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[2001:470:27:1fa::2]) by smtp.gmail.com with ESMTPSA id x16sm38677ljd.69.2019.11.12.14.45.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 12 Nov 2019 14:45:16 -0800 (PST) From: Max Filippov To: linux-xtensa@linux-xtensa.org Cc: Chris Zankel , linux-kernel@vger.kernel.org, Dmitry Safonov , Petr Mladek , Joe Perches , Max Filippov Subject: [PATCH v3 2/2] xtensa: make stack dump size configurable Date: Tue, 12 Nov 2019 14:44:43 -0800 Message-Id: <20191112224443.12267-3-jcmvbkbc@gmail.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191112224443.12267-1-jcmvbkbc@gmail.com> References: <20191112224443.12267-1-jcmvbkbc@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Introduce Kconfig symbol PRINT_STACK_DEPTH and use it to initialize kstack_depth_to_print. Reviewed-by: Petr Mladek Signed-off-by: Max Filippov --- Changes v2->v3: - split Kconfig change into separate patch arch/xtensa/Kconfig.debug | 7 +++++++ arch/xtensa/kernel/traps.c | 2 +- 2 files changed, 8 insertions(+), 1 deletion(-) diff --git a/arch/xtensa/Kconfig.debug b/arch/xtensa/Kconfig.debug index 39de98e20018..83cc8d12fa0e 100644 --- a/arch/xtensa/Kconfig.debug +++ b/arch/xtensa/Kconfig.debug @@ -31,3 +31,10 @@ config S32C1I_SELFTEST It is easy to make wrong hardware configuration, this test should catch it early. Say 'N' on stable hardware. + +config PRINT_STACK_DEPTH + int "Stack depth to print" if DEBUG_KERNEL + default 64 + help + This option allows you to set the stack depth that the kernel + prints in stack traces. diff --git a/arch/xtensa/kernel/traps.c b/arch/xtensa/kernel/traps.c index be26ec6c0e0e..87bd68dd7687 100644 --- a/arch/xtensa/kernel/traps.c +++ b/arch/xtensa/kernel/traps.c @@ -495,7 +495,7 @@ void show_trace(struct task_struct *task, unsigned long *sp) #define STACK_DUMP_ENTRY_SIZE 4 #define STACK_DUMP_LINE_SIZE 32 -static size_t kstack_depth_to_print = 24; +static size_t kstack_depth_to_print = CONFIG_PRINT_STACK_DEPTH; void show_stack(struct task_struct *task, unsigned long *sp) { -- 2.20.1