Unnamed repository; edit this file 'description' to name the repository. https://gitea.privatedns.org/xavi/android_kernel_m2note/atom?h=o-8.1 2017-07-11T11:46:33+00:00 2017-07-11T11:46:33+00:00 Lorenzo Pieralisi Lorenzo.Pieralisi@arm.com 2014-07-17T17:19:20+00:00 urn:sha1:2f8ef1972f1285f293fd24cc00b17e4296ca8419 Suspend init function must be marked as __init, since it is not needed after the kernel has booted. This patch moves the cpu_suspend_init() function to the __init section. Change-Id: I380b7013eb68ecf7bc0abe11dc5442142310f1b1 Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Git-commit: 18ab7db6b749ac27aac08d572afbbd2f4d937934 Git-repo: https://git.kernel.org/scm/linux/kernel/git/stable/linux-stable.git Signed-off-by: Mahesh Sivasubramanian <msivasub@codeaurora.org> Signed-off-by: Archana Sathyakumar <asathyak@codeaurora.org> Signed-off-by: Murali Nalajala <mnalajal@codeaurora.org> Signed-off-by: Maulik Shah <mkshah@codeaurora.org> 2016-09-10T10:07:00+00:00 Lorenzo Pieralisi lorenzo.pieralisi@arm.com 2015-11-17T11:50:51+00:00 urn:sha1:74b506e3a314f16948d52cc4972c3b00520e6753 The function graph tracer adds instrumentation that is required to trace both entry and exit of a function. In particular the function graph tracer updates the "return address" of a function in order to insert a trace callback on function exit. Kernel power management functions like cpu_suspend() are called upon power down entry with functions called "finishers" that are in turn called to trigger the power down sequence but they may not return to the kernel through the normal return path. When the core resumes from low-power it returns to the cpu_suspend() function through the cpu_resume path, which leaves the trace stack frame set-up by the function tracer in an incosistent state upon return to the kernel when tracing is enabled. This patch fixes the issue by pausing/resuming the function graph tracer on the thread executing cpu_suspend() (ie the function call that subsequently triggers the "suspend finishers"), so that the function graph tracer state is kept consistent across functions that enter power down states and never return by effectively disabling graph tracer while they are executing. Fixes: 819e50e25d0c ("arm64: Add ftrace support") Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reported-by: Catalin Marinas <catalin.marinas@arm.com> Reported-by: AKASHI Takahiro <takahiro.akashi@linaro.org> Suggested-by: Steven Rostedt <rostedt@goodmis.org> Acked-by: Steven Rostedt <rostedt@goodmis.org> Cc: Will Deacon <will.deacon@arm.com> Cc: <stable@vger.kernel.org> # 3.16+ Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com> 2016-08-15T02:19:42+00:00 Meizu OpenSource patchwork@meizu.com 2016-08-15T02:19:42+00:00 urn:sha1:d2e1446d81725c351dc73a03b397ce043fb18452