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authorHeiko Carstens <heiko.carstens@de.ibm.com>2007-04-27 16:01:42 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2007-04-27 16:01:42 +0200
commitc0007f1a65762eaf55633d403b380130ec60adad (patch)
tree877ad01344b48a11b293c879b2161a4865b897e5 /arch/s390/kernel/traps.c
parentbb11e3bdbac08f773a89f3ca287024a956ee8a12 (diff)
downloadop-kernel-dev-c0007f1a65762eaf55633d403b380130ec60adad.zip
op-kernel-dev-c0007f1a65762eaf55633d403b380130ec60adad.tar.gz
[S390] Use generic bug.
Generic bug implementation for s390. Will increase the value of the console output on BUG() statements since registers r0-r5,r14 will not be clobbered by a printk() call that was previously done before the illegal instruction of BUG() was hit. Also implements an architecture specific WARN_ON(). Output of that could be increased but requires common code change. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Diffstat (limited to 'arch/s390/kernel/traps.c')
-rw-r--r--arch/s390/kernel/traps.c17
1 files changed, 14 insertions, 3 deletions
diff --git a/arch/s390/kernel/traps.c b/arch/s390/kernel/traps.c
index a654094..49dec83 100644
--- a/arch/s390/kernel/traps.c
+++ b/arch/s390/kernel/traps.c
@@ -30,7 +30,7 @@
#include <linux/kallsyms.h>
#include <linux/reboot.h>
#include <linux/kprobes.h>
-
+#include <linux/bug.h>
#include <asm/system.h>
#include <asm/uaccess.h>
#include <asm/io.h>
@@ -297,6 +297,11 @@ report_user_fault(long interruption_code, struct pt_regs *regs)
#endif
}
+int is_valid_bugaddr(unsigned long addr)
+{
+ return 1;
+}
+
static void __kprobes inline do_trap(long interruption_code, int signr,
char *str, struct pt_regs *regs,
siginfo_t *info)
@@ -323,8 +328,14 @@ static void __kprobes inline do_trap(long interruption_code, int signr,
fixup = search_exception_tables(regs->psw.addr & PSW_ADDR_INSN);
if (fixup)
regs->psw.addr = fixup->fixup | PSW_ADDR_AMODE;
- else
- die(str, regs, interruption_code);
+ else {
+ enum bug_trap_type btt;
+
+ btt = report_bug(regs->psw.addr & PSW_ADDR_INSN);
+ if (btt == BUG_TRAP_TYPE_WARN)
+ return;
+ die(str, regs, interruption_code);
+ }
}
}
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