xen: Fix misleading WARN message at xen_release_chunk

WARN message should not complain
 "Failed to release memory %lx-%lx err=%d\n"
                           ^^^^^^^
about range when it fails to release just one page,
instead it should say what pfn is not freed.

In addition line:
 printk(KERN_INFO "xen_release_chunk: looking at area pfn %lx-%lx: "
 ...
 printk(KERN_CONT "%lu pages freed\n", len);
will be broken if WARN in between this line is fired. So fix it
by using a single printk for this.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

diff --git a/arch/x86/xen/setup.c b/arch/x86/xen/setup.c
index e405632..02ffd9e 100644 (file)
--- a/arch/x86/xen/setup.c
+++ b/arch/x86/xen/setup.c
@@ -92,8 +92,6 @@ static unsigned long __init xen_release_chunk(phys_addr_t start_addr,
        if (end <= start)
                return 0;
 
-       printk(KERN_INFO "xen_release_chunk: looking at area pfn %lx-%lx: ",
-              start, end);
        for(pfn = start; pfn < end; pfn++) {
                unsigned long mfn = pfn_to_mfn(pfn);
 
@@ -106,14 +104,14 @@ static unsigned long __init xen_release_chunk(phys_addr_t start_addr,
 
                ret = HYPERVISOR_memory_op(XENMEM_decrease_reservation,
                                           &reservation);
-               WARN(ret != 1, "Failed to release memory %lx-%lx err=%d\n",
-                    start, end, ret);
+               WARN(ret != 1, "Failed to release pfn %lx err=%d\n", pfn, ret);
                if (ret == 1) {
                        __set_phys_to_machine(pfn, INVALID_P2M_ENTRY);
                        len++;
                }
        }
-       printk(KERN_CONT "%lu pages freed\n", len);
+       printk(KERN_INFO "Freeing  %lx-%lx pfn range: %lu pages freed\n",
+              start, end, len);
 
        return len;
 }