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    Subject[PATCH 14/14] tracing: make a "compat_syscalls" tracing subsys
    Create a new "compat_syscalls" subsys for tracing

    Signed-off-by: Jason Baron <jbaron@redhat.com>
    ---
    include/linux/syscalls.h | 38 +++++++++++++++++++-------------------
    1 files changed, 19 insertions(+), 19 deletions(-)

    diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h
    index 501cd46..94caf73 100644
    --- a/include/linux/syscalls.h
    +++ b/include/linux/syscalls.h
    @@ -128,7 +128,7 @@ struct perf_event_attr;
    #define __SC_STR_TDECL5(t, a, ...) #t, __SC_STR_TDECL4(__VA_ARGS__)
    #define __SC_STR_TDECL6(t, a, ...) #t, __SC_STR_TDECL5(__VA_ARGS__)

    -#define SYSCALL_TRACE_ENTER_EVENT(sname) \
    +#define SYSCALL_TRACE_ENTER_EVENT(sname, subsys) \
    static const struct syscall_metadata __syscall_meta_##sname; \
    static struct ftrace_event_call \
    __attribute__((__aligned__(4))) event_enter_##sname; \
    @@ -140,7 +140,7 @@ struct perf_event_attr;
    __attribute__((section("_ftrace_events"))) \
    event_enter_##sname = { \
    .name = "enter_"#sname, \
    - .system = "syscalls", \
    + .system = #subsys, \
    .event = &enter_syscall_print_##sname, \
    .raw_init = init_syscall_trace, \
    .define_fields = syscall_enter_define_fields, \
    @@ -150,7 +150,7 @@ struct perf_event_attr;
    TRACE_SYS_ENTER_PROFILE_INIT \
    }

    -#define SYSCALL_TRACE_EXIT_EVENT(sname) \
    +#define SYSCALL_TRACE_EXIT_EVENT(sname, subsys) \
    static const struct syscall_metadata __syscall_meta_##sname; \
    static struct ftrace_event_call \
    __attribute__((__aligned__(4))) event_exit_##sname; \
    @@ -162,7 +162,7 @@ struct perf_event_attr;
    __attribute__((section("_ftrace_events"))) \
    event_exit_##sname = { \
    .name = "exit_"#sname, \
    - .system = "syscalls", \
    + .system = #subsys, \
    .event = &exit_syscall_print_##sname, \
    .raw_init = init_syscall_trace, \
    .define_fields = syscall_exit_define_fields, \
    @@ -172,9 +172,9 @@ struct perf_event_attr;
    TRACE_SYS_EXIT_PROFILE_INIT \
    }

    -#define SYSCALL_METADATA(rname, sname, nb) \
    - SYSCALL_TRACE_ENTER_EVENT(sname); \
    - SYSCALL_TRACE_EXIT_EVENT(sname); \
    +#define SYSCALL_METADATA(rname, sname, nb, subsys) \
    + SYSCALL_TRACE_ENTER_EVENT(sname, subsys); \
    + SYSCALL_TRACE_EXIT_EVENT(sname, subsys); \
    static const struct syscall_metadata __used \
    __attribute__((__aligned__(4))) \
    __attribute__((section("__syscalls_metadata"))) \
    @@ -192,8 +192,8 @@ struct perf_event_attr;
    };

    #define SYSCALL_DEFINE0(sname) \
    - SYSCALL_TRACE_ENTER_EVENT(sys_##sname); \
    - SYSCALL_TRACE_EXIT_EVENT(sys_##sname); \
    + SYSCALL_TRACE_ENTER_EVENT(sys_##sname, syscalls); \
    + SYSCALL_TRACE_EXIT_EVENT(sys_##sname, syscalls); \
    static const struct syscall_metadata __used \
    __attribute__((__aligned__(4))) \
    __attribute__((section("__syscalls_metadata"))) \
    @@ -236,17 +236,17 @@ struct perf_event_attr;
    #define COMPAT_SYSCALL_DEFINE6(name, ...) COMPAT_SYSCALL_DEFINEx(6, compat_sys_##name, name, __VA_ARGS__)

    #ifdef CONFIG_FTRACE_SYSCALLS
    -#define COMPAT_SYSCALL_DEFINEx(x, syscall, sname, ...) \
    - static const char *types_compat_sys_##sname[] = { \
    - __SC_STR_TDECL##x(__VA_ARGS__) \
    - }; \
    - static const char *args_compat_sys_##sname[] = { \
    - __SC_STR_ADECL##x(__VA_ARGS__) \
    - }; \
    - SYSCALL_METADATA(syscall, compat_sys_##sname, x); \
    +#define COMPAT_SYSCALL_DEFINEx(x, syscall, sname, ...) \
    + static const char *types_compat_sys_##sname[] = { \
    + __SC_STR_TDECL##x(__VA_ARGS__) \
    + }; \
    + static const char *args_compat_sys_##sname[] = { \
    + __SC_STR_ADECL##x(__VA_ARGS__) \
    + }; \
    + SYSCALL_METADATA(syscall, compat_sys_##sname, x, compat_syscalls);\
    asmlinkage long syscall(__SC_DECL##x(__VA_ARGS__))
    #else
    -#define COMPAT_SYSCALL_DEFINEx(x, sname, ...) \
    +#define COMPAT_SYSCALL_DEFINEx(x, sname, ...) \
    asmlinkage long syscall(__SC_DECL##x(__VA_ARGS__))
    #endif

    @@ -274,7 +274,7 @@ struct perf_event_attr;
    static const char *args_sys##sname[] = { \
    __SC_STR_ADECL##x(__VA_ARGS__) \
    }; \
    - SYSCALL_METADATA(sys##sname, sys##sname, x); \
    + SYSCALL_METADATA(sys##sname, sys##sname, x, syscalls); \
    __SYSCALL_DEFINEx(x, sname, __VA_ARGS__)
    #else
    #define SYSCALL_DEFINEx(x, sname, ...) \
    --
    1.6.5.1


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