diff options
| author | Imran Khan <imran.f.khan@oracle.com> | 2021-11-08 18:33:16 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-11-09 10:02:50 -0800 |
| commit | 0f68d45ef41abb618a9ca33996348ae73800a106 (patch) | |
| tree | d09081e3773301b064e6f723c0ae8ff84eef234e /mm | |
| parent | 505be48165fa2f2cb795659b4fc61f35563d105e (diff) | |
lib, stackdepot: add helper to print stack entries into buffer
To print stack entries into a buffer, users of stackdepot, first get a
list of stack entries using stack_depot_fetch and then print this list
into a buffer using stack_trace_snprint. Provide a helper in stackdepot
for this purpose. Also change above mentioned users to use this helper.
[imran.f.khan@oracle.com: fix build error]
Link: https://lkml.kernel.org/r/20210915175321.3472770-4-imran.f.khan@oracle.com
[imran.f.khan@oracle.com: export stack_depot_snprint() to modules]
Link: https://lkml.kernel.org/r/20210916133535.3592491-4-imran.f.khan@oracle.com
Link: https://lkml.kernel.org/r/20210915014806.3206938-4-imran.f.khan@oracle.com
Signed-off-by: Imran Khan <imran.f.khan@oracle.com>
Suggested-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Jani Nikula <jani.nikula@intel.com> [i915]
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Konovalov <andreyknvl@gmail.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: David Airlie <airlied@linux.ie>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/page_owner.c | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/mm/page_owner.c b/mm/page_owner.c index eff29be1218b..1653040d1133 100644 --- a/mm/page_owner.c +++ b/mm/page_owner.c @@ -329,8 +329,6 @@ print_page_owner(char __user *buf, size_t count, unsigned long pfn, depot_stack_handle_t handle) { int ret, pageblock_mt, page_mt; - unsigned long *entries; - unsigned int nr_entries; char *kbuf; count = min_t(size_t, count, PAGE_SIZE); @@ -361,8 +359,7 @@ print_page_owner(char __user *buf, size_t count, unsigned long pfn, if (ret >= count) goto err; - nr_entries = stack_depot_fetch(handle, &entries); - ret += stack_trace_snprint(kbuf + ret, count - ret, entries, nr_entries, 0); + ret += stack_depot_snprint(handle, kbuf + ret, count - ret, 0); if (ret >= count) goto err; |