Xen project Mailing List

[PATCH v8 3/5] xen: change <asm/bug.h> to <xen/bug.h>

The idea of the patch is to change all <asm/bug.h> to <xen/bug.h> and keep Xen compilable with adding only minimal amount of changes: 1. It was added "#include <xen/types.h>" to ARM's "<asm/bug.h>" as it uses uint_{16,32}t in 'struct bug_frame'. 2. It was added '#define BUG_FRAME_STRUCT' which means that ARM hasn't been switched to generic implementation yet. 3. It was added '#define BUG_FRAME_STRUCT' which means that x86 hasn't been switched to generic implementation yet. 4. BUGFRAME_* and _start_bug_frame[], _stop_bug_frame_*[] were removed for ARM & x86 to deal with compilation errors such as: redundant redeclaration of ... 5. Remove BUG_DISP_WIDTH, BUG_LINE_LO_WIDTH, BUG_LINE_HI_WIDTH from x86's <asm.bug.h> to not to produce #undef for them and #define again with the same values as in <xen/bug.h>. These #undef and #define will be anyway removed in the patch [2] 6. Remove <asm/bug.h> from <x86/acpi/cpufreq/cpufreq.c> and <drivers/cpufreq/cpufreq.c> as nothing from <xen/bug.h> are used in <*/cpufreq.c> In the following two patches x86 and ARM archictectures will be switched fully: [1] xen/arm: switch ARM to use generic implementation of bug.h [2] xen/x86: switch x86 to use generic implemetation of bug.h Signed-off-by: Oleksii Kurochko <oleksii.kurochko@xxxxxxxxx> Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx> --- Changes in V8: * remove <asm/bug.h> from <x86/acpi/cpufreq/cpufreq.c> and <drivers/cpufreq/cpufreq.c> as nothing from <xen/bug.h> are used in <*/cpufreq.c> * update the commit message --- Changes in V7: * Remove #undef {BUG_DISP_WIDTH, BUG_LINE_LO_WIDTH, BUG_LINE_HI_WIDTH} from ARM and x86: * for ARM was created separate patch where the defines are removed as unused. * for x86, the defines were removed now not to produce #undef of them to remove them again in the following-up patch * Update commit message * Add Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx> --- Changes in V6: - change the inclusion order of <xen/bug.h>. - add #undef of BUG_DISP_WIDTH, BUG_LINE_LO_WIDTH for ARM & x86 as they were introduced unconditionally in <xen/bug.h>. - update the commit message --- Changes in V5: - Nothing changed --- Changes in V4: - defines BUG_DISP_WIDTH, BUG_LINE_LO_WIDTH, BUG_LINE_HI_WIDTH were moved into "ifndef BUG_FRAME_STRUCT" in <xen/bug.h> as they are specific for 'struct bug_frame' and so should co-exist together. So the defines were back to <asm/bug.h> until BUG_FRAME_STRUCT will be defined in <asm/bug.h>. - Update the comment message. --- Changes in V3: * Update patch 2 not to break compilation: move some parts from patches 3 and 4 to patch 2: * move some generic parts from <asm/bug.h> to <xen/bug.h> * add define BUG_FRAME_STRUCT in ARM's <asm/bug.h> --- Changes in V2: * Put [PATCH v1 4/4] xen: change <asm/bug.h> to <xen/bug.h> as second patch, update the patch to change all <asm/bug.h> to <xen/bug.h> among the whole project to not break build. * Update the commit message. --- xen/arch/arm/include/asm/bug.h | 17 ++++------------- xen/arch/arm/include/asm/div64.h | 2 +- xen/arch/arm/vgic/vgic-v2.c | 2 +- xen/arch/arm/vgic/vgic.c | 2 +- xen/arch/x86/acpi/cpufreq/cpufreq.c | 1 - xen/arch/x86/include/asm/asm_defns.h | 2 +- xen/arch/x86/include/asm/bug.h | 19 ++----------------- xen/drivers/cpufreq/cpufreq.c | 1 - xen/include/xen/lib.h | 2 +- 9 files changed, 11 insertions(+), 37 deletions(-) diff --git a/xen/arch/arm/include/asm/bug.h b/xen/arch/arm/include/asm/bug.h index d6c98505bf..cacaf014ab 100644 --- a/xen/arch/arm/include/asm/bug.h +++ b/xen/arch/arm/include/asm/bug.h @@ -1,6 +1,8 @@ #ifndef __ARM_BUG_H__ #define __ARM_BUG_H__ +#include <xen/types.h> + #if defined(CONFIG_ARM_32) # include <asm/arm32/bug.h> #elif defined(CONFIG_ARM_64) @@ -9,6 +11,8 @@ # error "unknown ARM variant" #endif +#define BUG_FRAME_STRUCT + struct bug_frame { signed int loc_disp; /* Relative address to the bug address */ signed int file_disp; /* Relative address to the filename */ @@ -22,13 +26,6 @@ struct bug_frame { #define bug_line(b) ((b)->line) #define bug_msg(b) ((const char *)(b) + (b)->msg_disp) -#define BUGFRAME_run_fn 0 -#define BUGFRAME_warn 1 -#define