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authorJoonsoo Kim <iamjoonsoo.kim@lge.com>2020-06-04 01:59:01 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2020-06-04 06:09:44 +0300
commit97a225e69a1f880886f33d2e65a7ace13f152caa (patch)
tree5827c459fb9543eeb1ffec6b40edabf5f09e80ab /include/trace/events/vmscan.h
parent3334a45eb9e2bb040c880ef65e1d72357a0a008b (diff)
downloadlinux-97a225e69a1f880886f33d2e65a7ace13f152caa.tar.xz
mm/page_alloc: integrate classzone_idx and high_zoneidx
classzone_idx is just different name for high_zoneidx now. So, integrate them and add some comment to struct alloc_context in order to reduce future confusion about the meaning of this variable. The accessor, ac_classzone_idx() is also removed since it isn't needed after integration. In addition to integration, this patch also renames high_zoneidx to highest_zoneidx since it represents more precise meaning. Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Baoquan He <bhe@redhat.com> Acked-by: Vlastimil Babka <vbabka@suse.cz> Acked-by: David Rientjes <rientjes@google.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Mel Gorman <mgorman@techsingularity.net> Cc: Michal Hocko <mhocko@kernel.org> Cc: Minchan Kim <minchan@kernel.org> Cc: Ye Xiaolong <xiaolong.ye@intel.com> Link: http://lkml.kernel.org/r/1587095923-7515-3-git-send-email-iamjoonsoo.kim@lge.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/trace/events/vmscan.h')
-rw-r--r--include/trace/events/vmscan.h14
1 files changed, 9 insertions, 5 deletions
diff --git a/include/trace/events/vmscan.h b/include/trace/events/vmscan.h
index 74bb594ccb25..2070df64958e 100644
--- a/include/trace/events/vmscan.h
+++ b/include/trace/events/vmscan.h
@@ -265,7 +265,7 @@ TRACE_EVENT(mm_shrink_slab_end,
);
TRACE_EVENT(mm_vmscan_lru_isolate,
- TP_PROTO(int classzone_idx,
+ TP_PROTO(int highest_zoneidx,
int order,
unsigned long nr_requested,
unsigned long nr_scanned,
@@ -274,10 +274,10 @@ TRACE_EVENT(mm_vmscan_lru_isolate,
isolate_mode_t isolate_mode,
int lru),
- TP_ARGS(classzone_idx, order, nr_requested, nr_scanned, nr_skipped, nr_taken, isolate_mode, lru),
+ TP_ARGS(highest_zoneidx, order, nr_requested, nr_scanned, nr_skipped, nr_taken, isolate_mode, lru),
TP_STRUCT__entry(
- __field(int, classzone_idx)
+ __field(int, highest_zoneidx)
__field(int, order)
__field(unsigned long, nr_requested)
__field(unsigned long, nr_scanned)
@@ -288,7 +288,7 @@ TRACE_EVENT(mm_vmscan_lru_isolate,
),
TP_fast_assign(
- __entry->classzone_idx = classzone_idx;
+ __entry->highest_zoneidx = highest_zoneidx;
__entry->order = order;
__entry->nr_requested = nr_requested;
__entry->nr_scanned = nr_scanned;
@@ -298,9 +298,13 @@ TRACE_EVENT(mm_vmscan_lru_isolate,
__entry->lru = lru;
),
+ /*
+ * classzone is previous name of the highest_zoneidx.
+ * Reason not to change it is the ABI requirement of the tracepoint.
+ */
TP_printk("isolate_mode=%d classzone=%d order=%d nr_requested=%lu nr_scanned=%lu nr_skipped=%lu nr_taken=%lu lru=%s",
__entry->isolate_mode,
- __entry->classzone_idx,
+ __entry->highest_zoneidx,
__entry->order,
__entry->nr_requested,
__entry->nr_scanned,