+/*
+ * Copyright (C) 2010 Timo Kokkonen <timo.t.kokkonen@iki.fi>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <sys/types.h>
+#include <sys/stat.h>
#include <stdio.h>
#include <stdlib.h>
-#include <string.h>
-#include <errno.h>
+#include <fcntl.h>
+#include <unistd.h>
#include "parse.h"
#include "pagemap.h"
{
struct maps_list *map;
- map = malloc(sizeof *map);
+ map = calloc(sizeof *map, 1);
if (map == NULL)
goto err;
- memset(map, 0, sizeof(*map));
INIT_LIST_HEAD(&map->list);
err:
return map;
{
struct maps *map;
- map = malloc(sizeof *map);
+ map = calloc(sizeof(*map), 1);
if (map == NULL)
goto err;
- memset(map, 0, sizeof(*map));
INIT_LIST_HEAD(&map->list);
err:
return map;
while (fgets(line, sizeof(line), file)) {
struct maps *map = alloc_map();
unsigned long start, end;
- char name[1024];
+ int skip;
if (map == NULL)
return 0;
if (the_map == NULL)
the_map = map;
- ret = sscanf(line, "%lx-%lx %*s %*s %*s %*s %s",
- &start, &end, name);
+ ret = sscanf(line, "%lx-%lx %*s %*s %*s %*s %n",
+ &start, &end, &skip);
if (ret < 2) {
printf("Error reading input: %s\n", line);
map->pid = pid;
map->tid = tid;
- if (ret >= 3)
- strncpy(map->name, name, sizeof(map->name));
+ strncpy(map->name, line + skip, sizeof(map->name) - 1);
+
+ /* zero out the newline */
+ map->name[MAX(strlen(map->name) - 1, 0)] = '\0';
list_add_tail(&map->list, &the_map->list);
}
return pageframe;
}
-static int compare_pageframe(struct bintree *at, struct bintree *bt)
+static int pid_is_match(int pidn, struct list_head *pidlist)
{
- struct pageframe *a, *b;
- a = tree_to_pageframe(at);
- b = tree_to_pageframe(bt);
+ struct pidlist *pid;
- return a->pf - b->pf;
-}
+ list_for_each_entry(pid, pidlist, list) {
+ if (pid->pid == pidn)
+ return 1;
+ }
-struct bintree_ops pageframe_ops = {
- .compare = compare_pageframe,
-};
+ return 0;
+}
static int should_scan_process(struct parse_opts *opts, struct process *process)
{
- struct pidlist *pid;
int match = 0;
- if (is_parse_option(opts, PARSE_PID)) {
- list_for_each_entry(pid, &opts->pidlist, list) {
- if (pid->pid == process->pid) {
+ if (is_parse_option(opts, PARSE_PID) &&
+ is_parse_option(opts, PARSE_MAP_NAME)) {
+ if (pid_is_match(process->pid, &opts->pidlist))
+ match = 1;
+ } else {
+ if (is_parse_option(opts, PARSE_PID)) {
+ if (pid_is_match(process->pid, &opts->pidlist))
match = 1;
- break;
- }
}
- }
- if (is_parse_option(opts, PARSE_MAP_NAME))
- match = 1;
+ if (is_parse_option(opts, PARSE_MAP_NAME))
+ match = 1;
+ }
if (is_parse_option(opts, PARSE_NOADD_TREE))
match = !match;
}
/* Read data from the /proc/pid/pagemap file */
-static int parse_pageframe(FILE *file, struct pageframe *pf_tree,
+static int parse_pageframe(FILE *file, struct rb_root *root,
struct maps *maps, struct parse_opts *opts)
{
struct maps *map;
struct pageframe *match, *pageframe = NULL;
long start, len, i;
unsigned long long pf[10240];
- int ret, error;
+ int ret;
if (maps == NULL)
return 0;
ret = fseek(file, start, SEEK_SET);
if (ret) {
- error = errno;
- fprintf(stderr, "Error seeking to %lx: %s\n", start,
- strerror(error));
+ fprintf(stderr, "Error seeking to %lx: %m\n", start);
continue;
}
MIN(sizeof(pf), (len - i) * 8), file);
}
if (ret < 0) {
- error = errno;
continue;
}
if (!pageframe)
page_present(pageframe)))
continue;
- if (should_add_to_tree(opts, pageframe, map)) {
- match = tree_to_pageframe(
- bintree_add(&pf_tree->tree,
- &pageframe->tree,
- &pageframe_ops));
- } else {
- match = tree_to_pageframe(
- bintree_find(&pf_tree->tree,
- &pageframe->tree,
- &pageframe_ops));
- }
+ if (should_add_to_tree(opts, pageframe, map))
+ match = pf_insert(root, pageframe);
+ else
+ match = pf_search(root, pageframe);
if (match == NULL)
continue;
return 0;
}
-static int read_pageframe(int pid, int tid, struct pageframe *pageframe,
+static int read_pageframe(int pid, int tid, struct rb_root *root,
struct process *process_list, struct parse_opts *opts)
