* Copyright (c) 2003 Dave Engebretsen
* Will Schmidt willschm@us.ibm.com
* SPLPAR updates, Copyright (c) 2003 Will Schmidt IBM Corporation.
+ * seq_file updates, Copyright (c) 2004 Will Schmidt IBM Corporation.
* Nathan Lynch nathanl@austin.ibm.com
* Added lparcfg_write, Copyright (C) 2004 Nathan Lynch IBM Corporation.
*
#include <linux/errno.h>
#include <linux/proc_fs.h>
#include <linux/init.h>
+#include <linux/seq_file.h>
#include <asm/uaccess.h>
#include <asm/iSeries/HvLpConfig.h>
#include <asm/iSeries/ItLpPaca.h>
+#include <asm/iSeries/LparData.h>
#include <asm/hvcall.h>
#include <asm/cputable.h>
+#include <asm/rtas.h>
+#include <asm/system.h>
-#define MODULE_VERS "1.0"
+#define MODULE_VERS "1.3"
#define MODULE_NAME "lparcfg"
+/* #define LPARCFG_DEBUG */
+
+/* find a better place for this function... */
+void log_plpar_hcall_return(unsigned long rc,char * tag)
+{
+ if (rc ==0 ) /* success, return */
+ return;
+/* check for null tag ? */
+ if (rc == H_Hardware)
+ printk(KERN_INFO "plpar-hcall (%s) failed with hardware fault\n",tag);
+ else if (rc == H_Function)
+ printk(KERN_INFO "plpar-hcall (%s) failed; function not allowed\n",tag);
+ else if (rc == H_Authority)
+ printk(KERN_INFO "plpar-hcall (%s) failed; not authorized to this function\n",tag);
+ else if (rc == H_Parameter)
+ printk(KERN_INFO "plpar-hcall (%s) failed; Bad parameter(s)\n",tag);
+ else
+ printk(KERN_INFO "plpar-hcall (%s) failed with unexpected rc(0x%lx)\n",tag,rc);
+
+}
+
+
static struct proc_dir_entry *proc_ppc64_lparcfg;
#define LPARCFG_BUFF_SIZE 4096
#define lparcfg_write NULL
-static unsigned char e2a(unsigned char x)
-{
- switch (x) {
- case 0xF0:
- return '0';
- case 0xF1:
- return '1';
- case 0xF2:
- return '2';
- case 0xF3:
- return '3';
- case 0xF4:
- return '4';
- case 0xF5:
- return '5';
- case 0xF6:
- return '6';
- case 0xF7:
- return '7';
- case 0xF8:
- return '8';
- case 0xF9:
- return '9';
- case 0xC1:
- return 'A';
- case 0xC2:
- return 'B';
- case 0xC3:
- return 'C';
- case 0xC4:
- return 'D';
- case 0xC5:
- return 'E';
- case 0xC6:
- return 'F';
- case 0xC7:
- return 'G';
- case 0xC8:
- return 'H';
- case 0xC9:
- return 'I';
- case 0xD1:
- return 'J';
- case 0xD2:
- return 'K';
- case 0xD3:
- return 'L';
- case 0xD4:
- return 'M';
- case 0xD5:
- return 'N';
- case 0xD6:
- return 'O';
- case 0xD7:
- return 'P';
- case 0xD8:
- return 'Q';
- case 0xD9:
- return 'R';
- case 0xE2:
- return 'S';
- case 0xE3:
- return 'T';
- case 0xE4:
- return 'U';
- case 0xE5:
- return 'V';
- case 0xE6:
- return 'W';
- case 0xE7:
- return 'X';
- case 0xE8:
- return 'Y';
- case 0xE9:
- return 'Z';
- }
- return ' ';
-}
-
/*
* Methods used to fetch LPAR data when running on an iSeries platform.
