diff options
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/vm/page-types.c | 39 |
1 files changed, 21 insertions, 18 deletions
diff --git a/Documentation/vm/page-types.c b/Documentation/vm/page-types.c index 18e891a329e..56f33b63d16 100644 --- a/Documentation/vm/page-types.c +++ b/Documentation/vm/page-types.c @@ -159,7 +159,6 @@ static unsigned long opt_size[MAX_ADDR_RANGES]; static int nr_vmas; static unsigned long pg_start[MAX_VMAS]; static unsigned long pg_end[MAX_VMAS]; -static unsigned long voffset; #define MAX_BIT_FILTERS 64 static int nr_bit_filters; @@ -328,7 +327,8 @@ static char *page_flag_longname(uint64_t flags) * page list and summary */ -static void show_page_range(unsigned long offset, uint64_t flags) +static void show_page_range(unsigned long voffset, + unsigned long offset, uint64_t flags) { static uint64_t flags0; static unsigned long voff; @@ -354,7 +354,8 @@ static void show_page_range(unsigned long offset, uint64_t flags) count = 1; } -static void show_page(unsigned long offset, uint64_t flags) +static void show_page(unsigned long voffset, + unsigned long offset, uint64_t flags) { if (opt_pid) printf("%lx\t", voffset); @@ -435,7 +436,6 @@ static uint64_t well_known_flags(uint64_t flags) return flags; } - /* * page frame walker */ @@ -467,7 +467,8 @@ static int hash_slot(uint64_t flags) exit(EXIT_FAILURE); } -static void add_page(unsigned long offset, uint64_t flags) +static void add_page(unsigned long voffset, + unsigned long offset, uint64_t flags) { flags = expand_overloaded_flags(flags); @@ -478,16 +479,18 @@ static void add_page(unsigned long offset, uint64_t flags) return; if (opt_list == 1) - show_page_range(offset, flags); + show_page_range(voffset, offset, flags); else if (opt_list == 2) - show_page(offset, flags); + show_page(voffset, offset, flags); nr_pages[hash_slot(flags)]++; total_pages++; } #define KPAGEFLAGS_BATCH (64 << 10) /* 64k pages */ -static void walk_pfn(unsigned long index, unsigned long count) +static void walk_pfn(unsigned long voffset, + unsigned long index, + unsigned long count) { uint64_t buf[KPAGEFLAGS_BATCH]; unsigned long batch; @@ -501,7 +504,7 @@ static void walk_pfn(unsigned long index, unsigned long count) break; for (i = 0; i < pages; i++) - add_page(index + i, buf[i]); + add_page(voffset + i, index + i, buf[i]); index += pages; count -= pages; @@ -525,9 +528,8 @@ static void walk_vma(unsigned long index, unsigned long count) for (i = 0; i < pages; i++) { pfn = pagemap_pfn(buf[i]); - voffset = index + i; if (pfn) - walk_pfn(pfn, 1); + walk_pfn(index + i, pfn, 1); } index += pages; @@ -537,8 +539,9 @@ static void walk_vma(unsigned long index, unsigned long count) static void walk_task(unsigned long index, unsigned long count) { - int i = 0; const unsigned long end = index + count; + unsigned long start; + int i = 0; while (index < end) { @@ -548,11 +551,11 @@ static void walk_task(unsigned long index, unsigned long count) if (pg_start[i] >= end) return; - voffset = max_t(unsigned long, pg_start[i], index); - index = min_t(unsigned long, pg_end[i], end); + start = max_t(unsigned long, pg_start[i], index); + index = min_t(unsigned long, pg_end[i], end); - assert(voffset < index); - walk_vma(voffset, index - voffset); + assert(start < index); + walk_vma(start, index - start); } } @@ -577,7 +580,7 @@ static void walk_addr_ranges(void) for (i = 0; i < nr_addr_ranges; i++) if (!opt_pid) - walk_pfn(opt_offset[i], opt_size[i]); + walk_pfn(0, opt_offset[i], opt_size[i]); else walk_task(opt_offset[i], opt_size[i]); @@ -879,7 +882,7 @@ int main(int argc, char *argv[]) walk_addr_ranges(); if (opt_list == 1) - show_page_range(0, 0); /* drain the buffer */ + show_page_range(0, 0, 0); /* drain the buffer */ if (opt_no_summary) return 0; |