mirror of https://gitee.com/openkylin/linux.git
944 lines
21 KiB
C
944 lines
21 KiB
C
/*
|
|
* Slabinfo: Tool to get reports about slabs
|
|
*
|
|
* (C) 2007 sgi, Christoph Lameter <clameter@sgi.com>
|
|
*
|
|
* Compile by:
|
|
*
|
|
* gcc -o slabinfo slabinfo.c
|
|
*/
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <sys/types.h>
|
|
#include <dirent.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include <stdarg.h>
|
|
#include <getopt.h>
|
|
#include <regex.h>
|
|
|
|
#define MAX_SLABS 500
|
|
#define MAX_ALIASES 500
|
|
#define MAX_NODES 1024
|
|
|
|
struct slabinfo {
|
|
char *name;
|
|
int alias;
|
|
int refs;
|
|
int aliases, align, cache_dma, cpu_slabs, destroy_by_rcu;
|
|
int hwcache_align, object_size, objs_per_slab;
|
|
int sanity_checks, slab_size, store_user, trace;
|
|
int order, poison, reclaim_account, red_zone;
|
|
unsigned long partial, objects, slabs;
|
|
int numa[MAX_NODES];
|
|
int numa_partial[MAX_NODES];
|
|
} slabinfo[MAX_SLABS];
|
|
|
|
struct aliasinfo {
|
|
char *name;
|
|
char *ref;
|
|
struct slabinfo *slab;
|
|
} aliasinfo[MAX_ALIASES];
|
|
|
|
int slabs = 0;
|
|
int aliases = 0;
|
|
int alias_targets = 0;
|
|
int highest_node = 0;
|
|
|
|
char buffer[4096];
|
|
|
|
int show_alias = 0;
|
|
int show_slab = 0;
|
|
int skip_zero = 1;
|
|
int show_numa = 0;
|
|
int show_track = 0;
|
|
int show_first_alias = 0;
|
|
int validate = 0;
|
|
int shrink = 0;
|
|
int show_inverted = 0;
|
|
int show_single_ref = 0;
|
|
int show_totals = 0;
|
|
int sort_size = 0;
|
|
|
|
int page_size;
|
|
|
|
regex_t pattern;
|
|
|
|
void fatal(const char *x, ...)
|
|
{
|
|
va_list ap;
|
|
|
|
va_start(ap, x);
|
|
vfprintf(stderr, x, ap);
|
|
va_end(ap);
|
|
exit(1);
|
|
}
|
|
|
|
void usage(void)
|
|
{
|
|
printf("slabinfo [-ahnpvtsz] [slab-regexp]\n"
|
|
"-a|--aliases Show aliases\n"
|
|
"-h|--help Show usage information\n"
|
|
"-n|--numa Show NUMA information\n"
|
|
"-s|--shrink Shrink slabs\n"
|
|
"-v|--validate Validate slabs\n"
|
|
"-t|--tracking Show alloc/free information\n"
|
|
"-T|--Totals Show summary information\n"
|
|
"-l|--slabs Show slabs\n"
|
|
"-S|--Size Sort by size\n"
|
|
"-z|--zero Include empty slabs\n"
|
|
"-f|--first-alias Show first alias\n"
|
|
"-i|--inverted Inverted list\n"
|
|
"-1|--1ref Single reference\n"
|
|
);
|
|
}
|
|
|
|
unsigned long read_obj(char *name)
|
|
{
|
|
FILE *f = fopen(name, "r");
|
|
|
|
if (!f)
|
|
buffer[0] = 0;
|
|
else {
|
|
if (!fgets(buffer,sizeof(buffer), f))
|
|
buffer[0] = 0;
|
|
fclose(f);
|
|
if (buffer[strlen(buffer)] == '\n')
|
|
buffer[strlen(buffer)] = 0;
|
|
}
|
|
return strlen(buffer);
|
|
}
|
|
|
|
|
|
/*
|
|
* Get the contents of an attribute
|
|
*/
|
|
unsigned long get_obj(char *name)
|
|
{
|
|
if (!read_obj(name))
|
|
return 0;
|
|
|
|
return atol(buffer);
|
|
}
|
|
|
|
unsigned long get_obj_and_str(char *name, char **x)
|
|
{
|
|
unsigned long result = 0;
|
|
char *p;
|
|
|
|
*x = NULL;
|
|
|
