[patch 05/10] appldata: remove unused binary sysctls.
From: Martin Schwidefsky
Date: Fri Nov 16 2007 - 09:29:22 EST
From: Heiko Carstens <heiko.carstens@xxxxxxxxxx>
Remove binary sysctls that never worked due to missing strategy functions.
Cc: "Eric W. Biederman" <ebiederm@xxxxxxxxxxxx>
Cc: Christian Borntraeger <borntraeger@xxxxxxxxxx>
Cc: Gerald Schaefer <geraldsc@xxxxxxxxxx>
Signed-off-by: Heiko Carstens <heiko.carstens@xxxxxxxxxx>
Signed-off-by: Martin Schwidefsky <schwidefsky@xxxxxxxxxx>
---
arch/s390/appldata/appldata.h | 1
arch/s390/appldata/appldata_base.c | 74 ++++++----------------------------
arch/s390/appldata/appldata_mem.c | 1
arch/s390/appldata/appldata_net_sum.c | 1
arch/s390/appldata/appldata_os.c | 1
include/linux/sysctl.h | 1
kernel/sysctl_check.c | 11 -----
7 files changed, 15 insertions(+), 75 deletions(-)
diff -urpN linux-2.6/arch/s390/appldata/appldata_base.c linux-2.6-patched/arch/s390/appldata/appldata_base.c
--- linux-2.6/arch/s390/appldata/appldata_base.c 2007-11-16 14:27:30.000000000 +0100
+++ linux-2.6-patched/arch/s390/appldata/appldata_base.c 2007-11-16 14:27:42.000000000 +0100
@@ -53,29 +53,26 @@ static int appldata_interval_handler(ctl
static struct ctl_table_header *appldata_sysctl_header;
static struct ctl_table appldata_table[] = {
{
- .ctl_name = CTL_APPLDATA_TIMER,
.procname = "timer",
.mode = S_IRUGO | S_IWUSR,
.proc_handler = &appldata_timer_handler,
},
{
- .ctl_name = CTL_APPLDATA_INTERVAL,
.procname = "interval",
.mode = S_IRUGO | S_IWUSR,
.proc_handler = &appldata_interval_handler,
},
- { .ctl_name = 0 }
+ { },
};
static struct ctl_table appldata_dir_table[] = {
{
- .ctl_name = CTL_APPLDATA,
.procname = appldata_proc_name,
.maxlen = 0,
.mode = S_IRUGO | S_IXUGO,
.child = appldata_table,
},
- { .ctl_name = 0 }
+ { },
};
/*
@@ -441,75 +438,38 @@ out:
*/
int appldata_register_ops(struct appldata_ops *ops)
{
- struct list_head *lh;
- struct appldata_ops *tmp_ops;
- int i;
-
- i = 0;
+ if ((ops->size > APPLDATA_MAX_REC_SIZE) || (ops->size < 0))
+ return -EINVAL;
- if ((ops->size > APPLDATA_MAX_REC_SIZE) ||
- (ops->size < 0)){
- P_ERROR("Invalid size of %s record = %i, maximum = %i!\n",
- ops->name, ops->size, APPLDATA_MAX_REC_SIZE);
- return -ENOMEM;
- }
- if ((ops->ctl_nr == CTL_APPLDATA) ||
- (ops->ctl_nr == CTL_APPLDATA_TIMER) ||
- (ops->ctl_nr == CTL_APPLDATA_INTERVAL)) {
- P_ERROR("ctl_nr %i already in use!\n", ops->ctl_nr);
- return -EBUSY;
- }
- ops->ctl_table = kzalloc(4*sizeof(struct ctl_table), GFP_KERNEL);
- if (ops->ctl_table == NULL) {
- P_ERROR("Not enough memory for %s ctl_table!\n", ops->name);
+ ops->ctl_table = kzalloc(4 * sizeof(struct ctl_table), GFP_KERNEL);
+ if (!ops->ctl_table)
return -ENOMEM;
- }
spin_lock(&appldata_ops_lock);
- list_for_each(lh, &appldata_ops_list) {
- tmp_ops = list_entry(lh, struct appldata_ops, list);
- P_DEBUG("register_ops loop: %i) name = %s, ctl = %i\n",
