Stricted
139 lines
3.9 KiB
C
139 lines
3.9 KiB
C
#ifndef __KMEM_MON_H__
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#define __KMEM_MON_H__
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#include <linux/sched.h>
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#ifdef CONFIG_MTPROF_KMEM
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#ifndef TRUE
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/** @def TRUE Logical value of true. */
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#define TRUE 1
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#endif
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#ifndef FALSE
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/** @def FALSE Logical value of false. */
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#define FALSE 0
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#endif
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/* TODO: relationship amoung differnent definations */
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#define MAX_PROCESS_NUM (16*1024) /* MAX PID defined by linux: 32 *1024 - 1 */
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#define MAX_KMEM_MON_NUM (20*1024)
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#define MAX_ADDR_TABLE (64*1024) /* NOTICE: for the hash */
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#define MAX_CALLER_TABLE (80*1024)
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#define MAX_FAIL_PARAMETER 256
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#define MAX_MEM_CLASS_NUM 64
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#define MAX_CMD_LINE 64
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#define MAX_PID_LEN 6 /* because 16*1024 = 16384 */
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#define MAX_ADDR_IDX (16*1024) /* 14 */
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#define ADDR_SHIFT 14
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typedef enum {
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KMEM_MON_TYPE_KMALLOC = 0, /* kmalloc() or kfree(). */
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KMEM_MON_TYPE_KMEM_CACHE, /* kmem_cache_*(). */
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KMEM_MON_TYPE_PAGES, /* __get_free_pages() and friends. */
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KMEM_MON_TYPE_PMEM,
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KMEM_MON_TYPE_M4U,
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KMEM_MON_TYPE_VMALLOC,
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KMEM_MON_TYPE_ASHMEM,
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KMEM_MON_TYPE_KMALLOCWRAPPER,
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} MEM_CLASS_T;
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typedef struct mem_class_info_struct {
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MEM_CLASS_T mem_class;
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int index[MAX_KMEM_MON_NUM];
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} mem_class_info_t;
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/* TODO: keep caller backtrace */
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typedef struct caller_info_struct {
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unsigned long caller_addr;
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int bytes_req, bytes_alloc;
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int bytes_free;
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int freq_alloc, freq_free;
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int pid;
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MEM_CLASS_T mem_class;
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int next_node;
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} caller_info_t;
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/* NOTICE: if the node is not used, caller_hash == 0 */
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typedef struct addr_info_struct {
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unsigned long addr;
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int caller_hash;
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int next;
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} addr_info_t;
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typedef struct process_info_struct {
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pid_t pid;
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pid_t tgid;
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char cmdline[MAX_CMD_LINE];
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char comm[TASK_COMM_LEN]; /* executable name excluding path
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- access with [gs]et_task_comm (which lock
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it with task_lock())
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- initialized normally by setup_new_exec */
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int start_idx; /* ->kmalloc->pem... */
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/* TODO: use an array to arrage all mem nodes */
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} process_info_t;
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/* ========================================================================== */
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/**
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* @struct kmem_info_struct
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*
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* @brief keep information for kernel memory monitoring
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*
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*/
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/**
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* @typedef kmem_mon_info_t
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* @brief Type definition for the kmem_mon_info_struct.
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*/
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typedef struct mem_info_struct {
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MEM_CLASS_T mem_class;
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/* these information should be kept in caller table */
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size_t total_bytes_req;
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size_t total_bytes_alloc;
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size_t total_bytes_free;
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int alloc_freq;
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int free_freq;
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int peak_every_req; /* peak size of a single requirment */
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unsigned long peak_caller; /* code position' */
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/* ends */
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/* TODO: allocation failures */
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#if 0
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int fail_freq;
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unsigned long fail_caller;
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char last_fail_parameter[MAX_FAIL_PARAMETER]; /* only record the latest failure's paramter */
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#endif
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int caller_start_idx;
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int next_mem_node;
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/* */
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/* TODO: additional info for different memory class */
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/* */
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} mem_info_t;
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#endif /* #ifdef CONFIG_MTPROF_KMEM */
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extern void kmem_mon_kmalloc(unsigned long caller, const void *addr, int bytes_req,
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int bytes_alloc);
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extern void kmem_mon_kfree(unsigned long caller, const void *addr);
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extern void kmem_mon_pmem_alloc(int req, int alloc);
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extern void kmem_mon_pmem_free(int size);
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extern void kmem_mon_m4u_alloc(int req, int alloc);
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extern void kmem_mon_m4u_dealloc(const unsigned int addr, const unsigned int req_size);
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extern void kmem_mon_vmalloc(unsigned long caller, const void *addr, int bytes_req,
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int bytes_alloc);
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extern void kmem_mon_vfree(int size);
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extern void kmem_mon_ashmem_mmap(int size);
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extern void kmem_mon_ashmem_release(int size);
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extern void kmem_mon_kmallocwrapper(unsigned long caller, int size);
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/* extern void kmem_mon_kmallocwrapper(unsigned long caller, const void *addr, int bytes_req, int bytes_alloc); */
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extern void kmem_mon_kfreewrapper(const void *addr);
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extern void kmem_mon_kmem_cache_alloc(unsigned long caller, const void *addr, size_t bytes_req,
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size_t bytes_alloc);
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extern void kmem_mon_kmem_cache_free(unsigned long caller, const void *addr);
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#endif /* __KMEM_MON_H__ */
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