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McKenney" , Boqun Feng , Andy Lutomirski , Dave Watson , linux-kernel@vger.kernel.org, linux-api@vger.kernel.org, Paul Turner , Andrew Morton , Russell King , Thomas Gleixner , Ingo Molnar , "H . Peter Anvin" , Andrew Hunter , Andi Kleen , Chris Lameter , Ben Maurer , Steven Rostedt , Josh Triplett , Linus Torvalds , Catalin Marinas , Will Deacon , Michael Kerrisk , Joel Fernandes , Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , linuxppc-dev@lists.ozlabs.org Subject: Re: [PATCH 07/14] powerpc: Add support for restartable sequences Message-ID: <20180516161837.GI12198@hirez.programming.kicks-ass.net> References: <20180430224433.17407-1-mathieu.desnoyers@efficios.com> <20180430224433.17407-8-mathieu.desnoyers@efficios.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180430224433.17407-8-mathieu.desnoyers@efficios.com> User-Agent: Mutt/1.9.5 (2018-04-13) Sender: linux-api-owner@vger.kernel.org X-Mailing-List: linux-api@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: On Mon, Apr 30, 2018 at 06:44:26PM -0400, Mathieu Desnoyers wrote: > diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig > index c32a181a7cbb..ed21a777e8c6 100644 > --- a/arch/powerpc/Kconfig > +++ b/arch/powerpc/Kconfig > @@ -223,6 +223,7 @@ config PPC > select HAVE_SYSCALL_TRACEPOINTS > select HAVE_VIRT_CPU_ACCOUNTING > select HAVE_IRQ_TIME_ACCOUNTING > + select HAVE_RSEQ > select IRQ_DOMAIN > select IRQ_FORCED_THREADING > select MODULES_USE_ELF_RELA > diff --git a/arch/powerpc/kernel/signal.c b/arch/powerpc/kernel/signal.c > index 61db86ecd318..d3bb3aaaf5ac 100644 > --- a/arch/powerpc/kernel/signal.c > +++ b/arch/powerpc/kernel/signal.c > @@ -133,6 +133,8 @@ static void do_signal(struct task_struct *tsk) > /* Re-enable the breakpoints for the signal stack */ > thread_change_pc(tsk, tsk->thread.regs); > > + rseq_signal_deliver(tsk->thread.regs); > + > if (is32) { > if (ksig.ka.sa.sa_flags & SA_SIGINFO) > ret = handle_rt_signal32(&ksig, oldset, tsk); > @@ -164,6 +166,7 @@ void do_notify_resume(struct pt_regs *regs, unsigned long thread_info_flags) > if (thread_info_flags & _TIF_NOTIFY_RESUME) { > clear_thread_flag(TIF_NOTIFY_RESUME); > tracehook_notify_resume(regs); > + rseq_handle_notify_resume(regs); > } > > user_enter(); Again no rseq_syscall(). From mboxrd@z Thu Jan 1 00:00:00 1970 From: Peter Zijlstra Subject: Re: [PATCH 07/14] powerpc: Add support for restartable sequences Date: Wed, 16 May 2018 18:18:37 +0200 Message-ID: <20180516161837.GI12198@hirez.programming.kicks-ass.net> References: <20180430224433.17407-1-mathieu.desnoyers@efficios.com> <20180430224433.17407-8-mathieu.desnoyers@efficios.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <20180430224433.17407-8-mathieu.desnoyers@efficios.com> Sender: linux-kernel-owner@vger.kernel.org To: Mathieu Desnoyers Cc: "Paul E . McKenney" , Boqun Feng , Andy Lutomirski , Dave Watson , linux-kernel@vger.kernel.org, linux-api@vger.kernel.org, Paul Turner , Andrew Morton , Russell King , Thomas Gleixner , Ingo Molnar , "H . Peter Anvin" , Andrew Hunter , Andi Kleen , Chris Lameter , Ben Maurer , Steven Rostedt , Josh Triplett , Linus Torvalds , Catalin Marinas , Will Deacon List-Id: linux-api@vger.kernel.org On Mon, Apr 30, 2018 at 06:44:26PM -0400, Mathieu Desnoyers wrote: > diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig > index c32a181a7cbb..ed21a777e8c6 100644 > --- a/arch/powerpc/Kconfig > +++ b/arch/powerpc/Kconfig > @@ -223,6 +223,7 @@ config PPC > select HAVE_SYSCALL_TRACEPOINTS > select HAVE_VIRT_CPU_ACCOUNTING > select HAVE_IRQ_TIME_ACCOUNTING > + select HAVE_RSEQ > select IRQ_DOMAIN > select IRQ_FORCED_THREADING > select MODULES_USE_ELF_RELA > diff --git a/arch/powerpc/kernel/signal.c b/arch/powerpc/kernel/signal.c > index 61db86ecd318..d3bb3aaaf5ac 100644 > --- a/arch/powerpc/kernel/signal.c > +++ b/arch/powerpc/kernel/signal.c > @@ -133,6 +133,8 @@ static void do_signal(struct task_struct *tsk) > /* Re-enable the breakpoints for the signal stack */ > thread_change_pc(tsk, tsk->thread.regs); > > + rseq_signal_deliver(tsk->thread.regs); > + > if (is32) { > if (ksig.ka.sa.sa_flags & SA_SIGINFO) > ret = handle_rt_signal32(&ksig, oldset, tsk); > @@ -164,6 +166,7 @@ void do_notify_resume(struct pt_regs *regs, unsigned long thread_info_flags) > if (thread_info_flags & _TIF_NOTIFY_RESUME) { > clear_thread_flag(TIF_NOTIFY_RESUME); > tracehook_notify_resume(regs); > + rseq_handle_notify_resume(regs); > } > > user_enter(); Again no rseq_syscall().