| // SPDX-License-Identifier: GPL-2.0 |
| /* |
| * Slabinfo: Tool to get reports about slabs |
| * |
| * (C) 2007 sgi, Christoph Lameter |
| * (C) 2011 Linux Foundation, Christoph Lameter |
| * |
| * Compile with: |
| * |
| * gcc -o slabinfo slabinfo.c |
| */ |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <sys/types.h> |
| #include <dirent.h> |
| #include <strings.h> |
| #include <string.h> |
| #include <unistd.h> |
| #include <stdarg.h> |
| #include <getopt.h> |
| #include <regex.h> |
| #include <errno.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; |
| unsigned int hwcache_align, object_size, objs_per_slab; |
| unsigned int sanity_checks, slab_size, store_user, trace; |
| int order, poison, reclaim_account, red_zone; |
| unsigned long partial, objects, slabs, objects_partial, objects_total; |
| unsigned long alloc_fastpath, alloc_slowpath; |
| unsigned long free_fastpath, free_slowpath; |
| unsigned long free_frozen, free_add_partial, free_remove_partial; |
| unsigned long alloc_from_partial, alloc_slab, free_slab, alloc_refill; |
| unsigned long cpuslab_flush, deactivate_full, deactivate_empty; |
| unsigned long deactivate_to_head, deactivate_to_tail; |
| unsigned long deactivate_remote_frees, order_fallback; |
| unsigned long cmpxchg_double_cpu_fail, cmpxchg_double_fail; |
| unsigned long alloc_node_mismatch, deactivate_bypass; |
| unsigned long cpu_partial_alloc, cpu_partial_free; |
| 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; |
| int actual_slabs; |
| int aliases; |
| int alias_targets; |
| int highest_node; |
| |
| char buffer[4096]; |
| |
| int show_empty; |
| int show_report; |
| int show_alias; |
| int show_slab; |
| int skip_zero = 1; |
| int show_numa; |
| int show_track; |
| int show_first_alias; |
| int validate; |
| int shrink; |
| int show_inverted; |
| int show_single_ref; |
| int show_totals; |
| int sort_size; |
| int sort_active; |
| int set_debug; |
| int show_ops; |
| int sort_partial; |
| int show_activity; |
| int output_lines = -1; |
| int sort_loss; |
| int extended_totals; |
| int show_bytes; |
| int unreclaim_only; |
| |
| /* Debug options */ |
| int sanity; |
| int redzone; |
| int poison; |
| int tracking; |
| int tracing; |
| |
| int page_size; |
| |
| regex_t pattern; |
| |
| static void fatal(const char *x, ...) |
| { |
| va_list ap; |
| |
| va_start(ap, x); |
| vfprintf(stderr, x, ap); |
| va_end(ap); |
| exit(EXIT_FAILURE); |
| } |
| |
| static void usage(void) |
| { |
| printf("slabinfo 4/15/2011. (c) 2007 sgi/(c) 2011 Linux Foundation.\n\n" |
| "slabinfo [-aABDefhilLnoPrsStTUvXz1] [N=K] [-dafzput] [slab-regexp]\n" |
| "-a|--aliases Show aliases\n" |
| "-A|--activity Most active slabs first\n" |
| "-B|--Bytes Show size in bytes\n" |
| "-D|--display-active Switch line format to activity\n" |
| "-e|--empty Show empty slabs\n" |
| "-f|--first-alias Show first alias\n" |
| "-h|--help Show usage information\n" |
| "-i|--inverted Inverted list\n" |
| "-l|--slabs Show slabs\n" |
| "-L|--Loss Sort by loss\n" |
| "-n|--numa Show NUMA information\n" |
| "-N|--lines=K Show the first K slabs\n" |
| "-o|--ops Show kmem_cache_ops\n" |
| "-P|--partial Sort by number of partial slabs\n" |
| "-r|--report Detailed report on single slabs\n" |
| "-s|--shrink Shrink slabs\n" |
| "-S|--Size Sort by size\n" |
| "-t|--tracking Show alloc/free information\n" |
| "-T|--Totals Show summary information\n" |
| "-U|--Unreclaim Show unreclaimable slabs only\n" |
| "-v|--validate Validate slabs\n" |
| "-X|--Xtotals Show extended summary information\n" |
| "-z|--zero Include empty slabs\n" |
| "-1|--1ref Single reference\n" |
| |
| "\n" |
| "-d | --debug Switch off all debug options\n" |
