[xen master] perfc: drop calls_to_multicall performance counter

[patchbot@xxxxxxx]

commit 1382241fe880d48e109f2056cec052bb3919a9d1
Author:     Juergen Gross <jgross@xxxxxxxx>
AuthorDate: Tue Dec 14 09:50:07 2021 +0100
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Tue Dec 14 09:50:07 2021 +0100

    perfc: drop calls_to_multicall performance counter
    
    The calls_to_multicall performance counter is basically redundant to
    the multicall hypercall counter. The only difference is the counting
    of continuation calls, which isn't really that interesting.
    
    Drop the calls_to_multicall performance counter.
    
    Suggested-by: Jan Beulich <jbeulich@xxxxxxxx>
    Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
    Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
---
 xen/common/multicall.c       | 1 -
 xen/include/xen/perfc_defn.h | 1 -
 2 files changed, 2 deletions(-)

diff --git a/xen/common/multicall.c b/xen/common/multicall.c
index 5a199ebf8f..794638392b 100644
--- a/xen/common/multicall.c
+++ b/xen/common/multicall.c
@@ -113,7 +113,6 @@ do_multicall(
     if ( unlikely(disp == mc_preempt) && i < nr_calls )
         goto preempted;
 
-    perfc_incr(calls_to_multicall);
     perfc_add(calls_from_multicall, i);
     mcs->flags = 0;
     return rc;
diff --git a/xen/include/xen/perfc_defn.h b/xen/include/xen/perfc_defn.h
index 13486d3ed9..672b51c456 100644
--- a/xen/include/xen/perfc_defn.h
+++ b/xen/include/xen/perfc_defn.h
@@ -6,7 +6,6 @@
 
 PERFCOUNTER_ARRAY(hypercalls,           "hypercalls", NR_hypercalls)
 
-PERFCOUNTER(calls_to_multicall,         "calls to multicall")
 PERFCOUNTER(calls_from_multicall,       "calls from multicall")
 
 PERFCOUNTER(irqs,                   "#interrupts")
--
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