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[96.50.97.138]) by mx.google.com with ESMTPSA id dn5sm5029335pbb.2.2014.08.26.21.29.43 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Tue, 26 Aug 2014 21:29:45 -0700 (PDT) From: behanw@converseincode.com To: ard.biesheuvel@linaro.org, catalin.marinas@arm.com, cl@linux-foundation.org, jays.lee@samsung.com, k.khlebnikov@samsung.com, larry.bassel@linaro.org, olof@lixom.net, peterz@infradead.org, takahiro.akashi@linaro.org, tglx@linutronix.de, tj@kernel.org, will.deacon@arm.com Subject: [PATCH V2 2/6] arm64: LLVMLinux: Use current_stack_pointer in save_stack_trace_tsk Date: Tue, 26 Aug 2014 21:29:30 -0700 Message-Id: <1409113774-3172-3-git-send-email-behanw@converseincode.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1409113774-3172-1-git-send-email-behanw@converseincode.com> References: <20140826141608.GT23445@arm.com> <1409113774-3172-1-git-send-email-behanw@converseincode.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20140826_213007_445465_86F5F4E1 X-CRM114-Status: GOOD ( 11.10 ) X-Spam-Score: -0.8 (/) X-Spam-Report: SpamAssassin version 3.4.0 on bombadil.infradead.org summary: Content analysis details: (-0.8 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at http://www.dnswl.org/, low trust [2607:f8b0:400e:c02:0:0:0:234 listed in] [list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid Cc: khilman@linaro.org, linux-kernel@vger.kernel.org, kgene.kim@samsung.com, christoffer.dall@linaro.org, Mark Charlebois , sungjinn.chung@samsung.com, linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+incoming-imx=patchwork.ozlabs.org@lists.infradead.org List-Id: linux-imx-kernel.lists.patchwork.ozlabs.org From: Behan Webster Use the global current_stack_pointer to get the value of the stack pointer. This change supports being able to compile the kernel with both gcc and clang. Signed-off-by: Behan Webster Signed-off-by: Mark Charlebois Reviewed-by: Jan-Simon Möller Reviewed-by: Olof Johansson Acked-by: Will Deacon --- arch/arm64/kernel/stacktrace.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/arch/arm64/kernel/stacktrace.c b/arch/arm64/kernel/stacktrace.c index 55437ba..407991b 100644 --- a/arch/arm64/kernel/stacktrace.c +++ b/arch/arm64/kernel/stacktrace.c @@ -111,10 +111,9 @@ void save_stack_trace_tsk(struct task_struct *tsk, struct stack_trace *trace) frame.sp = thread_saved_sp(tsk); frame.pc = thread_saved_pc(tsk); } else { - register unsigned long current_sp asm("sp"); data.no_sched_functions = 0; frame.fp = (unsigned long)__builtin_frame_address(0); - frame.sp = current_sp; + frame.sp = current_stack_pointer; frame.pc = (unsigned long)save_stack_trace_tsk; }