*/
-static int lparcfg_data(unsigned char *buf, unsigned long size)
+static int lparcfg_data(struct seq_file *m, void *v)
{
- unsigned long n = 0, pool_id, lp_index;
+ unsigned long pool_id, lp_index;
int shared, entitled_capacity, max_entitled_capacity;
int processors, max_processors;
struct paca_struct *lpaca = get_paca();
- if((buf == NULL) || (size > LPARCFG_BUFF_SIZE)) {
- return -EFAULT;
- }
- memset(buf, 0, size);
-
- shared = (int)(lpaca->xLpPacaPtr->xSharedProc);
- n += scnprintf(buf, LPARCFG_BUFF_SIZE - n,
- "serial_number=%c%c%c%c%c%c%c\n",
+ shared = (int)(lpaca->lppaca_ptr->xSharedProc);
+ seq_printf(m, "serial_number=%c%c%c%c%c%c%c\n",
e2a(xItExtVpdPanel.mfgID[2]),
e2a(xItExtVpdPanel.mfgID[3]),
e2a(xItExtVpdPanel.systemSerial[1]),
e2a(xItExtVpdPanel.systemSerial[4]),
e2a(xItExtVpdPanel.systemSerial[5]));
- n += scnprintf(buf+n, LPARCFG_BUFF_SIZE - n,
- "system_type=%c%c%c%c\n",
+ seq_printf(m, "system_type=%c%c%c%c\n",
e2a(xItExtVpdPanel.machineType[0]),
e2a(xItExtVpdPanel.machineType[1]),
e2a(xItExtVpdPanel.machineType[2]),
e2a(xItExtVpdPanel.machineType[3]));
lp_index = HvLpConfig_getLpIndex();
- n += scnprintf(buf+n, LPARCFG_BUFF_SIZE - n,
- "partition_id=%d\n", (int)lp_index);
+ seq_printf(m, "partition_id=%d\n", (int)lp_index);
- n += scnprintf(buf+n, LPARCFG_BUFF_SIZE - n,
- "system_active_processors=%d\n",
+ seq_printf(m, "system_active_processors=%d\n",
(int)HvLpConfig_getSystemPhysicalProcessors());
- n += scnprintf(buf+n, LPARCFG_BUFF_SIZE - n,
- "system_potential_processors=%d\n",
+ seq_printf(m, "system_potential_processors=%d\n",
(int)HvLpConfig_getSystemPhysicalProcessors());
processors = (int)HvLpConfig_getPhysicalProcessors();
- n += scnprintf(buf+n, LPARCFG_BUFF_SIZE - n,
- "partition_active_processors=%d\n", processors);
+ seq_printf(m, "partition_active_processors=%d\n", processors);
max_processors = (int)HvLpConfig_getMaxPhysicalProcessors();
- n += scnprintf(buf+n, LPARCFG_BUFF_SIZE - n,
- "partition_potential_processors=%d\n", max_processors);
+ seq_printf(m, "partition_potential_processors=%d\n", max_processors);
if(shared) {
entitled_capacity = HvLpConfig_getSharedProcUnits();
entitled_capacity = processors * 100;
max_entitled_capacity = max_processors * 100;
}
- n += scnprintf(buf+n, LPARCFG_BUFF_SIZE - n,
- "partition_entitled_capacity=%d\n", entitled_capacity);
+ seq_printf(m, "partition_entitled_capacity=%d\n", entitled_capacity);
- n += scnprintf(buf+n, LPARCFG_BUFF_SIZE - n,
- "partition_max_entitled_capacity=%d\n",
+ seq_printf(m, "partition_max_entitled_capacity=%d\n",
max_entitled_capacity);
if(shared) {
pool_id = HvLpConfig_getSharedPoolIndex();
- n += scnprintf(buf+n, LPARCFG_BUFF_SIZE - n, "pool=%d\n",
- (int)pool_id);
- n += scnprintf(buf+n, LPARCFG_BUFF_SIZE - n,
- "pool_capacity=%d\n", (int)(HvLpConfig_getNumProcsInSharedPool(pool_id)*100));
+ seq_printf(m, "pool=%d\n", (int)pool_id);
+ seq_printf(m, "pool_capacity=%d\n",
+ (int)(HvLpConfig_getNumProcsInSharedPool(pool_id)*100));
}
- n += scnprintf(buf+n, LPARCFG_BUFF_SIZE - n,
- "shared_processor_mode=%d\n", shared);
+ seq_printf(m, "shared_processor_mode=%d\n", shared);
return 0;
}
* XXXX - reserved (0)
* XXXX - Group Number
* XXXX - Pool Number.
- * R7 (PPOONNMMLLKKJJII)
+ * R7 (IIJJKKLLMMNNOOPP).
* XX - reserved. (0)
* XX - bit 0-6 reserved (0). bit 7 is Capped indicator.
* XX - variable processor Capacity Weight
* XXXX - Active processors in Physical Processor Pool.
