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Date: Fri, 21 Nov 2014 17:35:10 -0800 From: Linus Torvalds <torvalds@...ux-foundation.org> To: Steven Rostedt <rostedt@...dmis.org> Cc: LKML <linux-kernel@...r.kernel.org>, Andrew Morton <akpm@...ux-foundation.org>, Ingo Molnar <mingo@...nel.org>, "H. Peter Anvin" <hpa@...or.com>, Thomas Gleixner <tglx@...utronix.de>, stable <stable@...r.kernel.org> Subject: Re: [GIT PULL] ftrace/x86: Add frames pointers to trampoline as necessary On Fri, Nov 21, 2014 at 6:50 AM, Steven Rostedt <rostedt@...dmis.org> wrote: > +.macro create_frame parent rip > +#ifdef CC_USING_FENTRY > + pushq \parent > + pushq %rbp > + movq %rsp, %rbp This is a very strange frame. Why do you do the "pushq \parent" at all? Why isn't this just a *real* frame and add it to MCOUNT_SAVE_FRAME. You seem to create this fake frame-within-a-frame thing. It's not clear why. Linus -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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