Author: mav
Date: Sat Oct 12 19:03:07 2019
New Revision: 353454
URL: https://svnweb.freebsd.org/changeset/base/353454
Log:
Allocate device softc from the device domain.
Since we are trying to bind device interrupt threads to the device domain,
it should have sense to make memory often accessed by them local. If domain
is not known, fall back to round-robin.
MFC after: 2 weeks
Sponsored by: iXsystems, Inc.
Modified:
head/sys/kern/subr_bus.c
Modified: head/sys/kern/subr_bus.c
==============================================================================
--- head/sys/kern/subr_bus.c Sat Oct 12 18:18:11 2019 (r353453)
+++ head/sys/kern/subr_bus.c Sat Oct 12 19:03:07 2019 (r353454)
@@ -34,6 +34,7 @@ __FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/conf.h>
+#include <sys/domainset.h>
#include <sys/eventhandler.h>
#include <sys/filio.h>
#include <sys/lock.h>
@@ -2541,7 +2542,7 @@ void
device_set_softc(device_t dev, void *softc)
{
if (dev->softc && !(dev->flags & DF_EXTERNALSOFTC))
- free(dev->softc, M_BUS_SC);
+ free_domain(dev->softc, M_BUS_SC);
dev->softc = softc;
if (dev->softc)
dev->flags |= DF_EXTERNALSOFTC;
@@ -2558,7 +2559,7 @@ device_set_softc(device_t dev, void *softc)
void
device_free_softc(void *softc)
{
- free(softc, M_BUS_SC);
+ free_domain(softc, M_BUS_SC);
}
/**
@@ -2817,6 +2818,9 @@ device_is_devclass_fixed(device_t dev)
int
device_set_driver(device_t dev, driver_t *driver)
{
+ int domain;
+ struct domainset *policy;
+
if (dev->state >= DS_ATTACHED)
return (EBUSY);
@@ -2824,7 +2828,7 @@ device_set_driver(device_t dev, driver_t *driver)
return (0);
if (dev->softc && !(dev->flags & DF_EXTERNALSOFTC)) {
- free(dev->softc, M_BUS_SC);
+ free_domain(dev->softc, M_BUS_SC);
dev->softc = NULL;
}
device_set_desc(dev, NULL);
@@ -2833,8 +2837,12 @@ device_set_driver(device_t dev, driver_t *driver)
if (driver) {
kobj_init((kobj_t) dev, (kobj_class_t) driver);
if (!(dev->flags & DF_EXTERNALSOFTC) && driver->size > 0) {
- dev->softc = malloc(driver->size, M_BUS_SC,
- M_NOWAIT | M_ZERO);
+ if (bus_get_domain(dev, &domain) == 0)
+ policy = DOMAINSET_PREF(domain);
+ else
+ policy = DOMAINSET_RR();
+ dev->softc = malloc_domainset(driver->size, M_BUS_SC,
+ policy, M_NOWAIT | M_ZERO);
if (!dev->softc) {
kobj_delete((kobj_t) dev, NULL);
kobj_init((kobj_t) dev, &null_class);
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