| "-da | --debug=a Switch on all debug options (--debug=FZPU)\n" |
| |
| "\n" |
| "-d[afzput] | --debug=[afzput]\n" |
| " f | F Sanity Checks (SLAB_CONSISTENCY_CHECKS)\n" |
| " z | Z Redzoning\n" |
| " p | P Poisoning\n" |
| " u | U Tracking\n" |
| " t | T Tracing\n" |
| |
| "\nSorting options (--Loss, --Size, --Partial) are mutually exclusive\n" |
| ); |
| } |
| |
| static unsigned long read_obj(const 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 |
| */ |
| static unsigned long get_obj(const char *name) |
| { |
| if (!read_obj(name)) |
| return 0; |
| |
| return atol(buffer); |
| } |
| |
| static unsigned long get_obj_and_str(const 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; |
| } |
| |
| static void set_obj(struct slabinfo *s, const char *name, int n) |
| { |
| char x[100]; |
| FILE *f; |
| |
| snprintf(x, 100, "%s/%s", s->name, name); |
| f = fopen(x, "w"); |
| if (!f) |
| fatal("Cannot write to %s\n", x); |
| |
| fprintf(f, "%d\n", n); |
| fclose(f); |
| } |
| |
| static unsigned long read_slab_obj(struct slabinfo *s, const char *name) |
| { |
| char x[100]; |
| FILE *f; |
| size_t l; |
| |
| snprintf(x, 100, "%s/%s", s->name, name); |
| f = fopen(x, "r"); |
| if (!f) { |
| buffer[0] = 0; |
| l = 0; |
| } else { |
| l = fread(buffer, 1, sizeof(buffer), f); |
| buffer[l] = 0; |
| fclose(f); |
| } |
| return l; |
| } |
| |
| static unsigned long read_debug_slab_obj(struct slabinfo *s, const char *name) |
| { |
| char x[128]; |
| FILE *f; |
| size_t l; |
| |
| snprintf(x, 128, "/sys/kernel/debug/slab/%s/%s", s->name, name); |
| f = fopen(x, "r"); |
| if (!f) { |
| buffer[0] = 0; |
| l = 0; |
| } else { |
| l = fread(buffer, 1, sizeof(buffer), f); |
| buffer[l] = 0; |
| fclose(f); |
| } |
| return l; |
| } |
| |
| /* |
| * Put a size string together |
| */ |
| static int store_size(char *buffer, unsigned long value) |
| { |
| unsigned long divisor = 1; |
| char trailer = 0; |
| int n; |
| |
| if (!show_bytes) { |
| 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; |
| } |
| |
| static void decode_numa_list(int *numa, char *t) |
| { |
| int node; |
| int nr; |
| |
| memset(numa, 0, MAX_NODES * sizeof(int)); |
| |
| if (!t) |
| return; |
| |
| 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++; |
| } |
| } |
| |
| static void slab_validate(struct slabinfo *s) |
| { |
| if (strcmp(s->name, "*") == 0) |
| return; |
| |
| set_obj(s, "validate", 1); |
| } |
| |
| static void slab_shrink(struct slabinfo *s) |
| { |
| if (strcmp(s->name, "*") == 0) |
| return; |
| |
| set_obj(s, "shrink", 1); |
| } |
| |
| int line = 0; |
| |
| static void first_line(void) |
| { |
| if (show_activity) |
| printf("Name Objects Alloc Free" |
| " %%Fast Fallb O CmpX UL\n"); |
| else |
| printf("Name Objects Objsize %s " |
| "Slabs/Part/Cpu O/S O %%Fr %%Ef Flg\n", |
| sort_loss ? " Loss" : "Space"); |
| } |
| |
| /* |
| * Find the shortest alias of a slab |
| */ |
| static 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; |
| } |
| } |
| return best; |
| } |
| |
| static unsigned long slab_size(struct slabinfo *s) |
| { |
| return s->slabs * (page_size << s->order); |
| } |
| |
| static unsigned long slab_activity(struct slabinfo *s) |
| { |
| return s->alloc_fastpath + s->free_fastpath + |
| s->alloc_slowpath + s->free_slowpath; |
| } |
| |
| static unsigned long slab_waste(struct slabinfo *s) |
| { |
| return slab_size(s) - s->objects * s->object_size; |
| } |
| |
| static void slab_numa(struct slabinfo *s, int mode) |
| { |
| int node; |
| |
| if (strcmp(s->name, "*") == 0) |
| return; |
| |
| if (!highest_node) { |
| printf("\n%s: No NUMA information available.\n", s->name); |
| return; |
| } |
