From: Greg Kurz <groug@kaod.org>
To: David Gibson <david@gibson.dropbear.id.au>
Cc: "Jason Wang" <jasowang@redhat.com>,
"Riku Voipio" <riku.voipio@iki.fi>,
qemu-devel@nongnu.org, "Laurent Vivier" <laurent@vivier.eu>,
qemu-ppc@nongnu.org, clg@kaod.org,
"Marc-André Lureau" <marcandre.lureau@redhat.com>,
"Paolo Bonzini" <pbonzini@redhat.com>,
philmd@redhat.com
Subject: Re: [PATCH 15/20] spapr: Handle freeing of multiple irqs in frontend only
Date: Thu, 26 Sep 2019 09:52:35 +0200 [thread overview]
Message-ID: <20190926095235.221fcc2a@bahia.lan> (raw)
In-Reply-To: <20190925064534.19155-16-david@gibson.dropbear.id.au>
On Wed, 25 Sep 2019 16:45:29 +1000
David Gibson <david@gibson.dropbear.id.au> wrote:
> spapr_irq_free() can be used to free multiple irqs at once. That's useful
> for its callers, but there's no need to make the individual backend hooks
> handle this. We can loop across the irqs in spapr_irq_free() itself and
> have the hooks just do one at time.
>
> Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
> ---
Reviewed-by: Greg Kurz <groug@kaod.org>
> hw/ppc/spapr_irq.c | 27 ++++++++++++---------------
> include/hw/ppc/spapr_irq.h | 2 +-
> 2 files changed, 13 insertions(+), 16 deletions(-)
>
> diff --git a/hw/ppc/spapr_irq.c b/hw/ppc/spapr_irq.c
> index db6755f3ab..c40357a985 100644
> --- a/hw/ppc/spapr_irq.c
> +++ b/hw/ppc/spapr_irq.c
> @@ -133,16 +133,13 @@ static int spapr_irq_claim_xics(SpaprMachineState *spapr, int irq, bool lsi,
> return 0;
> }
>
> -static void spapr_irq_free_xics(SpaprMachineState *spapr, int irq, int num)
> +static void spapr_irq_free_xics(SpaprMachineState *spapr, int irq)
> {
> ICSState *ics = spapr->ics;
> uint32_t srcno = irq - ics->offset;
> - int i;
>
> if (ics_valid_irq(ics, irq)) {
> - for (i = srcno; i < srcno + num; ++i) {
> - memset(&ics->irqs[i], 0, sizeof(ICSIRQState));
> - }
> + memset(&ics->irqs[srcno], 0, sizeof(ICSIRQState));
> }
> }
>
> @@ -269,13 +266,9 @@ static int spapr_irq_claim_xive(SpaprMachineState *spapr, int irq, bool lsi,
> return 0;
> }
>
> -static void spapr_irq_free_xive(SpaprMachineState *spapr, int irq, int num)
> +static void spapr_irq_free_xive(SpaprMachineState *spapr, int irq)
> {
> - int i;
> -
> - for (i = irq; i < irq + num; ++i) {
> - spapr_xive_irq_free(spapr->xive, i);
> - }
> + spapr_xive_irq_free(spapr->xive, irq);
> }
>
> static void spapr_irq_print_info_xive(SpaprMachineState *spapr,
> @@ -438,10 +431,10 @@ static int spapr_irq_claim_dual(SpaprMachineState *spapr, int irq, bool lsi,
> return ret;
> }
>
> -static void spapr_irq_free_dual(SpaprMachineState *spapr, int irq, int num)
> +static void spapr_irq_free_dual(SpaprMachineState *spapr, int irq)
> {
> - spapr_irq_xics.free(spapr, irq, num);
> - spapr_irq_xive.free(spapr, irq, num);
> + spapr_irq_xics.free(spapr, irq);