|
if (!read_obj(name)) {
|
|
x = NULL;
|
|
return 0;
|
|
}
|
|
result = strtoul(buffer, &p, 10);
|
|
while (*p == ' ')
|
|
p++;
|
|
if (*p)
|
|
*x = strdup(p);
|
|
return result;
|
|
}
|
|
|
|
void set_obj(struct slabinfo *s, char *name, int n)
|
|
{
|
|
char x[100];
|
|
|
|
sprintf(x, "%s/%s", s->name, name);
|
|
|
|
FILE *f = fopen(x, "w");
|
|
|
|
if (!f)
|
|
fatal("Cannot write to %s\n", x);
|
|
|
|
fprintf(f, "%d\n", n);
|
|
fclose(f);
|
|
}
|
|
|
|
/*
|
|
* Put a size string together
|
|
*/
|
|
int store_size(char *buffer, unsigned long value)
|
|
{
|
|
unsigned long divisor = 1;
|
|
char trailer = 0;
|
|
int n;
|
|
|
|
if (value > 1000000000UL) {
|
|
divisor = 100000000UL;
|
|
trailer = 'G';
|
|
} else if (value > 1000000UL) {
|
|
divisor = 100000UL;
|
|
trailer = 'M';
|
|
} else if (value > 1000UL) {
|
|
divisor = 100;
|
|
trailer = 'K';
|
|
}
|
|
|
|
value /= divisor;
|
|
n = sprintf(buffer, "%ld",value);
|
|
if (trailer) {
|
|
buffer[n] = trailer;
|
|
n++;
|
|
buffer[n] = 0;
|
|
}
|
|
if (divisor != 1) {
|
|
memmove(buffer + n - 2, buffer + n - 3, 4);
|
|
buffer[n-2] = '.';
|
|
n++;
|
|
}
|
|
return n;
|
|
}
|
|
|
|
void decode_numa_list(int *numa, char *t)
|
|
{
|
|
int node;
|
|
int nr;
|
|
|
|
memset(numa, 0, MAX_NODES * sizeof(int));
|
|
|
|
while (*t == 'N') {
|
|
t++;
|
|
node = strtoul(t, &t, 10);
|
|
if (*t == '=') {
|
|
t++;
|
|
nr = strtoul(t, &t, 10);
|
|
numa[node] = nr;
|
|
if (node > highest_node)
|
|
highest_node = node;
|
|
}
|
|
while (*t == ' ')
|
|
t++;
|
|
}
|
|
}
|
|
|
|
void slab_validate(struct slabinfo *s)
|
|
{
|
|
set_obj(s, "validate", 1);
|
|
}
|
|
|
|
void slab_shrink(struct slabinfo *s)
|
|
{
|
|
set_obj(s, "shrink", 1);
|
|
}
|
|
|
|
int line = 0;
|
|
|
|
void first_line(void)
|
|
{
|
|
printf("Name Objects Objsize Space "
|
|
"Slabs/Part/Cpu O/S O %%Fr %%Ef Flg\n");
|
|
}
|
|
|
|
/*
|
|
* Find the shortest alias of a slab
|
|
*/
|
|
struct aliasinfo *find_one_alias(struct slabinfo *find)
|
|
{
|
|
struct aliasinfo *a;
|
|
struct aliasinfo *best = NULL;
|
|
|
|
for(a = aliasinfo;a < aliasinfo + aliases; a++) {
|
|
if (a->slab == find &&
|
|
(!best || strlen(best->name) < strlen(a->name))) {
|
|
best = a;
|
|
if (strncmp(a->name,"kmall", 5) == 0)
|
|
return best;
|
|
}
|
|
}
|
|
if (best)
|
|
return best;
|
|
fatal("Cannot find alias for %s\n", find->name);
|
|
return NULL;
|
|
}
|
|
|
|
unsigned long slab_size(struct slabinfo *s)
|
|
{
|
|
return s->slabs * (page_size << s->order);
|
|
}
|
|
|
|
|
|
void slabcache(struct slabinfo *s)
|
|
{
|
|
char size_str[20];
|
|
char dist_str[40];
|
|
char flags[20];
|
|
char *p = flags;
|
|
|
|
if (skip_zero && !s->slabs)
|
|
return;
|
|
|
|
store_size(size_str, slab_size(s));
|
|
sprintf(dist_str,"%lu/%lu/%d", s->slabs, s->partial, s->cpu_slabs);
|
|
|
|
if (!line++)
|
|
first_line();
|
|
|
|
if (s->aliases)
|
|
*p++ = '*';
|
|
if (s->cache_dma)
|
|
*p++ = 'd';
|
|
if (s->hwcache_align)
|
|
