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[0/2] hw, target: Prefer fast cpu_env() over slower CPU QOM cast macro

Message ID 20240125165648.49898-1-philmd@linaro.org
Headers show
Series hw, target: Prefer fast cpu_env() over slower CPU QOM cast macro | expand

Message

Philippe Mathieu-Daudé Jan. 25, 2024, 4:56 p.m. UTC
Use cpu_env() -- which is fast path -- when possible.
Bulk conversion using Coccinelle spatch (script included).

Philippe Mathieu-Daudé (2):
  scripts/coccinelle: Add cpu_env.cocci_template script
  bulk: Prefer fast cpu_env() over slower CPU QOM cast macro

 MAINTAINERS                               |  1 +
 target/i386/hvf/vmx.h                     |  9 ++--
 hw/i386/vmmouse.c                         |  6 +--
 hw/i386/xen/xen-hvm.c                     |  3 +-
 hw/intc/arm_gicv3_cpuif_common.c          |  3 +-
 hw/ppc/mpc8544_guts.c                     |  3 +-
 hw/ppc/pnv.c                              |  3 +-
 hw/ppc/pnv_xscom.c                        |  3 +-
 hw/ppc/ppce500_spin.c                     |  3 +-
 hw/ppc/spapr.c                            |  3 +-
 hw/ppc/spapr_caps.c                       |  6 +--
 target/alpha/cpu.c                        | 21 +++-----
 target/alpha/gdbstub.c                    |  6 +--
 target/alpha/helper.c                     | 12 ++---
 target/alpha/mem_helper.c                 |  9 ++--
 target/arm/cpu.c                          | 15 ++----
 target/arm/debug_helper.c                 |  6 +--
 target/arm/gdbstub.c                      |  6 +--
 target/arm/gdbstub64.c                    |  6 +--
 target/arm/helper.c                       |  9 ++--
 target/arm/hvf/hvf.c                      | 12 ++---
 target/arm/kvm.c                          |  3 +-
 target/arm/ptw.c                          |  3 +-
 target/arm/tcg/cpu32.c                    |  3 +-
 target/avr/cpu.c                          | 21 +++-----
 target/avr/gdbstub.c                      |  6 +--
 target/avr/helper.c                       |  9 ++--
 target/cris/cpu.c                         |  3 +-
 target/cris/gdbstub.c                     |  9 ++--
 target/cris/helper.c                      | 12 ++---
 target/cris/translate.c                   |  3 +-
 target/hppa/cpu.c                         |  6 +--
 target/hppa/int_helper.c                  |  6 +--
 target/hppa/mem_helper.c                  |  3 +-
 target/i386/arch_memory_mapping.c         |  3 +-
 target/i386/cpu-dump.c                    |  3 +-
 target/i386/cpu.c                         | 36 +++++---------
 target/i386/helper.c                      | 30 ++++--------
 target/i386/hvf/hvf.c                     |  6 +--
 target/i386/hvf/x86.c                     |  3 +-
 target/i386/hvf/x86_emu.c                 |  6 +--
 target/i386/hvf/x86_task.c                | 10 ++--
 target/i386/hvf/x86hvf.c                  |  6 +--
 target/i386/kvm/kvm.c                     |  6 +--
 target/i386/kvm/xen-emu.c                 | 30 ++++--------
 target/i386/tcg/sysemu/bpt_helper.c       |  3 +-
 target/i386/tcg/tcg-cpu.c                 | 12 ++---
 target/i386/tcg/user/excp_helper.c        |  3 +-
 target/i386/tcg/user/seg_helper.c         |  3 +-
 target/m68k/cpu.c                         | 30 ++++--------
 target/m68k/gdbstub.c                     |  6 +--
 target/m68k/helper.c                      |  3 +-
 target/m68k/m68k-semi.c                   |  6 +--
