[Xen-devel] [PATCH v4 18/53] xen/arch/x86/oprofile/nmi_int.c: let custom parameter parsing routines return errno

[Juergen Gross <jgross@xxxxxxxx>]

Modify the custom parameter parsing routines in:

xen/arch/x86/oprofile/nmi_int.c

to indicate whether the parameter value was parsed successfully.

Cc: Jan Beulich <jbeulich@xxxxxxxx>
Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
Acked-by: Wei Liu <wei.liu2@xxxxxxxxxx>
Acked-by: Jan Beulich <jbeulich@xxxxxxxx>
---
 xen/arch/x86/oprofile/nmi_int.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/xen/arch/x86/oprofile/nmi_int.c b/xen/arch/x86/oprofile/nmi_int.c
index 126f7a8d9f..84ba108fdb 100644
--- a/xen/arch/x86/oprofile/nmi_int.c
+++ b/xen/arch/x86/oprofile/nmi_int.c
@@ -323,12 +323,15 @@ static int __init p4_init(char ** cpu_type)
 
 
 static int force_arch_perfmon;
+
 static int force_cpu_type(const char *str)
 {
        if (!strcmp(str, "arch_perfmon")) {
                force_arch_perfmon = 1;
                printk(KERN_INFO "oprofile: forcing architectural perfmon\n");
        }
+       else
+               return -EINVAL;
 
        return 0;
 }
-- 
2.12.3


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