*p++ = 'A';
|
|
if (s->poison)
|
|
*p++ = 'P';
|
|
if (s->reclaim_account)
|
|
*p++ = 'a';
|
|
if (s->red_zone)
|
|
*p++ = 'Z';
|
|
if (s->sanity_checks)
|
|
*p++ = 'F';
|
|
if (s->store_user)
|
|
*p++ = 'U';
|
|
if (s->trace)
|
|
*p++ = 'T';
|
|
|
|
*p = 0;
|
|
printf("%-21s %8ld %7d %8s %14s %4d %1d %3ld %3ld %s\n",
|
|
s->name, s->objects, s->object_size, size_str, dist_str,
|
|
s->objs_per_slab, s->order,
|
|
s->slabs ? (s->partial * 100) / s->slabs : 100,
|
|
s->slabs ? (s->objects * s->object_size * 100) /
|
|
(s->slabs * (page_size << s->order)) : 100,
|
|
flags);
|
|
}
|
|
|
|
void slab_numa(struct slabinfo *s)
|
|
{
|
|
int node;
|
|
|
|
if (!highest_node)
|
|
fatal("No NUMA information available.\n");
|
|
|
|
if (skip_zero && !s->slabs)
|
|
return;
|
|
|
|
if (!line) {
|
|
printf("\nSlab Node ");
|
|
for(node = 0; node <= highest_node; node++)
|
|
printf(" %4d", node);
|
|
printf("\n----------------------");
|
|
for(node = 0; node <= highest_node; node++)
|
|
printf("-----");
|
|
printf("\n");
|
|
}
|
|
printf("%-21s ", s->name);
|
|
for(node = 0; node <= highest_node; node++) {
|
|
char b[20];
|
|
|
|
store_size(b, s->numa[node]);
|
|
printf(" %4s", b);
|
|
}
|
|
printf("\n");
|
|
line++;
|
|
}
|
|
|
|
void show_tracking(struct slabinfo *s)
|
|
{
|
|
printf("\n%s: Calls to allocate a slab object\n", s->name);
|
|
printf("---------------------------------------------------\n");
|
|
if (read_obj("alloc_calls"))
|
|
printf(buffer);
|
|
|
|
printf("%s: Calls to free a slab object\n", s->name);
|
|
printf("-----------------------------------------------\n");
|
|
if (read_obj("free_calls"))
|
|
printf(buffer);
|
|
|
|
}
|
|
|
|
void totals(void)
|
|
{
|
|
struct slabinfo *s;
|
|
|
|
int used_slabs = 0;
|
|
char b1[20], b2[20], b3[20], b4[20];
|
|
unsigned long long max = 1ULL << 63;
|
|
|
|
/* Object size */
|
|
unsigned long long min_objsize = max, max_objsize = 0, avg_objsize;
|
|
|
|
/* Number of partial slabs in a slabcache */
|
|
unsigned long long min_partial = max, max_partial = 0,
|
|
avg_partial, total_partial = 0;
|
|
|
|
/* Number of slabs in a slab cache */
|
|
unsigned long long min_slabs = max, max_slabs = 0,
|
|
avg_slabs, total_slabs = 0;
|
|
|
|
/* Size of the whole slab */
|
|
unsigned long long min_size = max, max_size = 0,
|
|
avg_size, total_size = 0;
|
|
|
|
/* Bytes used for object storage in a slab */
|
|
unsigned long long min_used = max, max_used = 0,
|
|
avg_used, total_used = 0;
|
|
|
|
/* Waste: Bytes used for alignment and padding */
|
|
unsigned long long min_waste = max, max_waste = 0,
|
|
avg_waste, total_waste = 0;
|
|
/* Number of objects in a slab */
|
|
unsigned long long min_objects = max, max_objects = 0,
|
|
avg_objects, total_objects = 0;
|
|
/* Waste per object */
|
|
unsigned long long min_objwaste = max,
|
|
max_objwaste = 0, avg_objwaste,
|
|
total_objwaste = 0;
|
|
|
|
/* Memory per object */
|
|
unsigned long long min_memobj = max,
