The patch titled
per-task-delay-accounting-taskstats-interface-control-exit-data-through-cpumasks-fix
has been removed from the -mm tree. Its filename is
per-task-delay-accounting-taskstats-interface-control-exit-data-through-cpumasks-fix.patch
This patch was dropped because it was folded into per-task-delay-accounting-taskstats-interface-control-exit-data-through-cpumasks.patch
------------------------------------------------------
Subject: per-task-delay-accounting-taskstats-interface-control-exit-data-through-cpumasks-fix
From: Andrew Morton <akpm@xxxxxxxx>
Cc: Shailabh Nagar <nagar@xxxxxxxxxxxxxx>
Cc: Thomas Graf <tgraf@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
kernel/taskstats.c | 48 ++++++++++++++++++++++++++-----------------
1 file changed, 30 insertions(+), 18 deletions(-)
diff -puN kernel/taskstats.c~per-task-delay-accounting-taskstats-interface-control-exit-data-through-cpumasks-fix kernel/taskstats.c
--- a/kernel/taskstats.c~per-task-delay-accounting-taskstats-interface-control-exit-data-through-cpumasks-fix
+++ a/kernel/taskstats.c
@@ -299,6 +299,28 @@ cleanup:
return 0;
}
+static int parse(struct nlattr *na, cpumask_t *mask)
+{
+ char *data;
+ int len;
+ int ret;
+
+ if (na == NULL)
+ return 1;
+ len = nla_len(na);
+ if (len > TASKSTATS_CPUMASK_MAXLEN)
+ return -E2BIG;
+ if (len < 1)
+ return -EINVAL;
+ data = kmalloc(len, GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+ nla_strlcpy(data, na, len);
+ ret = cpulist_parse(data, *mask);
+ kfree(data);
+ return ret;
+}
+
static int taskstats_user_cmd(struct sk_buff *skb, struct genl_info *info)
{
int rc = 0;
@@ -309,27 +331,17 @@ static int taskstats_user_cmd(struct sk_
struct nlattr *na;
cpumask_t mask;
- if (info->attrs[TASKSTATS_CMD_ATTR_REGISTER_CPUMASK]) {
- na = info->attrs[TASKSTATS_CMD_ATTR_REGISTER_CPUMASK];
- if (nla_len(na) > TASKSTATS_CPUMASK_MAXLEN)
- return -E2BIG;
- rc = cpulist_parse((char *)nla_data(na), mask);
- if (rc)
- return rc;
- rc = add_del_listener(info->snd_pid, &mask, REGISTER);
+ rc = parse(info->attrs[TASKSTATS_CMD_ATTR_REGISTER_CPUMASK], &mask);
+ if (rc < 0)
return rc;
- }
+ if (rc == 0)
+ return add_del_listener(info->snd_pid, &mask, REGISTER);
- if (info->attrs[TASKSTATS_CMD_ATTR_DEREGISTER_CPUMASK]) {
- na = info->attrs[TASKSTATS_CMD_ATTR_DEREGISTER_CPUMASK];
- if (nla_len(na) > TASKSTATS_CPUMASK_MAXLEN)
- return -E2BIG;
- rc = cpulist_parse((char *)nla_data(na), mask);
- if (rc)
- return rc;
- rc = add_del_listener(info->snd_pid, &mask, DEREGISTER);
+ rc = parse(info->attrs[TASKSTATS_CMD_ATTR_DEREGISTER_CPUMASK], &mask);
+ if (rc < 0)
return rc;
- }
+ if (rc == 0)
+ return add_del_listener(info->snd_pid, &mask, DEREGISTER);
/*
* Size includes space for nested attributes
_
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