 target/m68k/op_helper.c                   |  9 ++--
 target/m68k/translate.c                   |  3 +-
 target/microblaze/helper.c                |  3 +-
 target/microblaze/translate.c             |  3 +-
 target/mips/cpu.c                         |  9 ++--
 target/mips/gdbstub.c                     |  6 +--
 target/mips/kvm.c                         | 27 ++++------
 target/mips/sysemu/physaddr.c             |  3 +-
 target/mips/tcg/exception.c               |  3 +-
 target/mips/tcg/op_helper.c               |  3 +-
 target/mips/tcg/sysemu/special_helper.c   |  3 +-
 target/mips/tcg/sysemu/tlb_helper.c       |  6 +--
 target/mips/tcg/translate.c               |  3 +-
 target/nios2/cpu.c                        |  9 ++--
 target/nios2/helper.c                     |  3 +-
 target/nios2/nios2-semi.c                 |  6 +--
 target/openrisc/gdbstub.c                 |  3 +-
 target/openrisc/interrupt.c               |  6 +--
 target/openrisc/translate.c               |  3 +-
 target/ppc/cpu_init.c                     |  9 ++--
 target/ppc/excp_helper.c                  |  3 +-
 target/ppc/gdbstub.c                      | 12 ++---
 target/ppc/kvm.c                          |  6 +--
 target/ppc/ppc-qmp-cmds.c                 |  3 +-
 target/ppc/user_only_helper.c             |  3 +-
 target/riscv/arch_dump.c                  |  6 +--
 target/riscv/cpu.c                        | 15 ++----
 target/riscv/cpu_helper.c                 | 13 ++---
 target/riscv/debug.c                      |  9 ++--
 target/riscv/gdbstub.c                    |  6 +--
 target/riscv/kvm/kvm-cpu.c                |  6 +--
 target/riscv/tcg/tcg-cpu.c                |  9 ++--
 target/riscv/translate.c                  |  3 +-
 target/rx/gdbstub.c                       |  6 +--
 target/rx/helper.c                        |  6 +--
 target/rx/translate.c                     |  3 +-
 target/s390x/cpu-dump.c                   |  3 +-
 target/s390x/gdbstub.c                    |  6 +--
 target/s390x/helper.c                     |  3 +-
 target/s390x/kvm/kvm.c                    |  6 +--
 target/s390x/tcg/excp_helper.c            |  9 ++--
 target/s390x/tcg/translate.c              |  3 +-
 target/sh4/cpu.c                          | 15 ++----
 target/sh4/gdbstub.c                      |  6 +--
 target/sh4/helper.c                       |  9 ++--
 target/sh4/translate.c                    |  3 +-
 target/sparc/cpu.c                        | 12 ++---
 target/sparc/gdbstub.c                    |  3 +-
 target/sparc/int32_helper.c               |  3 +-
 target/sparc/int64_helper.c               |  3 +-
 target/sparc/ldst_helper.c                |  6 +--
 target/sparc/mmu_helper.c                 | 15 ++----
 target/sparc/translate.c                  |  3 +-
 target/tricore/cpu.c                      | 12 ++---
 target/tricore/gdbstub.c                  |  6 +--
 target/tricore/helper.c                   |  3 +-
 target/tricore/translate.c                |  3 +-
 target/xtensa/dbg_helper.c                |  3 +-
 target/xtensa/exc_helper.c                |  3 +-
 target/xtensa/gdbstub.c                   |  6 +--
 target/xtensa/helper.c                    |  9 ++--
 target/xtensa/translate.c                 |  3 +-
 scripts/coccinelle/cpu_env.cocci_template | 60 +++++++++++++++++++++++
 116 files changed, 334 insertions(+), 548 deletions(-)
 create mode 100644 scripts/coccinelle/cpu_env.cocci_template

