On 2/9/21 11:56 AM, Yafang Shao wrote: > Currently the pGp only shows the names of page flags, rather than > the full information including section, node, zone, last cpupid and > kasan tag. While it is not easy to parse these information manually > because there're so many flavors. Let's interpret them in pGp as well. > > To be compitable with the existed format of pGp, the new introduced ones > also use '|' as the separator, then the user tools parsing pGp won't > need to make change, suggested by Matthew. The new information is > tracked onto the end of the existed one. > > On example of the output in mm/slub.c as follows, > - Before the patch, > [ 6343.396602] Slab 0x000000004382e02b objects=33 used=3 fp=0x000000009ae06ffc flags=0x17ffffc0010200(slab|head) > > - After the patch, > [ 8838.835456] Slab 0x000000002828b78a objects=33 used=3 fp=0x00000000d04efc88 flags=0x17ffffc0010200(slab|head|node=0|zone=2|lastcpupid=0x1fffff) > > The documentation and test cases are also updated. The output of the > test cases as follows, > [ 501.485081] test_printf: loaded. > [ 501.485768] test_printf: all 388 tests passed > [ 501.488762] test_printf: unloaded. > > Signed-off-by: Yafang Shao <laoar.shao@xxxxxxxxx> > Cc: David Hildenbrand <david@xxxxxxxxxx> > Cc: Joe Perches <joe@xxxxxxxxxxx> > Cc: Miaohe Lin <linmiaohe@xxxxxxxxxx> > Cc: Vlastimil Babka <vbabka@xxxxxxx> > Cc: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx> > Cc: Matthew Wilcox <willy@xxxxxxxxxxxxx> Acked-by: Vlastimil Babka <vbabka@xxxxxxx> The 'pfl' array should be even useful in kernel crash dump tools!
