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authorMark Johnston <markj@FreeBSD.org>2018-09-24 19:24:17 +0000
committerMark Johnston <markj@FreeBSD.org>2018-09-24 19:24:17 +0000
commit463406ac4a531b8f4c6102715c17da6183d10be3 (patch)
tree6ba8a52b11415edc92ffae0f76bb753ae51b9cb3 /sys/sys/vmmeter.h
parent7362ac9ca95598c2715ea3fe8f25231cf3ce104f (diff)
downloadsrc-463406ac4a531b8f4c6102715c17da6183d10be3.tar.gz
src-463406ac4a531b8f4c6102715c17da6183d10be3.zip
Add more NUMA-specific low memory predicates.
Use these predicates instead of inline references to vm_min_domains. Also add a global all_domains set, akin to all_cpus. Reviewed by: alc, jeff, kib Approved by: re (gjb) Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D17278
Notes
Notes: svn path=/head/; revision=338919
Diffstat (limited to 'sys/sys/vmmeter.h')
-rw-r--r--sys/sys/vmmeter.h28
1 files changed, 25 insertions, 3 deletions
diff --git a/sys/sys/vmmeter.h b/sys/sys/vmmeter.h
index c41b151fa502..579d16756e99 100644
--- a/sys/sys/vmmeter.h
+++ b/sys/sys/vmmeter.h
@@ -145,6 +145,7 @@ struct vmmeter {
#include <sys/domainset.h>
extern struct vmmeter vm_cnt;
+extern domainset_t all_domains;
extern domainset_t vm_min_domains;
extern domainset_t vm_severe_domains;
@@ -177,7 +178,7 @@ vm_wire_count(void)
/*
* Return TRUE if we are under our severe low-free-pages threshold
*
- * This routine is typically used at the user<->system interface to determine
+ * These routines are typically used at the user<->system interface to determine
* whether we need to block in order to avoid a low memory deadlock.
*/
static inline int
@@ -188,7 +189,14 @@ vm_page_count_severe(void)
}
static inline int
-vm_page_count_severe_set(domainset_t *mask)
+vm_page_count_severe_domain(int domain)
+{
+
+ return (DOMAINSET_ISSET(domain, &vm_severe_domains));
+}
+
+static inline int
+vm_page_count_severe_set(const domainset_t *mask)
{
return (DOMAINSET_SUBSET(&vm_severe_domains, mask));
@@ -197,7 +205,7 @@ vm_page_count_severe_set(domainset_t *mask)
/*
* Return TRUE if we are under our minimum low-free-pages threshold.
*
- * This routine is typically used within the system to determine whether
+ * These routines are typically used within the system to determine whether
* we can execute potentially very expensive code in terms of memory. It
* is also used by the pageout daemon to calculate when to sleep, when
* to wake waiters up, and when (after making a pass) to become more
@@ -210,5 +218,19 @@ vm_page_count_min(void)
return (!DOMAINSET_EMPTY(&vm_min_domains));
}
+static inline int
+vm_page_count_min_domain(int domain)
+{
+
+ return (DOMAINSET_ISSET(domain, &vm_min_domains));
+}
+
+static inline int
+vm_page_count_min_set(const domainset_t *mask)
+{
+
+ return (DOMAINSET_SUBSET(&vm_min_domains, mask));
+}
+
#endif /* _KERNEL */
#endif /* _SYS_VMMETER_H_ */