Comments

Thomas Huth Jan. 26, 2024, 5:09 p.m. UTC | #1
On 25/01/2024 17.56, Philippe Mathieu-Daudé wrote:
> Mechanical patch produced running the command documented
> in scripts/coccinelle/cpu_env.cocci_template header.
> 
> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
> ---
>   target/i386/hvf/vmx.h                   |  9 +++----
>   hw/i386/vmmouse.c                       |  6 ++---
>   hw/i386/xen/xen-hvm.c                   |  3 +--
>   hw/intc/arm_gicv3_cpuif_common.c        |  3 +--
>   hw/ppc/mpc8544_guts.c                   |  3 +--
>   hw/ppc/pnv.c                            |  3 +--
>   hw/ppc/pnv_xscom.c                      |  3 +--
>   hw/ppc/ppce500_spin.c                   |  3 +--
>   hw/ppc/spapr.c                          |  3 +--
>   hw/ppc/spapr_caps.c                     |  6 ++---
>   target/alpha/cpu.c                      | 21 +++++----------
>   target/alpha/gdbstub.c                  |  6 ++---
>   target/alpha/helper.c                   | 12 +++------
>   target/alpha/mem_helper.c               |  9 +++----
>   target/arm/cpu.c                        | 15 ++++-------
>   target/arm/debug_helper.c               |  6 ++---
>   target/arm/gdbstub.c                    |  6 ++---
>   target/arm/gdbstub64.c                  |  6 ++---
>   target/arm/helper.c                     |  9 +++----
>   target/arm/hvf/hvf.c                    | 12 +++------
>   target/arm/kvm.c                        |  3 +--
>   target/arm/ptw.c                        |  3 +--
>   target/arm/tcg/cpu32.c                  |  3 +--
>   target/avr/cpu.c                        | 21 +++++----------
>   target/avr/gdbstub.c                    |  6 ++---
>   target/avr/helper.c                     |  9 +++----
>   target/cris/cpu.c                       |  3 +--
>   target/cris/gdbstub.c                   |  9 +++----
>   target/cris/helper.c                    | 12 +++------
>   target/cris/translate.c                 |  3 +--
>   target/hppa/cpu.c                       |  6 ++---
>   target/hppa/int_helper.c                |  6 ++---
>   target/hppa/mem_helper.c                |  3 +--
>   target/i386/arch_memory_mapping.c       |  3 +--
>   target/i386/cpu-dump.c                  |  3 +--
>   target/i386/cpu.c                       | 36 +++++++++----------------
>   target/i386/helper.c                    | 30 +++++++--------------
>   target/i386/hvf/hvf.c                   |  6 ++---
>   target/i386/hvf/x86.c                   |  3 +--
>   target/i386/hvf/x86_emu.c               |  6 ++---
>   target/i386/hvf/x86_task.c              | 10 +++----
>   target/i386/hvf/x86hvf.c                |  6 ++---
>   target/i386/kvm/kvm.c                   |  6 ++---
>   target/i386/kvm/xen-emu.c               | 30 +++++++--------------
>   target/i386/tcg/sysemu/bpt_helper.c     |  3 +--
>   target/i386/tcg/tcg-cpu.c               | 12 +++------
>   target/i386/tcg/user/excp_helper.c      |  3 +--
>   target/i386/tcg/user/seg_helper.c       |  3 +--
>   target/m68k/cpu.c                       | 30 +++++++--------------
>   target/m68k/gdbstub.c                   |  6 ++---
>   target/m68k/helper.c                    |  3 +--
>   target/m68k/m68k-semi.c                 |  6 ++---
>   target/m68k/op_helper.c                 |  9 +++----
>   target/m68k/translate.c                 |  3 +--
>   target/microblaze/helper.c              |  3 +--
>   target/microblaze/translate.c           |  3 +--
>   target/mips/cpu.c                       |  9 +++----
>   target/mips/gdbstub.c                   |  6 ++---
>   target/mips/kvm.c                       | 27 +++++++------------
>   target/mips/sysemu/physaddr.c           |  3 +--
>   target/mips/tcg/exception.c             |  3 +--
>   target/mips/tcg/op_helper.c             |  3 +--
>   target/mips/tcg/sysemu/special_helper.c |  3 +--
>   target/mips/tcg/sysemu/tlb_helper.c     |  6 ++---
>   target/mips/tcg/translate.c             |  3 +--
>   target/nios2/cpu.c                      |  9 +++----
>   target/nios2/helper.c                   |  3 +--
>   target/nios2/nios2-semi.c               |  6 ++---
>   target/openrisc/gdbstub.c               |  3 +--
>   target/openrisc/interrupt.c             |  6 ++---
>   target/openrisc/translate.c             |  3 +--
>   target/ppc/cpu_init.c                   |  9 +++----
>   target/ppc/excp_helper.c                |  3 +--
>   target/ppc/gdbstub.c                    | 12 +++------
>   target/ppc/kvm.c                        |  6 ++---
>   target/ppc/ppc-qmp-cmds.c               |  3 +--
>   target/ppc/user_only_helper.c           |  3 +--
>   target/riscv/arch_dump.c                |  6 ++---
>   target/riscv/cpu.c                      | 15 ++++-------
>   target/riscv/cpu_helper.c               | 13 +++------
>   target/riscv/debug.c                    |  9 +++----
>   target/riscv/gdbstub.c                  |  6 ++---
>   target/riscv/kvm/kvm-cpu.c              |  6 ++---
>   target/riscv/tcg/tcg-cpu.c              |  9 +++----
>   target/riscv/translate.c                |  3 +--
>   target/rx/gdbstub.c                     |  6 ++---
>   target/rx/helper.c                      |  6 ++---
>   target/rx/translate.c                   |  3 +--
>   target/s390x/cpu-dump.c                 |  3 +--
>   target/s390x/gdbstub.c                  |  6 ++---
>   target/s390x/helper.c                   |  3 +--
>   target/s390x/kvm/kvm.c                  |  6 ++---
>   target/s390x/tcg/excp_helper.c          |  9 +++----
>   target/s390x/tcg/translate.c            |  3 +--
>   target/sh4/cpu.c                        | 15 ++++-------
>   target/sh4/gdbstub.c                    |  6 ++---
>   target/sh4/helper.c                     |  9 +++----
>   target/sh4/translate.c                  |  3 +--
>   target/sparc/cpu.c                      | 12 +++------
>   target/sparc/gdbstub.c                  |  3 +--
>   target/sparc/int32_helper.c             |  3 +--
>   target/sparc/int64_helper.c             |  3 +--
>   target/sparc/ldst_helper.c              |  6 ++---
>   target/sparc/mmu_helper.c               | 15 ++++-------
>   target/sparc/translate.c                |  3 +--
>   target/tricore/cpu.c                    | 12 +++------
>   target/tricore/gdbstub.c                |  6 ++---
>   target/tricore/helper.c                 |  3 +--
>   target/tricore/translate.c              |  3 +--
>   target/xtensa/dbg_helper.c              |  3 +--
>   target/xtensa/exc_helper.c              |  3 +--
>   target/xtensa/gdbstub.c                 |  6 ++---
>   target/xtensa/helper.c                  |  9 +++----
>   target/xtensa/translate.c               |  3 +--
>   114 files changed, 273 insertions(+), 548 deletions(-)

