49 lines
2.1 KiB
Diff
49 lines
2.1 KiB
Diff
From 9ce31a14d1083cbb2beb4a8e6eb7b88234b79a99 Mon Sep 17 00:00:00 2001
|
|
From: Kazuhito Hagio <k-hagio-ab@nec.com>
|
|
Date: Fri, 10 Jun 2022 11:49:47 +0900
|
|
Subject: [PATCH 13/18] sbitmapq: Fix for sbitmap_queue without ws_active
|
|
member
|
|
|
|
The sbitmap_queue.ws_active member was added by kernel commit 5d2ee7122c73
|
|
("sbitmap: optimize wakeup check") at Linux 5.0. Without the patch, on
|
|
earlier kernels the "sbitmapq" command fails with the following error:
|
|
|
|
crash> sbitmapq ffff8f1a3611cf10
|
|
|
|
sbitmapq: invalid structure member offset: sbitmap_queue_ws_active
|
|
FILE: sbitmap.c LINE: 393 FUNCTION: sbitmap_queue_context_load()
|
|
|
|
Signed-off-by: Kazuhito Hagio <k-hagio-ab@nec.com>
|
|
Signed-off-by: Lianbo Jiang <lijiang@redhat.com>
|
|
---
|
|
sbitmap.c | 6 ++++--
|
|
1 file changed, 4 insertions(+), 2 deletions(-)
|
|
|
|
diff --git a/sbitmap.c b/sbitmap.c
|
|
index e8ebd62fe01c..152c28e6875f 100644
|
|
--- a/sbitmap.c
|
|
+++ b/sbitmap.c
|
|
@@ -325,7 +325,8 @@ static void sbitmap_queue_show(const struct sbitmap_queue_context *sqc,
|
|
|
|
fprintf(fp, "wake_batch = %u\n", sqc->wake_batch);
|
|
fprintf(fp, "wake_index = %d\n", sqc->wake_index);
|
|
- fprintf(fp, "ws_active = %d\n", sqc->ws_active);
|
|
+ if (VALID_MEMBER(sbitmap_queue_ws_active)) /* 5.0 and later */
|
|
+ fprintf(fp, "ws_active = %d\n", sqc->ws_active);
|
|
|
|
sbq_wait_state_size = SIZE(sbq_wait_state);
|
|
wait_cnt_off = OFFSET(sbq_wait_state_wait_cnt);
|
|
@@ -380,7 +381,8 @@ static void sbitmap_queue_context_load(ulong addr, struct sbitmap_queue_context
|
|
sqc->wake_batch = UINT(sbitmap_queue_buf + OFFSET(sbitmap_queue_wake_batch));
|
|
sqc->wake_index = INT(sbitmap_queue_buf + OFFSET(sbitmap_queue_wake_index));
|
|
sqc->ws_addr = ULONG(sbitmap_queue_buf + OFFSET(sbitmap_queue_ws));
|
|
- sqc->ws_active = INT(sbitmap_queue_buf + OFFSET(sbitmap_queue_ws_active));
|
|
+ if (VALID_MEMBER(sbitmap_queue_ws_active))
|
|
+ sqc->ws_active = INT(sbitmap_queue_buf + OFFSET(sbitmap_queue_ws_active));
|
|
if (VALID_MEMBER(sbitmap_queue_round_robin))
|
|
sqc->round_robin = BOOL(sbitmap_queue_buf + OFFSET(sbitmap_queue_round_robin));
|
|
sqc->min_shallow_depth = UINT(sbitmap_queue_buf + OFFSET(sbitmap_queue_min_shallow_depth));
|
|
--
|
|
2.30.2
|
|
|