linux-kernel - [PATCH 0/6] hw_breakpoint: Let the user choose not to build it (and perf too)

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Message-Id: <1303923602-2923-1-git-send-email-fweisbec@gmail.com>
Date:	Wed, 27 Apr 2011 18:59:56 +0200
From:	Frederic Weisbecker <fweisbec@...il.com>
To:	LKML <linux-kernel@...r.kernel.org>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Will Deacon <will.deacon@....com>,
	Prasad <prasad@...ux.vnet.ibm.com>,
	Paul Mundt <lethal@...ux-sh.org>,
	Jason Wessel <jason.wessel@...driver.com>,
	"H . Peter Anvin" <hpa@...or.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...e.hu>
Subject: [PATCH 0/6] hw_breakpoint: Let the user choose not to build it (and perf too)

Hi,

Until now, x86 and superh32 had to always build hw_breakpoint and perf.
And powerpc and arm were always building hw_breakpoints when perf
was enabled.

After this patchset, one can simply disable hw_breakpoints if he
selected CONFIG_EXPERT. Afterward the user is free to select perf
or not. Except on SH unfortunately because that would require a
bit of change in ptrace to support singlestep failures.

Frederic Weisbecker (6):
  hw_breakpoints: Split hardware breakpoints config
  hw_breakpoints: Migrate breakpoint conditional build under new config
  x86: Allow the user not to build hw_breakpoints
  hw_breakpoints: Breakpoints arch ability don't need perf events
  hw_breakpoints: Only force perf events if breakpoints are selected
  hw_breakpoints: Drop remaining misplaced dependency on perf

 arch/Kconfig                             |    1 -
 arch/arm/Kconfig                         |    2 +-
 arch/arm/include/asm/hw_breakpoint.h     |    4 +-
 arch/arm/include/asm/processor.h         |    2 +-
 arch/arm/kernel/Makefile                 |    2 +-
 arch/arm/kernel/entry-header.S           |    2 +-
 arch/arm/kernel/ptrace.c                 |    4 +-
 arch/powerpc/Kconfig                     |    2 +-
 arch/powerpc/include/asm/cputable.h      |    4 +-
 arch/powerpc/include/asm/hw_breakpoint.h |    6 ++--
 arch/powerpc/include/asm/processor.h     |    4 +-
 arch/powerpc/kernel/Makefile             |    2 +-
 arch/powerpc/kernel/process.c            |   18 ++++++++--------
 arch/powerpc/kernel/ptrace.c             |   12 +++++-----
 arch/powerpc/lib/Makefile                |    2 +-
 arch/sh/Kconfig                          |    2 +-
 arch/sh/kernel/Makefile                  |    2 +-
 arch/sh/kernel/cpu/sh4a/Makefile         |    2 +-
 arch/x86/Kconfig                         |    3 +-
 arch/x86/include/asm/debugreg.h          |   33 ++++++++++++++++++++++++++++-
 arch/x86/kernel/Makefile                 |    3 +-
 arch/x86/kernel/process.c                |    1 +
 arch/x86/kernel/ptrace.c                 |   17 +++++++++++++++
 include/linux/hw_breakpoint.h            |    6 ++--
 include/linux/perf_event.h               |    4 +-
 init/Kconfig                             |   11 ++++++++++
 kernel/Makefile                          |    2 +-
 kernel/perf_event.c                      |    4 +-
 samples/Kconfig                          |    2 +-
 29 files changed, 108 insertions(+), 51 deletions(-)

-- 
1.7.3.2

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