* XXXX - Processors active on platform.
*/
-unsigned int h_get_ppp(unsigned long *entitled,unsigned long *unallocated,unsigned long *aggregation,unsigned long *resource)
+static unsigned int h_get_ppp(unsigned long *entitled,
+ unsigned long *unallocated, unsigned long *aggregation,
+ unsigned long *resource)
{
unsigned long rc;
rc = plpar_hcall_4out(H_GET_PPP,0,0,0,0,entitled,unallocated,aggregation,resource);
- return 0;
+
+ log_plpar_hcall_return(rc, "H_GET_PPP");
+
+ return rc;
}
-/*
- * get_splpar_potential_characteristics().
- * Retrieve the potential_processors and max_entitled_capacity values
- * through the get-system-parameter rtas call.
+static void h_pic(unsigned long *pool_idle_time, unsigned long *num_procs)
+{
+ unsigned long rc;
+ unsigned long dummy;
+ rc = plpar_hcall(H_PIC, 0, 0, 0, 0, pool_idle_time, num_procs, &dummy);
+
+ log_plpar_hcall_return(rc, "H_PIC");
+}
+
+static unsigned long get_purr(void);
+/* ToDo: get sum of purr across all processors. The purr collection code
+ * is coming, but at this time is still problematic, so for now this
+ * function will return 0.
*/
+static unsigned long get_purr()
+{
+ unsigned long sum_purr=0;
+ return sum_purr;
+}
+
#define SPLPAR_CHARACTERISTICS_TOKEN 20
#define SPLPAR_MAXLENGTH 1026*(sizeof(char))
-unsigned int get_splpar_potential_characteristics(void)
-{
- /* return 0 for now. Underlying rtas functionality is not yet complete. 12/01/2003*/
- return 0;
-#if 0
- long call_status;
- unsigned long ret[2];
- char * buffer = kmalloc(SPLPAR_MAXLENGTH, GFP_KERNEL);
+/*
+ * parse_system_parameter_string()
+ * Retrieve the potential_processors, max_entitled_capacity and friends
+ * through the get-system-parameter rtas call. Replace keyword strings as
+ * necessary.
+ */
+static void parse_system_parameter_string(struct seq_file *m)
+{
+ int call_status;
- printk("token for ibm,get-system-parameter (0x%x)\n",rtas_token("ibm,get-system-parameter"));
+ char * local_buffer = kmalloc(SPLPAR_MAXLENGTH, GFP_KERNEL);
+ if (!local_buffer) {
+ printk(KERN_ERR "%s %s kmalloc failure at line %d \n",
+ __FILE__, __FUNCTION__, __LINE__);
+ return;
+ }
+ spin_lock(&rtas_data_buf_lock);
+ memset(rtas_data_buf, 0, SPLPAR_MAXLENGTH);
call_status = rtas_call(rtas_token("ibm,get-system-parameter"), 3, 1,
NULL,
SPLPAR_CHARACTERISTICS_TOKEN,
- &buffer,
- SPLPAR_MAXLENGTH,
- (void *)&ret);
-
- if (call_status!=0) {
- printk("Error calling get-system-parameter (0x%lx)\n",call_status);
- kfree(buffer);
- return -1;
+ __pa(rtas_data_buf));
+ memcpy(local_buffer, rtas_data_buf, SPLPAR_MAXLENGTH);
+ spin_unlock(&rtas_data_buf_lock);
+
+ if (call_status != 0) {
+ printk(KERN_INFO "%s %s Error calling get-system-parameter (0x%x)\n",
+ __FILE__, __FUNCTION__, call_status);
} else {
- printk("get-system-parameter (%s)\n",buffer);
- kfree(buffer);
- /* TODO: Add code here to parse out value for system_potential_processors and partition_max_entitled_capacity */
- return 1;
+ int splpar_strlen;
+ int idx, w_idx;
+ char * workbuffer = kmalloc(SPLPAR_MAXLENGTH, GFP_KERNEL);
+ if (!workbuffer) {
+ printk(KERN_ERR "%s %s kmalloc failure at line %d \n",__FILE__,__FUNCTION__,__LINE__);
+ return;
+ }
+
+#ifdef LPARCFG_DEBUG
