| commit | 3dbc78d3a179d99611111d2d86d4283f1f4f82b4 | [log] [tgz] |
|---|---|---|
| author | Heiko Carstens <heiko.carstens@de.ibm.com> | Tue Dec 08 14:10:12 2015 +0100 |
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | Fri Dec 18 14:59:31 2015 +0100 |
| tree | 7a3bd42badb069791b161b3ef8514b9ea7c8a6bf | |
| parent | e527aec434b59745654d3b34a3aa7ce3392a85a5 [diff] |
s390/smp: save timestamp on external calls This is supposed to make debugging easier: if within a dump we can see that an external call or emergency signal IPI is pending but all cpus are idle, we have no idea for how long the interrupt is outstanding. Therefore save a timestamp into the per cpu pcpu array of the target cpu whenever such an IPI is sent. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>