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[PATCH v2 07/19] xen/sysctl: wrap around XEN_SYSCTL_perfc_op
- To: <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Penny Zheng <Penny.Zheng@xxxxxxx>
- Date: Wed, 26 Mar 2025 13:50:41 +0800
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- Cc: <ray.huang@xxxxxxx>, Penny Zheng <Penny.Zheng@xxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Anthony PERARD <anthony.perard@xxxxxxxxxx>, Michal Orzel <michal.orzel@xxxxxxx>, Jan Beulich <jbeulich@xxxxxxxx>, "Julien Grall" <julien@xxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>
- Delivery-date: Wed, 26 Mar 2025 05:53:48 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
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>
---
- add transient #ifdef in sysctl.c for correct compilation
---
xen/common/perfc.c | 2 ++
xen/common/sysctl.c | 2 ++
2 files changed, 4 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:
diff --git a/xen/common/sysctl.c b/xen/common/sysctl.c
index c3646517bc..0da82d6e31 100644
--- a/xen/common/sysctl.c
+++ b/xen/common/sysctl.c
@@ -117,11 +117,13 @@ long do_sysctl(XEN_GUEST_HANDLE_PARAM(xen_sysctl_t)
u_sysctl)
}
break;
+#ifdef CONFIG_SYSCTL
#ifdef CONFIG_PERF_COUNTERS
case XEN_SYSCTL_perfc_op:
ret = perfc_control(&op->u.perfc_op);
break;
#endif
+#endif /* CONFIG_SYSCTL */
#ifdef CONFIG_DEBUG_LOCK_PROFILE
case XEN_SYSCTL_lockprof_op:
--
2.34.1
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