+ printk(KERN_INFO "success calling get-system-parameter \n");
+#endif
+ splpar_strlen = local_buffer[0] * 16 + local_buffer[1];
+ local_buffer += 2; /* step over strlen value */
+
+ memset(workbuffer, 0, SPLPAR_MAXLENGTH);
+ w_idx = 0;
+ idx = 0;
+ while ((*local_buffer) && (idx < splpar_strlen)) {
+ workbuffer[w_idx++] = local_buffer[idx++];
+ if ((local_buffer[idx] == ',')
+ || (local_buffer[idx] == '\0')) {
+ workbuffer[w_idx] = '\0';
+ if (w_idx) {
+ /* avoid the empty string */
+ seq_printf(m, "%s\n", workbuffer);
+ }
+ memset(workbuffer, 0, SPLPAR_MAXLENGTH);
+ idx++; /* skip the comma */
+ w_idx = 0;
+ } else if (local_buffer[idx] == '=') {
+ /* code here to replace workbuffer contents
+ with different keyword strings */
+ if (0 == strcmp(workbuffer,"MaxEntCap")) {
+ strcpy(workbuffer, "partition_max_entitled_capacity");
+ w_idx = strlen(workbuffer);
+ }
+ if (0 == strcmp(workbuffer,"MaxPlatProcs")) {
+ strcpy(workbuffer, "system_potential_processors");
+ w_idx = strlen(workbuffer);
+ }
+ }
+ }
+ kfree(workbuffer);
+ local_buffer -= 2; /* back up over strlen value */
}
+ kfree(local_buffer);
+}
+
+static int lparcfg_count_active_processors(void);
+
+/* Return the number of processors in the system.
+ * This function reads through the device tree and counts
+ * the virtual processors, this does not include threads.
+ */
+static int lparcfg_count_active_processors(void)
+{
+ struct device_node *cpus_dn = NULL;
+ int count = 0;
+
+ while ((cpus_dn = of_find_node_by_type(cpus_dn, "cpu"))) {
+#ifdef LPARCFG_DEBUG
+ printk(KERN_ERR "cpus_dn %p \n",cpus_dn);
#endif
+ count++;
+ }
+ return count;
}
-static int lparcfg_data(unsigned char *buf, unsigned long size)
+static int lparcfg_data(struct seq_file *m, void *v)
{
- unsigned long n = 0;
- int shared, max_entitled_capacity;
- int processors, system_active_processors, system_potential_processors;
- struct device_node *root;
+ int system_active_processors;
+ struct device_node *rootdn;
const char *model = "";
const char *system_id = "";
unsigned int *lp_index_ptr, lp_index = 0;
struct device_node *rtas_node;
- int *ip;
- unsigned long h_entitled,h_unallocated,h_aggregation,h_resource;
-
- if((buf == NULL) || (size > LPARCFG_BUFF_SIZE)) {
- return -EFAULT;
- }
- memset(buf, 0, size);
-
- root = find_path_device("/");
- if (root) {
- model = get_property(root, "model", NULL);
- system_id = get_property(root, "system-id", NULL);
- lp_index_ptr = (unsigned int *)get_property(root, "ibm,partition-no", NULL);
- if(lp_index_ptr) lp_index = *lp_index_ptr;
+ int *lrdrp;
+
+ rootdn = find_path_device("/");
+ if (rootdn) {
+ model = get_property(rootdn, "model", NULL);
+ system_id = get_property(rootdn, "system-id", NULL);
+ lp_index_ptr = (unsigned int *)
+ get_property(rootdn, "ibm,partition-no", NULL);
+ if (lp_index_ptr)
+ lp_index = *lp_index_ptr;
}
- n = scnprintf(buf, LPARCFG_BUFF_SIZE - n,
- "serial_number=%s\n", system_id);
- n += scnprintf(buf+n, LPARCFG_BUFF_SIZE - n,
- "system_type=%s\n", model);
+ seq_printf(m, "%s %s \n", MODULE_NAME, MODULE_VERS);
+
+ seq_printf(m, "serial_number=%s\n", system_id);
+
+ seq_printf(m, "system_type=%s\n", model);
- n += scnprintf(buf+n, LPARCFG_BUFF_SIZE - n,
- "partition_id=%d\n", (int)lp_index);
