From: Stephen Boyd <sboyd@codeaurora.org>
To: Sudeep Holla <sudeep.holla@arm.com>
Cc: linux-kernel@vger.kernel.org,
Heiko Carstens <heiko.carstens@de.ibm.com>,
Lorenzo Pieralisi <Lorenzo.Pieralisi@arm.com>,
Russell King <linux@arm.linux.org.uk>,
Will Deacon <will.deacon@arm.com>,
Nicolas Pitre <nicolas.pitre@linaro.org>,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH 8/9] ARM: kernel: add support for cpu cache information
Date: Wed, 25 Jun 2014 17:19:12 -0700 [thread overview]
Message-ID: <53AB6700.2060807@codeaurora.org> (raw)
In-Reply-To: <1403717444-23559-9-git-send-email-sudeep.holla@arm.com>
On 06/25/14 10:30, Sudeep Holla wrote:
> +
> +/*
> + * Which cache CCSIDR represents depends on CSSELR value
> + * Make sure no one else changes CSSELR during this
> + * smp_call_function_single prevents preemption for us
> + */
Where's the smp_call_function_single() or preemption disable happening?
> +static inline u32 get_ccsidr(u32 csselr)
> +{
> + u32 ccsidr;
> +
> + /* Put value into CSSELR */
> + asm volatile ("mcr p15, 2, %0, c0, c0, 0" : : "r" (csselr));
> + isb();
> + /* Read result out of CCSIDR */
> + asm volatile ("mrc p15, 1, %0, c0, c0, 0" : "=r" (ccsidr));
> +
> + return ccsidr;
> +}
> +
--
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
hosted by The Linux Foundation
next prev parent reply other threads:[~2014-06-26 0:19 UTC|newest]
Thread overview: 71+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-25 17:30 [PATCH 0/9] drivers: cacheinfo support Sudeep Holla
2014-06-25 17:30 ` [PATCH 1/9] drivers: base: add new class "cpu" to group cpu devices Sudeep Holla
2014-06-25 17:30 ` [PATCH 2/9] drivers: base: support cpu cache information interface to userspace via sysfs Sudeep Holla
2014-06-25 22:23 ` Russell King - ARM Linux
2014-06-26 18:41 ` Sudeep Holla
2014-06-26 18:50 ` Russell King - ARM Linux
2014-06-26 19:03 ` Sudeep Holla
2014-07-10 0:09 ` Greg Kroah-Hartman
2014-07-10 13:37 ` Sudeep Holla
2014-06-25 17:30 ` [PATCH 3/9] ia64: move cacheinfo sysfs to generic cacheinfo infrastructure Sudeep Holla
2014-06-25 17:30 ` [PATCH 4/9] s390: " Sudeep Holla
2014-06-25 17:30 ` [PATCH 5/9] x86: " Sudeep Holla
2014-06-25 17:30 ` [PATCH 6/9] powerpc: " Sudeep Holla
2014-06-25 17:30 ` [PATCH 7/9] ARM64: kernel: add support for cpu cache information Sudeep Holla
2014-06-27 10:36 ` Mark Rutland
2014-06-27 11:22 ` Sudeep Holla
2014-06-27 11:34 ` Mark Rutland
2014-06-25 17:30 ` [PATCH 8/9] ARM: " Sudeep Holla
2014-06-25 22:33 ` Russell King - ARM Linux
2014-06-26 11:33 ` Sudeep Holla
2014-06-26 0:19 ` Stephen Boyd [this message]
2014-06-26 11:36 ` Sudeep Holla
2014-06-26 18:45 ` Stephen Boyd
2014-06-27 9:38 ` Sudeep Holla
2014-06-25 17:30 ` [PATCH 9/9] ARM: kernel: add outer cache support for cacheinfo implementation Sudeep Holla
2014-06-25 22:37 ` Russell King - ARM Linux
2014-06-26 13:02 ` Sudeep Holla
2014-07-25 16:44 ` [PATCH v2 0/9] drivers: cacheinfo support Sudeep Holla
2014-07-25 16:44 ` [PATCH v2 1/9] drivers: base: add new class "cpu" to group cpu devices Sudeep Holla
