Re: [Qemu-devel] [PATCH v2 02/17] accel: Move accel code to accel.c

[Paolo Bonzini <pbonzini@redhat.com>]

Il 29/08/2014 22:31, Eduardo Habkost ha scritto:
> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
> ---
>  hw/core/Makefile.objs |   1 +
>  hw/core/accel.c       | 113 ++++++++++++++++++++++++++++++++++++++++++++++++++

This is not hw/core/, so please leave it in the root directory.

>  include/hw/accel.h    |  32 ++++++++++++++

... and please put this in include/sysemu/.

Apart from this,

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>

>  vl.c                  |  81 +-----------------------------------
>  4 files changed, 147 insertions(+), 80 deletions(-)
>  create mode 100644 hw/core/accel.c
>  create mode 100644 include/hw/accel.h
> 
> diff --git a/hw/core/Makefile.objs b/hw/core/Makefile.objs
> index 17845df..6e56e47 100644
> --- a/hw/core/Makefile.objs
> +++ b/hw/core/Makefile.objs
> @@ -14,3 +14,4 @@ common-obj-$(CONFIG_SOFTMMU) += machine.o
>  common-obj-$(CONFIG_SOFTMMU) += null-machine.o
>  common-obj-$(CONFIG_SOFTMMU) += loader.o
>  common-obj-$(CONFIG_SOFTMMU) += qdev-properties-system.o
> +common-obj-$(CONFIG_SOFTMMU) += accel.o
> diff --git a/hw/core/accel.c b/hw/core/accel.c
> new file mode 100644
> index 0000000..04da696
> --- /dev/null
> +++ b/hw/core/accel.c
> @@ -0,0 +1,113 @@
> +/*
> + * QEMU System Emulator, accelerator interfaces
> + *
> + * Copyright (c) 2003-2008 Fabrice Bellard
> + * Copyright (c) 2014 Red Hat Inc.
> + *
> + * Permission is hereby granted, free of charge, to any person obtaining a copy
> + * of this software and associated documentation files (the "Software"), to deal
> + * in the Software without restriction, including without limitation the rights
> + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
> + * copies of the Software, and to permit persons to whom the Software is
> + * furnished to do so, subject to the following conditions:
> + *
> + * The above copyright notice and this permission notice shall be included in
> + * all copies or substantial portions of the Software.
> + *
> + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
> + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
> + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
> + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
> + * THE SOFTWARE.
> + */
> +
> +#include "hw/accel.h"
> +#include "qemu-common.h"
> +#include "sysemu/arch_init.h"
> +#include "sysemu/sysemu.h"
> +#include "sysemu/kvm.h"
> +#include "sysemu/qtest.h"
> +#include "hw/xen/xen.h"
> +
> +int tcg_tb_size;
> +static bool tcg_allowed = true;
> +
> +static int tcg_init(MachineClass *mc)
> +{
> +    tcg_exec_init(tcg_tb_size * 1024 * 1024);
> +    return 0;
> +}
> +
> +static struct {
> +    const char *opt_name;
> +    const char *name;
> +    int (*available)(void);
> +    int (*init)(MachineClass *mc);
> +    bool *allowed;
> +} accel_list[] = {
> +    { "tcg", "tcg", tcg_available, tcg_init, &tcg_allowed },
> +    { "xen", "Xen", xen_available, xen_init, &xen_allowed },
> +    { "kvm", "KVM", kvm_available, kvm_init, &kvm_allowed },
> +    { "qtest", "QTest", qtest_available, qtest_init_accel, &qtest_allowed },
> +};
> +
> +int configure_accelerator(MachineClass *mc)
> +{
> +    const char *p;
> +    char buf[10];
> +    int i, ret;
> +    bool accel_initialised = false;
> +    bool init_failed = false;
> +
> +    p = qemu_opt_get(qemu_get_machine_opts(), "accel");
> +    if (p == NULL) {
> +        /* Use the default "accelerator", tcg */
> +        p = "tcg";
> +    }
> +
> +    while (!accel_initialised && *p != '\0') {
> +        if (*p == ':') {
> +            p++;
> +        }
> +        p = get_opt_name(buf, sizeof(buf), p, ':');
> +        for (i = 0; i < ARRAY_SIZE(accel_list); i++) {
> +            if (strcmp(accel_list[i].opt_name, buf) == 0) {
> +                if (!accel_list[i].available()) {
> +                    printf("%s not supported for this target\n",
> +                           accel_list[i].name);
> +                    break;
> +                }
> +                *(accel_list[i].allowed) = true;
> +                ret = accel_list[i].init(mc);
> +                if (ret < 0) {
> +                    init_failed = true;
> +                    fprintf(stderr, "failed to initialize %s: %s\n",
> +                            accel_list[i].name,
> +                            strerror(-ret));
> +                    *(accel_list[i].allowed) = false;
> +                } else {
> +                    accel_initialised = true;
> +                }
> +                break;
> +            }
> +        }
> +        if (i == ARRAY_SIZE(accel_list)) {
> +            fprintf(stderr, "\"%s\" accelerator does not exist.\n", buf);
> +        }
> +    }
> +
> +    if (!accel_initialised) {
> +        if (!init_failed) {
> +            fprintf(stderr, "No accelerator found!\n");
> +        }
