[S390] appldata enhancements.
Add CPU ID and steal time, and make OS record size variable.
Signed-off-by: Gerald Schaefer <geraldsc@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
diff --git a/arch/s390/appldata/appldata_os.c b/arch/s390/appldata/appldata_os.c
index 99ddd3b..f2b44a2 100644
--- a/arch/s390/appldata/appldata_os.c
+++ b/arch/s390/appldata/appldata_os.c
@@ -4,9 +4,9 @@
* Data gathering module for Linux-VM Monitor Stream, Stage 1.
* Collects misc. OS related data (CPU utilization, running processes).
*
- * Copyright (C) 2003 IBM Corporation, IBM Deutschland Entwicklung GmbH.
+ * Copyright (C) 2003,2006 IBM Corporation, IBM Deutschland Entwicklung GmbH.
*
- * Author: Gerald Schaefer <geraldsc@de.ibm.com>
+ * Author: Gerald Schaefer <gerald.schaefer@de.ibm.com>
*/
#include <linux/config.h>
@@ -44,11 +44,14 @@
u32 per_cpu_system; /* ... spent in kernel mode */
u32 per_cpu_idle; /* ... spent in idle mode */
-// New in 2.6 -->
+ /* New in 2.6 */
u32 per_cpu_irq; /* ... spent in interrupts */
u32 per_cpu_softirq; /* ... spent in softirqs */
u32 per_cpu_iowait; /* ... spent while waiting for I/O */
-// <-- New in 2.6
+
+ /* New in modification level 01 */
+ u32 per_cpu_steal; /* ... stolen by hypervisor */
+ u32 cpu_id; /* number of this CPU */
} __attribute__((packed));
struct appldata_os_data {
@@ -68,10 +71,9 @@
u32 avenrun[3]; /* average nr. of running processes during */
/* the last 1, 5 and 15 minutes */
-// New in 2.6 -->
+ /* New in 2.6 */
u32 nr_iowait; /* number of blocked threads
(waiting for I/O) */
-// <-- New in 2.6
/* per cpu data */
struct appldata_os_per_cpu os_cpu[0];
@@ -79,6 +81,14 @@
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,
+ .mod_lvl = {0xF0, 0xF1}, /* EBCDIC "01" */
+};
+
static inline void appldata_print_debug(struct appldata_os_data *os_data)
{
@@ -100,15 +110,17 @@
P_DEBUG("nr_cpus = %u\n", os_data->nr_cpus);
for (i = 0; i < os_data->nr_cpus; i++) {
P_DEBUG("cpu%u : user = %u, nice = %u, system = %u, "
- "idle = %u, irq = %u, softirq = %u, iowait = %u\n",
- i,
+ "idle = %u, irq = %u, softirq = %u, iowait = %u, "
+ "steal = %u\n",
+ os_data->os_cpu[i].cpu_id,
os_data->os_cpu[i].per_cpu_user,
os_data->os_cpu[i].per_cpu_nice,
os_data->os_cpu[i].per_cpu_system,
os_data->os_cpu[i].per_cpu_idle,
os_data->os_cpu[i].per_cpu_irq,
os_data->os_cpu[i].per_cpu_softirq,
- os_data->os_cpu[i].per_cpu_iowait);
+ os_data->os_cpu[i].per_cpu_iowait,
+ os_data->os_cpu[i].per_cpu_steal);
}
P_DEBUG("sync_count_1 = %u\n", os_data->sync_count_1);
@@ -123,14 +135,13 @@
*/
static void appldata_get_os_data(void *data)
{
- int i, j;
+ int i, j, rc;
struct appldata_os_data *os_data;
+ unsigned int new_size;
os_data = data;
os_data->sync_count_1++;
- os_data->nr_cpus = num_online_cpus();
-
os_data->nr_threads = nr_threads;
os_data->nr_running = nr_running();
os_data->nr_iowait = nr_iowait();
