[Xen-changelog] added performance counters for hypercalls and exceptions

[BitKeeper Bot <riel@xxxxxxxxxxx>]

ChangeSet 1.1238, 2005/02/25 17:27:21+00:00, 
rneugeba@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

        added performance counters for hypercalls and exceptions
        
        Signed-off-by: michael.fetterman@xxxxxxxxxxxx



 arch/x86/x86_32/asm-offsets.c |    3 +++
 arch/x86/x86_32/entry.S       |   10 ++++++++--
 common/perfc.c                |    2 +-
 include/xen/perfc_defn.h      |    2 ++
 4 files changed, 14 insertions(+), 3 deletions(-)


diff -Nru a/xen/arch/x86/x86_32/asm-offsets.c 
b/xen/arch/x86/x86_32/asm-offsets.c
--- a/xen/arch/x86/x86_32/asm-offsets.c 2005-04-05 12:05:30 -04:00
+++ b/xen/arch/x86/x86_32/asm-offsets.c 2005-04-05 12:05:30 -04:00
@@ -68,4 +68,7 @@
     BLANK();
 
     DEFINE(FIXMAP_apic_base, fix_to_virt(FIX_APIC_BASE));
+
+    OFFSET(PERFC_hypercalls, struct perfcounter_t, hypercalls);
+    OFFSET(PERFC_exceptions, struct perfcounter_t, exceptions);
 }
diff -Nru a/xen/arch/x86/x86_32/entry.S b/xen/arch/x86/x86_32/entry.S
--- a/xen/arch/x86/x86_32/entry.S       2005-04-05 12:05:30 -04:00
+++ b/xen/arch/x86/x86_32/entry.S       2005-04-05 12:05:30 -04:00
@@ -60,7 +60,7 @@
 #include <asm/apicdef.h>
 #include <asm/page.h>
 #include <public/xen.h>
-
+        
 #define GET_CURRENT(reg)         \
         movl $STACK_SIZE-4, reg; \
         orl  %esp, reg;          \
@@ -278,8 +278,11 @@
         subl $4,%esp
        SAVE_ALL(b)
         sti
+#ifdef PERF_COUNTERS
+        lock incl SYMBOL_NAME(perfcounters)+PERFC_hypercalls(,%eax,4)
+#endif
         GET_CURRENT(%ebx)
-       andl $(NR_hypercalls-1),%eax
+        andl $(NR_hypercalls-1),%eax
        call *SYMBOL_NAME(hypercall_table)(,%eax,4)
         movl %eax,XREGS_eax(%esp)       # save the return value
 
@@ -466,6 +469,9 @@
         movw  XREGS_entry_vector(%esp),%ax
         movl  %esp,%edx
        pushl %edx                      # push the xen_regs pointer
+#ifdef PERF_COUNTERS
+        lock incl SYMBOL_NAME(perfcounters)+PERFC_exceptions(,%eax,4)
+#endif        
        GET_CURRENT(%ebx)
        call  *SYMBOL_NAME(exception_table)(,%eax,4)
         addl  $4,%esp
diff -Nru a/xen/common/perfc.c b/xen/common/perfc.c
--- a/xen/common/perfc.c        2005-04-05 12:05:30 -04:00
+++ b/xen/common/perfc.c        2005-04-05 12:05:30 -04:00
@@ -66,7 +66,7 @@
         case TYPE_S_ARRAY:
             for ( j = sum = 0; j < perfc_info[i].nr_elements; j++ )
                 sum += atomic_read(&counters[j]);
-            printk("TOTAL[%10d]\n ", sum);
+            printk("TOTAL[%10d]  ", sum);
             for ( j = 0; j < perfc_info[i].nr_elements; j++ )
             {
                 printk("A%02d[%10d]  ", j, atomic_read(&counters[j]));
diff -Nru a/xen/include/xen/perfc_defn.h b/xen/include/xen/perfc_defn.h
--- a/xen/include/xen/perfc_defn.h      2005-04-05 12:05:30 -04:00
+++ b/xen/include/xen/perfc_defn.h      2005-04-05 12:05:30 -04:00
@@ -41,6 +41,8 @@
 PERFCOUNTER_ARRAY( wpt_updates, "writable pt updates", PERFC_MAX_PT_UPDATES )
 PERFCOUNTER_ARRAY( bpt_updates, "batched pt updates", PERFC_MAX_PT_UPDATES )
 
+PERFCOUNTER_ARRAY( hypercalls, "hypercalls", NR_hypercalls )
+PERFCOUNTER_ARRAY( exceptions, "exceptions", 32 ) /* XXX constant */
 
 #define VMX_PERF_EXIT_REASON_SIZE 37
 #define VMX_PERF_VECTOR_SIZE 0x20

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