A huge patch ... I wonder whether it would make sense to split it up by 
target architecture to ease the review?

...
> diff --git a/hw/i386/vmmouse.c b/hw/i386/vmmouse.c
> index a8d014d09a..eb0613bfbe 100644
> --- a/hw/i386/vmmouse.c
> +++ b/hw/i386/vmmouse.c
> @@ -74,8 +74,7 @@ struct VMMouseState {
>   
>   static void vmmouse_get_data(uint32_t *data)
>   {
> -    X86CPU *cpu = X86_CPU(current_cpu);
> -    CPUX86State *env = &cpu->env;
> +    CPUX86State *env = cpu_env(CPU(current_cpu));

No need for the CPU() cast here, current_cpu is already
of type "CPUState *".

>   
>       data[0] = env->regs[R_EAX]; data[1] = env->regs[R_EBX];
>       data[2] = env->regs[R_ECX]; data[3] = env->regs[R_EDX];
> @@ -84,8 +83,7 @@ static void vmmouse_get_data(uint32_t *data)
>   
>   static void vmmouse_set_data(const uint32_t *data)
>   {
> -    X86CPU *cpu = X86_CPU(current_cpu);
> -    CPUX86State *env = &cpu->env;
> +    CPUX86State *env = cpu_env(CPU(current_cpu));

dito.

>       env->regs[R_EAX] = data[0]; env->regs[R_EBX] = data[1];
>       env->regs[R_ECX] = data[2]; env->regs[R_EDX] = data[3];
> diff --git a/hw/i386/xen/xen-hvm.c b/hw/i386/xen/xen-hvm.c
> index f42621e674..3d3ae49be5 100644
> --- a/hw/i386/xen/xen-hvm.c
> +++ b/hw/i386/xen/xen-hvm.c
> @@ -487,8 +487,7 @@ static void regs_to_cpu(vmware_regs_t *vmport_regs, ioreq_t *req)
>   
>   static void regs_from_cpu(vmware_regs_t *vmport_regs)
>   {
> -    X86CPU *cpu = X86_CPU(current_cpu);
> -    CPUX86State *env = &cpu->env;
> +    CPUX86State *env = cpu_env(CPU(current_cpu));

dito.

>       vmport_regs->ebx = env->regs[R_EBX];
>       vmport_regs->ecx = env->regs[R_ECX];
...
> diff --git a/hw/ppc/mpc8544_guts.c b/hw/ppc/mpc8544_guts.c
> index a26e83d048..3c6a852ad4 100644
> --- a/hw/ppc/mpc8544_guts.c
> +++ b/hw/ppc/mpc8544_guts.c
> @@ -71,8 +71,7 @@ static uint64_t mpc8544_guts_read(void *opaque, hwaddr addr,
>                                     unsigned size)
>   {
>       uint32_t value = 0;
> -    PowerPCCPU *cpu = POWERPC_CPU(current_cpu);
> -    CPUPPCState *env = &cpu->env;
> +    CPUPPCState *env = cpu_env(CPU(current_cpu));

dito ...

I'll stop here, please respin with the cpu_env(CPU(current_cpu)) fixed to
cpu_env(current_cpu), and please split the patch by target CPU types.

  Thanks,
   Thomas