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Rate-limit error logging to 5 lines per second, so that when an sdcard

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goes bad it doesn't lock up the console with continuous output.
This commit is contained in:
Ian Lepore 2015-01-11 20:55:16 +00:00
parent f8f02928d3
commit 5e3dbf8b9f
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=277026
1 changed files with 9 additions and 2 deletions
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11
sys/dev/mmc/mmcsd.c
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@ -64,6 +64,7 @@ __FBSDID("$FreeBSD$");
#include <sys/malloc.h>
#include <sys/module.h>
#include <sys/mutex.h>
#include <sys/time.h>
#include <geom/geom_disk.h>
#include <dev/mmc/mmcbrvar.h>
@ -86,6 +87,8 @@ struct mmcsd_softc {
daddr_t eblock, eend; /* Range remaining after the last erase. */
int running;
int suspend;
int log_count;
struct timeval log_time;
};
static const char *errmsg[] =
@ -99,6 +102,8 @@ static const char *errmsg[] =
"NO MEMORY"
};
#define LOG_PPS 5 /* Log no more than 5 errors per second. */
/* bus entry points */
static int mmcsd_attach(device_t dev);
static int mmcsd_detach(device_t dev);
@ -389,8 +394,10 @@ mmcsd_rw(struct mmcsd_softc *sc, struct bio *bp)
}
MMCBUS_WAIT_FOR_REQUEST(mmcbr, dev, &req);
if (req.cmd->error != MMC_ERR_NONE) {
device_printf(dev, "Error indicated: %d %s\n",
req.cmd->error, mmcsd_errmsg(req.cmd->error));
if (ppsratecheck(&sc->log_time, &sc->log_count, LOG_PPS)) {
device_printf(dev, "Error indicated: %d %s\n",
req.cmd->error, mmcsd_errmsg(req.cmd->error));
}
break;
}
block += numblocks;