|
|
max_memobj = 0, avg_memobj,
|
|
total_objsize = 0;
|
|
|
|
/* Percentage of partial slabs per slab */
|
|
unsigned long min_ppart = 100, max_ppart = 0,
|
|
avg_ppart, total_ppart = 0;
|
|
|
|
/* Number of objects in partial slabs */
|
|
unsigned long min_partobj = max, max_partobj = 0,
|
|
avg_partobj, total_partobj = 0;
|
|
|
|
/* Percentage of partial objects of all objects in a slab */
|
|
unsigned long min_ppartobj = 100, max_ppartobj = 0,
|
|
avg_ppartobj, total_ppartobj = 0;
|
|
|
|
|
|
for (s = slabinfo; s < slabinfo + slabs; s++) {
|
|
unsigned long long size;
|
|
unsigned long used;
|
|
unsigned long long wasted;
|
|
unsigned long long objwaste;
|
|
long long objects_in_partial_slabs;
|
|
unsigned long percentage_partial_slabs;
|
|
unsigned long percentage_partial_objs;
|
|
|
|
if (!s->slabs || !s->objects)
|
|
continue;
|
|
|
|
used_slabs++;
|
|
|
|
size = slab_size(s);
|
|
used = s->objects * s->object_size;
|
|
wasted = size - used;
|
|
objwaste = s->slab_size - s->object_size;
|
|
|
|
objects_in_partial_slabs = s->objects -
|
|
(s->slabs - s->partial - s ->cpu_slabs) *
|
|
s->objs_per_slab;
|
|
|
|
if (objects_in_partial_slabs < 0)
|
|
objects_in_partial_slabs = 0;
|
|
|
|
percentage_partial_slabs = s->partial * 100 / s->slabs;
|
|
if (percentage_partial_slabs > 100)
|
|
percentage_partial_slabs = 100;
|
|
|
|
percentage_partial_objs = objects_in_partial_slabs * 100
|
|
/ s->objects;
|
|
|
|
if (percentage_partial_objs > 100)
|
|
percentage_partial_objs = 100;
|
|
|
|
if (s->object_size < min_objsize)
|
|
min_objsize = s->object_size;
|
|
if (s->partial < min_partial)
|
|
min_partial = s->partial;
|
|
if (s->slabs < min_slabs)
|
|
min_slabs = s->slabs;
|
|
if (size < min_size)
|
|
min_size = size;
|
|
if (wasted < min_waste)
|
|
min_waste = wasted;
|
|
if (objwaste < min_objwaste)
|
|
min_objwaste = objwaste;
|
|
if (s->objects < min_objects)
|
|
min_objects = s->objects;
|
|
if (used < min_used)
|
|
min_used = used;
|
|
if (objects_in_partial_slabs < min_partobj)
|
|
min_partobj = objects_in_partial_slabs;
|
|
if (percentage_partial_slabs < min_ppart)
|
|
min_ppart = percentage_partial_slabs;
|
|
if (percentage_partial_objs < min_ppartobj)
|
|
min_ppartobj = percentage_partial_objs;
|
|
if (s->slab_size < min_memobj)
|
|
min_memobj = s->slab_size;
|
|
|
|
if (s->object_size > max_objsize)
|
|
max_objsize = s->object_size;
|
|
if (s->partial > max_partial)
|
|
max_partial = s->partial;
|
|
if (s->slabs > max_slabs)
|
|
max_slabs = s->slabs;
|
|
if (size > max_size)
|
|
max_size = size;
|
|
if (wasted > max_waste)
|
|
max_waste = wasted;
|
|
if (objwaste > max_objwaste)
|
|
max_objwaste = objwaste;
|
|
if (s->objects > max_objects)
|
|
max_objects = s->objects;
|
|
if (used > max_used)
|
|
max_used = used;
|
|
if (objects_in_partial_slabs > max_partobj)
|
|
max_partobj = objects_in_partial_slabs;
|
|
if (percentage_partial_slabs > max_ppart)
|
