Attachment 1479344 Details for Bug 1623127 – task_struct.pid_links patch

task_struct.pid_links patch

pid_links.patch (text/plain), 1.77 KB, created by Dave Anderson on 2018-08-28 19:26:37 UTC

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Creator: Dave Anderson

Created: 2018-08-28 19:26:37 UTC

Size: 1.77 KB

patch

obsolete

>diff --git a/defs.h b/defs.h
>index 8687ff1..1dc8cca 100644
>--- a/defs.h
>+++ b/defs.h
>@@ -2036,6 +2036,7 @@ struct offset_table {                    /* stash of commonly-used offsets */
> 	long memcg_cache_params___root_caches_node;
> 	long memcg_cache_params_children;
> 	long memcg_cache_params_children_node;
>+	long task_struct_pid_links;
> };
> 
> struct size_table {         /* stash of commonly-used sizes */
>diff --git a/symbols.c b/symbols.c
>index 2e6713a..48a0ee6 100644
>--- a/symbols.c
>+++ b/symbols.c
>@@ -8606,6 +8606,8 @@ dump_offset_table(char *spec, ulong makestruct)
>                 OFFSET(task_rss_stat_count));
>         fprintf(fp, "              task_struct_pids: %ld\n",
>                 OFFSET(task_struct_pids));
>+        fprintf(fp, "         task_struct_pid_links: %ld\n",
>+                OFFSET(task_struct_pid_links));
>         fprintf(fp, "          task_struct_last_run: %ld\n",
>                 OFFSET(task_struct_last_run));
>         fprintf(fp, "         task_struct_timestamp: %ld\n",
>diff --git a/task.c b/task.c
>index 39fb0de..1eecfce 100644
>--- a/task.c
>+++ b/task.c
>@@ -314,6 +314,7 @@ task_init(void)
> 	        strcpy(buf, "alias last ps -l");
>         	alias_init(buf);
> 	}
>+	MEMBER_OFFSET_INIT(task_struct_pid_links, "task_struct", "pid_links");
> 	MEMBER_OFFSET_INIT(pid_link_pid, "pid_link", "pid");
> 	MEMBER_OFFSET_INIT(pid_hash_chain, "pid", "hash_chain");
> 
>@@ -2382,7 +2383,10 @@ retry_radix_tree:
> 		pid_tasks_0 = ULONG(pidbuf + OFFSET(pid_tasks));
> 		if (!pid_tasks_0)
> 			continue;
>-		task = pid_tasks_0 - OFFSET(task_struct_pids);
>+		if (VALID_MEMBER(task_struct_pids))
>+			task = pid_tasks_0 - OFFSET(task_struct_pids);
>+		else
>+			task = pid_tasks_0 - OFFSET(task_struct_pid_links);
> 
> 		if (CRASHDEBUG(1))
> 			console("pid: %lx  ns: %lx  tasks[0]: %lx task: %lx\n",

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Attachments on bug 1623127: 1479278 | 1479344