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[POWERPC] pseries: Simplify rtasd initialization

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Simplify rtasd initialization code; this also fixes a buglet,
where the /proc entries weren't being cleaned up in case of
failure.

Signed-off-by: Linas Vepstas <linas@austin.ibm.com>

----
 arch/powerpc/platforms/pseries/rtasd.c |   53 +++++++++++----------------------
 1 file changed, 19 insertions(+), 34 deletions(-)
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Linas Vepstas 2007-08-09 06:03:37 +10:00 committed by Paul Mackerras
parent ba28cc0931
commit 4511dad42a
1 changed files with 19 additions and 34 deletions
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53
arch/powerpc/platforms/pseries/rtasd.c
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@ -64,8 +64,6 @@ volatile int error_log_cnt = 0;
*/
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",
@ -169,9 +167,9 @@ static int log_rtas_len(char * buf)
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;
@ -359,22 +357,6 @@ static int enable_surveillance(int timeout)
return -1;
}
static int get_eventscan_parms(void)
{
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\n");
return -1;
}
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);
return 0;
}
static void do_event_scan(void)
{
int error;
@ -424,22 +406,11 @@ static int rtasd(void *unused)
daemonize("rtasd");
if (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);
/* We can use rtas_log_buf now */
@ -466,8 +437,6 @@ static int rtasd(void *unused)
for (;;)
do_event_scan_all_cpus(30000/rtas_event_scan_rate);
error:
/* Should delete proc entries */
return -EINVAL;
}
@ -485,6 +454,22 @@ static int __init rtas_init(void)
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;