133 lines
4.7 KiB
Diff
133 lines
4.7 KiB
Diff
From eaf14f852ae79f7745934e213661f1c6abac711e Mon Sep 17 00:00:00 2001
|
|
From: Greg Edwards <gedwards@ddn.com>
|
|
Date: Wed, 23 Jun 2021 13:50:47 -0600
|
|
Subject: [PATCH 10/16] Fix 'waitq' command for Linux 4.13 and later kernels
|
|
|
|
The wait queue structs and members were renamed in 4.13 in commits:
|
|
|
|
ac6424b981bc ("sched/wait: Rename wait_queue_t => wait_queue_entry_t")
|
|
9d9d676f595b ("sched/wait: Standardize internal naming of wait-queue heads")
|
|
2055da97389a ("sched/wait: Disambiguate wq_entry->task_list and wq_head->task_list naming")
|
|
|
|
Add support to the 'waitq' command for these more recent kernels.
|
|
|
|
[ kh: suppressed compilation warnings ]
|
|
|
|
Signed-off-by: Greg Edwards <gedwards@ddn.com>
|
|
Signed-off-by: Kazuhito Hagio <k-hagio-ab@nec.com>
|
|
Signed-off-by: Lianbo Jiang <lijiang@redhat.com>
|
|
---
|
|
defs.h | 4 ++++
|
|
kernel.c | 27 +++++++++++++++++++++++----
|
|
symbols.c | 10 +++++++++-
|
|
3 files changed, 36 insertions(+), 5 deletions(-)
|
|
|
|
diff --git a/defs.h b/defs.h
|
|
index 42c8074e6ac6..6bb00e29d811 100644
|
|
--- a/defs.h
|
|
+++ b/defs.h
|
|
@@ -2138,6 +2138,9 @@ struct offset_table { /* stash of commonly-used offsets */
|
|
long atomic_long_t_counter;
|
|
long block_device_bd_device;
|
|
long block_device_bd_stats;
|
|
+ long wait_queue_entry_private;
|
|
+ long wait_queue_head_head;
|
|
+ long wait_queue_entry_entry;
|
|
};
|
|
|
|
struct size_table { /* stash of commonly-used sizes */
|
|
@@ -2300,6 +2303,7 @@ struct size_table { /* stash of commonly-used sizes */
|
|
long printk_info;
|
|
long printk_ringbuffer;
|
|
long prb_desc;
|
|
+ long wait_queue_entry;
|
|
};
|
|
|
|
struct array_table {
|
|
diff --git a/kernel.c b/kernel.c
|
|
index 528f6ee524f6..e123f760e036 100644
|
|
--- a/kernel.c
|
|
+++ b/kernel.c
|
|
@@ -615,7 +615,15 @@ kernel_init()
|
|
kt->flags |= TVEC_BASES_V1;
|
|
|
|
STRUCT_SIZE_INIT(__wait_queue, "__wait_queue");
|
|
- if (VALID_STRUCT(__wait_queue)) {
|
|
+ STRUCT_SIZE_INIT(wait_queue_entry, "wait_queue_entry");
|
|
+ if (VALID_STRUCT(wait_queue_entry)) {
|
|
+ MEMBER_OFFSET_INIT(wait_queue_entry_private,
|
|
+ "wait_queue_entry", "private");
|
|
+ MEMBER_OFFSET_INIT(wait_queue_head_head,
|
|
+ "wait_queue_head", "head");
|
|
+ MEMBER_OFFSET_INIT(wait_queue_entry_entry,
|
|
+ "wait_queue_entry", "entry");
|
|
+ } else if (VALID_STRUCT(__wait_queue)) {
|
|
if (MEMBER_EXISTS("__wait_queue", "task"))
|
|
MEMBER_OFFSET_INIT(__wait_queue_task,
|
|
"__wait_queue", "task");
|
|
@@ -9367,9 +9375,9 @@ dump_waitq(ulong wq, char *wq_name)
|
|
struct list_data list_data, *ld;
|
|
ulong *wq_list; /* addr of wait queue element */
|
|
ulong next_offset; /* next pointer of wq element */
|
|
- ulong task_offset; /* offset of task in wq element */
|
|
+ ulong task_offset = 0; /* offset of task in wq element */
|
|
int cnt; /* # elems on Queue */
|
|
- int start_index; /* where to start in wq array */
|
|
+ int start_index = -1; /* where to start in wq array */
|
|
int i;
|
|
|
|
ld = &list_data;
|
|
@@ -9397,9 +9405,20 @@ dump_waitq(ulong wq, char *wq_name)
|
|
ld->list_head_offset = OFFSET(__wait_queue_task_list);
|
|
ld->member_offset = next_offset;
|
|
|
|
+ start_index = 1;
|
|
+ } else if (VALID_STRUCT(wait_queue_entry)) {
|
|
+ ulong head_offset;
|
|
+
|
|
+ next_offset = OFFSET(list_head_next);
|
|
+ task_offset = OFFSET(wait_queue_entry_private);
|
|
+ head_offset = OFFSET(wait_queue_head_head);
|
|
+ ld->end = ld->start = wq + head_offset + next_offset;
|
|
+ ld->list_head_offset = OFFSET(wait_queue_entry_entry);
|
|
+ ld->member_offset = next_offset;
|
|
+
|
|
start_index = 1;
|
|
} else {
|
|
- return;
|
|
+ error(FATAL, "cannot determine wait queue structures\n");
|
|
}
|
|
|
|
hq_open();
|
|
diff --git a/symbols.c b/symbols.c
|
|
index 370d4c3e8ac0..67c135f12984 100644
|
|
--- a/symbols.c
|
|
+++ b/symbols.c
|
|
@@ -9817,7 +9817,13 @@ dump_offset_table(char *spec, ulong makestruct)
|
|
OFFSET(__wait_queue_head_task_list));
|
|
fprintf(fp, " __wait_queue_task_list: %ld\n",
|
|
OFFSET(__wait_queue_task_list));
|
|
-
|
|
+ fprintf(fp, " wait_queue_entry_private: %ld\n",
|
|
+ OFFSET(wait_queue_entry_private));
|
|
+ fprintf(fp, " wait_queue_head_head: %ld\n",
|
|
+ OFFSET(wait_queue_head_head));
|
|
+ fprintf(fp, " wait_queue_entry_entry: %ld\n",
|
|
+ OFFSET(wait_queue_entry_entry));
|
|
+
|
|
fprintf(fp, " pglist_data_node_zones: %ld\n",
|
|
OFFSET(pglist_data_node_zones));
|
|
fprintf(fp, " pglist_data_node_mem_map: %ld\n",
|
|
@@ -10717,6 +10723,8 @@ dump_offset_table(char *spec, ulong makestruct)
|
|
fprintf(fp, " wait_queue: %ld\n", SIZE(wait_queue));
|
|
fprintf(fp, " __wait_queue: %ld\n",
|
|
SIZE(__wait_queue));
|
|
+ fprintf(fp, " wait_queue_entry: %ld\n",
|
|
+ SIZE(wait_queue_entry));
|
|
fprintf(fp, " device: %ld\n", SIZE(device));
|
|
fprintf(fp, " net_device: %ld\n", SIZE(net_device));
|
|
|
|
--
|
|
2.30.2
|
|
|