powerpc/kprobes: Fixes for kprobe_lookup_name() on BE

Fix two issues with kprobes.h on BE which were exposed with the
optprobes work:
  - one, having to do with a missing include for linux/module.h for
    MODULE_NAME_LEN -- this didn't show up previously since the only
    users of kprobe_lookup_name were in kprobes.c, which included
    linux/module.h through other headers, and
  - two, with a missing const qualifier for a local variable which ends
    up referring a string literal. Again, this is unique to how
    kprobe_lookup_name is being invoked in optprobes.c

Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

diff --git a/arch/powerpc/include/asm/kprobes.h b/arch/powerpc/include/asm/kprobes.h
index 97b8c1f83453038c3c594bae8820fa9e7b128ec5..77885d89f5486b7892967385a7ccd41fb8e97e7b 100644 (file)
--- a/arch/powerpc/include/asm/kprobes.h
+++ b/arch/powerpc/include/asm/kprobes.h
@@ -29,6 +29,7 @@
 #include <linux/types.h>
 #include <linux/ptrace.h>
 #include <linux/percpu.h>
+#include <linux/module.h>
 #include <asm/probes.h>
 #include <asm/code-patching.h>
 
@@ -61,7 +62,7 @@ typedef ppc_opcode_t kprobe_opcode_t;
 #define kprobe_lookup_name(name, addr)                                 \
 {                                                                      \
        char dot_name[MODULE_NAME_LEN + 1 + KSYM_NAME_LEN];             \
-       char *modsym;                                                   \
+       const char *modsym;                                                     \
        bool dot_appended = false;                                      \
        if ((modsym = strchr(name, ':')) != NULL) {                     \
                modsym++;                                               \