From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Grant Likely <grant.likely@secretlab.ca>
Cc: linux-kernel@vger.kernel.org, Milton Miller <miltonm@bga.com>,
Paul Mundt <lethal@linux-sh.org>,
Thomas Gleixner <tglx@linutronix.de>,
Rob Herring <rob.herring@calxeda.com>
Subject: Re: [PATCH 02/12] irqdomain: Always update revmap when setting up a virq
Date: Sat, 16 Jun 2012 15:57:57 +1000 [thread overview]
Message-ID: <1339826277.9220.220.camel@pasglop> (raw)
In-Reply-To: <1339822897-15840-3-git-send-email-grant.likely@secretlab.ca>
On Fri, 2012-06-15 at 23:01 -0600, Grant Likely wrote:
> At irq_setup_virq() time all of the data needed to update the reverse
> map is available, but the current code ignores it and relies upon the
> slow path to insert revmap records. This patch adds revmap updating
> to the setup path so the slow path will no longer be necessary.
See my comments in patch 4...
Cheers,
Ben.
> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
> Cc: Paul Mundt <lethal@linux-sh.org>
> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> Cc: Thomas Gleixner <tglx@linutronix.de>
> Cc: Rob Herring <rob.herring@calxeda.com>
> ---
> kernel/irq/irqdomain.c | 10 ++++++++++
> 1 file changed, 10 insertions(+)
>
> diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c
> index 4161d2a..5c36722 100644
> --- a/kernel/irq/irqdomain.c
> +++ b/kernel/irq/irqdomain.c
> @@ -393,6 +393,16 @@ static int irq_setup_virq(struct irq_domain *domain, unsigned int virq,
> return -1;
> }
>
> + switch (domain->revmap_type) {
> + case IRQ_DOMAIN_MAP_LINEAR:
> + if (hwirq < domain->revmap_data.linear.size)
> + domain->revmap_data.linear.revmap[hwirq] = virq;
> + break;
> + case IRQ_DOMAIN_MAP_TREE:
> + irq_radix_revmap_insert(domain, virq, hwirq);
> + break;
> + }
> +
> irq_clear_status_flags(virq, IRQ_NOREQUEST);
>
> return 0;
next prev parent reply other threads:[~2012-06-16 5:58 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-16 5:01 [PATCH 00/12] irqdomain cleanup and refactoring Grant Likely
2012-06-16 5:01 ` [PATCH 01/12] irqdomain: Split disassociating code into separate function Grant Likely
2012-06-16 5:57 ` Benjamin Herrenschmidt
2012-06-16 5:01 ` [PATCH 02/12] irqdomain: Always update revmap when setting up a virq Grant Likely
2012-06-16 5:57 ` Benjamin Herrenschmidt [this message]
2012-06-16 5:01 ` [PATCH 03/12] irqdomain: Support for static IRQ mapping and association Grant Likely
2012-06-16 5:58 ` Benjamin Herrenschmidt
2012-06-17 22:16 ` Grant Likely
2012-06-16 5:01 ` [PATCH 04/12] irqdomain: Eliminate dedicated radix lookup functions Grant Likely
2012-06-16 5:56 ` Benjamin Herrenschmidt
2012-06-16 6:12 ` Grant Likely
2012-06-17 21:58 ` Grant Likely
2012-06-16 5:01 ` [PATCH 05/12] irqdomain: Fix irq_create_direct_mapping() to test irq_domain type Grant Likely
2012-06-16 5:01 ` [PATCH 06/12] irqdomain: eliminate slow-path revmap lookups Grant Likely
2012-06-16 5:01 ` [PATCH 07/12] irqdomain: Make ops->map hook optional Grant Likely
2012-06-16 5:59 ` Benjamin Herrenschmidt
2012-06-16 5:01 ` [PATCH 08/12] irqdomain: Replace LEGACY mapping with LINEAR Grant Likely
2012-06-16 6:01 ` Benjamin Herrenschmidt
2012-06-16 6:16 ` Grant Likely
2012-06-18 12:23 ` Mark Brown
2012-06-16 5:01 ` [PATCH 09/12] irqdomain: Reserve IRQs for legacy domain Grant Likely
2012-06-16 5:01 ` [PATCH 10/12] irqdomain: Add debugging message Grant Likely
2012-06-16 6:02 ` Benjamin Herrenschmidt
2012-06-16 5:01 ` [PATCH 11/12] irqdomain: reorganize revmap data Grant Likely
2012-06-16 6:06 ` Benjamin Herrenschmidt
2012-06-16 6:19 ` Grant Likely
2012-06-16 6:20 ` Grant Likely
2012-06-16 5:01 ` [PATCH 12/12] irqdomain: merge linear and tree reverse mappings Grant Likely
2012-06-18 12:28 ` [PATCH 00/12] irqdomain cleanup and refactoring Mark Brown
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1339826277.9220.220.camel@pasglop \
--to=benh@kernel.crashing.org \
--cc=grant.likely@secretlab.ca \
--cc=lethal@linux-sh.org \
--cc=linux-kernel@vger.kernel.org \
--cc=miltonm@bga.com \
--cc=rob.herring@calxeda.com \
--cc=tglx@linutronix.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.