perf kmem: Support sort keys on page analysis
Add new sort keys for page: page, order, mtype, gfp - existing
'bytes', 'hit' and 'callsite' sort keys also work for page. Note that
-s/--sort option should be preceded by either of --slab or --page
option to determine where the sort keys applies.
Now it properly groups and sorts allocation stats - so same
page/caller with different order/mtype/gfp will be printed on a
different line.
# perf kmem stat --page --caller -l 10 -s order,hit
--------------------------------------------------------------------------------------------
Total_alloc/Per | Hit | Order | Migrate type | GFP flag | Callsite
--------------------------------------------------------------------------------------------
65536/16384 | 4 | 2 | RECLAIMABLE | 00285250 | new_slab
51347456/4096 | 12536 | 0 | MOVABLE | 0102005a | __page_cache_alloc
53248/4096 | 13 | 0 | UNMOVABLE | 002084d0 | pte_alloc_one
40960/4096 | 10 | 0 | MOVABLE | 000280da | handle_mm_fault
28672/4096 | 7 | 0 | UNMOVABLE | 000000d0 | __pollwait
20480/4096 | 5 | 0 | MOVABLE | 000200da | do_wp_page
20480/4096 | 5 | 0 | MOVABLE | 000200da | do_cow_fault
16384/4096 | 4 | 0 | UNMOVABLE | 00000200 | __tlb_remove_page
16384/4096 | 4 | 0 | UNMOVABLE | 000084d0 | __pmd_alloc
8192/4096 | 2 | 0 | UNMOVABLE | 000084d0 | __pud_alloc
... | ... | ... | ... | ... | ...
--------------------------------------------------------------------------------------------
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
2 files changed
