diff options
Diffstat (limited to 'Documentation/vm')
| -rw-r--r-- | Documentation/vm/00-INDEX | 20 | ||||
| -rw-r--r-- | Documentation/vm/slabinfo.c | 27 |
2 files changed, 35 insertions, 12 deletions
diff --git a/Documentation/vm/00-INDEX b/Documentation/vm/00-INDEX new file mode 100644 index 000000000000..2131b00b63f6 --- /dev/null +++ b/Documentation/vm/00-INDEX @@ -0,0 +1,20 @@ +00-INDEX + - this file. +balance + - various information on memory balancing. +hugetlbpage.txt + - a brief summary of hugetlbpage support in the Linux kernel. +locking + - info on how locking and synchronization is done in the Linux vm code. +numa + - information about NUMA specific code in the Linux vm. +numa_memory_policy.txt + - documentation of concepts and APIs of the 2.6 memory policy support. +overcommit-accounting + - description of the Linux kernels overcommit handling modes. +page_migration + - description of page migration in NUMA systems. +slabinfo.c + - source code for a tool to get reports about slabs. +slub.txt + - a short users guide for SLUB. diff --git a/Documentation/vm/slabinfo.c b/Documentation/vm/slabinfo.c index 1af7bd5a2183..7047696c47a1 100644 --- a/Documentation/vm/slabinfo.c +++ b/Documentation/vm/slabinfo.c @@ -11,6 +11,7 @@ #include <stdlib.h> #include <sys/types.h> #include <dirent.h> +#include <strings.h> #include <string.h> #include <unistd.h> #include <stdarg.h> @@ -84,7 +85,7 @@ void fatal(const char *x, ...) va_start(ap, x); vfprintf(stderr, x, ap); va_end(ap); - exit(1); + exit(EXIT_FAILURE); } void usage(void) @@ -119,14 +120,14 @@ void usage(void) ); } -unsigned long read_obj(char *name) +unsigned long read_obj(const char *name) { FILE *f = fopen(name, "r"); if (!f) buffer[0] = 0; else { - if (!fgets(buffer,sizeof(buffer), f)) + if (!fgets(buffer, sizeof(buffer), f)) buffer[0] = 0; fclose(f); if (buffer[strlen(buffer)] == '\n') @@ -139,7 +140,7 @@ unsigned long read_obj(char *name) /* * Get the contents of an attribute */ -unsigned long get_obj(char *name) +unsigned long get_obj(const char *name) { if (!read_obj(name)) return 0; @@ -147,7 +148,7 @@ unsigned long get_obj(char *name) return atol(buffer); } -unsigned long get_obj_and_str(char *name, char **x) +unsigned long get_obj_and_str(const char *name, char **x) { unsigned long result = 0; char *p; @@ -166,12 +167,12 @@ unsigned long get_obj_and_str(char *name, char **x) return result; } -void set_obj(struct slabinfo *s, char *name, int n) +void set_obj(struct slabinfo *s, const char *name, int n) { char x[100]; FILE *f; - sprintf(x, "%s/%s", s->name, name); + snprintf(x, 100, "%s/%s", s->name, name); f = fopen(x, "w"); if (!f) fatal("Cannot write to %s\n", x); @@ -180,13 +181,13 @@ void set_obj(struct slabinfo *s, char *name, int n) fclose(f); } -unsigned long read_slab_obj(struct slabinfo *s, char *name) +unsigned long read_slab_obj(struct slabinfo *s, const char *name) { char x[100]; FILE *f; - int l; + size_t l; - sprintf(x, "%s/%s", s->name, name); + snprintf(x, 100, "%s/%s", s->name, name); f = fopen(x, "r"); if (!f) { buffer[0] = 0; @@ -453,7 +454,7 @@ void slabcache(struct slabinfo *s) return; store_size(size_str, slab_size(s)); - sprintf(dist_str,"%lu/%lu/%d", s->slabs, s->partial, s->cpu_slabs); + snprintf(dist_str, 40, "%lu/%lu/%d", s->slabs, s->partial, s->cpu_slabs); if (!line++) first_line(); @@ -1062,6 +1063,7 @@ void read_slab_dir(void) 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"); @@ -1069,6 +1071,7 @@ void read_slab_dir(void) 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"); chdir(".."); @@ -1148,7 +1151,7 @@ int main(int argc, char *argv[]) while ((c = getopt_long(argc, argv, "ad::efhil1noprstvzTS", opts, NULL)) != -1) - switch(c) { + switch (c) { case '1': show_single_ref = 1; break; |