Document a few sysctls.

Approved by:	imp

2 files changed, 7 insertions, 5 deletions

diff --git a/sys/mips/mips/machdep.c b/sys/mips/mips/machdep.c
index 28d1fb3..03cc86a 100644
--- a/sys/mips/mips/machdep.c
+++ b/sys/mips/mips/machdep.c
@@ -236,22 +236,23 @@ sysctl_machdep_adjkerntz(SYSCTL_HANDLER_ARGS)
 }
 
 SYSCTL_PROC(_machdep, CPU_ADJKERNTZ, adjkerntz, CTLTYPE_INT | CTLFLAG_RW,
-    &adjkerntz, 0, sysctl_machdep_adjkerntz, "I", "");
+    &adjkerntz, 0, sysctl_machdep_adjkerntz, "I",
+    "Local offset from GMT in seconds");
 #endif	/* PORT_TO_JMIPS */
 
 #ifdef PORT_TO_JMIPS
 /* art */
 SYSCTL_INT(_machdep, CPU_DISRTCSET, disable_rtc_set, CTLFLAG_RW,
-    &disable_rtc_set, 0, "");
+    &disable_rtc_set, 0, "Disable setting the real time clock to system time");
 #endif	/* PORT_TO_JMIPS */
 
 SYSCTL_STRUCT(_machdep, CPU_BOOTINFO, bootinfo, CTLFLAG_RD, &bootinfo,
-    bootinfo, "");
+    bootinfo, "Bootinfo struct: kernel filename, BIOS harddisk geometry, etc");
 
 #ifdef PORT_TO_JMIPS
 /* dchu */
 SYSCTL_INT(_machdep, CPU_WALLCLOCK, wall_cmos_clock, CTLFLAG_RW,
-    &wall_cmos_clock, 0, "");
+    &wall_cmos_clock, 0, "Wall CMOS clock assumed");
 #endif	/* PORT_TO_JMIPS */
 
 /*
diff --git a/sys/mips/mips/tick.c b/sys/mips/mips/tick.c
index 0f8ba26..faae90e 100644
--- a/sys/mips/mips/tick.c
+++ b/sys/mips/mips/tick.c
@@ -186,7 +186,8 @@ sysctl_machdep_counter_freq(SYSCTL_HANDLER_ARGS)
 }
 
 SYSCTL_PROC(_machdep, OID_AUTO, counter_freq, CTLTYPE_QUAD | CTLFLAG_RW,
-    0, sizeof(u_int), sysctl_machdep_counter_freq, "IU", "");
+    0, sizeof(u_int), sysctl_machdep_counter_freq, "IU",
+    "Timecounter frequency in Hz");
 
 static unsigned
 counter_get_timecount(struct timecounter *tc)