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[POWERPC] pseries: Fix jumbled no_logging flag 

Get rid of the jumbled usage of the no_logging flag. Its use
spans several directories, and is incorrectly/misleadingly
documented. Instead, two changes:
1) nvram will accept error log as soon as its ready.
2) logging to nvram stops on the first fatal error reported.

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

----
 arch/powerpc/kernel/nvram_64.c         |    8 --------
 arch/powerpc/platforms/pseries/rtasd.c |   14 ++++++--------
 2 files changed, 6 insertions(+), 16 deletions(-)
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Linas Vepstas 2007-08-09 06:06:15 +10:00 committed by Paul Mackerras
parent 72755f4407
commit 79c0108d1b
2 changed files with 6 additions and 16 deletions
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8
arch/powerpc/kernel/nvram_64.c
View File

@ -38,10 +38,6 @@ static struct nvram_partition * nvram_part;
static long nvram_error_log_index = -1;
static long nvram_error_log_size = 0;
int no_logging = 1; /* Until we initialize everything,
* make sure we don't try logging
* anything */
extern volatile int error_log_cnt;
struct err_log_info {
@ -637,10 +633,6 @@ int nvram_write_error_log(char * buff, int length, unsigned int err_type)
loff_t tmp_index;
struct err_log_info info;
if (no_logging) {
return -EPERM;
}
if (nvram_error_log_index == -1) {
return -ESPIPE;
}

14
arch/powerpc/platforms/pseries/rtasd.c
View File

@ -53,7 +53,8 @@ static unsigned int rtas_event_scan_rate;
static int full_rtas_msgs = 0;
extern int no_logging;
/* Stop logging to nvram after first fatal error */
static int no_more_logging;
volatile int error_log_cnt = 0;
@ -216,7 +217,7 @@ void pSeries_log_error(char *buf, unsigned int err_type, int fatal)
}
/* Write error to NVRAM */
if (!no_logging && !(err_type & ERR_FLAG_BOOT))
if (!no_more_logging && !(err_type & ERR_FLAG_BOOT))
nvram_write_error_log(buf, len, err_type);
/*
@ -228,8 +229,8 @@ void pSeries_log_error(char *buf, unsigned int err_type, int fatal)
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 || no_more_logging) {
no_more_logging = 1;
spin_unlock_irqrestore(&rtasd_log_lock, s);
return;
}
@ -301,7 +302,7 @@ static ssize_t rtas_log_read(struct file * file, char __user * buf,
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 && !no_more_logging)
nvram_clear_error_log();
spin_unlock_irqrestore(&rtasd_log_lock, s);
@ -413,9 +414,6 @@ static int rtasd(void *unused)
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 */
no_logging = 0;
if (!rc) {
if (err_type != ERR_FLAG_ALREADY_LOGGED) {
pSeries_log_error(logdata, err_type | ERR_FLAG_BOOT, 0);