linux-kernel - [PATCH mm] tracing: incorrect isolate_mote_t cast in mm_vmscan_lru

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Date:   Wed, 11 May 2022 12:46:53 +0300
From:   Vasily Averin <vvs@...nvz.org>
To:     Steven Rostedt <rostedt@...dmis.org>,
        Ingo Molnar <mingo@...hat.com>,
        Andrew Morton <akpm@...ux-foundation.org>
Cc:     kernel@...nvz.org, linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: [PATCH mm] tracing: incorrect isolate_mote_t cast in
 mm_vmscan_lru_isolate

Fixes following sparse warnings:

  CHECK   mm/vmscan.c
mm/vmscan.c: note: in included file (through
include/trace/trace_events.h, include/trace/define_trace.h,
include/trace/events/vmscan.h):
./include/trace/events/vmscan.h:281:1: sparse: warning:
 cast to restricted isolate_mode_t
./include/trace/events/vmscan.h:281:1: sparse: warning:
 restricted isolate_mode_t degrades to integer

Signed-off-by: Vasily Averin <vvs@...nvz.org>
---
 include/trace/events/vmscan.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/trace/events/vmscan.h b/include/trace/events/vmscan.h
index 408c86244d64..d2123dd960d5 100644
--- a/include/trace/events/vmscan.h
+++ b/include/trace/events/vmscan.h
@@ -297,7 +297,7 @@ TRACE_EVENT(mm_vmscan_lru_isolate,
 		__field(unsigned long, nr_scanned)
 		__field(unsigned long, nr_skipped)
 		__field(unsigned long, nr_taken)
-		__field(isolate_mode_t, isolate_mode)
+		__field(unsigned int, isolate_mode)
 		__field(int, lru)
 	),
 
@@ -308,7 +308,7 @@ TRACE_EVENT(mm_vmscan_lru_isolate,
 		__entry->nr_scanned = nr_scanned;
 		__entry->nr_skipped = nr_skipped;
 		__entry->nr_taken = nr_taken;
-		__entry->isolate_mode = isolate_mode;
+		__entry->isolate_mode = (__force unsigned int)isolate_mode;
 		__entry->lru = lru;
 	),
 
-- 
2.31.1