Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758000Ab0DPPYh (ORCPT ); Fri, 16 Apr 2010 11:24:37 -0400 Received: from mx1.redhat.com ([209.132.183.28]:12455 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757123Ab0DPPYg (ORCPT ); Fri, 16 Apr 2010 11:24:36 -0400 Date: Fri, 16 Apr 2010 11:24:10 -0400 From: Jason Baron To: linux-kernel@vger.kernel.org Cc: mingo@elte.hu, mathieu.desnoyers@polymtl.ca, hpa@zytor.com, tglx@linutronix.de, rostedt@goodmis.org, andi@firstfloor.org, roland@redhat.com, rth@redhat.com, mhiramat@redhat.com, fweisbec@gmail.com, avi@redhat.com, davem@davemloft.net, vgoyal@redhat.com Message-Id: Subject: [PATCH 00/11] jump label v7 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 4476 Lines: 111 Hi, Based on David Miller's suggestion this version re-works the architecture interfaces for jump labels. I have also added a documentation file, and re-freshed the patchset against the latest -tip tree. The new architecture interface (quoting from the docs file), is as follows: " 4) architecture interface There are a few functions and macros which arches must implement in order to take advantage of this optimization. As previously mentioned, if there is no architecture support we simply fall back to a traditional, load, test, and jump sequence. * add "HAVE_ARCH_JUMP_LABEL" to arch//Kconfig to indicate support * #define JUMP_LABEL_NOP_SIZE, arch/x86/include/asm/jump_label.h * #define "JUMP_LABEL(tag, label, cond)", arch/x86/include/asm/jump_label.h * add: void arch_jump_label_transform(struct jump_entry *entry, enum jump_label_type type) and const u8 *arch_get_jump_label_nop(void) see: arch/x86/kernel/jump_label.c * finally add a definition for "struct jump_entry". This must be done in a separate .h file, b/c the modpost.c code uses this definition to sort the the jump label tabel in the vmlinux, so that it does not have to be sorted at runtime. see: arch/x86/include/asm/jump_entry.h " David, I re-worked the sparc64 to match the updated interfaces. The code should hopefully compile now, although I did not test the sparc bits. thanks, -Jason David S. Miller (1): sparc64: Add jump_label support Jason Baron (9): jump label: base patch jump label: x86 support jump label: tracepoint support jump label: add module support jump label: move ftrace_dyn_arch_init to common code jump label: sort jump table at build-time jump label: initialize workqueue tracepoints *before* they are registered jump label: jump_label_text_reserved() to reserve our jump points jump label: add docs Mathieu Desnoyers (1): jump label: notifier atomic call chain notrace Documentation/jump-label.txt | 140 +++++++++++ Makefile | 6 +- arch/Kconfig | 3 + arch/sparc/Kconfig | 1 + arch/sparc/include/asm/jump_entry.h | 16 ++ arch/sparc/include/asm/jump_label.h | 21 ++ arch/sparc/kernel/Makefile | 2 + arch/sparc/kernel/jump_label.c | 38 +++ arch/sparc/kernel/module.c | 6 + arch/x86/Kconfig | 1 + arch/x86/include/asm/alternative.h | 14 ++ arch/x86/include/asm/jump_entry.h | 28 +++ arch/x86/include/asm/jump_label.h | 23 ++ arch/x86/kernel/Makefile | 2 +- arch/x86/kernel/alternative.c | 71 ++++++- arch/x86/kernel/ftrace.c | 70 +------ arch/x86/kernel/jump_label.c | 47 ++++ arch/x86/kernel/kprobes.c | 3 +- arch/x86/kernel/module.c | 3 + arch/x86/kernel/ptrace.c | 1 + arch/x86/kernel/setup.c | 3 + include/asm-generic/vmlinux.lds.h | 22 ++- include/linux/jump_label.h | 75 ++++++ include/linux/module.h | 5 +- include/linux/tracepoint.h | 34 ++-- kernel/Makefile | 2 +- kernel/jump_label.c | 431 +++++++++++++++++++++++++++++++++++ kernel/kprobes.c | 3 +- kernel/module.c | 7 + kernel/notifier.c | 6 +- kernel/trace/ftrace.c | 13 +- kernel/trace/trace_workqueue.c | 10 +- kernel/tracepoint.c | 8 + scripts/mod/Makefile | 1 + scripts/mod/modpost.c | 71 ++++++- scripts/mod/modpost.h | 2 + 36 files changed, 1073 insertions(+), 116 deletions(-) create mode 100644 Documentation/jump-label.txt create mode 100644 arch/sparc/include/asm/jump_entry.h create mode 100644 arch/sparc/include/asm/jump_label.h create mode 100644 arch/sparc/kernel/jump_label.c create mode 100644 arch/x86/include/asm/jump_entry.h create mode 100644 arch/x86/include/asm/jump_label.h create mode 100644 arch/x86/kernel/jump_label.c create mode 100644 include/linux/jump_label.h create mode 100644 kernel/jump_label.c -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/