[PATCH 3/6] pseries: simplify rtasd initialization
From: Linas Vepstas <hidden>
Date: 2007-08-08 20:03:44
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 <redacted> ---- arch/powerpc/platforms/pseries/rtasd.c | 53 +++++++++++---------------------- 1 file changed, 19 insertions(+), 34 deletions(-) Index: linux-2.6.22-git2/arch/powerpc/platforms/pseries/rtasd.c ===================================================================
--- linux-2.6.22-git2.orig/arch/powerpc/platforms/pseries/rtasd.c 2007-08-08 12:19:47.000000000 -0500
+++ linux-2.6.22-git2/arch/powerpc/platforms/pseries/rtasd.c 2007-08-08 12:20:44.000000000 -0500@@ -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 timeo 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;