From: sboyd@codeaurora•org (Stephen Boyd)
To: linux-arm-kernel@lists•infradead.org
Subject: [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: 29+ 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 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 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
[not found] ` <1406306692-7135-1-git-send-email-sudeep.holla@arm.com>
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 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
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