linux-kernel - [PATCH] arm64: cpuinfo: add AArch64 & elf platform for app compatibility

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Date:	Thu, 19 May 2016 10:44:33 +0800
From:	x00195127 <saberlily.xia@...ilicon.com>
To:	<catalin.marinas@....com>, <will.deacon@....com>
CC:	<linux-arm-kernel@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>, <puck.chen@...ilicon.com>,
	<suzhuangluan@...ilicon.com>, <linaro-kernel@...ts.linaro.org>
Subject: [PATCH] arm64: cpuinfo: add AArch64 & elf platform for app compatibility

we find that some apps will read cpuinfo when start up,
they need the string  as follows:
"Processor       : AArch64 Processor rev 0 (aarch64)"

Then thay could load the corresponding libs. But now
arm64 platform's cpuinfo don't has this now, so
we need add this.

Signed-off-by: Qing Xia <saberlily.xia@...ilicon.com>
---
 arch/arm64/kernel/cpuinfo.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/arm64/kernel/cpuinfo.c b/arch/arm64/kernel/cpuinfo.c
index 3808470..c3527ad 100644
--- a/arch/arm64/kernel/cpuinfo.c
+++ b/arch/arm64/kernel/cpuinfo.c
@@ -114,6 +114,9 @@ static int c_show(struct seq_file *m, void *v)
 		 * online processors, looking for lines beginning with
 		 * "processor".  Give glibc what it expects.
 		 */
+		seq_printf(m, "Processor\t: AArch64 Processor rev %d (%s)\n",
+				read_cpuid_id() & 15, ELF_PLATFORM);
+
 		seq_printf(m, "processor\t: %d\n", i);
 
 		seq_printf(m, "BogoMIPS\t: %lu.%02lu\n",
-- 
1.8.3.2