| |
| if (skip_zero && !s->slabs) |
| return; |
| |
| if (!line) { |
| printf("\n%-21s:", mode ? "NUMA nodes" : "Slab"); |
| for(node = 0; node <= highest_node; node++) |
| printf(" %4d", node); |
| printf("\n----------------------"); |
| for(node = 0; node <= highest_node; node++) |
| printf("-----"); |
| printf("\n"); |
| } |
| printf("%-21s ", mode ? "All slabs" : s->name); |
| for(node = 0; node <= highest_node; node++) { |
| char b[20]; |
| |
| store_size(b, s->numa[node]); |
| printf(" %4s", b); |
| } |
| printf("\n"); |
| if (mode) { |
| printf("%-21s ", "Partial slabs"); |
| for(node = 0; node <= highest_node; node++) { |
| char b[20]; |
| |
| store_size(b, s->numa_partial[node]); |
| printf(" %4s", b); |
| } |
| printf("\n"); |
| } |
| line++; |
| } |
| |
| static void show_tracking(struct slabinfo *s) |
| { |
| printf("\n%s: Kernel object allocation\n", s->name); |
| printf("-----------------------------------------------------------------------\n"); |
| if (read_debug_slab_obj(s, "alloc_traces")) |
| printf("%s", buffer); |
| else if (read_slab_obj(s, "alloc_calls")) |
| printf("%s", buffer); |
| else |
| printf("No Data\n"); |
| |
| printf("\n%s: Kernel object freeing\n", s->name); |
| printf("------------------------------------------------------------------------\n"); |
| if (read_debug_slab_obj(s, "free_traces")) |
| printf("%s", buffer); |
| else if (read_slab_obj(s, "free_calls")) |
| printf("%s", buffer); |
| else |
| printf("No Data\n"); |
| |
| } |
| |
| static void ops(struct slabinfo *s) |
| { |
| if (strcmp(s->name, "*") == 0) |
| return; |
| |
| if (read_slab_obj(s, "ops")) { |
| printf("\n%s: kmem_cache operations\n", s->name); |
| printf("--------------------------------------------\n"); |
| printf("%s", buffer); |
| } else |
| printf("\n%s has no kmem_cache operations\n", s->name); |
| } |
| |
| static const char *onoff(int x) |
| { |
| if (x) |
| return "On "; |
| return "Off"; |
| } |
| |
| static void slab_stats(struct slabinfo *s) |
| { |
| unsigned long total_alloc; |
| unsigned long total_free; |
| unsigned long total; |
| |
| if (!s->alloc_slab) |
| return; |
| |
| total_alloc = s->alloc_fastpath + s->alloc_slowpath; |
| total_free = s->free_fastpath + s->free_slowpath; |
| |
| if (!total_alloc) |
| return; |
| |
| printf("\n"); |
| printf("Slab Perf Counter Alloc Free %%Al %%Fr\n"); |
| printf("--------------------------------------------------\n"); |
| printf("Fastpath %8lu %8lu %3lu %3lu\n", |
| s->alloc_fastpath, s->free_fastpath, |
| s->alloc_fastpath * 100 / total_alloc, |
| total_free ? s->free_fastpath * 100 / total_free : 0); |
| printf("Slowpath %8lu %8lu %3lu %3lu\n", |
| total_alloc - s->alloc_fastpath, s->free_slowpath, |
| (total_alloc - s->alloc_fastpath) * 100 / total_alloc, |
| total_free ? s->free_slowpath * 100 / total_free : 0); |
| printf("Page Alloc %8lu %8lu %3lu %3lu\n", |
| s->alloc_slab, s->free_slab, |
| s->alloc_slab * 100 / total_alloc, |
| total_free ? s->free_slab * 100 / total_free : 0); |
| printf("Add partial %8lu %8lu %3lu %3lu\n", |
| s->deactivate_to_head + s->deactivate_to_tail, |
| s->free_add_partial, |
| (s->deactivate_to_head + s->deactivate_to_tail) * 100 / total_alloc, |
| total_free ? s->free_add_partial * 100 / total_free : 0); |
| printf("Remove partial %8lu %8lu %3lu %3lu\n", |
| s->alloc_from_partial, s->free_remove_partial, |
| s->alloc_from_partial * 100 / total_alloc, |
| total_free ? s->free_remove_partial * 100 / total_free : 0); |
| |
| printf("Cpu partial list %8lu %8lu %3lu %3lu\n", |
| s->cpu_partial_alloc, s->cpu_partial_free, |
| s->cpu_partial_alloc * 100 / total_alloc, |
| total_free ? s->cpu_partial_free * 100 / total_free : 0); |