BUGFRAME_bug 2 -#define BUGFRAME_assert 3 - -#define BUGFRAME_NR 4 - /* Many versions of GCC doesn't support the asm %c parameter which would * be preferable to this unpleasantness. We use mergeable string * sections to avoid multiple copies of the string appearing in the @@ -85,12 +82,6 @@ struct bug_frame { unreachable(); \ } while (0) -extern const struct bug_frame __start_bug_frames[], - __stop_bug_frames_0[], - __stop_bug_frames_1[], - __stop_bug_frames_2[], - __stop_bug_frames_3[]; - #endif /* __ARM_BUG_H__ */ /* * Local variables: diff --git a/xen/arch/arm/include/asm/div64.h b/xen/arch/arm/include/asm/div64.h index 1cd58bc51a..fc667a80f9 100644 --- a/xen/arch/arm/include/asm/div64.h +++ b/xen/arch/arm/include/asm/div64.h @@ -74,7 +74,7 @@ #elif __GNUC__ >= 4 -#include <asm/bug.h> +#include <xen/bug.h> /* * If the divisor happens to be constant, we determine the appropriate diff --git a/xen/arch/arm/vgic/vgic-v2.c b/xen/arch/arm/vgic/vgic-v2.c index 1a99d3a8b4..c90e88fddb 100644 --- a/xen/arch/arm/vgic/vgic-v2.c +++ b/xen/arch/arm/vgic/vgic-v2.c @@ -16,8 +16,8 @@ */ #include <asm/new_vgic.h> -#include <asm/bug.h> #include <asm/gic.h> +#include <xen/bug.h> #include <xen/sched.h> #include <xen/sizes.h> diff --git a/xen/arch/arm/vgic/vgic.c b/xen/arch/arm/vgic/vgic.c index f0f2ea5021..b9463a5f27 100644 --- a/xen/arch/arm/vgic/vgic.c +++ b/xen/arch/arm/vgic/vgic.c @@ -15,9 +15,9 @@ * along with this program. If not, see <http://www.gnu.org/licenses/>. */ +#include <xen/bug.h> #include <xen/list_sort.h> #include <xen/sched.h> -#include <asm/bug.h> #include <asm/event.h> #include <asm/new_vgic.h> diff --git a/xen/arch/x86/acpi/cpufreq/cpufreq.c b/xen/arch/x86/acpi/cpufreq/cpufreq.c index c27cbb2304..2e0067fbe5 100644 --- a/xen/arch/x86/acpi/cpufreq/cpufreq.c +++ b/xen/arch/x86/acpi/cpufreq/cpufreq.c @@ -35,7 +35,6 @@ #include <xen/sched.h> #include <xen/timer.h> #include <xen/xmalloc.h> -#include <asm/bug.h> #include <asm/msr.h> #include <asm/io.h> #include <asm/processor.h> diff --git a/xen/arch/x86/include/asm/asm_defns.h b/xen/arch/x86/include/asm/asm_defns.h index d9431180cf..baaaccb26e 100644 --- a/xen/arch/x86/include/asm/asm_defns.h +++ b/xen/arch/x86/include/asm/asm_defns.h @@ -6,8 +6,8 @@ /* NB. Auto-generated from arch/.../asm-offsets.c */ #include <asm/asm-offsets.h> #endif -#include <asm/bug.h> #include <asm/x86-defns.h> +#include <xen/bug.h> #include <xen/stringify.h> #include <asm/cpufeature.h> #include <asm/alternative.h> diff --git a/xen/arch/x86/include/asm/bug.h b/xen/arch/x86/include/asm/bug.h index b7265bdfbe..4b3e7b019d 100644 --- a/xen/arch/x86/include/asm/bug.h +++ b/xen/arch/x86/include/asm/bug.h @@ -1,19 +1,10 @@ #ifndef __X86_BUG_H__ #define __X86_BUG_H__ -#define BUG_DISP_WIDTH 24 -#define BUG_LINE_LO_WIDTH (31 - BUG_DISP_WIDTH) -#define BUG_LINE_HI_WIDTH (31 - BUG_DISP_WIDTH) - -#define BUGFRAME_run_fn 0 -#define BUGFRAME_warn 1 -#define BUGFRAME_bug 2 -#define BUGFRAME_assert 3 - -#define BUGFRAME_NR 4 - #ifndef __ASSEMBLY__ +#define BUG_FRAME_STRUCT + struct bug_frame { signed int loc_disp:BUG_DISP_WIDTH; unsigned int line_hi:BUG_LINE_HI_WIDTH; @@ -80,12 +71,6 @@ struct bug_frame { unreachable(); \ } while (0) -extern const struct bug_frame __start_bug_frames[], - __stop_bug_frames_0[], - __stop_bug_frames_1[], - __stop_bug_frames_2[], - __stop_bug_frames_3[]; - #else /* !__ASSEMBLY__ */ /* diff --git a/xen/drivers/cpufreq/cpufreq.c b/xen/drivers/cpufreq/cpufreq.c index a94520ee57..2321c7dd07 100644 --- a/xen/drivers/cpufreq/cpufreq.c +++ b/xen/drivers/cpufreq/cpufreq.c @@ -39,7 +39,6 @@ #include <xen/guest_access.h> #include <xen/domain.h> #include <xen/cpu.h> -#include <asm/bug.h> #include <asm/io.h> #include <asm/processor.h> diff --git a/xen/include/xen/lib.h b/xen/include/xen/lib.h index 05ee1e18af..e914ccade0 100644 --- a/xen/include/xen/lib.h +++ b/xen/include/xen/lib.h @@ -24,12 +24,12 @@ #ifndef __ASSEMBLY__ +#include <xen/bug.h> #include <xen/inttypes.h> #include <xen/stdarg.h> #include <xen/types.h> #include <xen/xmalloc.h> #include <xen/string.h> -#include <asm/bug.h> #define BUG_ON(p) do { if (unlikely(p)) BUG(); } while (0) #define WARN_ON(p) ({ \ -- 2.39.2

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