diff options
Diffstat (limited to 'tools/vm/page-types.c')
| -rw-r--r-- | tools/vm/page-types.c | 28 |
1 files changed, 21 insertions, 7 deletions
diff --git a/tools/vm/page-types.c b/tools/vm/page-types.c index e92903fc7113..a8783f48f77f 100644 --- a/tools/vm/page-types.c +++ b/tools/vm/page-types.c @@ -169,9 +169,10 @@ static int opt_raw; /* for kernel developers */ static int opt_list; /* list pages (in ranges) */ static int opt_no_summary; /* don't show summary */ static pid_t opt_pid; /* process to walk */ -const char * opt_file; /* file or directory path */ +const char *opt_file; /* file or directory path */ static uint64_t opt_cgroup; /* cgroup inode */ static int opt_list_cgroup;/* list page cgroup */ +static const char *opt_kpageflags;/* kpageflags file to parse */ #define MAX_ADDR_RANGES 1024 static int nr_addr_ranges; @@ -258,7 +259,7 @@ static int checked_open(const char *pathname, int flags) * pagemap/kpageflags routines */ -static unsigned long do_u64_read(int fd, char *name, +static unsigned long do_u64_read(int fd, const char *name, uint64_t *buf, unsigned long index, unsigned long count) @@ -283,7 +284,7 @@ static unsigned long kpageflags_read(uint64_t *buf, unsigned long index, unsigned long pages) { - return do_u64_read(kpageflags_fd, PROC_KPAGEFLAGS, buf, index, pages); + return do_u64_read(kpageflags_fd, opt_kpageflags, buf, index, pages); } static unsigned long kpagecgroup_read(uint64_t *buf, @@ -293,7 +294,7 @@ static unsigned long kpagecgroup_read(uint64_t *buf, if (kpagecgroup_fd < 0) return pages; - return do_u64_read(kpagecgroup_fd, PROC_KPAGEFLAGS, buf, index, pages); + return do_u64_read(kpagecgroup_fd, opt_kpageflags, buf, index, pages); } static unsigned long pagemap_read(uint64_t *buf, @@ -743,7 +744,7 @@ static void walk_addr_ranges(void) { int i; - kpageflags_fd = checked_open(PROC_KPAGEFLAGS, O_RDONLY); + kpageflags_fd = checked_open(opt_kpageflags, O_RDONLY); if (!nr_addr_ranges) add_addr_range(0, ULONG_MAX); @@ -790,6 +791,7 @@ static void usage(void) " -N|--no-summary Don't show summary info\n" " -X|--hwpoison hwpoison pages\n" " -x|--unpoison unpoison pages\n" +" -F|--kpageflags filename kpageflags file to parse\n" " -h|--help Show this usage message\n" "flags:\n" " 0x10 bitfield format, e.g.\n" @@ -1013,7 +1015,7 @@ static void walk_page_cache(void) { struct stat st; - kpageflags_fd = checked_open(PROC_KPAGEFLAGS, O_RDONLY); + kpageflags_fd = checked_open(opt_kpageflags, O_RDONLY); pagemap_fd = checked_open("/proc/self/pagemap", O_RDONLY); sigaction(SIGBUS, &sigbus_action, NULL); @@ -1164,6 +1166,11 @@ static void parse_bits_mask(const char *optarg) add_bits_filter(mask, bits); } +static void parse_kpageflags(const char *name) +{ + opt_kpageflags = name; +} + static void describe_flags(const char *optarg) { uint64_t flags = parse_flag_names(optarg, 0); @@ -1188,6 +1195,7 @@ static const struct option opts[] = { { "no-summary", 0, NULL, 'N' }, { "hwpoison" , 0, NULL, 'X' }, { "unpoison" , 0, NULL, 'x' }, + { "kpageflags", 0, NULL, 'F' }, { "help" , 0, NULL, 'h' }, { NULL , 0, NULL, 0 } }; @@ -1199,7 +1207,7 @@ int main(int argc, char *argv[]) page_size = getpagesize(); while ((c = getopt_long(argc, argv, - "rp:f:a:b:d:c:ClLNXxh", opts, NULL)) != -1) { + "rp:f:a:b:d:c:ClLNXxF:h", opts, NULL)) != -1) { switch (c) { case 'r': opt_raw = 1; @@ -1242,6 +1250,9 @@ int main(int argc, char *argv[]) opt_unpoison = 1; prepare_hwpoison_fd(); break; + case 'F': + parse_kpageflags(optarg); + break; case 'h': usage(); exit(0); @@ -1251,6 +1262,9 @@ int main(int argc, char *argv[]) } } + if (!opt_kpageflags) + opt_kpageflags = PROC_KPAGEFLAGS; + if (opt_cgroup || opt_list_cgroup) kpagecgroup_fd = checked_open(PROC_KPAGECGROUP, O_RDONLY); |