| |
| printf("RemoteObj/SlabFrozen %8lu %8lu %3lu %3lu\n", |
| s->deactivate_remote_frees, s->free_frozen, |
| s->deactivate_remote_frees * 100 / total_alloc, |
| total_free ? s->free_frozen * 100 / total_free : 0); |
| |
| printf("Total %8lu %8lu\n\n", total_alloc, total_free); |
| |
| if (s->cpuslab_flush) |
| printf("Flushes %8lu\n", s->cpuslab_flush); |
| |
| total = s->deactivate_full + s->deactivate_empty + |
| s->deactivate_to_head + s->deactivate_to_tail + s->deactivate_bypass; |
| |
| if (total) { |
| printf("\nSlab Deactivation Occurrences %%\n"); |
| printf("-------------------------------------------------\n"); |
| printf("Slab full %7lu %3lu%%\n", |
| s->deactivate_full, (s->deactivate_full * 100) / total); |
| printf("Slab empty %7lu %3lu%%\n", |
| s->deactivate_empty, (s->deactivate_empty * 100) / total); |
| printf("Moved to head of partial list %7lu %3lu%%\n", |
| s->deactivate_to_head, (s->deactivate_to_head * 100) / total); |
| printf("Moved to tail of partial list %7lu %3lu%%\n", |
| s->deactivate_to_tail, (s->deactivate_to_tail * 100) / total); |
| printf("Deactivation bypass %7lu %3lu%%\n", |
| s->deactivate_bypass, (s->deactivate_bypass * 100) / total); |
| printf("Refilled from foreign frees %7lu %3lu%%\n", |
| s->alloc_refill, (s->alloc_refill * 100) / total); |
| printf("Node mismatch %7lu %3lu%%\n", |
| s->alloc_node_mismatch, (s->alloc_node_mismatch * 100) / total); |
| } |
| |
| if (s->cmpxchg_double_fail || s->cmpxchg_double_cpu_fail) { |
| printf("\nCmpxchg_double Looping\n------------------------\n"); |
| printf("Locked Cmpxchg Double redos %lu\nUnlocked Cmpxchg Double redos %lu\n", |
| s->cmpxchg_double_fail, s->cmpxchg_double_cpu_fail); |
| } |
| } |
| |
| static void report(struct slabinfo *s) |
| { |
| if (strcmp(s->name, "*") == 0) |
| return; |
| |
| printf("\nSlabcache: %-15s Aliases: %2d Order : %2d Objects: %lu\n", |
| s->name, s->aliases, s->order, s->objects); |
| if (s->hwcache_align) |
| printf("** Hardware cacheline aligned\n"); |
| if (s->cache_dma) |
| printf("** Memory is allocated in a special DMA zone\n"); |
| if (s->destroy_by_rcu) |
| printf("** Slabs are destroyed via RCU\n"); |
| if (s->reclaim_account) |
| printf("** Reclaim accounting active\n"); |
| |
| printf("\nSizes (bytes) Slabs Debug Memory\n"); |
| printf("------------------------------------------------------------------------\n"); |
| printf("Object : %7d Total : %7ld Sanity Checks : %s Total: %7ld\n", |
| s->object_size, s->slabs, onoff(s->sanity_checks), |
| s->slabs * (page_size << s->order)); |
| printf("SlabObj: %7d Full : %7ld Redzoning : %s Used : %7ld\n", |
| s->slab_size, s->slabs - s->partial - s->cpu_slabs, |
| onoff(s->red_zone), s->objects * s->object_size); |
| printf("SlabSiz: %7d Partial: %7ld Poisoning : %s Loss : %7ld\n", |
| page_size << s->order, s->partial, onoff(s->poison), |
| s->slabs * (page_size << s->order) - s->objects * s->object_size); |
| printf("Loss : %7d CpuSlab: %7d Tracking : %s Lalig: %7ld\n", |
| s->slab_size - s->object_size, s->cpu_slabs, onoff(s->store_user), |
| (s->slab_size - s->object_size) * s->objects); |
| printf("Align : %7d Objects: %7d Tracing : %s Lpadd: %7ld\n", |
| s->align, s->objs_per_slab, onoff(s->trace), |
| ((page_size << s->order) - s->objs_per_slab * s->slab_size) * |
| s->slabs); |
| |
| ops(s); |
| show_tracking(s); |
| slab_numa(s, 1); |
| slab_stats(s); |
| } |
| |
| static void slabcache(struct slabinfo *s) |
| { |
| char size_str[20]; |
| char dist_str[40]; |
| char flags[20]; |
| char *p = flags; |
| |
| if (strcmp(s->name, "*") == 0) |
| return; |
| |
| if (unreclaim_only && s->reclaim_account) |
| return; |
| |
