lkml.org 
[lkml]   [2007]   [Nov]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    Date
    From
    Subject[patch 1/2] Kprobes: Indicate kretprobe support in arch/<arch>/Kconfig
    From: Ananth N Mavinakayanahalli <ananth@in.ibm.com>

    This patch adds CONFIG_ARCH_SUPPORTS_KRETPROBES to the
    arch/<arch>/Kconfig file for relevant architectures with kprobes
    support. This facilitates easy handling of in-kernel modules (like
    samples/kprobes/kretprobe_example.c) that depend on kretprobes being
    present in the kernel.

    This patch depends on Mathieu Desnoyers' "Instrumentation menu removal"
    patchset (http://marc.info/?l=linux-kernel&m=119496432229633&w=2)


    Signed-off-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
    ---
    arch/avr32/Kconfig | 5 +++++
    arch/ia64/Kconfig | 5 +++++
    arch/powerpc/Kconfig | 5 +++++
    arch/s390/Kconfig | 5 +++++
    arch/sparc64/Kconfig | 5 +++++
    arch/x86/Kconfig.i386 | 5 +++++
    arch/x86/Kconfig.x86_64 | 5 +++++
    include/asm-ia64/kprobes.h | 1 -
    include/asm-powerpc/kprobes.h | 1 -
    include/asm-s390/kprobes.h | 1 -
    include/asm-x86/kprobes_32.h | 1 -
    include/asm-x86/kprobes_64.h | 1 -
    include/linux/kprobes.h | 6 +++---
    kernel/kprobes.c | 6 +++---
    14 files changed, 41 insertions(+), 11 deletions(-)

    Index: kernel-13nov/arch/avr32/Kconfig
    ===================================================================
    --- kernel-13nov.orig/arch/avr32/Kconfig
    +++ kernel-13nov/arch/avr32/Kconfig
    @@ -73,6 +73,11 @@ config GENERIC_BUG
    config ARCH_SUPPORTS_KPROBES
    def_bool y

    +config ARCH_SUPPORTS_KRETPROBES
    + bool
    + depends on ARCH_SUPPORTS_KPROBES
    + default n
    +
    source "init/Kconfig"

    menu "System Type and features"
    Index: kernel-13nov/arch/ia64/Kconfig
    ===================================================================
    --- kernel-13nov.orig/arch/ia64/Kconfig
    +++ kernel-13nov/arch/ia64/Kconfig
    @@ -105,6 +105,11 @@ config ARCH_SUPPORTS_OPROFILE
    config ARCH_SUPPORTS_KPROBES
    def_bool y

    +config ARCH_SUPPORTS_KRETPROBES
    + bool
    + depends on ARCH_SUPPORTS_KPROBES
    + default y
    +
    choice
    prompt "System type"
    default IA64_GENERIC
    Index: kernel-13nov/arch/powerpc/Kconfig
    ===================================================================
    --- kernel-13nov.orig/arch/powerpc/Kconfig
    +++ kernel-13nov/arch/powerpc/Kconfig
    @@ -169,6 +169,11 @@ config ARCH_SUPPORTS_OPROFILE
    config ARCH_SUPPORTS_KPROBES
    def_bool y

    +config ARCH_SUPPORTS_KRETPROBES
    + bool
    + depends on ARCH_SUPPORTS_KPROBES
    + default y
    +
    source "init/Kconfig"

    source "arch/powerpc/platforms/Kconfig"
    Index: kernel-13nov/arch/s390/Kconfig
    ===================================================================
    --- kernel-13nov.orig/arch/s390/Kconfig
    +++ kernel-13nov/arch/s390/Kconfig
    @@ -58,6 +58,11 @@ config ARCH_SUPPORTS_OPROFILE
    config ARCH_SUPPORTS_KPROBES
    def_bool y

