[xen master] xen/sysctl: wrap around XEN_SYSCTL_perfc_op

[patchbot@xxxxxxx]

commit dbe929a2205df4397e70c314fc942f3e29c84951
Author:     Penny Zheng <Penny.Zheng@xxxxxxx>
AuthorDate: Mon Jun 30 10:02:35 2025 +0200
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Mon Jun 30 10:02:35 2025 +0200

    xen/sysctl: wrap around XEN_SYSCTL_perfc_op
    
    perfc_control() and perfc_copy_info() are responsible for providing control
    of perf counters via XEN_SYSCTL_perfc_op in DOM0, so they both shall
    be wrapped.
    
    Signed-off-by: Penny Zheng <Penny.Zheng@xxxxxxx>
    Reviewed-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>
---
 xen/common/perfc.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/xen/common/perfc.c b/xen/common/perfc.c
index 8302b7cf6d..0f3b89af2c 100644
--- a/xen/common/perfc.c
+++ b/xen/common/perfc.c
@@ -149,6 +149,7 @@ void cf_check perfc_reset(unsigned char key)
     }
 }
 
+#ifdef CONFIG_SYSCTL
 static struct xen_sysctl_perfc_desc perfc_d[NR_PERFCTRS];
 static xen_sysctl_perfc_val_t *perfc_vals;
 static unsigned int      perfc_nbr_vals;
@@ -265,6 +266,7 @@ int perfc_control(struct xen_sysctl_perfc_op *pc)
 
     return rc;
 }
+#endif /* CONFIG_SYSCTL */
 
 /*
  * Local variables:
--
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