| if (actual_slabs == 1) { |
| report(s); |
| return; |
| } |
| |
| if (skip_zero && !show_empty && !s->slabs) |
| return; |
| |
| if (show_empty && s->slabs) |
| return; |
| |
| if (sort_loss == 0) |
| store_size(size_str, slab_size(s)); |
| else |
| store_size(size_str, slab_waste(s)); |
| snprintf(dist_str, 40, "%lu/%lu/%d", s->slabs - s->cpu_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; |
| if (show_activity) { |
| unsigned long total_alloc; |
| unsigned long total_free; |
| |
| total_alloc = s->alloc_fastpath + s->alloc_slowpath; |
| total_free = s->free_fastpath + s->free_slowpath; |
| |
| printf("%-21s %8ld %10ld %10ld %3ld %3ld %5ld %1d %4ld %4ld\n", |
| s->name, s->objects, |
| total_alloc, total_free, |
| total_alloc ? (s->alloc_fastpath * 100 / total_alloc) : 0, |
| total_free ? (s->free_fastpath * 100 / total_free) : 0, |
| s->order_fallback, s->order, s->cmpxchg_double_fail, |
| s->cmpxchg_double_cpu_fail); |
| } else { |
| printf("%-21s %8ld %7d %15s %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); |
| } |
| } |
| |
| /* |
| * Analyze debug options. Return false if something is amiss. |
| */ |
| static int debug_opt_scan(char *opt) |
| { |
| if (!opt || !opt[0] || strcmp(opt, "-") == 0) |
| return 1; |
| |
| if (strcasecmp(opt, "a") == 0) { |
| sanity = 1; |
| poison = 1; |
| redzone = 1; |
| tracking = 1; |
| return 1; |
| } |
| |
| for ( ; *opt; opt++) |
| switch (*opt) { |
| case 'F' : case 'f': |
| if (sanity) |
| return 0; |
| sanity = 1; |
| break; |
| case 'P' : case 'p': |
| if (poison) |
| return 0; |
| poison = 1; |
| break; |
| |
| case 'Z' : case 'z': |
| if (redzone) |
| return 0; |
| redzone = 1; |
| break; |
| |
| case 'U' : case 'u': |
| if (tracking) |
| return 0; |
| tracking = 1; |
| break; |
| |
| case 'T' : case 't': |
| if (tracing) |
| return 0; |
| tracing = 1; |
| break; |
| default: |
| return 0; |
| } |
| return 1; |
| } |
| |
| static int slab_empty(struct slabinfo *s) |
| { |
| if (s->objects > 0) |
| return 0; |
| |
| /* |
| * We may still have slabs even if there are no objects. Shrinking will |
| * remove them. |
| */ |
| if (s->slabs != 0) |
| set_obj(s, "shrink", 1); |
| |
| return 1; |
| } |
| |
| static void slab_debug(struct slabinfo *s) |
| { |
| if (strcmp(s->name, "*") == 0) |
| return; |
| |
| if (sanity && !s->sanity_checks) { |
| set_obj(s, "sanity_checks", 1); |
| } |
| if (!sanity && s->sanity_checks) { |
| if (slab_empty(s)) |
| set_obj(s, "sanity_checks", 0); |
| else |
| fprintf(stderr, "%s not empty cannot disable sanity checks\n", s->name); |
| } |
| if (redzone && !s->red_zone) { |
| if (slab_empty(s)) |
| set_obj(s, "red_zone", 1); |
| else |
| fprintf(stderr, "%s not empty cannot enable redzoning\n", s->name); |
| } |
| if (!redzone && s->red_zone) { |
| if (slab_empty(s)) |
| set_obj(s, "red_zone", 0); |
| else |
| fprintf(stderr, "%s not empty cannot disable redzoning\n", s->name); |
| } |
| if (poison && !s->poison) { |
| if (slab_empty(s)) |
| set_obj(s, "poison", 1); |
| else |
| fprintf(stderr, "%s not empty cannot enable poisoning\n", s->name); |
| } |
| if (!poison && s->poison) { |
| if (slab_empty(s)) |
| set_obj(s, "poison", 0); |
| else |
| fprintf(stderr, "%s not empty cannot disable poisoning\n", s->name); |
| } |
| if (tracking && !s->store_user) { |
| if (slab_empty(s)) |
| set_obj(s, "store_user", 1); |
| else |
| fprintf(stderr, "%s not empty cannot enable tracking\n", s->name); |
| } |
| if (!tracking && s->store_user) { |
| if (slab_empty(s)) |
| set_obj(s, "store_user", 0); |
| else |
| fprintf(stderr, "%s not empty cannot disable tracking\n", s->name); |
| } |
| if (tracing && !s->trace) { |
| if (slabs == 1) |
