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| author | Wonhyuk Yang <vvghjk1234@gmail.com> | 2022-05-20 00:08:54 +0300 |
|---|---|---|
| committer | akpm <akpm@linux-foundation.org> | 2022-05-20 00:08:54 +0300 |
| commit | 10e0f7530205799e7e971aba699a7cb3a47456de (patch) | |
| tree | 59c411f5a71f545580da5c4f89b36b134bd4bf72 /mm/internal.h | |
| parent | 3645b5ec0ad644942e363c9a695a6f4c783c0a43 (diff) | |
| download | linux-10e0f7530205799e7e971aba699a7cb3a47456de.tar.xz | |
mm/page_alloc: fix tracepoint mm_page_alloc_zone_locked()
Currently, trace point mm_page_alloc_zone_locked() doesn't show correct
information.
First, when alloc_flag has ALLOC_HARDER/ALLOC_CMA, page can be allocated
from MIGRATE_HIGHATOMIC/MIGRATE_CMA. Nevertheless, tracepoint use
requested migration type not MIGRATE_HIGHATOMIC and MIGRATE_CMA.
Second, after commit 44042b4498728 ("mm/page_alloc: allow high-order pages
to be stored on the per-cpu lists") percpu-list can store high order
pages. But trace point determine whether it is a refiil of percpu-list by
comparing requested order and 0.
To handle these problems, make mm_page_alloc_zone_locked() only be called
by __rmqueue_smallest with correct migration type. With a new argument
called percpu_refill, it can show roughly whether it is a refill of
percpu-list.
Link: https://lkml.kernel.org/r/20220512025307.57924-1-vvghjk1234@gmail.com
Signed-off-by: Wonhyuk Yang <vvghjk1234@gmail.com>
Acked-by: Mel Gorman <mgorman@suse.de>
Cc: Baik Song An <bsahn@etri.re.kr>
Cc: Hong Yeon Kim <kimhy@etri.re.kr>
Cc: Taeung Song <taeung@reallinux.co.kr>
Cc: <linuxgeek@linuxgeek.io>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Ingo Molnar <mingo@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/internal.h')
0 files changed, 0 insertions, 0 deletions