2015-03-23 15:30 GMT+09:00 Namhyung Kim <namhy...@kernel.org>: > The perf kmem command records and analyze kernel memory allocation > only for SLAB objects. This patch implement a simple page allocator > analyzer using kmem:mm_page_alloc and kmem:mm_page_free events. > > It adds two new options of --slab and --page. The --slab option is > for analyzing SLAB allocator and that's what perf kmem currently does. > > The new --page option enables page allocator events and analyze kernel > memory usage in page unit. Currently, 'stat --alloc' subcommand is > implemented only. > > If none of these --slab nor --page is specified, --slab is implied. > > # perf kmem stat --page --alloc --line 10 > > > ------------------------------------------------------------------------------------- > Page | Total alloc (KB) | Hits | Order | Migration type | > GFP flags > > ------------------------------------------------------------------------------------- > ffffea0015e48e00 | 16 | 1 | 2 | RECLAIMABLE | > 00285250 > ffffea0015e47400 | 16 | 1 | 2 | RECLAIMABLE | > 00285250 > ffffea001440f600 | 16 | 1 | 2 | RECLAIMABLE | > 00285250 > ffffea001440cc00 | 16 | 1 | 2 | RECLAIMABLE | > 00285250 > ffffea00140c6300 | 16 | 1 | 2 | RECLAIMABLE | > 00285250 > ffffea00140c5c00 | 16 | 1 | 2 | RECLAIMABLE | > 00285250 > ffffea00140c5000 | 16 | 1 | 2 | RECLAIMABLE | > 00285250 > ffffea00140c4f00 | 16 | 1 | 2 | RECLAIMABLE | > 00285250 > ffffea00140c4e00 | 16 | 1 | 2 | RECLAIMABLE | > 00285250 > ffffea00140c4d00 | 16 | 1 | 2 | RECLAIMABLE | > 00285250 > ... | ... | ... | ... | ... | > ... > > -------------------------------------------------------------------------------------
Tracepoint on mm_page_alloc print out pfn as well as pointer of struct page. How about printing pfn rather than pointer of struct page? Thanks. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