| set_obj(s, "trace", 1); |
| else |
| fprintf(stderr, "%s can only enable trace for one slab at a time\n", s->name); |
| } |
| if (!tracing && s->trace) |
| set_obj(s, "trace", 1); |
| } |
| |
| static 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; |
| 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; |
| |
| percentage_partial_slabs = s->partial * 100 / s->slabs; |
| if (percentage_partial_slabs > 100) |
| percentage_partial_slabs = 100; |
| |
| percentage_partial_objs = s->objects_partial * 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 (s->objects_partial < min_partobj) |
| min_partobj = s->objects_partial; |
| 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 (s->objects_partial > max_partobj) |
| max_partobj = s->objects_partial; |
| 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 += s->objects_partial; |
| 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 : %15d Aliases : %11d->%-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: %15s # Loss : %15s 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 : %15s # PartObj: %15s 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 %15s %15s %15s %15s\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 %15s %15s %15s %15s\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 %15s %15s %15s %15s\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%15s%% %15s%% %15s%% %15s%%\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 %15s %15s %15s %15s\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%15s%% %15s%% %15s%% %15s%%\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 %15s %15s %15s %15s\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 %15s %15s %15s %15s\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 %15s %15s %15s %15s\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 %15s %15s %15s\n", |
| b1, b2, b3); |
| store_size(b1, avg_objsize);store_size(b2, min_objsize); |
| store_size(b3, max_objsize); |
| printf("User %15s %15s %15s\n", |
| b1, b2, b3); |
| |
| store_size(b1, avg_objwaste);store_size(b2, min_objwaste); |
| store_size(b3, max_objwaste); |
| printf("Loss %15s %15s %15s\n", |
| b1, b2, b3); |
| } |
| |
| static 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) { |
| if (slab_size(s1) == slab_size(s2)) |
| result = strcasecmp(s1->name, s2->name); |
| else |
| result = slab_size(s1) < slab_size(s2); |
| } else if (sort_active) { |
| if (slab_activity(s1) == slab_activity(s2)) |
| result = strcasecmp(s1->name, s2->name); |
| else |
| result = slab_activity(s1) < slab_activity(s2); |
| } else if (sort_loss) { |
| if (slab_waste(s1) == slab_waste(s2)) |
| result = strcasecmp(s1->name, s2->name); |
| else |
| result = slab_waste(s1) < slab_waste(s2); |
| } else if (sort_partial) { |
| if (s1->partial == s2->partial) |
| result = strcasecmp(s1->name, s2->name); |
| else |
| result = s1->partial < s2->partial; |
| } 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)); |
| } |
| } |
| } |
| } |
| |
| static 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)); |
| } |
| } |
| } |
| } |
| |
| static 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); |
| } |
| } |
| |
| static 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%-12s <- %s", a->slab->name, a->name); |
| active = a->slab->name; |
| } |
| else |
| printf("%-15s -> %s\n", a->name, a->slab->name); |
| } |
| if (active) |
| printf("\n"); |
| } |
| |
| |
| static 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); |
| |
| if (a) |
| s->name = a->name; |
| else { |
| s->name = "*"; |
| actual_slabs--; |
| } |
| } |
| } |
| |
| static int slab_mismatch(char *slab) |
| { |
| return regexec(&pattern, slab, 0, NULL, 0); |
