[Xen-changelog] Fix zeroing of some counters and add a couple more

[Xen patchbot -unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User djm@xxxxxxxxxxxxxxx
# Node ID d0a1154755c95ffdb4455a81a72dc746a845ca97
# Parent  ca44d2dbb273b4a9388b067fc16a0a38fc463a92

Fix zeroing of some counters and add a couple more

diff -r ca44d2dbb273 -r d0a1154755c9 xen/arch/ia64/hypercall.c
--- a/xen/arch/ia64/hypercall.c Sat Jul  9 14:58:56 2005
+++ b/xen/arch/ia64/hypercall.c Sun Jul 10 15:53:17 2005
@@ -34,7 +34,7 @@
            case FW_HYPERCALL_PAL_CALL:
                //printf("*** PAL hypercall: index=%d\n",regs->r28);
                //FIXME: This should call a C routine
-#if 1
+#if 0
                // This is very conservative, but avoids a possible
                // (and deadly) freeze in paravirtualized domains due
                // to a yet-to-be-found bug where pending_interruption
@@ -47,8 +47,9 @@
 #define SPURIOUS_VECTOR 15
                        pi = vcpu_check_pending_interrupts(v);
                        if (pi != SPURIOUS_VECTOR) {
-                               idle_when_pending++;
-                               pi = vcpu_pend_unspecified_interrupt(v);
+                               if (!v->vcpu_info->arch.pending_interruption)
+                                       idle_when_pending++;
+                               vcpu_pend_unspecified_interrupt(v);
 //printf("idle w/int#%d pending!\n",pi);
 //this shouldn't happen, but it apparently does quite a bit!  so don't
 //allow it to happen... i.e. if a domain has an interrupt pending and
diff -r ca44d2dbb273 -r d0a1154755c9 xen/arch/ia64/privop.c
--- a/xen/arch/ia64/privop.c    Sat Jul  9 14:58:56 2005
+++ b/xen/arch/ia64/privop.c    Sun Jul 10 15:53:17 2005
@@ -1040,6 +1040,7 @@
 extern unsigned long lazy_cover_count;
 extern unsigned long idle_when_pending;
 extern unsigned long pal_halt_light_count;
+extern unsigned long context_switch_count;
 
 int dump_misc_stats(char *buf)
 {
@@ -1050,6 +1051,7 @@
        s += sprintf(s,"Physical translations: %d\n",phys_translate_count);
        s += sprintf(s,"Idle when pending: %d\n",idle_when_pending);
        s += sprintf(s,"PAL_HALT_LIGHT (no pending): 
%d\n",pal_halt_light_count);
+       s += sprintf(s,"context switches: %d\n",context_switch_count);
        s += sprintf(s,"Lazy covers: %d\n",lazy_cover_count);
        return s - buf;
 }
@@ -1061,6 +1063,9 @@
        phys_translate_count = 0;
        vhpt_translate_count = 0;
        lazy_cover_count = 0;
+       pal_halt_light_count = 0;
+       idle_when_pending = 0;
+       context_switch_count = 0;
 }
 
 int dump_hyperprivop_counts(char *buf)
diff -r ca44d2dbb273 -r d0a1154755c9 xen/arch/ia64/xenmisc.c
--- a/xen/arch/ia64/xenmisc.c   Sat Jul  9 14:58:56 2005
+++ b/xen/arch/ia64/xenmisc.c   Sun Jul 10 15:53:17 2005
@@ -257,6 +257,8 @@
 void cs10foo(void) {}
 void cs01foo(void) {}
 
+unsigned long context_switch_count = 0;
+
 // context_switch
 void context_switch(struct vcpu *prev, struct vcpu *next)
 {
@@ -276,6 +278,7 @@
        /* Housekeeping for prev domain */
 #endif // CONFIG_VTI
 
+       context_switch_count++;
        switch_to(prev,next,prev);
 #ifdef CONFIG_VTI
        /* Post-setup for new domain */

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