From: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Date: Tue, 28 Oct 2014 12:24:20 +0000 (+0000)
Subject: arm64/dt: add machine name to kernel call stack dump output
X-Git-Tag: submit/tizen/20160607.132125~3343^2~59
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=d8c6d8b877cb2a216e933ce11954632a9daeb362;p=sdk%2Femulator%2Femulator-kernel.git

arm64/dt: add machine name to kernel call stack dump output

This installs the machine name as recorded by setup_machine_fdt()
as dump stack arch description. This results in the string to be
included in call stack dumps, as is shown here:

  ...
  Bad mode in Synchronous Abort handler detected, code 0x84000005
  CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.18.0-rc2+ #548
> Hardware name: linux,dummy-virt (DT)
  task: ffffffc07c870000 ti: ffffffc07c878000 task.ti: ffffffc07c878000
  PC is at 0x0
  ...

Note that systems that support DMI/SMBIOS may override this later.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
---

diff --git a/arch/arm64/kernel/setup.c b/arch/arm64/kernel/setup.c
index 2437196..cbeaa2f 100644
--- a/arch/arm64/kernel/setup.c
+++ b/arch/arm64/kernel/setup.c
@@ -312,6 +312,7 @@ static void __init setup_machine_fdt(phys_addr_t dt_phys)
 	}
 
 	machine_name = of_flat_dt_get_machine_name();
+	dump_stack_set_arch_desc("%s (DT)", machine_name);
 }
 
 /*