2014-07-25 19:09 ` Stephen Boyd
2014-07-28 13:37 ` Sudeep Holla
2014-07-25 16:44 ` [PATCH v2 2/9] drivers: base: support cpu cache information interface to userspace via sysfs Sudeep Holla
2014-07-29 23:09 ` Stephen Boyd
2014-07-30 16:23 ` Sudeep Holla
2014-07-31 19:46 ` Stephen Boyd
2014-08-05 18:15 ` Sudeep Holla
2014-07-25 16:44 ` [PATCH v2 3/9] ia64: move cacheinfo sysfs to generic cacheinfo infrastructure Sudeep Holla
2014-07-25 16:44 ` [PATCH v2 4/9] s390: " Sudeep Holla
2014-07-25 16:44 ` [PATCH v2 5/9] x86: " Sudeep Holla
2014-07-25 16:44 ` [PATCH v2 6/9] powerpc: " Sudeep Holla
2014-07-25 16:44 ` [PATCH v2 7/9] ARM64: kernel: add support for cpu cache information Sudeep Holla
2014-07-25 16:44 ` [PATCH v2 8/9] ARM: " Sudeep Holla
2014-07-25 16:44 ` [PATCH v2 9/9] ARM: kernel: add outer cache support for cacheinfo implementation Sudeep Holla
2014-08-21 10:59 ` [PATCH v3 00/11] drivers: cacheinfo support Sudeep Holla
2014-08-21 10:59 ` [PATCH v3 01/11] cpumask: factor out show_cpumap into separate helper function Sudeep Holla
2014-08-21 10:59 ` [PATCH v3 02/11] topology: replace custom attribute macros with standard DEVICE_ATTR* Sudeep Holla
2014-08-21 10:59 ` [PATCH v3 03/11] drivers: base: add new class "cpu" to group cpu devices Sudeep Holla
2014-08-21 11:20 ` David Herrmann
2014-08-21 12:30 ` Sudeep Holla
2014-08-21 12:37 ` David Herrmann
2014-08-21 14:54 ` Sudeep Holla
2014-08-22 9:12 ` Kay Sievers
2014-08-22 11:29 ` [PATCH] drivers: base: add cpu_device_create to support per-cpu devices Sudeep Holla
2014-08-22 11:37 ` David Herrmann
2014-08-22 11:41 ` David Herrmann
2014-08-22 12:33 ` Sudeep Holla
2014-08-26 16:54 ` Sudeep Holla
2014-08-26 17:08 ` David Herrmann
2014-08-22 12:17 ` Sudeep Holla
2014-09-02 17:22 ` Sudeep Holla
2014-09-02 17:26 ` Greg Kroah-Hartman
2014-09-02 17:40 ` Sudeep Holla
2014-09-02 17:55 ` Greg Kroah-Hartman
2014-08-21 10:59 ` [PATCH v3 04/11] drivers: base: support cpu cache information interface to userspace via sysfs Sudeep Holla
2014-08-21 10:59 ` [PATCH v3 05/11] ia64: move cacheinfo sysfs to generic cacheinfo infrastructure Sudeep Holla
2014-08-21 10:59 ` [PATCH v3 06/11] s390: " Sudeep Holla
2014-08-21 10:59 ` [PATCH v3 07/11] x86: " Sudeep Holla
2014-08-21 10:59 ` [PATCH v3 08/11] powerpc: " Sudeep Holla
2014-08-21 10:59 ` [PATCH v3 09/11] ARM64: kernel: add support for cpu cache information Sudeep Holla
2014-08-21 10:59 ` [PATCH v3 10/11] ARM: " Sudeep Holla
2014-08-21 10:59 ` [PATCH v3 11/11] ARM: kernel: add outer cache support for cacheinfo implementation Sudeep Holla
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=53AB6700.2060807@codeaurora.org \
--to=sboyd@codeaurora.org \
--cc=Lorenzo.Pieralisi@arm.com \
--cc=heiko.carstens@de.ibm.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux@arm.linux.org.uk \
--cc=nicolas.pitre@linaro.org \
--cc=sudeep.holla@arm.com \
--cc=will.deacon@arm.com \
/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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).