|
max_ppart = percentage_partial_slabs;
|
|
if (percentage_partial_objs > max_ppartobj)
|
|
max_ppartobj = percentage_partial_objs;
|
|
if (s->slab_size > max_memobj)
|
|
max_memobj = s->slab_size;
|
|
|
|
total_partial += s->partial;
|
|
total_slabs += s->slabs;
|
|
total_size += size;
|
|
total_waste += wasted;
|
|
|
|
total_objects += s->objects;
|
|
total_used += used;
|
|
total_partobj += objects_in_partial_slabs;
|
|
total_ppart += percentage_partial_slabs;
|
|
total_ppartobj += percentage_partial_objs;
|
|
|
|
total_objwaste += s->objects * objwaste;
|
|
total_objsize += s->objects * s->slab_size;
|
|
}
|
|
|
|
if (!total_objects) {
|
|
printf("No objects\n");
|
|
return;
|
|
}
|
|
if (!used_slabs) {
|
|
printf("No slabs\n");
|
|
return;
|
|
}
|
|
|
|
/* Per slab averages */
|
|
avg_partial = total_partial / used_slabs;
|
|
avg_slabs = total_slabs / used_slabs;
|
|
avg_size = total_size / used_slabs;
|
|
avg_waste = total_waste / used_slabs;
|
|
|
|
avg_objects = total_objects / used_slabs;
|
|
avg_used = total_used / used_slabs;
|
|
avg_partobj = total_partobj / used_slabs;
|
|
avg_ppart = total_ppart / used_slabs;
|
|
avg_ppartobj = total_ppartobj / used_slabs;
|
|
|
|
/* Per object object sizes */
|
|
avg_objsize = total_used / total_objects;
|
|
avg_objwaste = total_objwaste / total_objects;
|
|
avg_partobj = total_partobj * 100 / total_objects;
|
|
avg_memobj = total_objsize / total_objects;
|
|
|
|
printf("Slabcache Totals\n");
|
|
printf("----------------\n");
|
|
printf("Slabcaches : %3d Aliases : %3d->%-3d Active: %3d\n",
|
|
slabs, aliases, alias_targets, used_slabs);
|
|
|
|
store_size(b1, total_size);store_size(b2, total_waste);
|
|
store_size(b3, total_waste * 100 / total_used);
|
|
printf("Memory used: %6s # Loss : %6s MRatio: %6s%%\n", b1, b2, b3);
|
|
|
|
store_size(b1, total_objects);store_size(b2, total_partobj);
|
|
store_size(b3, total_partobj * 100 / total_objects);
|
|
printf("# Objects : %6s # PartObj: %6s ORatio: %6s%%\n", b1, b2, b3);
|
|
|
|
printf("\n");
|
|
printf("Per Cache Average Min Max Total\n");
|
|
printf("---------------------------------------------------------\n");
|
|
|
|
store_size(b1, avg_objects);store_size(b2, min_objects);
|
|
store_size(b3, max_objects);store_size(b4, total_objects);
|
|
printf("#Objects %10s %10s %10s %10s\n",
|
|
b1, b2, b3, b4);
|
|
|
|
store_size(b1, avg_slabs);store_size(b2, min_slabs);
|
|
store_size(b3, max_slabs);store_size(b4, total_slabs);
|
|
printf("#Slabs %10s %10s %10s %10s\n",
|
|
b1, b2, b3, b4);
|
|
|
|
store_size(b1, avg_partial);store_size(b2, min_partial);
|
|
store_size(b3, max_partial);store_size(b4, total_partial);
|
|
printf("#PartSlab %10s %10s %10s %10s\n",
|
|
b1, b2, b3, b4);
|
|
store_size(b1, avg_ppart);store_size(b2, min_ppart);
|
|
store_size(b3, max_ppart);
|
|
store_size(b4, total_partial * 100 / total_slabs);
|
|
printf("%%PartSlab %10s%% %10s%% %10s%% %10s%%\n",
|
|