| } |
| |
| static void read_slab_dir(void) |
| { |
| DIR *dir; |
| struct dirent *de; |
| struct slabinfo *slab = slabinfo; |
| struct aliasinfo *alias = aliasinfo; |
| char *p; |
| char *t; |
| int count; |
| |
| if (chdir("/sys/kernel/slab") && chdir("/sys/slab")) |
| fatal("SYSFS support for SLUB not active\n"); |
| |
| dir = opendir("."); |
| while ((de = readdir(dir))) { |
| if (de->d_name[0] == '.' || |
| (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)-1); |
| |
| 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->objects_partial = get_obj("objects_partial"); |
| slab->objects_total = get_obj("objects_total"); |
| 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); |
| free(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); |
| free(t); |
| slab->store_user = get_obj("store_user"); |
| slab->trace = get_obj("trace"); |
| slab->alloc_fastpath = get_obj("alloc_fastpath"); |
| slab->alloc_slowpath = get_obj("alloc_slowpath"); |
| slab->free_fastpath = get_obj("free_fastpath"); |
| slab->free_slowpath = get_obj("free_slowpath"); |
| slab->free_frozen= get_obj("free_frozen"); |
| slab->free_add_partial = get_obj("free_add_partial"); |
| slab->free_remove_partial = get_obj("free_remove_partial"); |
| slab->alloc_from_partial = get_obj("alloc_from_partial"); |
| slab->alloc_slab = get_obj("alloc_slab"); |
| slab->alloc_refill = get_obj("alloc_refill"); |
| slab->free_slab = get_obj("free_slab"); |
| slab->cpuslab_flush = get_obj("cpuslab_flush"); |
| slab->deactivate_full = get_obj("deactivate_full"); |
| slab->deactivate_empty = get_obj("deactivate_empty"); |
| slab->deactivate_to_head = get_obj("deactivate_to_head"); |
| slab->deactivate_to_tail = get_obj("deactivate_to_tail"); |
| slab->deactivate_remote_frees = get_obj("deactivate_remote_frees"); |
| slab->order_fallback = get_obj("order_fallback"); |
| slab->cmpxchg_double_cpu_fail = get_obj("cmpxchg_double_cpu_fail"); |
| slab->cmpxchg_double_fail = get_obj("cmpxchg_double_fail"); |
| slab->cpu_partial_alloc = get_obj("cpu_partial_alloc"); |
| slab->cpu_partial_free = get_obj("cpu_partial_free"); |
| slab->alloc_node_mismatch = get_obj("alloc_node_mismatch"); |
| slab->deactivate_bypass = get_obj("deactivate_bypass"); |
| chdir(".."); |
| if (slab->name[0] == ':') |
| alias_targets++; |
| slab++; |
| break; |
| default : |
| fatal("Unknown file type %lx\n", de->d_type); |
| } |
| } |
| closedir(dir); |
| slabs = slab - slabinfo; |
| actual_slabs = slabs; |
| aliases = alias - aliasinfo; |
| if (slabs > MAX_SLABS) |
| fatal("Too many slabs\n"); |
| if (aliases > MAX_ALIASES) |
| fatal("Too many aliases\n"); |
| } |
| |
| static void output_slabs(void) |
| { |
| struct slabinfo *slab; |
| int lines = output_lines; |
| |
| for (slab = slabinfo; (slab < slabinfo + slabs) && |
| lines != 0; slab++) { |
| |
| if (slab->alias) |
| continue; |
| |
| if (lines != -1) |
| lines--; |
| |
| if (show_numa) |
| slab_numa(slab, 0); |
| else if (show_track) |
| show_tracking(slab); |
| else if (validate) |
| slab_validate(slab); |
| else if (shrink) |
| slab_shrink(slab); |
| else if (set_debug) |
| slab_debug(slab); |
| else if (show_ops) |
| ops(slab); |
| else if (show_slab) |
| slabcache(slab); |
| else if (show_report) |
| report(slab); |
| } |
| } |
| |
| static void _xtotals(char *heading, char *underline, |
| int loss, int size, int partial) |
| { |
| printf("%s%s", heading, underline); |
| line = 0; |
| sort_loss = loss; |
| sort_size = size; |
| sort_partial = partial; |
| sort_slabs(); |
| output_slabs(); |
| } |
| |
| static void xtotals(void) |
| { |
| char *heading, *underline; |
| |
| totals(); |
| |
| link_slabs(); |
