perf.c File Reference

#include <kernel/drivers/perf.h>
#include <kernel/cpu/cpu.h>
#include <kernel/fs/file.h>
#include <kernel/fs/sysfs.h>
#include <kernel/fs/vfs.h>
#include <kernel/log/panic.h>
#include <kernel/mem/pmm.h>
#include <kernel/sched/sched.h>
#include <kernel/sched/sys_time.h>
#include <kernel/sched/timer.h>
#include <kernel/sync/lock.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/io.h>
#include <sys/list.h>
#include <sys/math.h>

Go to the source code of this file.

Functions
static uint64_t	perf_cpu_read (file_t *file, void *buffer, uint64_t count, uint64_t *offset)
static uint64_t	perf_mem_read (file_t *file, void *buffer, uint64_t count, uint64_t *offset)
void	perf_cpu_ctx_init (perf_cpu_ctx_t *ctx)
	Initializes a per-CPU performance context, must be called on the CPU that owns the context.
void	perf_process_ctx_init (perf_process_ctx_t *ctx)
	Initializes a per-process performance context.
void	perf_thread_ctx_init (perf_thread_ctx_t *ctx)
	Initializes a per-thread performance context.
void	perf_init (void)
	Initializes the performance driver.
void	perf_interrupt_begin (cpu_t *self)
	Called at the beginning of an interrupt to update cpu performance data.
void	perf_interrupt_end (cpu_t *self)
	Called at the end of an interrupt to update cpu performance data.
void	perf_syscall_begin (void)
	Called at the beginning of a syscall to update process performance data.
void	perf_syscall_end (void)
	Called at the end of a syscall to update process performance data.

Variables
static dentry_t *	perfDir = NULL
static dentry_t *	cpuFile = NULL
static dentry_t *	memFile = NULL
static file_ops_t	cpuOps
static file_ops_t	memOps

Function Documentation

perf_cpu_read()

static uint64_t perf_cpu_read ( file_t *  file, void *  buffer, uint64_t  count, uint64_t *  offset  )

static

Definition at line 25 of file perf.c.

References perf_cpu_ctx_t::activeClocks, buffer, BUFFER_READ, count, cpu_amount(), CPU_FOR_EACH, EIO, ERR, errno, file, free(), cpu_t::id, perf_cpu_ctx_t::idleClocks, perf_cpu_ctx_t::interruptClocks, perf_cpu_ctx_t::interruptEnd, perf_cpu_ctx_t::lock, lock_acquire(), lock_release(), malloc(), NULL, cpu_t::perf, sched_is_idle(), sprintf(), strcpy(), strlen(), sys_time_uptime(), and uptime().

perf_mem_read()

static uint64_t perf_mem_read ( file_t *  file, void *  buffer, uint64_t  count, uint64_t *  offset  )

static

Definition at line 80 of file perf.c.

References buffer, BUFFER_READ, count, EIO, ERR, errno, file, free(), malloc(), NULL, pmm_free_amount(), pmm_total_amount(), pmm_used_amount(), and sprintf().

Variable Documentation

cpuFile

dentry_t* cpuFile = NULL

static

Definition at line 22 of file perf.c.

Referenced by perf_init().

cpuOps

file_ops_t cpuOps

static

Initial value:

= {
    .read = perf_cpu_read,
}

Definition at line 76 of file perf.c.

Referenced by perf_init().

memFile

dentry_t* memFile = NULL

static

Definition at line 23 of file perf.c.

Referenced by perf_init().

memOps

file_ops_t memOps

static

Initial value:

= {
    .read = perf_mem_read,
}

Definition at line 104 of file perf.c.

Referenced by perf_init().

perfDir

dentry_t* perfDir = NULL

static

Definition at line 21 of file perf.c.

Referenced by perf_init().