From: Michael Ellerman <mpe@ellerman.id.au>
To: <linuxppc-dev@ozlabs.org>
Cc: tj@kernel.org, Andrew Morton <akpm@osdl.org>,
linux-kernel@vger.kernel.org, Anton Blanchard <anton@samba.org>
Subject: [PATCH 3/6] powerpc: Add device-tree model to dump stack arch description
Date: Tue, 5 May 2015 21:12:14 +1000 [thread overview]
Message-ID: <1430824337-15339-3-git-send-email-mpe@ellerman.id.au> (raw)
In-Reply-To: <1430824337-15339-1-git-send-email-mpe@ellerman.id.au>
As soon as we know the model of the machine we're on, add it to the dump
stack arch description, which is printed in case of an oops.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
---
arch/powerpc/kernel/prom.c | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index 308c5e15676b..a8ac55f7bd7b 100644
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -34,6 +34,7 @@
#include <linux/of.h>
#include <linux/of_fdt.h>
#include <linux/libfdt.h>
+#include <linux/printk.h>
#include <asm/prom.h>
#include <asm/rtas.h>
@@ -642,6 +643,23 @@ static void __init early_reserve_mem(void)
#endif
}
+static int __init
+early_init_dt_scan_model(unsigned long node, const char *uname,
+ int depth, void *data)
+{
+ const char *prop;
+
+ if (depth != 0)
+ return 0;
+
+ prop = of_get_flat_dt_prop(node, "model", NULL);
+ if (prop)
+ dump_stack_add_arch_desc(prop);
+
+ /* break now */
+ return 1;
+}
+
void __init early_init_devtree(void *params)
{
phys_addr_t limit;
@@ -652,6 +670,8 @@ void __init early_init_devtree(void *params)
if (!early_init_dt_verify(params))
panic("BUG: Failed verifying flat device tree, bad version?");
+ of_scan_flat_dt(early_init_dt_scan_model, NULL);
+
#ifdef CONFIG_PPC_RTAS
/* Some machines might need RTAS info for debugging, grab it now. */
of_scan_flat_dt(early_init_dt_scan_rtas, NULL);
--
2.1.0
next prev parent reply other threads:[~2015-05-05 11:12 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-05 11:12 [PATCH 1/6] dump_stack: Support adding to the dump stack arch description Michael Ellerman
2015-05-05 11:12 ` [PATCH 2/6] powerpc: Add cpu name to " Michael Ellerman
2015-05-06 23:50 ` Michael Neuling
2015-05-05 11:12 ` Michael Ellerman [this message]
2015-05-05 11:12 ` [PATCH 4/6] powerpc: Add ppc_md.name " Michael Ellerman
2015-05-05 11:12 ` [PATCH 5/6] powerpc/powernv: Add opal details " Michael Ellerman
2015-05-05 11:12 ` [PATCH 6/6] powerpc/pseries: Add firmware " Michael Ellerman
2015-05-05 21:16 ` [PATCH 1/6] dump_stack: Support adding to the " Andrew Morton
2015-05-06 0:13 ` Michael Ellerman
2015-05-08 6:59 ` Michael Ellerman
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