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Message-ID: <1363548972.25967.137.camel@gandalf.local.home> Date: Sun, 17 Mar 2013 15:36:12 -0400 From: Steven Rostedt <rostedt@...dmis.org> To: Oleg Nesterov <oleg@...hat.com> Cc: Andrew Morton <akpm@...ux-foundation.org>, Ingo Molnar <mingo@...e.hu>, Frederic Weisbecker <fweisbec@...il.com>, linux-kernel@...r.kernel.org, "H. Peter Anvin" <hpa@...ux.intel.com>, linux-arch <linux-arch@...r.kernel.org> Subject: Re: [PATCH 2/2] tracing: syscall_regfunc() should not skip kernel threads On Sun, 2013-03-17 at 20:04 +0100, Oleg Nesterov wrote: > > I'm really thinking the TIF_SYSCALL_TRACEPOINT flag is getting a bit > > ridiculous. We really should have a "swap syscall table when tracepoints > > enabled" that changes the syscall table that does exactly the same thing > > as the normal table but wraps the system call with the tracepoints. > > But we also need to force the slow path in system_call... Why? If we remove the tracepoint from the slowpath and use a table swap, then we wouldn't need to use the slowpath at all. > > Anyway, do you agree with this change for now? Well, if it's solving a bug today sure. But we should really be looking at fixing what's there for the future. -- Steve -- 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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