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    Subject[PATCH 07/11] uml: remove dead code about os_usr1_signal() and os_usr1_process()
    Date
    From: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>

    os_usr1_signal() is totally unused, os_usr1_process() is used only by TT mode.

    Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
    ---

    arch/um/include/os.h | 3 ++-
    arch/um/os-Linux/process.c | 3 +++
    arch/um/os-Linux/signal.c | 5 -----
    3 files changed, 5 insertions(+), 6 deletions(-)

    diff --git a/arch/um/include/os.h b/arch/um/include/os.h
    index 8629bd1..5c74da4 100644
    --- a/arch/um/include/os.h
    +++ b/arch/um/include/os.h
    @@ -192,7 +192,9 @@ extern int os_process_parent(int pid);
    extern void os_stop_process(int pid);
    extern void os_kill_process(int pid, int reap_child);
    extern void os_kill_ptraced_process(int pid, int reap_child);
    +#ifdef UML_CONFIG_MODE_TT
    extern void os_usr1_process(int pid);
    +#endif
    extern long os_ptrace_ldt(long pid, long addr, long data);

    extern int os_getpid(void);
    @@ -261,7 +263,6 @@ extern void block_signals(void);
    extern void unblock_signals(void);
    extern int get_signals(void);
    extern int set_signals(int enable);
    -extern void os_usr1_signal(int on);

    /* trap.c */
    extern void os_fill_handlinfo(struct kern_handlers h);
    diff --git a/arch/um/os-Linux/process.c b/arch/um/os-Linux/process.c
    index c692a19..76bdd67 100644
    --- a/arch/um/os-Linux/process.c
    +++ b/arch/um/os-Linux/process.c
    @@ -21,6 +21,7 @@
    #include "longjmp.h"
    #include "skas_ptrace.h"
    #include "kern_constants.h"
    +#include "uml-config.h"

    #define ARBITRARY_ADDR -1
    #define FAILURE_PID -1
    @@ -131,10 +132,12 @@ void os_kill_ptraced_process(int pid, int reap_child)
    CATCH_EINTR(waitpid(pid, NULL, 0));
    }

    +#ifdef UML_CONFIG_MODE_TT
    void os_usr1_process(int pid)
    {
    kill(pid, SIGUSR1);
    }
    +#endif

    /* Don't use the glibc version, which caches the result in TLS. It misses some
    * syscalls, and also breaks with clone(), which does not unshare the TLS.
    diff --git a/arch/um/os-Linux/signal.c b/arch/um/os-Linux/signal.c
    index b897e85..2667686 100644
    --- a/arch/um/os-Linux/signal.c
    +++ b/arch/um/os-Linux/signal.c
    @@ -243,8 +243,3 @@ int set_signals(int enable)

    return ret;
    }
    -
    -void os_usr1_signal(int on)
    -{
    - change_sig(SIGUSR1, on);
    -}

    -
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