[RFC][PATCH 4/9] jump_label, x86: Improve error when we fail expected text

[Peter Zijlstra]

There is only a single usage site left, remove the function and extend
the print to include more information, like the expected text and the
patch type.

Signed-off-by: Peter Zijlstra (Intel) <pet...@infradead.org>
---
 arch/x86/kernel/jump_label.c |   23 ++++++++++-------------
 1 file changed, 10 insertions(+), 13 deletions(-)

--- a/arch/x86/kernel/jump_label.c
+++ b/arch/x86/kernel/jump_label.c
@@ -16,17 +16,6 @@
 #include <asm/alternative.h>
 #include <asm/text-patching.h>
 
-static void bug_at(const void *ip, int line)
-{
-       /*
-        * The location is not an op that we were expecting.
-        * Something went wrong. Crash the box, as something could be
-        * corrupting the kernel.
-        */
-       pr_crit("jump_label: Fatal kernel bug, unexpected op at %pS [%p] (%5ph) 
%d\n", ip, ip, ip, line);
-       BUG();
-}
-
 static const void *
 __jump_label_set_jump_code(struct jump_entry *entry, enum jump_label_type 
type, int init)
 {
@@ -49,8 +38,16 @@ __jump_label_set_jump_code(struct jump_e
                expect = code; line = __LINE__;
        }
 
-       if (memcmp(addr, expect, JUMP_LABEL_NOP_SIZE))
-               bug_at(addr, line);
+       if (memcmp(addr, expect, JUMP_LABEL_NOP_SIZE)) {
+               /*
+                * The location is not an op that we were expecting.
+                * Something went wrong. Crash the box, as something could be
+                * corrupting the kernel.
+                */
+               pr_crit("jump_label: Fatal kernel bug, unexpected op at %pS 
[%p] (%5ph != %5ph)) line:%d init:%d type:%d\n",
+                               addr, addr, addr, expect, line, init, type);
+               BUG();
+       }
 
        if (type == JUMP_LABEL_NOP)
                code = ideal_nop;