See upstream commit:
commit 3481c37ffa1de58ef140d0fe9eabf56305e74666
Author: Yafang Shao <laoar.s...@gmail.com>
Date: Mon May 13 17:19:14 2019 -0700
mm/vmscan: drop may_writepage and classzone_idx from direct reclaim begin
template
There are three tracepoints using this template, which are
mm_vmscan_direct_reclaim_begin,
mm_vmscan_memcg_reclaim_begin,
mm_vmscan_memcg_softlimit_reclaim_begin.
Regarding mm_vmscan_direct_reclaim_begin,
sc.may_writepage is !laptop_mode, that's a static setting, and
reclaim_idx is derived from gfp_mask which is already show in this
tracepoint.
Regarding mm_vmscan_memcg_reclaim_begin,
may_writepage is !laptop_mode too, and reclaim_idx is (MAX_NR_ZONES-1),
which are both static value.
mm_vmscan_memcg_softlimit_reclaim_begin is the same with
mm_vmscan_memcg_reclaim_begin.
So we can drop them all.
Signed-off-by: Michael Jeanson <mjean...@efficios.com>
---
.../events/lttng-module/mm_vmscan.h | 37 ++++++++++++++++++-
1 file changed, 36 insertions(+), 1 deletion(-)
diff --git a/instrumentation/events/lttng-module/mm_vmscan.h
b/instrumentation/events/lttng-module/mm_vmscan.h
index cc7a275..db4a906 100644
--- a/instrumentation/events/lttng-module/mm_vmscan.h
+++ b/instrumentation/events/lttng-module/mm_vmscan.h
@@ -114,7 +114,42 @@ LTTNG_TRACEPOINT_EVENT(mm_vmscan_wakeup_kswapd,
)
#endif
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,8,0))
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,2,0))
+
+LTTNG_TRACEPOINT_EVENT_CLASS(mm_vmscan_direct_reclaim_begin_template,
+
+ TP_PROTO(int order, gfp_t gfp_flags),
+
+ TP_ARGS(order, gfp_flags),
+
+ TP_FIELDS(
+ ctf_integer(int, order, order)
+ ctf_integer(gfp_t, gfp_flags, gfp_flags)
+ )
+)
+
+LTTNG_TRACEPOINT_EVENT_INSTANCE(mm_vmscan_direct_reclaim_begin_template,
mm_vmscan_direct_reclaim_begin,
+
+ TP_PROTO(int order, gfp_t gfp_flags),
+
+ TP_ARGS(order, gfp_flags)
+)
+
+LTTNG_TRACEPOINT_EVENT_INSTANCE(mm_vmscan_direct_reclaim_begin_template,
mm_vmscan_memcg_reclaim_begin,
+
+ TP_PROTO(int order, gfp_t gfp_flags),
+
+ TP_ARGS(order, gfp_flags)
+)
+
+LTTNG_TRACEPOINT_EVENT_INSTANCE(mm_vmscan_direct_reclaim_begin_template,
mm_vmscan_memcg_softlimit_reclaim_begin,
+
+ TP_PROTO(int order, gfp_t gfp_flags),
+
+ TP_ARGS(order, gfp_flags)
+)
+
+#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(4,8,0))
LTTNG_TRACEPOINT_EVENT_CLASS(mm_vmscan_direct_reclaim_begin_template,
--
2.17.1
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