• Paul Gortmaker's avatar
    arm: delete __cpuinit/__CPUINIT usage from all ARM users · 8bd26e3a
    Paul Gortmaker authored
    The __cpuinit type of throwaway sections might have made sense
    some time ago when RAM was more constrained, but now the savings
    do not offset the cost and complications.  For example, the fix in
    commit 5e427ec2 ("x86: Fix bit corruption at CPU resume time")
    is a good example of the nasty type of bugs that can be created
    with improper use of the various __init prefixes.
    
    After a discussion on LKML[1] it was decided that cpuinit should go
    the way of devinit and be phased out.  Once all the users are gone,
    we can then finally remove the macros themselves from linux/init.h.
    
    Note that some harmless section mismatch warnings may result, since
    notify_cpu_starting() and cpu_up() are arch independent (kernel/cpu.c)
    and are flagged as __cpuinit  -- so if we remove the __cpuinit from
    the arch specific callers, we will also get section mismatch warnings.
    As an intermediate step, we intend to turn the linux/init.h cpuinit
    related content into no-ops as early as possible, since that will get
    rid of these warnings.  In any case, they are temporary and harmless.
    
    This removes all the ARM uses of the __cpuinit macros from C code,
    and all __CPUINIT from assembly code.  It also had two ".previous"
    section statements that were paired off against __CPUINIT
    (aka .section ".cpuinit.text") that also get removed here.
    
    [1] https://lkml.org/lkml/2013/5/20/589
    
    Cc: Russell King <linux@arm.linux.org.uk>
    Cc: Will Deacon <will.deacon@arm.com>
    Cc: linux-arm-kernel@lists.infradead.org
    Signed-off-by: default avatarPaul Gortmaker <paul.gortmaker@windriver.com>
    8bd26e3a
proc-arm926.S 12.5 KB