Date: Tue, 31 Oct 2017 15:22:27 +0100 From: "Jason A. Donenfeld" <Jason@...c4.com> To: Steven Rostedt <rostedt@...dmis.org> Cc: "Tobin C. Harding" <me@...in.cc>, kernel-hardening@...ts.openwall.com, "Theodore Ts'o" <tytso@....edu>, Linus Torvalds <torvalds@...ux-foundation.org>, Kees Cook <keescook@...omium.org>, Paolo Bonzini <pbonzini@...hat.com>, Tycho Andersen <tycho@...ker.com>, "Roberts, William C" <william.c.roberts@...el.com>, Tejun Heo <tj@...nel.org>, Jordan Glover <Golden_Miller83@...tonmail.ch>, Greg KH <gregkh@...uxfoundation.org>, Petr Mladek <pmladek@...e.com>, Joe Perches <joe@...ches.com>, Ian Campbell <ijc@...lion.org.uk>, Sergey Senozhatsky <sergey.senozhatsky@...il.com>, Catalin Marinas <catalin.marinas@....com>, Will Deacon <wilal.deacon@....com>, Chris Fries <cfries@...gle.com>, Dave Weinstein <olorin@...gle.com>, Daniel Micay <danielmicay@...il.com>, Djalal Harouni <tixxdz@...il.com>, LKML <linux-kernel@...r.kernel.org> Subject: Re: [PATCH v7] printk: hash addresses printed with %p On Mon, Oct 30, 2017 at 9:22 PM, Steven Rostedt <rostedt@...dmis.org> wrote: > How quickly do you need static_branch_disable() executed? You could > always pass the work off to a worker thread (that can schedule). > > random_ready_callback -> initiates worker thread -> enables the static branch I had already suggested that much earlier in the thread, but discounted it in the very same suggestion, because that branch turns out to be not that expensive anyway, and I think it's more important that we're able to print meaningful values as soon as we can, rather than waiting for the scheduler.
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