- ++i, tmp_ops->name, tmp_ops->ctl_nr);
- P_DEBUG("Comparing %s (ctl %i) with %s (ctl %i)\n",
- tmp_ops->name, tmp_ops->ctl_nr, ops->name,
- ops->ctl_nr);
- if (strncmp(tmp_ops->name, ops->name,
- APPLDATA_PROC_NAME_LENGTH) == 0) {
- P_ERROR("Name \"%s\" already registered!\n", ops->name);
- kfree(ops->ctl_table);
- spin_unlock(&appldata_ops_lock);
- return -EBUSY;
- }
- if (tmp_ops->ctl_nr == ops->ctl_nr) {
- P_ERROR("ctl_nr %i already registered!\n", ops->ctl_nr);
- kfree(ops->ctl_table);
- spin_unlock(&appldata_ops_lock);
- return -EBUSY;
- }
- }
list_add(&ops->list, &appldata_ops_list);
spin_unlock(&appldata_ops_lock);
- ops->ctl_table[0].ctl_name = CTL_APPLDATA;
ops->ctl_table[0].procname = appldata_proc_name;
ops->ctl_table[0].maxlen = 0;
ops->ctl_table[0].mode = S_IRUGO | S_IXUGO;
ops->ctl_table[0].child = &ops->ctl_table[2];
- ops->ctl_table[1].ctl_name = 0;
-
- ops->ctl_table[2].ctl_name = ops->ctl_nr;
ops->ctl_table[2].procname = ops->name;
ops->ctl_table[2].mode = S_IRUGO | S_IWUSR;
ops->ctl_table[2].proc_handler = appldata_generic_handler;
ops->ctl_table[2].data = ops;
- ops->ctl_table[3].ctl_name = 0;
-
ops->sysctl_header = register_sysctl_table(ops->ctl_table);
-
+ if (!ops->sysctl_header)
+ goto out;
P_INFO("%s-ops registered!\n", ops->name);
return 0;
+out:
+ spin_lock(&appldata_ops_lock);
+ list_del(&ops->list);
+ spin_unlock(&appldata_ops_lock);
+ kfree(ops->ctl_table);
+ return -ENOMEM;
}
/*
@@ -519,15 +479,11 @@ int appldata_register_ops(struct appldat
*/
void appldata_unregister_ops(struct appldata_ops *ops)
{
- void *table;
spin_lock(&appldata_ops_lock);
list_del(&ops->list);
- /* at that point any incoming access will fail */
- table = ops->ctl_table;
- ops->ctl_table = NULL;
spin_unlock(&appldata_ops_lock);
unregister_sysctl_table(ops->sysctl_header);
- kfree(table);
+ kfree(ops->ctl_table);
P_INFO("%s-ops unregistered!\n", ops->name);
}
/********************** module-ops management <END> **************************/
diff -urpN linux-2.6/arch/s390/appldata/appldata.h linux-2.6-patched/arch/s390/appldata/appldata.h
--- linux-2.6/arch/s390/appldata/appldata.h 2007-10-09 22:31:38.000000000 +0200
+++ linux-2.6-patched/arch/s390/appldata/appldata.h 2007-11-16 14:27:42.000000000 +0100
@@ -45,7 +45,6 @@ struct appldata_ops {
int active; /* monitoring status */
/* fill in from here */
- unsigned int ctl_nr; /* sysctl ID */
char name[APPLDATA_PROC_NAME_LENGTH]; /* name of /proc fs node */
unsigned char record_nr; /* Record Nr. for Product ID */
void (*callback)(void *data); /* callback function */
diff -urpN linux-2.6/arch/s390/appldata/appldata_mem.c linux-2.6-patched/arch/s390/appldata/appldata_mem.c
--- linux-2.6/arch/s390/appldata/appldata_mem.c 2007-10-09 22:31:38.000000000 +0200
+++ linux-2.6-patched/arch/s390/appldata/appldata_mem.c 2007-11-16 14:27:42.000000000 +0100
@@ -147,7 +147,6 @@ static void appldata_get_mem_data(void *
