[Xen-devel] [PATCH v2 06/23] console: do not print banner if below info log threshold

[Anthony Liguori <aliguori@xxxxxxxx>]

From: Anthony Liguori <aliguori@xxxxxxxxxx>

Only print the banner if the log threshold is at least info.

For Vixen guests, we want the console output to be exactly what the
PV guest would show on it's own.  That means the inner Xen banner
can potentially break automation that assumes a specific type of
console output.

Signed-off-by: Anthony Liguori <aliguori@xxxxxxxxxx>
---
 xen/drivers/char/console.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/xen/drivers/char/console.c b/xen/drivers/char/console.c
index 0f85707..3eb130d 100644
--- a/xen/drivers/char/console.c
+++ b/xen/drivers/char/console.c
@@ -812,9 +812,12 @@ void __init console_init_preirq(void)
     serial_set_rx_handler(sercon_handle, serial_rx);
 
     /* HELLO WORLD --- start-of-day banner text. */
-    spin_lock(&console_lock);
-    __putstr(xen_banner());
-    spin_unlock(&console_lock);
+    if ( 2 < xenlog_lower_thresh ) {
+        /* Only display at XENLOG_INFO level */
+        spin_lock(&console_lock);
+        __putstr(xen_banner());
+        spin_unlock(&console_lock);
+    }
     printk("Xen version %d.%d%s (%s@%s) (%s) debug=%c " gcov_string " %s\n",
            xen_major_version(), xen_minor_version(), xen_extra_version(),
            xen_compile_by(), xen_compile_domain(),
-- 
1.9.1


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