AutoPage Migration - ia64 check/notify internode migration
NOTE: not recently tested on ia64
This patch hooks the check for task memory migration pending
into the ia64 do_notify_resume() function. Call to
check_migrate_pending() is a no-op if automigration is not
configured.
TODO: reconcile automigration and trace use of 'NOTIFY_RESUME
Signed-off-by: Lee Schermerhorn <lee.schermerhorn@xxxxxx>
arch/ia64/kernel/process.c | 9 +++++++++
1 file changed, 9 insertions(+)
Index: linux-2.6.36-mmotm-101103-1217/arch/ia64/kernel/process.c
===================================================================
--- linux-2.6.36-mmotm-101103-1217.orig/arch/ia64/kernel/process.c
+++ linux-2.6.36-mmotm-101103-1217/arch/ia64/kernel/process.c
@@ -29,6 +29,7 @@
#include <linux/kdebug.h>
#include <linux/utsname.h>
#include <linux/tracehook.h>
+#include <linux/auto-migrate.h>
#include <asm/cpu.h>
#include <asm/delay.h>
@@ -193,12 +194,20 @@ do_notify_resume_user(sigset_t *unused,
pfm_handle_work();
#endif
+ /*
+ * check for task memory migration before delivering
+ * signals so that hander[s] use memory in new node.
+ */
+ check_migrate_pending();
+
/* deal with pending signal delivery */
if (test_thread_flag(TIF_SIGPENDING)) {
local_irq_enable(); /* force interrupt enable */
ia64_do_signal(scr, in_syscall);
}
+//TODO: make sure tracehook_notify_resume() is NO-OP if not enabled
+// by something other than TIF_NOTIFY_RESUME which is general flag.
if (test_thread_flag(TIF_NOTIFY_RESUME)) {
clear_thread_flag(TIF_NOTIFY_RESUME);
tracehook_notify_resume(&scr->pt);
--
To unsubscribe from this list: send the line "unsubscribe linux-numa" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