b1, b2, b3, b4);
|
|
|
|
store_size(b1, avg_partobj);store_size(b2, min_partobj);
|
|
store_size(b3, max_partobj);
|
|
store_size(b4, total_partobj);
|
|
printf("PartObjs %10s %10s %10s %10s\n",
|
|
b1, b2, b3, b4);
|
|
|
|
store_size(b1, avg_ppartobj);store_size(b2, min_ppartobj);
|
|
store_size(b3, max_ppartobj);
|
|
store_size(b4, total_partobj * 100 / total_objects);
|
|
printf("%% PartObj %10s%% %10s%% %10s%% %10s%%\n",
|
|
b1, b2, b3, b4);
|
|
|
|
store_size(b1, avg_size);store_size(b2, min_size);
|
|
store_size(b3, max_size);store_size(b4, total_size);
|
|
printf("Memory %10s %10s %10s %10s\n",
|
|
b1, b2, b3, b4);
|
|
|
|
store_size(b1, avg_used);store_size(b2, min_used);
|
|
store_size(b3, max_used);store_size(b4, total_used);
|
|
printf("Used %10s %10s %10s %10s\n",
|
|
b1, b2, b3, b4);
|
|
|
|
store_size(b1, avg_waste);store_size(b2, min_waste);
|
|
store_size(b3, max_waste);store_size(b4, total_waste);
|
|
printf("Loss %10s %10s %10s %10s\n",
|
|
b1, b2, b3, b4);
|
|
|
|
printf("\n");
|
|
printf("Per Object Average Min Max\n");
|
|
printf("---------------------------------------------\n");
|
|
|
|
store_size(b1, avg_memobj);store_size(b2, min_memobj);
|
|
store_size(b3, max_memobj);
|
|
printf("Memory %10s %10s %10s\n",
|
|
b1, b2, b3);
|
|
store_size(b1, avg_objsize);store_size(b2, min_objsize);
|
|
store_size(b3, max_objsize);
|
|
printf("User %10s %10s %10s\n",
|
|
b1, b2, b3);
|
|
|
|
store_size(b1, avg_objwaste);store_size(b2, min_objwaste);
|
|
store_size(b3, max_objwaste);
|
|
printf("Loss %10s %10s %10s\n",
|
|
b1, b2, b3);
|
|
}
|
|
|
|
void sort_slabs(void)
|
|
{
|
|
struct slabinfo *s1,*s2;
|
|
|
|
for (s1 = slabinfo; s1 < slabinfo + slabs; s1++) {
|
|
for (s2 = s1 + 1; s2 < slabinfo + slabs; s2++) {
|
|
int result;
|
|
|
|
if (sort_size)
|
|
result = slab_size(s1) < slab_size(s2);
|
|
else
|
|
result = strcasecmp(s1->name, s2->name);
|
|
|
|
if (show_inverted)
|
|
result = -result;
|
|
|
|
if (result > 0) {
|
|
struct slabinfo t;
|
|
|
|
memcpy(&t, s1, sizeof(struct slabinfo));
|
|
memcpy(s1, s2, sizeof(struct slabinfo));
|
|
memcpy(s2, &t, sizeof(struct slabinfo));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void sort_aliases(void)
|
|
{
|
|
struct aliasinfo *a1,*a2;
|
|
|
|
for (a1 = aliasinfo; a1 < aliasinfo + aliases; a1++) {
|
|
for (a2 = a1 + 1; a2 < aliasinfo + aliases; a2++) {
|
|
char *n1, *n2;
|
|
|
|
n1 = a1->name;
|
|
n2 = a2->name;
|
|
if (show_alias && !show_inverted) {
|
|
n1 = a1->ref;
|
|
n2 = a2->ref;
|
|
}
|
|
if (strcasecmp(n1, n2) > 0) {
|
|
struct aliasinfo t;
|
|
|
|
memcpy(&t, a1, sizeof(struct aliasinfo));
|
|
memcpy(a1, a2, sizeof(struct aliasinfo));
|
|
memcpy(a2, &t, sizeof(struct aliasinfo));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void link_slabs(void)
|
|
{
|
|
struct aliasinfo *a;
|
|
struct slabinfo *s;
|
|
|
|
for (a = aliasinfo; a < aliasinfo + aliases; a++) {
|
|
|
|
for(s = slabinfo; s < slabinfo + slabs; s++)
