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Mon, 13 Dec 2021 14:34:04 +0000 (GMT) Received: from [9.171.24.181] (unknown [9.171.24.181]) by d06av25.portsmouth.uk.ibm.com (Postfix) with ESMTP; Mon, 13 Dec 2021 14:34:04 +0000 (GMT) Message-ID: <3e84e25c-825a-e791-a689-91b50b38aca9@linux.ibm.com> Date: Mon, 13 Dec 2021 15:35:08 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.2.0 Subject: Re: [PATCH 05/32] s390/airq: pass more TPI info to airq handlers Content-Language: en-US To: Matthew Rosato , linux-s390@vger.kernel.org Cc: alex.williamson@redhat.com, cohuck@redhat.com, schnelle@linux.ibm.com, farman@linux.ibm.com, borntraeger@linux.ibm.com, hca@linux.ibm.com, gor@linux.ibm.com, gerald.schaefer@linux.ibm.com, agordeev@linux.ibm.com, frankja@linux.ibm.com, david@redhat.com, imbrenda@linux.ibm.com, vneethv@linux.ibm.com, oberpar@linux.ibm.com, freude@linux.ibm.com, thuth@redhat.com, pasic@linux.ibm.com, kvm@vger.kernel.org, linux-kernel@vger.kernel.org References: <20211207205743.150299-1-mjrosato@linux.ibm.com> <20211207205743.150299-6-mjrosato@linux.ibm.com> From: Pierre Morel In-Reply-To: <20211207205743.150299-6-mjrosato@linux.ibm.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: CtmGTHgVqeOCIVKtkSlh9IAEkJHGkG02 X-Proofpoint-GUID: tS1BqkPZ4FESUwBb6JnbjF3bEQ8ENNN9 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.790,Hydra:6.0.425,FMLib:17.11.62.513 definitions=2021-12-13_06,2021-12-13_01,2021-12-02_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 spamscore=0 impostorscore=0 mlxscore=0 malwarescore=0 clxscore=1015 adultscore=0 bulkscore=0 phishscore=0 mlxlogscore=999 priorityscore=1501 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2110150000 definitions=main-2112130093 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 12/7/21 21:57, Matthew Rosato wrote: > A subsequent patch will introduce an airq handler that requires additional > TPI information beyond directed vs floating, so pass the entire tpi_info > structure via the handler. Only pci actually uses this information today, > for the other airq handlers this is effectively a no-op. > > Reviewed-by: Eric Farman > Signed-off-by: Matthew Rosato Reviewed-by: Pierre Morel > --- > arch/s390/include/asm/airq.h | 3 ++- > arch/s390/kvm/interrupt.c | 4 +++- > arch/s390/pci/pci_irq.c | 9 +++++++-- > drivers/s390/cio/airq.c | 2 +- > drivers/s390/cio/qdio_thinint.c | 6 ++++-- > drivers/s390/crypto/ap_bus.c | 9 ++++++--- > drivers/s390/virtio/virtio_ccw.c | 4 +++- > 7 files changed, 26 insertions(+), 11 deletions(-) > > diff --git a/arch/s390/include/asm/airq.h b/arch/s390/include/asm/airq.h > index 01936fdfaddb..7918a7d09028 100644 > --- a/arch/s390/include/asm/airq.h > +++ b/arch/s390/include/asm/airq.h > @@ -12,10 +12,11 @@ > > #include > #include > +#include > > struct airq_struct { > struct hlist_node list; /* Handler queueing. */ > - void (*handler)(struct airq_struct *airq, bool floating); > + void (*handler)(struct airq_struct *airq, struct tpi_info *tpi_info); > u8 *lsi_ptr; /* Local-Summary-Indicator pointer */ > u8 lsi_mask; /* Local-Summary-Indicator mask */ > u8 isc; /* Interrupt-subclass */ > diff --git a/arch/s390/kvm/interrupt.c b/arch/s390/kvm/interrupt.c > index c3bd993fdd0c..f9b872e358c6 100644 > --- a/arch/s390/kvm/interrupt.c > +++ b/arch/s390/kvm/interrupt.c > @@ -28,6 +28,7 @@ > #include > #include > #include > +#include > #include "kvm-s390.h" > #include "gaccess.h" > #include "trace-s390.h" > @@ -3261,7 +3262,8 @@ int kvm_s390_gisc_unregister(struct kvm *kvm, u32 gisc) > } > EXPORT_SYMBOL_GPL(kvm_s390_gisc_unregister); > > -static void gib_alert_irq_handler(struct airq_struct *airq, bool floating) > +static void gib_alert_irq_handler(struct airq_struct *airq, > + struct tpi_info *tpi_info) > { > inc_irq_stat(IRQIO_GAL); > process_gib_alert_list(); > diff --git a/arch/s390/pci/pci_irq.c b/arch/s390/pci/pci_irq.c > index 954bb7a83124..880bcd73f11a 100644 > --- a/arch/s390/pci/pci_irq.c > +++ b/arch/s390/pci/pci_irq.c > @@ -11,6 +11,7 @@ > > #include > #include > +#include > > static enum {FLOATING, DIRECTED} irq_delivery; > > @@ -216,8 +217,11 @@ static void zpci_handle_fallback_irq(void) > } > } > > -static void zpci_directed_irq_handler(struct airq_struct *airq, bool floating) > +static void zpci_directed_irq_handler(struct airq_struct *airq, > + struct tpi_info *tpi_info) > { > + bool floating = !tpi_info->directed_irq; > + > if (floating) { > inc_irq_stat(IRQIO_PCF); > zpci_handle_fallback_irq(); > @@ -227,7 +231,8 @@ static void zpci_directed_irq_handler(struct airq_struct *airq, bool floating) > } > } > > -static void zpci_floating_irq_handler(struct airq_struct *airq, bool floating) > +static void zpci_floating_irq_handler(struct airq_struct *airq, > + struct tpi_info *tpi_info) > { > unsigned long si, ai; > struct airq_iv *aibv; > diff --git a/drivers/s390/cio/airq.c b/drivers/s390/cio/airq.c > index e56535c99888..2f2226786319 100644 > --- a/drivers/s390/cio/airq.c > +++ b/drivers/s390/cio/airq.c > @@ -99,7 +99,7 @@ static irqreturn_t do_airq_interrupt(int irq, void *dummy) > rcu_read_lock(); > hlist_for_each_entry_rcu(airq, head, list) > if ((*airq->lsi_ptr & airq->lsi_mask) != 0) > - airq->handler(airq, !tpi_info->directed_irq); > + airq->handler(airq, tpi_info); > rcu_read_unlock(); > > return IRQ_HANDLED; > diff --git a/drivers/s390/cio/qdio_thinint.c b/drivers/s390/cio/qdio_thinint.c > index 8e09bf3a2fcd..9b9335dd06db 100644 > --- a/drivers/s390/cio/qdio_thinint.c > +++ b/drivers/s390/cio/qdio_thinint.c > @@ -15,6 +15,7 @@ > #include > #include > #include > +#include > > #include "cio.h" > #include "ioasm.h" > @@ -93,9 +94,10 @@ static inline u32 clear_shared_ind(void) > /** > * tiqdio_thinint_handler - thin interrupt handler for qdio > * @airq: pointer to adapter interrupt descriptor > - * @floating: flag to recognize floating vs. directed interrupts (unused) > + * @tpi_info: interrupt information (e.g. floating vs directed -- unused) > */ > -static void tiqdio_thinint_handler(struct airq_struct *airq, bool floating) > +static void tiqdio_thinint_handler(struct airq_struct *airq, > + struct tpi_info *tpi_info) > { > u64 irq_time = S390_lowcore.int_clock; > u32 si_used = clear_shared_ind(); > diff --git a/drivers/s390/crypto/ap_bus.c b/drivers/s390/crypto/ap_bus.c > index 1986243f9cd3..df1a038442db 100644 > --- a/drivers/s390/crypto/ap_bus.c > +++ b/drivers/s390/crypto/ap_bus.c > @@ -27,6 +27,7 @@ > #include > #include > #include > +#include > #include > #include > #include > @@ -129,7 +130,8 @@ static int ap_max_adapter_id = 63; > static struct bus_type ap_bus_type; > > /* Adapter interrupt definitions */ > -static void ap_interrupt_handler(struct airq_struct *airq, bool floating); > +static void ap_interrupt_handler(struct airq_struct *airq, > + struct tpi_info *tpi_info); > > static bool ap_irq_flag; > > @@ -442,9 +444,10 @@ static enum hrtimer_restart ap_poll_timeout(struct hrtimer *unused) > /** > * ap_interrupt_handler() - Schedule ap_tasklet on interrupt > * @airq: pointer to adapter interrupt descriptor > - * @floating: ignored > + * @tpi_info: ignored > */ > -static void ap_interrupt_handler(struct airq_struct *airq, bool floating) > +static void ap_interrupt_handler(struct airq_struct *airq, > + struct tpi_info *tpi_info) > { > inc_irq_stat(IRQIO_APB); > tasklet_schedule(&ap_tasklet); > diff --git a/drivers/s390/virtio/virtio_ccw.c b/drivers/s390/virtio/virtio_ccw.c > index d35e7a3f7067..52c376d15978 100644 > --- a/drivers/s390/virtio/virtio_ccw.c > +++ b/drivers/s390/virtio/virtio_ccw.c > @@ -33,6 +33,7 @@ > #include > #include > #include > +#include > > /* > * virtio related functions > @@ -203,7 +204,8 @@ static void drop_airq_indicator(struct virtqueue *vq, struct airq_info *info) > write_unlock_irqrestore(&info->lock, flags); > } > > -static void virtio_airq_handler(struct airq_struct *airq, bool floating) > +static void virtio_airq_handler(struct airq_struct *airq, > + struct tpi_info *tpi_info) > { > struct airq_info *info = container_of(airq, struct airq_info, airq); > unsigned long ai; > -- Pierre Morel IBM Lab Boeblingen