[PATCH] s390x: Add support for CONFIG_THREAD_INFO_IN_TASK
by Michael Holzheu
For s390x we still use OFFSET(task_struct_thread_info) to find out
the stack base. Since crash commit c9f932440bd06f0 which added support
for the new CONFIG_THREAD_INFO_IN_TASK configuration (Linux 4.9-rc1)
this is no longer possible.
So fix this and use the generic task_to_stackbase() to find the stack
base instead.
Without the patch the stack backtrace for running tasks (bt -a) can be
incomplete.
Signed-off-by: Michael Holzheu <holzheu(a)linux.vnet.ibm.com>
---
s390x.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/s390x.c b/s390x.c
index 8e9cafa..e13bd59 100644
--- a/s390x.c
+++ b/s390x.c
@@ -1304,8 +1304,7 @@ static void s390x_back_trace_cmd(struct bt_info *bt)
* Print task stack
*/
if (THIS_KERNEL_VERSION >= LINUX(2, 6, 0)) {
- readmem(bt->task + OFFSET(task_struct_thread_info), KVADDR,
- &low, sizeof(long), "thread info", FAULT_ON_ERROR);
+ low = task_to_stackbase(bt->task);
} else {
low = bt->task;
}
--
2.8.4
8 years
- 2
- 1
maintenance of trace.c extension module
by Fei, Jie/费 杰
Hello Dave,
I'm Qiao Nuohan's colleague at FNST. Since Qiao now is busy with other work
and doesn't have time to maintain trace.c, I'd like to be the maintainer
of this module
from now on. And I'm working on the code of trace.c and Kyle's patches now.
Thanks,
Fei
8 years
- 2
- 3