|
|
if (strcmp(a->ref, s->name) == 0) {
|
|
a->slab = s;
|
|
s->refs++;
|
|
break;
|
|
}
|
|
if (s == slabinfo + slabs)
|
|
fatal("Unresolved alias %s\n", a->ref);
|
|
}
|
|
}
|
|
|
|
void alias(void)
|
|
{
|
|
struct aliasinfo *a;
|
|
char *active = NULL;
|
|
|
|
sort_aliases();
|
|
link_slabs();
|
|
|
|
for(a = aliasinfo; a < aliasinfo + aliases; a++) {
|
|
|
|
if (!show_single_ref && a->slab->refs == 1)
|
|
continue;
|
|
|
|
if (!show_inverted) {
|
|
if (active) {
|
|
if (strcmp(a->slab->name, active) == 0) {
|
|
printf(" %s", a->name);
|
|
continue;
|
|
}
|
|
}
|
|
printf("\n%-20s <- %s", a->slab->name, a->name);
|
|
active = a->slab->name;
|
|
}
|
|
else
|
|
printf("%-20s -> %s\n", a->name, a->slab->name);
|
|
}
|
|
if (active)
|
|
printf("\n");
|
|
}
|
|
|
|
|
|
void rename_slabs(void)
|
|
{
|
|
struct slabinfo *s;
|
|
struct aliasinfo *a;
|
|
|
|
for (s = slabinfo; s < slabinfo + slabs; s++) {
|
|
if (*s->name != ':')
|
|
continue;
|
|
|
|
if (s->refs > 1 && !show_first_alias)
|
|
continue;
|
|
|
|
a = find_one_alias(s);
|
|
|
|
s->name = a->name;
|
|
}
|
|
}
|
|
|
|
int slab_mismatch(char *slab)
|
|
{
|
|
return regexec(&pattern, slab, 0, NULL, 0);
|
|
}
|
|
|
|
void read_slab_dir(void)
|
|
{
|
|
DIR *dir;
|
|
struct dirent *de;
|
|
struct slabinfo *slab = slabinfo;
|
|
struct aliasinfo *alias = aliasinfo;
|
|
char *p;
|
|
char *t;
|
|
int count;
|
|
|
|
dir = opendir(".");
|
|
while ((de = readdir(dir))) {
|
|
if (de->d_name[0] == '.' ||
|
|
slab_mismatch(de->d_name))
|
|
continue;
|
|
switch (de->d_type) {
|
|
case DT_LNK:
|
|
alias->name = strdup(de->d_name);
|
|
count = readlink(de->d_name, buffer, sizeof(buffer));
|
|
|
|
if (count < 0)
|
|
fatal("Cannot read symlink %s\n", de->d_name);
|
|
|
|
buffer[count] = 0;
|
|
p = buffer + count;
|
|
while (p > buffer && p[-1] != '/')
|
|
p--;
|
|
alias->ref = strdup(p);
|
|
alias++;
|
|
break;
|
|
case DT_DIR:
|
|
if (chdir(de->d_name))
|
|
fatal("Unable to access slab %s\n", slab->name);
|
|
slab->name = strdup(de->d_name);
|
|
slab->alias = 0;
|
|
slab->refs = 0;
|
|
slab->aliases = get_obj("aliases");
|
|
slab->align = get_obj("align");
|
|
slab->cache_dma = get_obj("cache_dma");
|
|
slab->cpu_slabs = get_obj("cpu_slabs");
|
|
slab->destroy_by_rcu = get_obj("destroy_by_rcu");
|
|
slab->hwcache_align = get_obj("hwcache_align");
|
|
slab->object_size = get_obj("object_size");
|
|
slab->objects = get_obj("objects");
|
|
slab->objs_per_slab = get_obj("objs_per_slab");
|
|
slab->order = get_obj("order");
|
|
slab->partial = get_obj("partial");
|
|
slab->partial = get_obj_and_str("partial", &t);
|
|
decode_numa_list(slab->numa_partial, t);
|
|
slab->poison = get_obj("poison");
|
|
slab->reclaim_account = get_obj("reclaim_account");
|
|
slab->red_zone = get_obj("red_zone");
|
|
slab->sanity_checks = get_obj("sanity_checks");
|
|
slab->slab_size = get_obj("slab_size");
|
|
slab->slabs = get_obj_and_str("slabs", &t);