    +config ARCH_SUPPORTS_KRETPROBES
    + bool
    + depends on ARCH_SUPPORTS_KPROBES
    + default y
    +
    source "init/Kconfig"

    menu "Base setup"
    Index: kernel-13nov/arch/sparc64/Kconfig
    ===================================================================
    --- kernel-13nov.orig/arch/sparc64/Kconfig
    +++ kernel-13nov/arch/sparc64/Kconfig
    @@ -82,6 +82,11 @@ config ARCH_SUPPORTS_OPROFILE
    config ARCH_SUPPORTS_KPROBES
    def_bool y

    +config ARCH_SUPPORTS_KRETPROBES
    + bool
    + depends on ARCH_SUPPORTS_KPROBES
    + default n
    +
    choice
    prompt "Kernel page size"
    default SPARC64_PAGE_SIZE_8KB
    Index: kernel-13nov/arch/x86/Kconfig.i386
    ===================================================================
    --- kernel-13nov.orig/arch/x86/Kconfig.i386
    +++ kernel-13nov/arch/x86/Kconfig.i386
    @@ -97,6 +97,11 @@ config ARCH_SUPPORTS_OPROFILE
    config ARCH_SUPPORTS_KPROBES
    def_bool y

    +config ARCH_SUPPORTS_KRETPROBES
    + bool
    + depends on ARCH_SUPPORTS_KPROBES
    + default y
    +
    source "init/Kconfig"

    menu "Processor type and features"
    Index: kernel-13nov/arch/x86/Kconfig.x86_64
    ===================================================================
    --- kernel-13nov.orig/arch/x86/Kconfig.x86_64
    +++ kernel-13nov/arch/x86/Kconfig.x86_64
    @@ -139,6 +139,11 @@ config ARCH_SUPPORTS_OPROFILE
    config ARCH_SUPPORTS_KPROBES
    def_bool y

    +config ARCH_SUPPORTS_KRETPROBES
    + bool
    + depends on ARCH_SUPPORTS_KPROBES
    + default y
    +
    source "init/Kconfig"


    Index: kernel-13nov/include/asm-ia64/kprobes.h
    ===================================================================
    --- kernel-13nov.orig/include/asm-ia64/kprobes.h
    +++ kernel-13nov/include/asm-ia64/kprobes.h
    @@ -82,7 +82,6 @@ struct kprobe_ctlblk {
    struct prev_kprobe prev_kprobe[ARCH_PREV_KPROBE_SZ];
    };

    -#define ARCH_SUPPORTS_KRETPROBES
    #define kretprobe_blacklist_size 0

    #define SLOT0_OPCODE_SHIFT (37)
    Index: kernel-13nov/include/asm-powerpc/kprobes.h
    ===================================================================
    --- kernel-13nov.orig/include/asm-powerpc/kprobes.h
    +++ kernel-13nov/include/asm-powerpc/kprobes.h
    @@ -80,7 +80,6 @@ typedef unsigned int kprobe_opcode_t;
    #define is_trap(instr) (IS_TW(instr) || IS_TWI(instr))
    #endif

    -#define ARCH_SUPPORTS_KRETPROBES
    #define flush_insn_slot(p) do { } while (0)
    #define kretprobe_blacklist_size 0

    Index: kernel-13nov/include/asm-s390/kprobes.h
    ===================================================================
    --- kernel-13nov.orig/include/asm-s390/kprobes.h
    +++ kernel-13nov/include/asm-s390/kprobes.h
    @@ -46,7 +46,6 @@ typedef u16 kprobe_opcode_t;
    ? (MAX_STACK_SIZE) \
    : (((unsigned long)current_thread_info()) + THREAD_SIZE - (ADDR)))