@@ -154,9 +165,44 @@
cputime_to_jiffies(kstat_cpu(i).cpustat.softirq);
os_data->os_cpu[j].per_cpu_iowait =
cputime_to_jiffies(kstat_cpu(i).cpustat.iowait);
+ os_data->os_cpu[j].per_cpu_steal =
+ cputime_to_jiffies(kstat_cpu(i).cpustat.steal);
+ os_data->os_cpu[j].cpu_id = i;
j++;
}
+ os_data->nr_cpus = j;
+
+ new_size = sizeof(struct appldata_os_data) +
+ (os_data->nr_cpus * sizeof(struct appldata_os_per_cpu));
+ if (ops.size != new_size) {
+ if (ops.active) {
+ rc = appldata_diag(APPLDATA_RECORD_OS_ID,
+ APPLDATA_START_INTERVAL_REC,
+ (unsigned long) ops.data, new_size,
+ ops.mod_lvl);
+ if (rc != 0) {
+ P_ERROR("os: START NEW DIAG 0xDC failed, "
+ "return code: %d, new size = %i\n", rc,
+ new_size);
+ P_INFO("os: stopping old record now\n");
+ } else
+ P_INFO("os: new record size = %i\n", new_size);
+
+ rc = appldata_diag(APPLDATA_RECORD_OS_ID,
+ APPLDATA_STOP_REC,
+ (unsigned long) ops.data, ops.size,
+ ops.mod_lvl);
+ if (rc != 0)
+ P_ERROR("os: STOP OLD DIAG 0xDC failed, "
+ "return code: %d, old size = %i\n", rc,
+ ops.size);
+ else
+ P_INFO("os: old record size = %i stopped\n",
+ ops.size);
+ }
+ ops.size = new_size;
+ }
os_data->timestamp = get_clock();
os_data->sync_count_2++;
#ifdef APPLDATA_DEBUG
@@ -165,15 +211,6 @@
}
-static struct appldata_ops ops = {
- .ctl_nr = CTL_APPLDATA_OS,
- .name = "os",
- .record_nr = APPLDATA_RECORD_OS_ID,
- .callback = &appldata_get_os_data,
- .owner = THIS_MODULE,
-};
-
-
/*
* appldata_os_init()
*
@@ -181,26 +218,25 @@
*/
static int __init appldata_os_init(void)
{
- int rc, size;
+ int rc, max_size;
- size = sizeof(struct appldata_os_data) +
- (NR_CPUS * sizeof(struct appldata_os_per_cpu));
- if (size > APPLDATA_MAX_REC_SIZE) {
- P_ERROR("Size of record = %i, bigger than maximum (%i)!\n",
- size, APPLDATA_MAX_REC_SIZE);
+ max_size = sizeof(struct appldata_os_data) +
+ (NR_CPUS * sizeof(struct appldata_os_per_cpu));
+ if (max_size > APPLDATA_MAX_REC_SIZE) {
+ P_ERROR("Max. size of OS record = %i, bigger than maximum "
+ "record size (%i)\n", max_size, APPLDATA_MAX_REC_SIZE);
rc = -ENOMEM;
goto out;
}
- P_DEBUG("sizeof(os) = %i, sizeof(os_cpu) = %lu\n", size,
+ P_DEBUG("max. sizeof(os) = %i, sizeof(os_cpu) = %lu\n", max_size,
sizeof(struct appldata_os_per_cpu));
- appldata_os_data = kmalloc(size, GFP_DMA);
+ appldata_os_data = kzalloc(max_size, GFP_DMA);
if (appldata_os_data == NULL) {
P_ERROR("No memory for %s!\n", ops.name);
rc = -ENOMEM;
goto out;
}
- memset(appldata_os_data, 0, size);
appldata_os_data->per_cpu_size = sizeof(struct appldata_os_per_cpu);
appldata_os_data->cpu_offset = offsetof(struct appldata_os_data,
@@ -208,7 +244,7 @@
P_DEBUG("cpu offset = %u\n", appldata_os_data->cpu_offset);
ops.data = appldata_os_data;
- ops.size = size;
+ ops.callback = &appldata_get_os_data;
rc = appldata_register_ops(&ops);
if (rc != 0) {
P_ERROR("Error registering ops, rc = %i\n", rc);