[xen staging] argo: define argo_dprintk for subsystem debugging

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[xen staging] argo: define argo_dprintk for subsystem debugging

commit c452c85f6fe6ad09c0b46b77c45216863f12c5b4
Author:     Christopher Clark <[hidden email]>
AuthorDate: Wed Feb 6 09:55:00 2019 +0100
Commit:     Jan Beulich <[hidden email]>
CommitDate: Thu Feb 7 14:20:38 2019 +0100

    argo: define argo_dprintk for subsystem debugging
    A convenience for working on development of the argo subsystem:
    setting a #define variable enables additional debug messages.
    Signed-off-by: Christopher Clark <[hidden email]>
    Acked-by: Jan Beulich <[hidden email]>
    Reviewed-by: Roger Pau Monné <[hidden email]>
 xen/common/argo.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/xen/common/argo.c b/xen/common/argo.c
index dd2390d3f3..ada1aaf937 100644
--- a/xen/common/argo.c
+++ b/xen/common/argo.c
@@ -19,6 +19,15 @@
 #include <xen/errno.h>
 #include <xen/guest_access.h>
+/* Change this to #define ARGO_DEBUG here to enable more debug messages */
+#undef ARGO_DEBUG
+#ifdef ARGO_DEBUG
+#define argo_dprintk(format, args...) printk("argo: " format, ## args )
+#define argo_dprintk(format, ... ) ((void)0)
 do_argo_op(unsigned int cmd, XEN_GUEST_HANDLE_PARAM(void) arg1,
            XEN_GUEST_HANDLE_PARAM(void) arg2, unsigned long raw_arg3,
generated by git-patchbot for /home/xen/git/xen.git#staging

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