diff options
| author | Huang Ying <ying.huang@intel.com> | 2008-08-15 00:40:26 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-08-15 08:35:43 -0700 |
| commit | 3122c331190e9d1622bf1c8cf6ce3b17cca67c9e (patch) | |
| tree | e856b7a59f5ea5ba4f1662cefdae267b26af30dd /kernel/kexec.c | |
| parent | 9bdeb7b5d34f197dea7859d24475943395ffea5e (diff) | |
| download | lwn-3122c331190e9d1622bf1c8cf6ce3b17cca67c9e.tar.gz lwn-3122c331190e9d1622bf1c8cf6ce3b17cca67c9e.zip | |
kexec jump: fix for ftrace
Ftrace depends on some processor state that we destroyed during kexec and
restored by restore_processor_state(). So save_processor_state() and
restore_processor_state() are moved into machine_kexec() and ftrace is
restored after restore_processor_state().
Signed-off-by: Huang Ying <ying.huang@intel.com>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/kexec.c')
| -rw-r--r-- | kernel/kexec.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/kernel/kexec.c b/kernel/kexec.c index 17c80fdc453b..9fc6f7cbd8a8 100644 --- a/kernel/kexec.c +++ b/kernel/kexec.c @@ -1469,7 +1469,6 @@ int kernel_kexec(void) error = device_power_down(PMSG_FREEZE); if (error) goto Enable_irqs; - save_processor_state(); } else #endif { @@ -1482,7 +1481,6 @@ int kernel_kexec(void) #ifdef CONFIG_KEXEC_JUMP if (kexec_image->preserve_context) { - restore_processor_state(); device_power_up(PMSG_RESTORE); Enable_irqs: local_irq_enable(); |