> + spapr_irq_xive.free(spapr, irq);
> }
>
> static void spapr_irq_print_info_dual(SpaprMachineState *spapr, Monitor *mon)
> @@ -640,7 +633,11 @@ int spapr_irq_claim(SpaprMachineState *spapr, int irq, bool lsi, Error **errp)
>
> void spapr_irq_free(SpaprMachineState *spapr, int irq, int num)
> {
> - spapr->irq->free(spapr, irq, num);
> + int i;
> +
> + for (i = irq; i < (irq + num); i++) {
> + spapr->irq->free(spapr, irq);
> + }
> }
>
> qemu_irq spapr_qirq(SpaprMachineState *spapr, int irq)
> diff --git a/include/hw/ppc/spapr_irq.h b/include/hw/ppc/spapr_irq.h
> index 9b60378e28..ed88b4599a 100644
> --- a/include/hw/ppc/spapr_irq.h
> +++ b/include/hw/ppc/spapr_irq.h
> @@ -43,7 +43,7 @@ typedef struct SpaprIrq {
>
> void (*init)(SpaprMachineState *spapr, Error **errp);
> int (*claim)(SpaprMachineState *spapr, int irq, bool lsi, Error **errp);
> - void (*free)(SpaprMachineState *spapr, int irq, int num);
> + void (*free)(SpaprMachineState *spapr, int irq);
> void (*print_info)(SpaprMachineState *spapr, Monitor *mon);
> void (*dt_populate)(SpaprMachineState *spapr, uint32_t nr_servers,
> void *fdt, uint32_t phandle);
next prev parent reply other threads:[~2019-09-26 7:54 UTC|newest]
Thread overview: 93+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-25 6:45 [PATCH 00/20] spapr: IRQ subsystem cleanups David Gibson
2019-09-25 6:45 ` [PATCH 01/20] xics: Use incomplete type for XICSFabric David Gibson
2019-09-25 6:55 ` Cédric Le Goater
2019-09-25 7:48 ` Greg Kurz
2019-09-25 7:45 ` Greg Kurz
2019-09-25 6:45 ` [PATCH 02/20] xics: Eliminate 'reject', 'resend' and 'eoi' class hooks David Gibson
2019-09-25 6:45 ` [PATCH 03/20] xics: Rename misleading ics_simple_*() functions David Gibson
2019-09-25 6:45 ` [PATCH 04/20] xics: Eliminate reset hook David Gibson
2019-09-25 7:33 ` Cédric Le Goater
2019-09-25 7:59 ` Greg Kurz
2019-09-26 2:54 ` David Gibson
2019-09-25 6:45 ` [PATCH 05/20] xics: Merge TYPE_ICS_BASE and TYPE_ICS_SIMPLE classes David Gibson
2019-09-25 8:16 ` Greg Kurz
2019-09-25 8:31 ` Greg Kurz
2019-09-26 0:55 ` David Gibson
2019-09-26 0:52 ` David Gibson
2019-09-25 12:47 ` Cédric Le Goater
2019-09-25 6:45 ` [PATCH 06/20] xics: Create sPAPR specific ICS subtype David Gibson
2019-09-25 7:34 ` Cédric Le Goater
2019-09-25 8:40 ` Greg Kurz
2019-09-25 8:55 ` Cédric Le Goater
2019-09-25 9:07 ` Greg Kurz
2019-09-26 0:56 ` David Gibson
2019-09-26 7:09 ` Cédric Le Goater
2019-09-27 16:05 ` Greg Kurz
2019-09-30 8:45 ` David Gibson
2019-09-30 17:00 ` Greg Kurz
2019-10-01 1:45 ` David Gibson
2019-09-25 6:45 ` [PATCH 07/20] spapr: Fold spapr_phb_lsi_qirq() into its single caller David Gibson
2019-09-25 6:58 ` Cédric Le Goater
2019-09-25 8:56 ` Greg Kurz
2019-09-26 7:08 ` Philippe Mathieu-Daudé
2019-09-25 6:45 ` [PATCH 08/20] spapr: Replace spapr_vio_qirq() helper with spapr_vio_irq_pulse() helper David Gibson
