Commit 096846e2 authored by Arthur Jones's avatar Arthur Jones Committed by Linus Torvalds
Browse files

edac: core fix workq timer

When updating the edac_mc_poll_msec module parameter from the sysfs
/sys/module/edac_core/parameters/edac_mc_poll_msec file, we don't update
the workq timers.  So that, if we move from a big poll time to a small
one, the small one won't take effect until the big one has timed out.

Here we provide a new module parameter set method to call out to the
update routine.  This brings the /sys/module/edac_core/parameters
functionality up to that provided by the /sys/drivers/system/edac/mc sysfs
module parameter files so that we can remove them or at least link to the
/sys/module files...
Signed-off-by: default avatarArthur Jones <>
Signed-off-by: default avatarDoug Thompson <>
Signed-off-by: default avatarAndrew Morton <>
Signed-off-by: default avatarLinus Torvalds <>
parent 14cc571b
......@@ -44,6 +44,25 @@ int edac_mc_get_poll_msec(void)
return edac_mc_poll_msec;
static int edac_set_poll_msec(const char *val, struct kernel_param *kp)
long l;
int ret;
if (!val)
return -EINVAL;
ret = strict_strtol(val, 0, &l);
if (ret == -EINVAL || ((int)l != l))
return -EINVAL;
*((int *)kp->arg) = l;
/* notify edac_mc engine to reset the poll period */
return 0;
/* Parameter declarations for above */
module_param(edac_mc_panic_on_ue, int, 0644);
MODULE_PARM_DESC(edac_mc_panic_on_ue, "Panic on uncorrected error: 0=off 1=on");
......@@ -53,7 +72,8 @@ MODULE_PARM_DESC(edac_mc_log_ue,
module_param(edac_mc_log_ce, int, 0644);
"Log correctable error to console: 0=off 1=on");
module_param(edac_mc_poll_msec, int, 0644);
module_param_call(edac_mc_poll_msec, edac_set_poll_msec, param_get_int,
&edac_mc_poll_msec, 0644);
MODULE_PARM_DESC(edac_mc_poll_msec, "Polling period in milliseconds");
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