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author | ian <ian@FreeBSD.org> | 2014-05-13 18:08:15 +0000 |
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committer | ian <ian@FreeBSD.org> | 2014-05-13 18:08:15 +0000 |
commit | 0c0ccc18b558b64b51e095ffa5f7841077e706a3 (patch) | |
tree | 89d2636497526e9d7255fc658dd759282226ce13 /sys/powerpc | |
parent | 399f18336611368662b09e65882f98bf17a5587a (diff) | |
download | FreeBSD-src-0c0ccc18b558b64b51e095ffa5f7841077e706a3.zip FreeBSD-src-0c0ccc18b558b64b51e095ffa5f7841077e706a3.tar.gz |
MFC r257093:
Be a little more suspicious of thermal sensors, which can have single
crazy readings occasionally. One wild reading should not be enough to
trigger a shutdown, so instead wait for several concerning readings in
a row.
Diffstat (limited to 'sys/powerpc')
-rw-r--r-- | sys/powerpc/powermac/powermac_thermal.c | 31 |
1 files changed, 24 insertions, 7 deletions
diff --git a/sys/powerpc/powermac/powermac_thermal.c b/sys/powerpc/powermac/powermac_thermal.c index db0611a..8b9462c 100644 --- a/sys/powerpc/powermac/powermac_thermal.c +++ b/sys/powerpc/powermac/powermac_thermal.c @@ -68,6 +68,8 @@ struct pmac_fan_le { struct pmac_sens_le { struct pmac_therm *sensor; int last_val; +#define MAX_CRITICAL_COUNT 6 + int critical_count; SLIST_ENTRY(pmac_sens_le) entries; }; static SLIST_HEAD(pmac_fans, pmac_fan_le) fans = SLIST_HEAD_INITIALIZER(fans); @@ -106,14 +108,27 @@ pmac_therm_manage_fans(void) sensor->last_val = temp; if (sensor->last_val > sensor->sensor->max_temp) { + sensor->critical_count++; printf("WARNING: Current temperature (%s: %d.%d C) " - "exceeds critical temperature (%d.%d C)! " - "Shutting down!\n", sensor->sensor->name, - (sensor->last_val - ZERO_C_TO_K) / 10, - (sensor->last_val - ZERO_C_TO_K) % 10, - (sensor->sensor->max_temp - ZERO_C_TO_K) / 10, - (sensor->sensor->max_temp - ZERO_C_TO_K) % 10); - shutdown_nice(RB_POWEROFF); + "exceeds critical temperature (%d.%d C); " + "count=%d\n", + sensor->sensor->name, + (sensor->last_val - ZERO_C_TO_K) / 10, + (sensor->last_val - ZERO_C_TO_K) % 10, + (sensor->sensor->max_temp - ZERO_C_TO_K) / 10, + (sensor->sensor->max_temp - ZERO_C_TO_K) % 10, + sensor->critical_count); + if (sensor->critical_count >= MAX_CRITICAL_COUNT) { + printf("WARNING: %s temperature exceeded " + "critical temperature %d times in a row; " + "shutting down!\n", + sensor->sensor->name, + sensor->critical_count); + shutdown_nice(RB_POWEROFF); + } + } else { + if (sensor->critical_count > 0) + sensor->critical_count--; } } @@ -177,6 +192,8 @@ pmac_thermal_sensor_register(struct pmac_therm *sensor) list_entry = malloc(sizeof(struct pmac_sens_le), M_PMACTHERM, M_ZERO | M_WAITOK); list_entry->sensor = sensor; + list_entry->last_val = 0; + list_entry->critical_count = 0; SLIST_INSERT_HEAD(&sensors, list_entry, entries); } |