File 531d8fd0-kexec-identify-which-cpu-the-kexec-ima... of Package xen

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File 531d8fd0-kexec-identify-which-cpu-the-kexec-image-is-being-executed-on.patch of Package xen (Revision d8816c68b42e2d2b6a305463ec58423d)

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# Commit 4509ada6ba1f09cc8f4fa23e009e7e5a963b6086
# Date 2014-03-10 11:11:28 +0100
# Author Andrew Cooper <andrew.cooper3@citrix.com>
# Committer Jan Beulich <jbeulich@suse.com>
kexec: identify which cpu the kexec image is being executed on

A patch to this effect has been in XenServer for a little while, and has
proved to be a useful debugging point for servers which have different
behaviours depending when crashing on the non-bootstrap processor.

Moving the printk() from kexec_panic() to one_cpu_only() means that it will
only be printed for the cpu which wins the race along the kexec path.

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Acked-by: David Vrabel <david.vrabel@citrix.com>

--- a/xen/common/kexec.c
+++ b/xen/common/kexec.c
@@ -265,6 +265,8 @@ static int noinline one_cpu_only(void)
     }
 
     set_bit(KEXEC_FLAG_IN_PROGRESS, &kexec_flags);
+    printk("Executing kexec image on cpu%u\n", cpu);
+
     return 0;
 }
 
@@ -340,8 +342,6 @@ void kexec_crash(void)
     if ( !test_bit(KEXEC_IMAGE_CRASH_BASE + pos, &kexec_flags) )
         return;
 
-    printk("Executing crash image\n");
-
     kexecing = TRUE;
 
     if ( kexec_common_shutdown() != 0 )

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File 531d8fd0-kexec-identify-which-cpu-the-kexec-image-is-being-executed-on.patch of Package xen (Revision d8816c68b42e2d2b6a305463ec58423d)

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