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    Subject[PATCH 5/6] syscalls: add define syscall prefix macro
    Add a new 'SYSCALL_PREFIX_DEFINE#()' style macro to include/linux/syscalls.h.
    This allows us to create syscalls via:

    SYSCALL_PREFIX_DEFINE1(32_, mmap, struct mmap_arg_struct __user *, arg);

    The standard 'SYSCALL_DEFINE#()' macro forces 'sys_blah', but for the 32 compat
    calls we want 'sys32_blah'.

    Signed-off-by: Jason Baron <jbaron@redhat.com>
    ---
    include/linux/syscalls.h | 8 ++++++++
    1 files changed, 8 insertions(+), 0 deletions(-)

    diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h
    index 36af9db..8ddd27e 100644
    --- a/include/linux/syscalls.h
    +++ b/include/linux/syscalls.h
    @@ -210,6 +210,7 @@ struct perf_event_attr;
    asmlinkage long sys_##sname(void)
    #else
    #define SYSCALL_DEFINE0(name) asmlinkage long sys_##name(void)
    +#define SYSCALL_PREFIX_DEFINE0(pre, name) asmlinkage long sys_##name(void)
    #endif

    #define SYSCALL_DEFINE1(name, ...) SYSCALL_DEFINEx(1, _##name, __VA_ARGS__)
    @@ -219,6 +220,13 @@ struct perf_event_attr;
    #define SYSCALL_DEFINE5(name, ...) SYSCALL_DEFINEx(5, _##name, __VA_ARGS__)
    #define SYSCALL_DEFINE6(name, ...) SYSCALL_DEFINEx(6, _##name, __VA_ARGS__)

    +#define SYSCALL_PREFIX_DEFINE1(pre, name, ...) SYSCALL_DEFINEx(1, pre##name, __VA_ARGS__)
    +#define SYSCALL_PREFIX_DEFINE2(pre, name, ...) SYSCALL_DEFINEx(2, pre##name, __VA_ARGS__)
    +#define SYSCALL_PREFIX_DEFINE3(pre, name, ...) SYSCALL_DEFINEx(3, pre##name, __VA_ARGS__)
    +#define SYSCALL_PREFIX_DEFINE4(pre, name, ...) SYSCALL_DEFINEx(4, pre##name, __VA_ARGS__)
    +#define SYSCALL_PREFIX_DEFINE5(pre, name, ...) SYSCALL_DEFINEx(5, pre##name, __VA_ARGS__)
    +#define SYSCALL_PREFIX_DEFINE6(pre, name, ...) SYSCALL_DEFINEx(6, pre##name, __VA_ARGS__)
    +
    #ifdef CONFIG_PPC64
    #define SYSCALL_ALIAS(alias, name) \
    asm ("\t.globl " #alias "\n\t.set " #alias ", " #name "\n" \
    --
    1.6.5.1


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