diff options
| author | Peter Oberparleiter <oberpar@linux.vnet.ibm.com> | 2015-12-18 12:59:36 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2015-12-18 14:59:36 +0100 |
| commit | 42248979d5705e056b509cdcfb548e40f708cba8 (patch) | |
| tree | 0046a29f78bdfff21bfa8cbfd5896cf1b5b6f9b0 /drivers/s390/cio/cio.c | |
| parent | 2ab59de7c5ce7c5ed6db07278554901d43fe80a0 (diff) | |
s390/cio: Introduce common I/O layer tracepoints
Add tracepoints to interrupt handler and core inline assemblies used by
the s390 common I/O layer. These tracepoints can be used to monitor and
validate hardware and hypervisor requests and responses.
Signed-off-by: Peter Oberparleiter <oberpar@linux.vnet.ibm.com>
Reviewed-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/cio/cio.c')
| -rw-r--r-- | drivers/s390/cio/cio.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/s390/cio/cio.c b/drivers/s390/cio/cio.c index 5f5c24030405..39a8ae54e9c1 100644 --- a/drivers/s390/cio/cio.c +++ b/drivers/s390/cio/cio.c @@ -41,6 +41,7 @@ #include "blacklist.h" #include "cio_debug.h" #include "chp.h" +#include "trace.h" debug_info_t *cio_debug_msg_id; debug_info_t *cio_debug_trace_id; @@ -539,6 +540,7 @@ static irqreturn_t do_cio_interrupt(int irq, void *dummy) set_cpu_flag(CIF_NOHZ_DELAY); tpi_info = (struct tpi_info *) &get_irq_regs()->int_code; + trace_s390_cio_interrupt(tpi_info); irb = this_cpu_ptr(&cio_irb); sch = (struct subchannel *)(unsigned long) tpi_info->intparm; if (!sch) { |