| rename_slabs(); |
| |
| heading = "\nSlabs sorted by size\n"; |
| underline = "--------------------\n"; |
| _xtotals(heading, underline, 0, 1, 0); |
| |
| heading = "\nSlabs sorted by loss\n"; |
| underline = "--------------------\n"; |
| _xtotals(heading, underline, 1, 0, 0); |
| |
| heading = "\nSlabs sorted by number of partial slabs\n"; |
| underline = "---------------------------------------\n"; |
| _xtotals(heading, underline, 0, 0, 1); |
| |
| printf("\n"); |
| } |
| |
| struct option opts[] = { |
| { "aliases", no_argument, NULL, 'a' }, |
| { "activity", no_argument, NULL, 'A' }, |
| { "Bytes", no_argument, NULL, 'B'}, |
| { "debug", optional_argument, NULL, 'd' }, |
| { "display-activity", no_argument, NULL, 'D' }, |
| { "empty", no_argument, NULL, 'e' }, |
| { "first-alias", no_argument, NULL, 'f' }, |
| { "help", no_argument, NULL, 'h' }, |
| { "inverted", no_argument, NULL, 'i'}, |
| { "slabs", no_argument, NULL, 'l' }, |
| { "Loss", no_argument, NULL, 'L'}, |
| { "numa", no_argument, NULL, 'n' }, |
| { "lines", required_argument, NULL, 'N'}, |
| { "ops", no_argument, NULL, 'o' }, |
| { "partial", no_argument, NULL, 'p'}, |
| { "report", no_argument, NULL, 'r' }, |
| { "shrink", no_argument, NULL, 's' }, |
| { "Size", no_argument, NULL, 'S'}, |
| { "tracking", no_argument, NULL, 't'}, |
| { "Totals", no_argument, NULL, 'T'}, |
| { "Unreclaim", no_argument, NULL, 'U'}, |
| { "validate", no_argument, NULL, 'v' }, |
| { "Xtotals", no_argument, NULL, 'X'}, |
| { "zero", no_argument, NULL, 'z' }, |
| { "1ref", no_argument, NULL, '1'}, |
| { NULL, 0, NULL, 0 } |
| }; |
| |
| int main(int argc, char *argv[]) |
| { |
| int c; |
| int err; |
| char *pattern_source; |
| |
| page_size = getpagesize(); |
| |
| while ((c = getopt_long(argc, argv, "aABd::DefhilLnN:oPrsStTUvXz1", |
| opts, NULL)) != -1) |
| switch (c) { |
| case 'a': |
| show_alias = 1; |
| break; |
| case 'A': |
| sort_active = 1; |
| break; |
| case 'B': |
| show_bytes = 1; |
| break; |
| case 'd': |
| set_debug = 1; |
| if (!debug_opt_scan(optarg)) |
| fatal("Invalid debug option '%s'\n", optarg); |
| break; |
| case 'D': |
| show_activity = 1; |
| break; |
| case 'e': |
| show_empty = 1; |
| break; |
| case 'f': |
| show_first_alias = 1; |
| break; |
| case 'h': |
| usage(); |
| return 0; |
| case 'i': |
| show_inverted = 1; |
| break; |
| case 'l': |
| show_slab = 1; |
| break; |
| case 'L': |
| sort_loss = 1; |
| break; |
| case 'n': |
| show_numa = 1; |
| break; |
| case 'N': |
| if (optarg) { |
| output_lines = atoi(optarg); |
| if (output_lines < 1) |
| output_lines = 1; |
| } |
| break; |
| case 'o': |
| show_ops = 1; |
| break; |
| case 'r': |
| show_report = 1; |
| break; |
| case 'P': |
| sort_partial = 1; |
| break; |
| case 's': |
| shrink = 1; |
| break; |
| case 'S': |
| sort_size = 1; |
| break; |
| case 't': |
| show_track = 1; |
| break; |
| case 'T': |
| show_totals = 1; |
| break; |
| case 'U': |
| unreclaim_only = 1; |
| break; |
| case 'v': |
| validate = 1; |
| break; |
| case 'X': |
| if (output_lines == -1) |
| output_lines = 1; |
| extended_totals = 1; |
| show_bytes = 1; |
| break; |
| case 'z': |
| skip_zero = 0; |
| break; |
| case '1': |
| show_single_ref = 1; |
| break; |
| default: |
| fatal("%s: Invalid option '%c'\n", argv[0], optopt); |
| |
| } |
| |
| if (!show_slab && !show_alias && !show_track && !show_report |
| && !validate && !shrink && !set_debug && !show_ops) |
| 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 (extended_totals) { |
| xtotals(); |
| } else if (show_totals) { |
| totals(); |
| } else { |
| link_slabs(); |
| rename_slabs(); |
| sort_slabs(); |
| output_slabs(); |
| } |
| return 0; |
| } |