From: Catalin Marinas <catalin.marinas@arm.com>
To: Suzuki K Poulose <suzuki.poulose@arm.com>
Cc: will.deacon@arm.com, mark.rutland@arm.com,
steve.capper@linaro.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v6] arm64: cpuinfo: Expose MIDR_EL1 and REVIDR_EL1 to sysfs
Date: Tue, 28 Jun 2016 16:33:46 +0100 [thread overview]
Message-ID: <20160628153346.GF4585@e104818-lin.cambridge.arm.com> (raw)
In-Reply-To: <1466507556-9027-1-git-send-email-suzuki.poulose@arm.com>
On Tue, Jun 21, 2016 at 12:12:36PM +0100, Suzuki K. Poulose wrote:
> +#define CPUINFO_ATTR_RO(_name) \
> + static ssize_t show_##_name(struct device *dev, \
> + struct device_attribute *attr, char *buf) \
> + { \
> + struct cpuinfo_arm64 *info = &per_cpu(cpu_data, dev->id); \
> + \
> + if (info->reg_midr) \
> + return sprintf(buf, "0x%016x\n", info->reg_##_name); \
> + else \
> + return 0; \
> + } \
> + static DEVICE_ATTR(_name, 0444, show_##_name, NULL)
> +
> +CPUINFO_ATTR_RO(midr);
> +CPUINFO_ATTR_RO(revidr);
Since exposing these values is aimed at JIT code (and not human
readable), wouldn't it make more sense to present the binary value
instead of the ascii transformation?
--
Catalin
next prev parent reply other threads:[~2016-06-28 15:33 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-21 11:12 [PATCH v6] arm64: cpuinfo: Expose MIDR_EL1 and REVIDR_EL1 to sysfs Suzuki K Poulose
2016-06-28 11:06 ` Will Deacon
2016-06-28 14:17 ` Catalin Marinas
2016-06-28 15:33 ` Catalin Marinas [this message]
2016-06-28 16:14 ` Suzuki K Poulose
2016-06-28 16:27 ` Mark Rutland
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