2019-09-25 6:58 ` Cédric Le Goater
2019-09-25 8:57 ` Greg Kurz
2019-09-26 7:08 ` Philippe Mathieu-Daudé
2019-09-25 6:45 ` [PATCH 09/20] spapr: Clarify and fix handling of nr_irqs David Gibson
2019-09-25 7:05 ` Cédric Le Goater
2019-09-26 1:03 ` David Gibson
2019-09-26 7:02 ` Cédric Le Goater
2019-09-25 17:13 ` Greg Kurz
2019-09-25 6:45 ` [PATCH 10/20] spapr: Eliminate nr_irqs parameter to SpaprIrq::init David Gibson
2019-09-25 7:06 ` Cédric Le Goater
2019-09-25 17:16 ` Greg Kurz
2019-09-25 6:45 ` [PATCH 11/20] spapr: Fix indexing of XICS irqs David Gibson
2019-09-25 7:11 ` Cédric Le Goater
2019-09-25 20:17 ` Greg Kurz
2019-09-26 1:31 ` David Gibson
2019-09-26 7:21 ` Greg Kurz
2019-09-26 11:32 ` David Gibson
2019-09-26 14:44 ` Greg Kurz
2019-09-25 6:45 ` [PATCH 12/20] spapr: Simplify spapr_qirq() handling David Gibson
2019-09-25 7:16 ` Cédric Le Goater
2019-09-25 20:30 ` Greg Kurz
2019-09-26 7:10 ` Philippe Mathieu-Daudé
2019-09-25 6:45 ` [PATCH 13/20] spapr: Eliminate SpaprIrq:get_nodename method David Gibson
2019-09-25 7:19 ` Cédric Le Goater
2019-09-26 7:11 ` Philippe Mathieu-Daudé
2019-09-26 7:48 ` Greg Kurz
2019-09-26 11:36 ` David Gibson
2019-09-25 6:45 ` [PATCH 14/20] spapr: Remove unhelpful tracepoints from spapr_irq_free_xics() David Gibson
2019-09-25 7:20 ` Cédric Le Goater
2019-09-26 7:11 ` Philippe Mathieu-Daudé
2019-09-26 7:50 ` Greg Kurz
2019-09-25 6:45 ` [PATCH 15/20] spapr: Handle freeing of multiple irqs in frontend only David Gibson
2019-09-25 7:21 ` Cédric Le Goater
2019-09-26 7:52 ` Greg Kurz [this message]
2019-09-25 6:45 ` [PATCH 16/20] spapr, xics, xive: Better use of assert()s on irq claim/free paths David Gibson
2019-09-25 7:22 ` Cédric Le Goater
2019-09-26 8:08 ` Greg Kurz
2019-09-26 11:39 ` David Gibson
2019-09-25 6:45 ` [PATCH 17/20] spapr: Remove unused return value in claim path David Gibson
2019-09-25 7:23 ` Cédric Le Goater
2019-09-26 7:13 ` Philippe Mathieu-Daudé
2019-09-26 8:36 ` Greg Kurz
2019-09-27 1:47 ` David Gibson
2019-09-25 6:45 ` [PATCH 18/20] xive: Improve irq claim/free path David Gibson
2019-09-25 7:25 ` Cédric Le Goater
2019-09-26 1:05 ` David Gibson
2019-09-25 6:45 ` [PATCH 19/20] spapr: Use less cryptic representation of which irq backends are supported David Gibson
2019-09-25 7:28 ` Cédric Le Goater
2019-09-26 9:16 ` Greg Kurz
2019-09-25 6:45 ` [PATCH 20/20] spapr: Eliminate SpaprIrq::init hook David Gibson
2019-09-25 7:31 ` Cédric Le Goater
2019-09-26 1:13 ` David Gibson
2019-09-26 7:05 ` Cédric Le Goater
2019-09-26 11:29 ` David Gibson
2019-09-26 15:35 ` Greg Kurz
2019-09-27 5:51 ` David Gibson
2019-09-27 6:23 ` Greg Kurz
2019-09-26 15:39 ` Greg Kurz
2019-09-27 14:12 ` Greg Kurz
2019-09-29 9:34 ` David Gibson
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