Hi.
Lots of powerpc files include <asm/asm-prototypes.h>,
and powerpc is the only architecture that does this.
<asm/asm-prototypes.h> exists to support modversion for asm.
So, it is supposed to be parsed by genksysms, not to be
included from other files. Right?
$ git grep asm/asm-prototypes.h
arch/arm64/include/asm/asm-prototypes.h: * ... kbuild will
automatically pick these up from <asm/asm-prototypes.h> and
arch/powerpc/kernel/early_32.c:#include <asm/asm-prototypes.h>
arch/powerpc/kernel/irq.c:#include <asm/asm-prototypes.h>
arch/powerpc/kernel/machine_kexec_64.c:#include <asm/asm-prototypes.h>
arch/powerpc/kernel/process.c:#include <asm/asm-prototypes.h>
arch/powerpc/kernel/prom_init.c:#include <asm/asm-prototypes.h>
arch/powerpc/kernel/ptrace.c:#include <asm/asm-prototypes.h>
arch/powerpc/kernel/security.c:#include <asm/asm-prototypes.h>
arch/powerpc/kernel/setup_32.c:#include <asm/asm-prototypes.h>
arch/powerpc/kernel/signal_32.c:#include <asm/asm-prototypes.h>
arch/powerpc/kernel/signal_64.c:#include <asm/asm-prototypes.h>
arch/powerpc/kernel/smp.c:#include <asm/asm-prototypes.h>
arch/powerpc/kernel/syscalls.c:#include <asm/asm-prototypes.h>
arch/powerpc/kernel/tau_6xx.c:#include <asm/asm-prototypes.h>
arch/powerpc/kernel/time.c:#include <asm/asm-prototypes.h>
arch/powerpc/kernel/trace/ftrace.c:#include <asm/asm-prototypes.h>
arch/powerpc/kernel/traps.c:#include <asm/asm-prototypes.h>
arch/powerpc/kvm/book3s_emulate.c:#include <asm/asm-prototypes.h>
arch/powerpc/kvm/book3s_hv.c:#include <asm/asm-prototypes.h>
arch/powerpc/kvm/book3s_hv_builtin.c:#include <asm/asm-prototypes.h>
arch/powerpc/kvm/book3s_hv_rm_xive.c:#include <asm/asm-prototypes.h>
arch/powerpc/kvm/book3s_pr.c:#include <asm/asm-prototypes.h>
arch/powerpc/lib/vmx-helper.c:#include <asm/asm-prototypes.h>
arch/powerpc/mm/book3s64/hash_utils.c:#include <asm/asm-prototypes.h>
arch/powerpc/mm/book3s64/slb.c:#include <asm/asm-prototypes.h>
arch/powerpc/platforms/powernv/idle.c:#include <asm/asm-prototypes.h>
arch/powerpc/platforms/powernv/opal-call.c:#include <asm/asm-prototypes.h>
arch/powerpc/platforms/powernv/opal-tracepoints.c:#include
<asm/asm-prototypes.h>
arch/powerpc/platforms/pseries/lpar.c:#include <asm/asm-prototypes.h>
scripts/Makefile.build:# .S file exports must have their C prototypes
defined in asm/asm-prototypes.h
scripts/Makefile.build: echo "\#include <asm/asm-prototypes.h>" ;
\
scripts/Makefile.build:ASM_PROTOTYPES := $(wildcard
$(srctree)/arch/$(SRCARCH)/include/asm/asm-prototypes.h)
--
Best Regards
Masahiro Yamada
Masahiro Yamada <[email protected]> writes:
> Hi.
>
> Lots of powerpc files include <asm/asm-prototypes.h>,
> and powerpc is the only architecture that does this.
>
> <asm/asm-prototypes.h> exists to support modversion for asm.
> So, it is supposed to be parsed by genksysms, not to be
> included from other files. Right?
It exists to support sparse, squashing a bunch of sparse warnings.
