From 748f2edb52712aa3d926470a888608dc500d17e8 Mon Sep 17 00:00:00 2001 From: George Anzinger Date: Sat, 3 Sep 2005 15:56:48 -0700 Subject: [PATCH] x86 NMI: better support for debuggers This patch adds a notify to the die_nmi notify that the system is about to be taken down. If the notify is handled with a NOTIFY_STOP return, the system is given a new lease on life. We also change the nmi watchdog to carry on if die_nmi returns. This give debug code a chance to a) catch watchdog timeouts and b) possibly allow the system to continue, realizing that the time out may be due to debugger activities such as single stepping which is usually done with "other" cpus held. Signed-off-by: George Anzinger Cc: Keith Owens Signed-off-by: George Anzinger Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/asm-i386/kdebug.h | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) (limited to 'include') diff --git a/include/asm-i386/kdebug.h b/include/asm-i386/kdebug.h index b3f8d5f59d5..316138e8991 100644 --- a/include/asm-i386/kdebug.h +++ b/include/asm-i386/kdebug.h @@ -41,9 +41,16 @@ enum die_val { DIE_PAGE_FAULT, }; -static inline int notify_die(enum die_val val,char *str,struct pt_regs *regs,long err,int trap, int sig) +static inline int notify_die(enum die_val val, const char *str, + struct pt_regs *regs, long err, int trap, int sig) { - struct die_args args = { .regs=regs, .str=str, .err=err, .trapnr=trap,.signr=sig }; + struct die_args args = { + .regs = regs, + .str = str, + .err = err, + .trapnr = trap, + .signr = sig + }; return notifier_call_chain(&i386die_chain, val, &args); } -- cgit v1.2.3