static unsigned long rtas_log_size;
static int surveillance_timeout = -1;
-static unsigned int rtas_event_scan_rate;
static unsigned int rtas_error_log_max;
static unsigned int rtas_error_log_buffer_max;
-static int full_rtas_msgs = 0;
+/* RTAS service tokens */
+static unsigned int event_scan;
+static unsigned int rtas_event_scan_rate;
-extern int no_logging;
+static int full_rtas_msgs = 0;
-volatile int error_log_cnt = 0;
+/* Stop logging to nvram after first fatal error */
+static int logging_enabled; /* Until we initialize everything,
+ * make sure we don't try logging
+ * anything */
+static int error_log_cnt;
/*
* Since we use 32 bit RTAS, the physical address of this must be below
*/
static unsigned char logdata[RTAS_ERROR_LOG_MAX];
-static int get_eventscan_parms(void);
-
static char *rtas_type[] = {
"Unknown", "Retry", "TCE Error", "Internal Device Failure",
"Timeout", "Data Parity", "Address Parity", "Cache Parity",
len += err->extended_log_length;
}
- if (rtas_error_log_max == 0) {
- get_eventscan_parms();
- }
+ if (rtas_error_log_max == 0)
+ rtas_error_log_max = rtas_get_error_log_max();
+
if (len > rtas_error_log_max)
len = rtas_error_log_max;
}
/* Write error to NVRAM */
- if (!no_logging && !(err_type & ERR_FLAG_BOOT))
- nvram_write_error_log(buf, len, err_type);
+ if (logging_enabled && !(err_type & ERR_FLAG_BOOT))
+ nvram_write_error_log(buf, len, err_type, error_log_cnt);
/*
* rtas errors can occur during boot, and we do want to capture
printk_log_rtas(buf, len);
/* Check to see if we need to or have stopped logging */
- if (fatal || no_logging) {
- no_logging = 1;
+ if (fatal || !logging_enabled) {
+ logging_enabled = 0;
spin_unlock_irqrestore(&rtasd_log_lock, s);
return;
}
spin_lock_irqsave(&rtasd_log_lock, s);
/* if it's 0, then we know we got the last one (the one in NVRAM) */
- if (rtas_log_size == 0 && !no_logging)
+ if (rtas_log_size == 0 && logging_enabled)
nvram_clear_error_log();
spin_unlock_irqrestore(&rtasd_log_lock, s);
return 0;
}
-struct file_operations proc_rtas_log_operations = {
+const struct file_operations proc_rtas_log_operations = {
.read = rtas_log_read,
.poll = rtas_log_poll,
.open = rtas_log_open,
return -1;
}
-static int get_eventscan_parms(void)
-{
- struct device_node *node;
- const int *ip;
-
- node = of_find_node_by_path("/rtas");
-
- ip = get_property(node, "rtas-event-scan-rate", NULL);
- if (ip == NULL) {
- printk(KERN_ERR "rtasd: no rtas-event-scan-rate\n");
- of_node_put(node);
- return -1;
- }
- rtas_event_scan_rate = *ip;
- DEBUG("rtas-event-scan-rate %d\n", rtas_event_scan_rate);
-
- /* Make room for the sequence number */
- rtas_error_log_max = rtas_get_error_log_max();
- rtas_error_log_buffer_max = rtas_error_log_max + sizeof(int);
-
- of_node_put(node);
-
- return 0;
-}
-
-static void do_event_scan(int event_scan)
+static void do_event_scan(void)
{
int error;
do {
{
int cpu;
- lock_cpu_hotplug();
+ get_online_cpus();
cpu = first_cpu(cpu_online_map);
for (;;) {
set_cpus_allowed(current, cpumask_of_cpu(cpu));
- do_event_scan(rtas_token("event-scan"));
+ do_event_scan();
set_cpus_allowed(current, CPU_MASK_ALL);
/* Drop hotplug lock, and sleep for the specified delay */
- unlock_cpu_hotplug();
+ put_online_cpus();
msleep_interruptible(delay);
- lock_cpu_hotplug();
+ get_online_cpus();
cpu = next_cpu(cpu, cpu_online_map);
if (cpu == NR_CPUS)
break;
}
- unlock_cpu_hotplug();
+ put_online_cpus();
}
static int rtasd(void *unused)
{
unsigned int err_type;
- int event_scan = rtas_token("event-scan");
int rc;
daemonize("rtasd");
- if (event_scan == RTAS_UNKNOWN_SERVICE || get_eventscan_parms() == -1)
- goto error;
-
- rtas_log_buf = vmalloc(rtas_error_log_buffer_max*LOG_NUMBER);
- if (!rtas_log_buf) {
- printk(KERN_ERR "rtasd: no memory\n");
- goto error;
- }
-
printk(KERN_DEBUG "RTAS daemon started\n");
-
DEBUG("will sleep for %d milliseconds\n", (30000/rtas_event_scan_rate));
/* See if we have any error stored in NVRAM */
memset(logdata, 0, rtas_error_log_max);
-
- rc = nvram_read_error_log(logdata, rtas_error_log_max, &err_type);
-
+ rc = nvram_read_error_log(logdata, rtas_error_log_max,
+ &err_type, &error_log_cnt);
/* We can use rtas_log_buf now */
- no_logging = 0;
+ logging_enabled = 1;
if (!rc) {
if (err_type != ERR_FLAG_ALREADY_LOGGED) {
for (;;)
do_event_scan_all_cpus(30000/rtas_event_scan_rate);
-error:
- /* Should delete proc entries */
return -EINVAL;
}
return 0;
/* No RTAS */
- if (rtas_token("event-scan") == RTAS_UNKNOWN_SERVICE) {
+ event_scan = rtas_token("event-scan");
+ if (event_scan == RTAS_UNKNOWN_SERVICE) {
printk(KERN_DEBUG "rtasd: no event-scan on system\n");
return -ENODEV;
}
+ rtas_event_scan_rate = rtas_token("rtas-event-scan-rate");
+ if (rtas_event_scan_rate == RTAS_UNKNOWN_SERVICE) {
+ printk(KERN_ERR "rtasd: no rtas-event-scan-rate on system\n");
+ return -ENODEV;
+ }
+
+ /* Make room for the sequence number */
+ rtas_error_log_max = rtas_get_error_log_max();
+ rtas_error_log_buffer_max = rtas_error_log_max + sizeof(int);
+
+ rtas_log_buf = vmalloc(rtas_error_log_buffer_max*LOG_NUMBER);
+ if (!rtas_log_buf) {
+ printk(KERN_ERR "rtasd: no memory\n");
+ return -ENOMEM;
+ }
+
entry = create_proc_entry("ppc64/rtas/error_log", S_IRUSR, NULL);
if (entry)
entry->proc_fops = &proc_rtas_log_operations;
projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / blobdiff