    -#define ARCH_SUPPORTS_KRETPROBES
    #define kretprobe_blacklist_size 0

    #define KPROBE_SWAP_INST 0x10
    Index: kernel-13nov/include/asm-x86/kprobes_32.h
    ===================================================================
    --- kernel-13nov.orig/include/asm-x86/kprobes_32.h
    +++ kernel-13nov/include/asm-x86/kprobes_32.h
    @@ -42,7 +42,6 @@ typedef u8 kprobe_opcode_t;
    ? (MAX_STACK_SIZE) \
    : (((unsigned long)current_thread_info()) + THREAD_SIZE - (ADDR)))

    -#define ARCH_SUPPORTS_KRETPROBES
    #define flush_insn_slot(p) do { } while (0)

    extern const int kretprobe_blacklist_size;
    Index: kernel-13nov/include/asm-x86/kprobes_64.h
    ===================================================================
    --- kernel-13nov.orig/include/asm-x86/kprobes_64.h
    +++ kernel-13nov/include/asm-x86/kprobes_64.h
    @@ -41,7 +41,6 @@ typedef u8 kprobe_opcode_t;
    ? (MAX_STACK_SIZE) \
    : (((unsigned long)current_thread_info()) + THREAD_SIZE - (ADDR)))

    -#define ARCH_SUPPORTS_KRETPROBES
    extern const int kretprobe_blacklist_size;

    void kretprobe_trampoline(void);
    Index: kernel-13nov/include/linux/kprobes.h
    ===================================================================
    --- kernel-13nov.orig/include/linux/kprobes.h
    +++ kernel-13nov/include/linux/kprobes.h
    @@ -125,11 +125,11 @@ struct jprobe {
    DECLARE_PER_CPU(struct kprobe *, current_kprobe);
    DECLARE_PER_CPU(struct kprobe_ctlblk, kprobe_ctlblk);

    -#ifdef ARCH_SUPPORTS_KRETPROBES
    +#ifdef CONFIG_ARCH_SUPPORTS_KRETPROBES
    extern void arch_prepare_kretprobe(struct kretprobe_instance *ri,
    struct pt_regs *regs);
    extern int arch_trampoline_kprobe(struct kprobe *p);
    -#else /* ARCH_SUPPORTS_KRETPROBES */
    +#else /* CONFIG_ARCH_SUPPORTS_KRETPROBES */
    static inline void arch_prepare_kretprobe(struct kretprobe *rp,
    struct pt_regs *regs)
    {
    @@ -138,7 +138,7 @@ static inline int arch_trampoline_kprobe
    {
    return 0;
    }
    -#endif /* ARCH_SUPPORTS_KRETPROBES */
    +#endif /* CONFIG_ARCH_SUPPORTS_KRETPROBES */
    /*
    * Function-return probe -
    * Note:
    Index: kernel-13nov/kernel/kprobes.c
    ===================================================================
    --- kernel-13nov.orig/kernel/kprobes.c
    +++ kernel-13nov/kernel/kprobes.c
    @@ -678,7 +678,7 @@ void __kprobes unregister_jprobe(struct
    unregister_kprobe(&jp->kp);
    }

    -#ifdef ARCH_SUPPORTS_KRETPROBES
    +#ifdef CONFIG_ARCH_SUPPORTS_KRETPROBES

    /*
    * This kprobe pre_handler is registered with every kretprobe. When probe
    @@ -762,7 +762,7 @@ int __kprobes register_kretprobe(struct
    return ret;
    }

    -#else /* ARCH_SUPPORTS_KRETPROBES */
    +#else /* CONFIG_ARCH_SUPPORTS_KRETPROBES */

    int __kprobes register_kretprobe(struct kretprobe *rp)
    {
    @@ -775,7 +775,7 @@ static int __kprobes pre_handler_kretpro
    return 0;
    }

    -#endif /* ARCH_SUPPORTS_KRETPROBES */
    +#endif /* CONFIG_ARCH_SUPPORTS_KRETPROBES */

    void __kprobes unregister_kretprobe(struct kretprobe *rp)
    {
    -
    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/
    \
     
     \ /
      Last update: 2007-11-13 16:49    [W:0.053 / U:29.872 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site