From the commit where I introduced it:
commit 42f5b4cacd783faf05e3ff8bf85e8be31f3dfa9d
Author: Daniel Axtens <[email protected]>
Date: Wed May 18 11:16:50 2016 +1000
powerpc: Introduce asm-prototypes.h
Sparse picked up a number of functions that are implemented in C and
then only referred to in asm code.
This introduces asm-prototypes.h, which provides a place for
prototypes of these functions.
This silences some sparse warnings.
Signed-off-by: Daniel Axtens <[email protected]>
[mpe: Add include guards, clean up copyright & GPL text]
Signed-off-by: Michael Ellerman <[email protected]>
Regards,
Daniel
>
>
> $ git grep asm/asm-prototypes.h
> arch/arm64/include/asm/asm-prototypes.h: * ... kbuild will
> automatically pick these up from <asm/asm-prototypes.h> and
> arch/powerpc/kernel/early_32.c:#include <asm/asm-prototypes.h>
> arch/powerpc/kernel/irq.c:#include <asm/asm-prototypes.h>
> arch/powerpc/kernel/machine_kexec_64.c:#include <asm/asm-prototypes.h>
> arch/powerpc/kernel/process.c:#include <asm/asm-prototypes.h>
> arch/powerpc/kernel/prom_init.c:#include <asm/asm-prototypes.h>
> arch/powerpc/kernel/ptrace.c:#include <asm/asm-prototypes.h>
> arch/powerpc/kernel/security.c:#include <asm/asm-prototypes.h>
> arch/powerpc/kernel/setup_32.c:#include <asm/asm-prototypes.h>
> arch/powerpc/kernel/signal_32.c:#include <asm/asm-prototypes.h>
> arch/powerpc/kernel/signal_64.c:#include <asm/asm-prototypes.h>
> arch/powerpc/kernel/smp.c:#include <asm/asm-prototypes.h>
> arch/powerpc/kernel/syscalls.c:#include <asm/asm-prototypes.h>
> arch/powerpc/kernel/tau_6xx.c:#include <asm/asm-prototypes.h>
> arch/powerpc/kernel/time.c:#include <asm/asm-prototypes.h>
> arch/powerpc/kernel/trace/ftrace.c:#include <asm/asm-prototypes.h>
> arch/powerpc/kernel/traps.c:#include <asm/asm-prototypes.h>
> arch/powerpc/kvm/book3s_emulate.c:#include <asm/asm-prototypes.h>
> arch/powerpc/kvm/book3s_hv.c:#include <asm/asm-prototypes.h>
> arch/powerpc/kvm/book3s_hv_builtin.c:#include <asm/asm-prototypes.h>
> arch/powerpc/kvm/book3s_hv_rm_xive.c:#include <asm/asm-prototypes.h>
> arch/powerpc/kvm/book3s_pr.c:#include <asm/asm-prototypes.h>
> arch/powerpc/lib/vmx-helper.c:#include <asm/asm-prototypes.h>
> arch/powerpc/mm/book3s64/hash_utils.c:#include <asm/asm-prototypes.h>
> arch/powerpc/mm/book3s64/slb.c:#include <asm/asm-prototypes.h>
> arch/powerpc/platforms/powernv/idle.c:#include <asm/asm-prototypes.h>
> arch/powerpc/platforms/powernv/opal-call.c:#include <asm/asm-prototypes.h>
> arch/powerpc/platforms/powernv/opal-tracepoints.c:#include
> <asm/asm-prototypes.h>
> arch/powerpc/platforms/pseries/lpar.c:#include <asm/asm-prototypes.h>
> scripts/Makefile.build:# .S file exports must have their C prototypes
> defined in asm/asm-prototypes.h
> scripts/Makefile.build: echo "\#include <asm/asm-prototypes.h>" ;
> \
> scripts/Makefile.build:ASM_PROTOTYPES := $(wildcard
> $(srctree)/arch/$(SRCARCH)/include/asm/asm-prototypes.h)
>
>
>
> --
> Best Regards
> Masahiro Yamada