+ seq_printf(m, "partition_id=%d\n", (int)lp_index);
rtas_node = find_path_device("/rtas");
- ip = (int *)get_property(rtas_node, "ibm,lrdr-capacity", NULL);
- if (ip == NULL) {
- system_active_processors = systemcfg->processorCount;
+ lrdrp = (int *)get_property(rtas_node, "ibm,lrdr-capacity", NULL);
+
+ if (lrdrp == NULL) {
+ system_active_processors = systemcfg->processorCount;
} else {
- system_active_processors = *(ip + 4);
+ system_active_processors = *(lrdrp + 4);
}
if (cur_cpu_spec->firmware_features & FW_FEATURE_SPLPAR) {
- h_get_ppp(&h_entitled,&h_unallocated,&h_aggregation,&h_resource);
-#ifdef DEBUG
- n += scnprintf(buf+n, LPARCFG_BUFF_SIZE - n,
- "R4=0x%lx\n", h_entitled);
- n += scnprintf(buf+n, LPARCFG_BUFF_SIZE - n,
- "R5=0x%lx\n", h_unallocated);
- n += scnprintf(buf+n, LPARCFG_BUFF_SIZE - n,
- "R6=0x%lx\n", h_aggregation);
- n += scnprintf(buf+n, LPARCFG_BUFF_SIZE - n,
- "R7=0x%lx\n", h_resource);
-#endif /* DEBUG */
- }
+ unsigned long h_entitled, h_unallocated;
+ unsigned long h_aggregation, h_resource;
+ unsigned long pool_idle_time, pool_procs;
+ unsigned long purr;
- if (cur_cpu_spec->firmware_features & FW_FEATURE_SPLPAR) {
- system_potential_processors = get_splpar_potential_characteristics();
- n += scnprintf(buf+n, LPARCFG_BUFF_SIZE - n,
- "system_active_processors=%ld\n",
+ h_get_ppp(&h_entitled, &h_unallocated, &h_aggregation,
+ &h_resource);
+
+ seq_printf(m, "R4=0x%lx\n", h_entitled);
+ seq_printf(m, "R5=0x%lx\n", h_unallocated);
+ seq_printf(m, "R6=0x%lx\n", h_aggregation);
+ seq_printf(m, "R7=0x%lx\n", h_resource);
+
+ h_pic(&pool_idle_time, &pool_procs);
+
+ purr = get_purr();
+
+ /* this call handles the ibm,get-system-parameter contents */
+ parse_system_parameter_string(m);
+
+ seq_printf(m, "partition_entitled_capacity=%ld\n",
+ h_entitled);
+
+ seq_printf(m, "pool=%ld\n",
+ (h_aggregation >> 0*8) & 0xffff);
+
+ seq_printf(m, "group=%ld\n",
+ (h_aggregation >> 2*8) & 0xffff);
+
+ seq_printf(m, "system_active_processors=%ld\n",
+ (h_resource >> 0*8) & 0xffff);
+
+ seq_printf(m, "pool_capacity=%ld\n",
(h_resource >> 2*8) & 0xffff);
- n += scnprintf(buf+n, LPARCFG_BUFF_SIZE - n,
- "system_potential_processors=%d\n",
- system_potential_processors);
- } else {
- system_potential_processors = system_active_processors;
- n += scnprintf(buf+n, LPARCFG_BUFF_SIZE - n,
- "system_active_processors=%d\n",
- system_active_processors);
- n += scnprintf(buf+n, LPARCFG_BUFF_SIZE - n,
- "system_potential_processors=%d\n",
- system_potential_processors);
- }
- processors = systemcfg->processorCount;
- n += scnprintf(buf+n, LPARCFG_BUFF_SIZE - n,
- "partition_active_processors=%d\n", processors);
- n += scnprintf(buf+n, LPARCFG_BUFF_SIZE - n,
- "partition_potential_processors=%d\n",
- system_active_processors);
+ seq_printf(m, "unallocated_capacity_weight=%ld\n",
+ (h_resource >> 4*8) & 0xFF);
- /* max_entitled_capacity will come out of get_splpar_potential_characteristics() when that function is complete */
- max_entitled_capacity = system_active_processors * 100;
- if (cur_cpu_spec->firmware_features & FW_FEATURE_SPLPAR) {
- n += scnprintf(buf+n, LPARCFG_BUFF_SIZE - n,
- "partition_entitled_capacity=%ld\n", h_entitled);
