||
LIST_HEAD(local_dead_tasks);
|
||||
struct task_struct * task;
|
||||
struct task_struct * ttask;
|
||||
struct task_struct *task;
|
||||
struct task_struct *ttask;
|
||||
|
||||
spin_lock_irqsave(&task_mortuary, flags);
|
||||
|
||||
@ -493,7 +498,7 @@ void sync_buffer(int cpu)
|
||||
{
|
||||
struct oprofile_cpu_buffer *cpu_buf = &per_cpu(cpu_buffer, cpu);
|
||||
struct mm_struct *mm = NULL;
|
||||
struct task_struct * new;
|
||||
struct task_struct *new;
|
||||
unsigned long cookie = 0;
|
||||
int in_kernel = 1;
|
||||
unsigned int i;
|
||||
@ -501,7 +506,7 @@ void sync_buffer(int cpu)
|
||||
unsigned long available;
|
||||
|
||||
mutex_lock(&buffer_mutex);
|
||||
|
||||
|
||||
add_cpu_switch(cpu);
|
||||
|
||||
/* Remember, only we can modify tail_pos */
|
||||
@ -509,8 +514,8 @@ void sync_buffer(int cpu)
|
||||
available = get_slots(cpu_buf);
|
||||
|
||||
for (i = 0; i < available; ++i) {
|
||||
struct op_sample * s = &cpu_buf->buffer[cpu_buf->tail_pos];
|
||||
|
||||
struct op_sample *s = &cpu_buf->buffer[cpu_buf->tail_pos];
|
||||
|
||||
if (is_code(s->eip)) {
|
||||
if (s->event <= CPU_IS_KERNEL) {
|
||||
/* kernel/userspace switch */
|
||||
@ -522,7 +527,7 @@ void sync_buffer(int cpu)
|
||||
state = sb_bt_start;
|
||||
add_trace_begin();
|
||||
} else {
|
||||
struct mm_struct * oldmm = mm;
|
||||
struct mm_struct *oldmm = mm;
|
||||
|
||||
/* userspace context switch */
|
||||
new = (struct task_struct *)s->event;
|
||||
@ -533,13 +538,11 @@ void sync_buffer(int cpu)
|
||||
cookie = get_exec_dcookie(mm);
|
||||
add_user_ctx_switch(new, cookie);
|
||||
}
|
||||
} else {
|
||||
if (state >= sb_bt_start &&
|
||||
!add_sample(mm, s, in_kernel)) {
|
||||
if (state == sb_bt_start) {
|
||||
state = sb_bt_ignore;
|
||||
atomic_inc(&oprofile_stats.bt_lost_no_mapping);
|
||||
}
|
||||
} else if (state >= sb_bt_start &&
|
||||
!add_sample(mm, s, in_kernel)) {
|
||||
if (state == sb_bt_start) {
|
||||
state = sb_bt_ignore;
|
||||
atomic_inc(&oprofile_stats.bt_lost_no_mapping);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user