From: Nathan Lynch via B4 Relay <devnull+nathanl.linux.ibm.com@kernel.org>
To: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>,
"Naveen N. Rao" <naveen.n.rao@linux.ibm.com>,
Brian King <brking@linux.ibm.com>,
Christophe Leroy <christophe.leroy@csgroup.eu>,
John Ogness <john.ogness@linutronix.de>,
Michael Ellerman <mpe@ellerman.id.au>,
Nicholas Piggin <npiggin@gmail.com>,
Petr Mladek <pmladek@suse.com>,
Sergey Senozhatsky <senozhatsky@chromium.org>,
Steven Rostedt <rostedt@goodmis.org>
Cc: Nathan Lynch <nathanl@linux.ibm.com>,
linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org
Subject: [PATCH RFC 1/5] dump_stack: Make arch description buffer __ro_after_init
Date: Thu, 18 Jan 2024 09:25:12 -0600 [thread overview]
Message-ID: <20240118-update-dump-stack-arch-str-v1-1-5c0f98d017b5@linux.ibm.com> (raw)
In-Reply-To: <20240118-update-dump-stack-arch-str-v1-0-5c0f98d017b5@linux.ibm.com>
From: Nathan Lynch <nathanl@linux.ibm.com>
The static hardware description buffer is populated by arch code
during boot and should not change afterwards, so mark it
__ro_after_init.
Signed-off-by: Nathan Lynch <nathanl@linux.ibm.com>
---
lib/dump_stack.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/lib/dump_stack.c b/lib/dump_stack.c
index 83471e81501a..1057f102f6f2 100644
--- a/lib/dump_stack.c
+++ b/lib/dump_stack.c
@@ -6,6 +6,7 @@
#include <linux/kernel.h>
#include <linux/buildid.h>
+#include <linux/cache.h>
#include <linux/export.h>
#include <linux/sched.h>
#include <linux/sched/debug.h>
@@ -15,7 +16,7 @@
#include <linux/utsname.h>
#include <linux/stop_machine.h>
-static char dump_stack_arch_desc_str[128];
+static char dump_stack_arch_desc_str[128] __ro_after_init;
/**
* dump_stack_set_arch_desc - set arch-specific str to show with task dumps
--
2.43.0
next prev parent reply other threads:[~2024-01-18 15:26 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-01-18 15:25 [PATCH RFC 0/5] dump_stack: Allow runtime updates of the hardware description Nathan Lynch via B4 Relay
2024-01-18 15:25 ` Nathan Lynch via B4 Relay [this message]
2024-01-18 15:25 ` [PATCH RFC 2/5] dump_stack: Allow update of arch description string at runtime Nathan Lynch via B4 Relay
2024-01-18 15:25 ` [PATCH RFC 3/5] powerpc/prom: Add CPU info to hardware description string later Nathan Lynch via B4 Relay
2024-01-18 15:25 ` [PATCH RFC 4/5] powerpc/pseries: Prepare pseries_add_hw_description() for runtime use Nathan Lynch via B4 Relay
2024-01-18 15:25 ` [PATCH RFC 5/5] powerpc/pseries: Update hardware description string after migration Nathan Lynch via B4 Relay
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