{
struct maps *maps;
FILE *file;
char path[512];
- process = malloc(sizeof(*process));
- memset(process, 0, sizeof(*process));
+ process = calloc(sizeof(*process), 1);
INIT_LIST_HEAD(&process->list);
process->pid = pid;
if (!file)
goto free;
- parse_pageframe(file, pageframe, maps, opts);
+ parse_pageframe(file, root, maps, opts);
fclose(file);
if (read_cmdline(pid, tid, process->name, sizeof(process->name)))
goto free;
- if (maps != NULL) {
- list_for_each_entry(maps, &process->maps->list, list) {
- process->pages_present += maps->pages_present;
- process->pages_swapped += maps->pages_swapped;
- }
- }
-
if (!is_parse_option(opts, PARSE_NOADD_TREE))
process->is_initial_pid = 1;
}
static int read_pageframe_with_threads(int pid,
- struct pageframe *pageframe,
+ struct rb_root *root,
struct process *process_list,
struct parse_opts *opts)
{
if (tid <= 0)
return count;
- count += read_pageframe(pid, tid, pageframe, process_list,
- opts);
+ count += read_pageframe(pid, tid, root, process_list, opts);
if (!opts->with_threads)
break;
return count;
}
-int scan_all_pids(struct pageframe *pf, struct process *process_list,
+int scan_all_pids(struct rb_root *root, struct process *process_list,
struct parse_opts *opts)
{
struct pidlist *pidlist, *n;
DIR *dir = NULL;
int pid;
int count = 0;
+ int len = 0, i;
if (is_parse_option(opts, PARSE_PID)) {
list_for_each_entry_safe(pidlist, n, &opts->pidlist, list) {
- count += read_pageframe_with_threads(pidlist->pid, pf,
+ count += read_pageframe_with_threads(pidlist->pid, root,
process_list, opts);
}
}
if (is_parse_option(opts, PARSE_DUMP))
return 0;
- if (is_parse_option(opts, PARSE_MAP_NAME)) {
+ if (is_parse_option(opts, PARSE_MAP_NAME) &&
+ !is_parse_option(opts, PARSE_PID)) {
+ printf("Scanning page mappings for process: ");
while (1) {
pid = get_next_pid(&dir);
if (pid <= 0)
break;
- read_pageframe_with_threads(pid, pf, process_list,
+
+ for (i = 0; i < len; i++)
+ putchar('\b');
+ len = printf("% 5d", pid);
+ fflush(stdout);
+
+ read_pageframe_with_threads(pid, root, process_list,
opts);
}
+
+ for (i = 0; i < len; i++)
+ putchar('\b');
+ printf("Done \n");
+ len = 0;
}
/* Do not add new pages in the tree after the initial scan */
opts->parse_mask |= PARSE_NOADD_TREE;
+ printf("Scanning page mappings for process: ");
while (1) {
pid = get_next_pid(&dir);
if (pid <= 0)
break;
- read_pageframe_with_threads(pid, pf, process_list, opts);
+
+ for (i = 0; i < len; i++)
+ putchar('\b');
+ len = printf("% 5d", pid);
+ fflush(stdout);
+
+ read_pageframe_with_threads(pid, root, process_list, opts);
+ }
+ for (i = 0; i < len; i++)
+ putchar('\b');
+ printf("Done \n");
+
+ return 0;
+}
+
+int update_kpageflags(struct rb_root *root)
+{
+ struct pageframe *pf;
+ int kpageflags_fd;
+ int kpagecount_fd;
+ int ret;
+
+ kpageflags_fd = open("/proc/kpageflags", O_RDONLY);
+ if (kpageflags_fd < 0)
+ return -1;
+
+ kpagecount_fd = open("/proc/kpagecount", O_RDONLY);
+ if (kpagecount_fd < 0)
+ return -1;
+
+ pf = rb_to_pageframe(rb_first(root));
+
+ while(pf) {
+ long int pfnn = pfn(pf) * sizeof(pf->kpageflags);
+
+ ret = lseek(kpageflags_fd, pfnn, SEEK_SET);
+ if (ret < 0) {
+ fprintf(stderr, "Error seeking to %lx: %m\n", pfnn);
+ return -1;
+ }
+
+ ret = read(kpageflags_fd, &pf->kpageflags,
+ sizeof(pf->kpageflags));
+ if (ret < 0) {
+ fprintf(stderr, "Error reading from %llx: %m\n",
+ pf->pf * sizeof(pf->kpageflags));
+ return -1;
+ }
+
+ ret = lseek(kpagecount_fd, pfnn, SEEK_SET);
+ if (ret < 0) {
+ fprintf(stderr, "Error seeking to %lx: %m\n", pfnn);
+ return -1;
+ }
+
+ ret = read(kpagecount_fd, &pf->kpagecount,
+ sizeof(pf->kpagecount));
+ if (ret < 0) {
+ fprintf(stderr, "Error reading from %llx: %m\n",
+ pf->pf * sizeof(pf->kpagecount));
+ return -1;
+ }
+
+ pf = rb_to_pageframe(rb_next(&pf->tree));
}
+ close(kpageflags_fd);
+ close(kpagecount_fd);
+
return 0;
}
projects / scan-pagemap / blobdiff