- } else {
- n += scnprintf(buf+n, LPARCFG_BUFF_SIZE - n,
- "partition_entitled_capacity=%d\n", system_active_processors*100);
- }
+ seq_printf(m, "capacity_weight=%ld\n",
+ (h_resource >> 5*8) & 0xFF);
- n += scnprintf(buf+n, LPARCFG_BUFF_SIZE - n,
- "partition_max_entitled_capacity=%d\n",
- max_entitled_capacity);
+ seq_printf(m, "capped=%ld\n",
+ (h_resource >> 6*8) & 0x01);
- shared = 0;
- n += scnprintf(buf+n, LPARCFG_BUFF_SIZE - n,
- "shared_processor_mode=%d\n", shared);
+ seq_printf(m, "unallocated_capacity=%ld\n",
+ h_unallocated);
- if (cur_cpu_spec->firmware_features & FW_FEATURE_SPLPAR) {
- n += scnprintf(buf+n, LPARCFG_BUFF_SIZE - n,
- "pool=%ld\n", (h_aggregation >> 0*8)&0xffff);
+ seq_printf(m, "pool_idle_time=%ld\n",
+ pool_idle_time);
- n += scnprintf(buf+n, LPARCFG_BUFF_SIZE - n,
- "pool_capacity=%ld\n", (h_resource >> 3*8) &0xffff);
+ seq_printf(m, "pool_num_procs=%ld\n",
+ pool_procs);
- n += scnprintf(buf+n, LPARCFG_BUFF_SIZE - n,
- "group=%ld\n", (h_aggregation >> 2*8)&0xffff);
+ seq_printf(m, "purr=%ld\n",
+ purr);
- n += scnprintf(buf+n, LPARCFG_BUFF_SIZE - n,
- "capped=%ld\n", (h_resource >> 6*8)&0x40);
+ } else /* non SPLPAR case */ {
+ seq_printf(m, "system_active_processors=%d\n",
+ system_active_processors);
+
+ seq_printf(m, "system_potential_processors=%d\n",
+ system_active_processors);
- n += scnprintf(buf+n, LPARCFG_BUFF_SIZE - n,
- "capacity_weight=%d\n", (int)(h_resource>>5*8)&0xFF);
+ seq_printf(m, "partition_max_entitled_capacity=%d\n",
+ 100*system_active_processors);
+
+ seq_printf(m, "partition_entitled_capacity=%d\n",
+ system_active_processors*100);
}
+
+ seq_printf(m, "partition_active_processors=%d\n",
+ (int) lparcfg_count_active_processors());
+
+ seq_printf(m, "partition_potential_processors=%d\n",
+ system_active_processors);
+
+ seq_printf(m, "shared_processor_mode=%d\n",
+ paca[0].lppaca.xSharedProc);
+
return 0;
}
#endif /* CONFIG_PPC_PSERIES */
-
-static ssize_t lparcfg_read(struct file *file, char *buf,
- size_t count, loff_t *ppos)
-{
- struct proc_dir_entry *dp = PDE(file->f_dentry->d_inode);
- unsigned long *data = (unsigned long *)dp->data;
- unsigned long p;
- ssize_t read;
- char * pnt;
-
- if (!data) {
- printk(KERN_ERR "lparcfg: read failed no data\n");
- return -EIO;
- }
-
- if(ppos) {
- p = *ppos;
- } else {
- return -EFAULT;
- }
-
- if (p >= LPARCFG_BUFF_SIZE) return 0;
-
- lparcfg_data((unsigned char *)data, LPARCFG_BUFF_SIZE);
- if (count > (strlen((char *)data) - p))
- count = (strlen((char *)data)) - p;
- read = 0;
-
- pnt = (char *)(data) + p;
- copy_to_user(buf, (void *)pnt, count);
- read += count;
- *ppos += read;
- return read;
-}
-
static int lparcfg_open(struct inode * inode, struct file * file)
{
- struct proc_dir_entry *dp = PDE(file->f_dentry->d_inode);
- unsigned int *data = (unsigned int *)dp->data;
-
- if (!data) {
- printk(KERN_ERR "lparcfg: open failed no data\n");
- return -EIO;
- }
-
- return 0;
+ return single_open(file,lparcfg_data,NULL);
}
struct file_operations lparcfg_fops = {
owner: THIS_MODULE,
- read: lparcfg_read,
+ read: seq_read,
open: lparcfg_open,
+ release: single_release,
};
int __init lparcfg_init(void)
git://git.onelab.eu / linux-2.6.git / blobdiff