|
|
decode_numa_list(slab->numa, t);
|
|
slab->store_user = get_obj("store_user");
|
|
slab->trace = get_obj("trace");
|
|
chdir("..");
|
|
if (slab->name[0] == ':')
|
|
alias_targets++;
|
|
slab++;
|
|
break;
|
|
default :
|
|
fatal("Unknown file type %lx\n", de->d_type);
|
|
}
|
|
}
|
|
closedir(dir);
|
|
slabs = slab - slabinfo;
|
|
aliases = alias - aliasinfo;
|
|
if (slabs > MAX_SLABS)
|
|
fatal("Too many slabs\n");
|
|
if (aliases > MAX_ALIASES)
|
|
fatal("Too many aliases\n");
|
|
}
|
|
|
|
void output_slabs(void)
|
|
{
|
|
struct slabinfo *slab;
|
|
|
|
for (slab = slabinfo; slab < slabinfo + slabs; slab++) {
|
|
|
|
if (slab->alias)
|
|
continue;
|
|
|
|
|
|
if (show_numa)
|
|
slab_numa(slab);
|
|
else
|
|
if (show_track)
|
|
show_tracking(slab);
|
|
else
|
|
if (validate)
|
|
slab_validate(slab);
|
|
else
|
|
if (shrink)
|
|
slab_shrink(slab);
|
|
else {
|
|
if (show_slab)
|
|
slabcache(slab);
|
|
}
|
|
}
|
|
}
|
|
|
|
struct option opts[] = {
|
|
{ "aliases", 0, NULL, 'a' },
|
|
{ "slabs", 0, NULL, 'l' },
|
|
{ "numa", 0, NULL, 'n' },
|
|
{ "zero", 0, NULL, 'z' },
|
|
{ "help", 0, NULL, 'h' },
|
|
{ "validate", 0, NULL, 'v' },
|
|
{ "first-alias", 0, NULL, 'f' },
|
|
{ "shrink", 0, NULL, 's' },
|
|
{ "track", 0, NULL, 't'},
|
|
{ "inverted", 0, NULL, 'i'},
|
|
{ "1ref", 0, NULL, '1'},
|
|
{ NULL, 0, NULL, 0 }
|
|
};
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
int c;
|
|
int err;
|
|
char *pattern_source;
|
|
|
|
page_size = getpagesize();
|
|
if (chdir("/sys/slab"))
|
|
fatal("This kernel does not have SLUB support.\n");
|
|
|
|
while ((c = getopt_long(argc, argv, "afhil1npstvzTS", opts, NULL)) != -1)
|
|
switch(c) {
|
|
case '1':
|
|
show_single_ref = 1;
|
|
break;
|
|
case 'a':
|
|
show_alias = 1;
|
|
break;
|
|
case 'f':
|
|
show_first_alias = 1;
|
|
break;
|
|
case 'h':
|
|
usage();
|
|
return 0;
|
|
case 'i':
|
|
show_inverted = 1;
|
|
break;
|
|
case 'n':
|
|
show_numa = 1;
|
|
break;
|
|
case 's':
|
|
shrink = 1;
|
|
break;
|
|
case 'l':
|
|
show_slab = 1;
|
|
break;
|
|
case 't':
|
|
show_track = 1;
|
|
break;
|
|
case 'v':
|
|
validate = 1;
|
|
break;
|
|
case 'z':
|
|
skip_zero = 0;
|
|
break;
|
|
case 'T':
|
|
show_totals = 1;
|
|
break;
|
|
case 'S':
|
|
sort_size = 1;
|
|
break;
|
|
|
|
default:
|
|
fatal("%s: Invalid option '%c'\n", argv[0], optopt);
|
|
|
|
}
|
|
|
|
if (!show_slab && !show_alias && !show_track
|
|
&& !validate && !shrink)
|
|
show_slab = 1;
|
|
|
|
if (argc > optind)
|
|
pattern_source = argv[optind];
|
|
else
|
|
pattern_source = ".*";
|
|
|
|
err = regcomp(&pattern, pattern_source, REG_ICASE|REG_NOSUB);
|
|
if (err)
|
|
fatal("%s: Invalid pattern '%s' code %d\n",
|
|
argv[0], pattern_source, err);
|
|
read_slab_dir();
|
|
if (show_alias)
|
|
alias();
|
|
else
|
|
if (show_totals)
|
|
totals();
|
|
else {
|
|
link_slabs();
|
|
rename_slabs();
|
|
sort_slabs();
|
|
output_slabs();
|
|
}
|
|
return 0;
|
|
}
|