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-rw-r--r--mm/page_owner.c16
1 files changed, 11 insertions, 5 deletions
diff --git a/mm/page_owner.c b/mm/page_owner.c
index 4f13ce7d24..5634e5d890 100644
--- a/mm/page_owner.c
+++ b/mm/page_owner.c
@@ -32,6 +32,8 @@ struct page_owner {
char comm[TASK_COMM_LEN];
pid_t pid;
pid_t tgid;
+ pid_t free_pid;
+ pid_t free_tgid;
};
static bool page_owner_enabled __initdata;
@@ -119,7 +121,6 @@ static noinline depot_stack_handle_t save_stack(gfp_t flags)
* Sometimes page metadata allocation tracking requires more
* memory to be allocated:
* - when new stack trace is saved to stack depot
- * - when backtrace itself is calculated (ia64)
*/
if (current->in_page_owner)
return dummy_handle;
@@ -152,6 +153,8 @@ void __reset_page_owner(struct page *page, unsigned short order)
page_owner = get_page_owner(page_ext);
page_owner->free_handle = handle;
page_owner->free_ts_nsec = free_ts_nsec;
+ page_owner->free_pid = current->pid;
+ page_owner->free_tgid = current->tgid;
page_ext = page_ext_next(page_ext);
}
page_ext_put(page_ext);
@@ -253,6 +256,8 @@ void __folio_copy_owner(struct folio *newfolio, struct folio *old)
new_page_owner->handle = old_page_owner->handle;
new_page_owner->pid = old_page_owner->pid;
new_page_owner->tgid = old_page_owner->tgid;
+ new_page_owner->free_pid = old_page_owner->free_pid;
+ new_page_owner->free_tgid = old_page_owner->free_tgid;
new_page_owner->ts_nsec = old_page_owner->ts_nsec;
new_page_owner->free_ts_nsec = old_page_owner->ts_nsec;
strcpy(new_page_owner->comm, old_page_owner->comm);
@@ -315,7 +320,7 @@ void pagetypeinfo_showmixedcount_print(struct seq_file *m,
unsigned long freepage_order;
freepage_order = buddy_order_unsafe(page);
- if (freepage_order <= MAX_ORDER)
+ if (freepage_order <= MAX_PAGE_ORDER)
pfn += (1UL << freepage_order) - 1;
continue;
}
@@ -495,7 +500,8 @@ void __dump_page_owner(const struct page *page)
if (!handle) {
pr_alert("page_owner free stack trace missing\n");
} else {
- pr_alert("page last free stack trace:\n");
+ pr_alert("page last free pid %d tgid %d stack trace:\n",
+ page_owner->free_pid, page_owner->free_tgid);
stack_depot_print(handle);
}
@@ -549,7 +555,7 @@ read_page_owner(struct file *file, char __user *buf, size_t count, loff_t *ppos)
if (PageBuddy(page)) {
unsigned long freepage_order = buddy_order_unsafe(page);
- if (freepage_order <= MAX_ORDER)
+ if (freepage_order <= MAX_PAGE_ORDER)
pfn += (1UL << freepage_order) - 1;
continue;
}
@@ -657,7 +663,7 @@ static void init_pages_in_zone(pg_data_t *pgdat, struct zone *zone)
if (PageBuddy(page)) {
unsigned long order = buddy_order_unsafe(page);
- if (order > 0 && order <= MAX_ORDER)
+ if (order > 0 && order <= MAX_PAGE_ORDER)
pfn += (1UL << order) - 1;
continue;
}