leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

x86, ftrace, hw-branch-tracer: dump trace on oops

Browse Source 
Dump the branch trace on an oops (based on ftrace_dump_on_oops).

Signed-off-by: Markus Metzger <markus.t.metzger@intel.com>
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Markus Metzger
2009-01-19 10:31:01 +01:00
committed by Ingo Molnar
parent 5c5317de14
commit b1818748b0
4 changed files with 41 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
arch/x86/kernel/dumpstack.c
View File

@@ -14,6 +14,7 @@
#include <linux/bug.h>
#include <linux/nmi.h>
#include <linux/sysfs.h>
#include <linux/ftrace.h>
#include <asm/stacktrace.h>
@@ -195,6 +196,11 @@ unsigned __kprobes long oops_begin(void)
int cpu;
unsigned long flags;
/* notify the hw-branch tracer so it may disable tracing and
add the last trace to the trace buffer -
the earlier this happens, the more useful the trace. */
trace_hw_branch_oops();
oops_enter();
/* racy, but better than risking deadlock. */