> +        exit(1);
> +    }
> +
> +    if (init_failed) {
> +        fprintf(stderr, "Back to %s accelerator.\n", accel_list[i].name);
> +    }
> +
> +    return !accel_initialised;
> +}
> diff --git a/include/hw/accel.h b/include/hw/accel.h
> new file mode 100644
> index 0000000..5537d74
> --- /dev/null
> +++ b/include/hw/accel.h
> @@ -0,0 +1,32 @@
> +/* QEMU accelerator interfaces
> + *
> + * Copyright (c) 2014 Red Hat Inc
> + *
> + * Permission is hereby granted, free of charge, to any person obtaining a copy
> + * of this software and associated documentation files (the "Software"), to deal
> + * in the Software without restriction, including without limitation the rights
> + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
> + * copies of the Software, and to permit persons to whom the Software is
> + * furnished to do so, subject to the following conditions:
> + *
> + * The above copyright notice and this permission notice shall be included in
> + * all copies or substantial portions of the Software.
> + *
> + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
> + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
> + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
> + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
> + * THE SOFTWARE.
> + */
> +#ifndef HW_ACCEL_H
> +#define HW_ACCEL_H
> +
> +#include "qemu/typedefs.h"
> +
> +extern int tcg_tb_size;
> +
> +int configure_accelerator(MachineClass *mc);
> +
> +#endif
> diff --git a/vl.c b/vl.c
> index e49c115..911de91 100644
> --- a/vl.c
> +++ b/vl.c
> @@ -61,6 +61,7 @@ int main(int argc, char **argv)
>  #include "qemu/sockets.h"
>  #include "hw/hw.h"
>  #include "hw/boards.h"
> +#include "hw/accel.h"
>  #include "hw/usb.h"
>  #include "hw/pcmcia.h"
>  #include "hw/i386/pc.h"
> @@ -212,11 +213,9 @@ static NotifierList exit_notifiers =
>  static NotifierList machine_init_done_notifiers =
>      NOTIFIER_LIST_INITIALIZER(machine_init_done_notifiers);
>  
> -static bool tcg_allowed = true;
>  bool xen_allowed;
>  uint32_t xen_domid;
>  enum xen_mode xen_mode = XEN_EMULATE;
> -static int tcg_tb_size;
>  
>  static int has_defaults = 1;
>  static int default_serial = 1;
> @@ -2674,84 +2673,6 @@ static MachineClass *machine_parse(const char *name)
>      exit(!name || !is_help_option(name));
>  }
>  
> -static int tcg_init(MachineClass *mc)
> -{
> -    tcg_exec_init(tcg_tb_size * 1024 * 1024);
> -    return 0;
> -}
> -
> -static struct {
> -    const char *opt_name;
> -    const char *name;
> -    int (*available)(void);
> -    int (*init)(MachineClass *mc);
> -    bool *allowed;
> -} accel_list[] = {
> -    { "tcg", "tcg", tcg_available, tcg_init, &tcg_allowed },
> -    { "xen", "Xen", xen_available, xen_init, &xen_allowed },
> -    { "kvm", "KVM", kvm_available, kvm_init, &kvm_allowed },
> -    { "qtest", "QTest", qtest_available, qtest_init_accel, &qtest_allowed },
> -};
> -
> -static int configure_accelerator(MachineClass *mc)
> -{
> -    const char *p;
> -    char buf[10];
> -    int i, ret;
> -    bool accel_initialised = false;
> -    bool init_failed = false;
> -
> -    p = qemu_opt_get(qemu_get_machine_opts(), "accel");
> -    if (p == NULL) {
> -        /* Use the default "accelerator", tcg */
> -        p = "tcg";
> -    }
> -
> -    while (!accel_initialised && *p != '\0') {
> -        if (*p == ':') {
> -            p++;
> -        }
> -        p = get_opt_name(buf, sizeof(buf), p, ':');
> -        for (i = 0; i < ARRAY_SIZE(accel_list); i++) {
> -            if (strcmp(accel_list[i].opt_name, buf) == 0) {
> -                if (!accel_list[i].available()) {
> -                    printf("%s not supported for this target\n",
> -                           accel_list[i].name);
> -                    break;
> -                }
> -                *(accel_list[i].allowed) = true;
> -                ret = accel_list[i].init(mc);
> -                if (ret < 0) {
> -                    init_failed = true;
> -                    fprintf(stderr, "failed to initialize %s: %s\n",
> -                            accel_list[i].name,
> -                            strerror(-ret));
> -                    *(accel_list[i].allowed) = false;
> -                } else {
> -                    accel_initialised = true;
> -                }
> -                break;
> -            }
> -        }
> -        if (i == ARRAY_SIZE(accel_list)) {
> -            fprintf(stderr, "\"%s\" accelerator does not exist.\n", buf);
> -        }
> -    }
> -
> -    if (!accel_initialised) {
> -        if (!init_failed) {
> -            fprintf(stderr, "No accelerator found!\n");
> -        }
> -        exit(1);
> -    }
> -
> -    if (init_failed) {
> -        fprintf(stderr, "Back to %s accelerator.\n", accel_list[i].name);
> -    }
> -
> -    return !accel_initialised;
> -}
> -
>  void qemu_add_exit_notifier(Notifier *notify)
>  {
>      notifier_list_add(&exit_notifiers, notify);
>