static struct appldata_ops ops = {
- .ctl_nr = CTL_APPLDATA_MEM,
.name = "mem",
.record_nr = APPLDATA_RECORD_MEM_ID,
.size = sizeof(struct appldata_mem_data),
diff -urpN linux-2.6/arch/s390/appldata/appldata_net_sum.c linux-2.6-patched/arch/s390/appldata/appldata_net_sum.c
--- linux-2.6/arch/s390/appldata/appldata_net_sum.c 2007-11-16 14:27:30.000000000 +0100
+++ linux-2.6-patched/arch/s390/appldata/appldata_net_sum.c 2007-11-16 14:27:42.000000000 +0100
@@ -142,7 +142,6 @@ static void appldata_get_net_sum_data(vo
static struct appldata_ops ops = {
- .ctl_nr = CTL_APPLDATA_NET_SUM,
.name = "net_sum",
.record_nr = APPLDATA_RECORD_NET_SUM_ID,
.size = sizeof(struct appldata_net_sum_data),
diff -urpN linux-2.6/arch/s390/appldata/appldata_os.c linux-2.6-patched/arch/s390/appldata/appldata_os.c
--- linux-2.6/arch/s390/appldata/appldata_os.c 2007-10-09 22:31:38.000000000 +0200
+++ linux-2.6-patched/arch/s390/appldata/appldata_os.c 2007-11-16 14:27:42.000000000 +0100
@@ -82,7 +82,6 @@ struct appldata_os_data {
static struct appldata_os_data *appldata_os_data;
static struct appldata_ops ops = {
- .ctl_nr = CTL_APPLDATA_OS,
.name = "os",
.record_nr = APPLDATA_RECORD_OS_ID,
.owner = THIS_MODULE,
diff -urpN linux-2.6/include/linux/sysctl.h linux-2.6-patched/include/linux/sysctl.h
--- linux-2.6/include/linux/sysctl.h 2007-11-16 14:27:42.000000000 +0100
+++ linux-2.6-patched/include/linux/sysctl.h 2007-11-16 14:27:42.000000000 +0100
@@ -70,7 +70,6 @@ enum
CTL_ABI=9, /* Binary emulation */
CTL_CPU=10, /* CPU stuff (speed scaling, etc) */
CTL_ARLAN=254, /* arlan wireless driver */
- CTL_APPLDATA=2120, /* s390 appldata */
CTL_S390DBF=5677, /* s390 debug */
CTL_SUNRPC=7249, /* sunrpc debug */
CTL_PM=9899, /* frv power management */
diff -urpN linux-2.6/kernel/sysctl_check.c linux-2.6-patched/kernel/sysctl_check.c
--- linux-2.6/kernel/sysctl_check.c 2007-11-16 14:27:42.000000000 +0100
+++ linux-2.6-patched/kernel/sysctl_check.c 2007-11-16 14:27:42.000000000 +0100
@@ -1216,16 +1216,6 @@ static struct trans_ctl_table trans_arla
{}
};
-static struct trans_ctl_table trans_appldata_table[] = {
- { CTL_APPLDATA_TIMER, "timer" },
- { CTL_APPLDATA_INTERVAL, "interval" },
- { CTL_APPLDATA_OS, "os" },
- { CTL_APPLDATA_NET_SUM, "net_sum" },
- { CTL_APPLDATA_MEM, "mem" },
- {}
-
-};
-
static struct trans_ctl_table trans_s390dbf_table[] = {
{ 5678 /* CTL_S390DBF_STOPPABLE */, "debug_stoppable" },
{ 5679 /* CTL_S390DBF_ACTIVE */, "debug_active" },
@@ -1270,7 +1260,6 @@ static struct trans_ctl_table trans_root
{ CTL_ABI, "abi" },
/* CTL_CPU not used */
{ CTL_ARLAN, "arlan", trans_arlan_table },
- { CTL_APPLDATA, "appldata", trans_appldata_table },
{ CTL_S390DBF, "s390dbf", trans_s390dbf_table },
{ CTL_SUNRPC, "sunrpc", trans_sunrpc_table },
{ CTL_PM, "pm", trans_pm_table },
--
blue skies,
Martin.
"Reality continues to ruin my life." - Calvin.
-
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