The patch titled uml: move sig_handler_common_skas has been added to the -mm tree. Its filename is uml-move-sig_handler_common_skas.patch *** Remember to use Documentation/SubmitChecklist when testing your code *** See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find out what to do about this ------------------------------------------------------ Subject: uml: move sig_handler_common_skas From: Jeff Dike <jdike@xxxxxxxxxxx> This patch moves sig_handler_common_skas from arch/um/os-Linux/skas/trap.c to its only caller in arch/um/os-Linux/signal.c. trap.c is now empty, so it can be removed. This is code movement only - the significant cleanup needed here is done in the next patch. Signed-off-by: Jeff Dike <jdike@xxxxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- arch/um/include/os.h | 3 - arch/um/os-Linux/signal.c | 62 ++++++++++++++++++++++++++ arch/um/os-Linux/skas/Makefile | 6 +- arch/um/os-Linux/skas/trap.c | 73 ------------------------------- 4 files changed, 65 insertions(+), 79 deletions(-) diff -puN arch/um/include/os.h~uml-move-sig_handler_common_skas arch/um/include/os.h --- a/arch/um/include/os.h~uml-move-sig_handler_common_skas +++ a/arch/um/include/os.h @@ -292,9 +292,6 @@ extern int add_sigio_fd(int fd); extern int ignore_sigio_fd(int fd); extern void maybe_sigio_broken(int fd, int read); -/* skas/trap */ -extern void sig_handler_common_skas(int sig, void *sc_ptr); - /* sys-x86_64/prctl.c */ extern int os_arch_prctl(int pid, int code, unsigned long *addr); diff -puN arch/um/os-Linux/signal.c~uml-move-sig_handler_common_skas arch/um/os-Linux/signal.c --- a/arch/um/os-Linux/signal.c~uml-move-sig_handler_common_skas +++ a/arch/um/os-Linux/signal.c @@ -9,12 +9,74 @@ #include <errno.h> #include <signal.h> #include <strings.h> +#include "as-layout.h" +#include "kern_constants.h" #include "kern_util.h" #include "os.h" #include "sysdep/barrier.h" #include "sysdep/sigcontext.h" +#include "task.h" #include "user.h" +void (*sig_info[NSIG])(int, struct uml_pt_regs *) = { + [SIGTRAP] = relay_signal, + [SIGFPE] = relay_signal, + [SIGILL] = relay_signal, + [SIGWINCH] = winch, + [SIGBUS] = bus_handler, + [SIGSEGV] = segv_handler, + [SIGIO] = sigio_handler, + [SIGVTALRM] = timer_handler }; + +static struct uml_pt_regs ksig_regs[UM_NR_CPUS]; + +void sig_handler_common_skas(int sig, void *sc_ptr) +{ + struct sigcontext *sc = sc_ptr; + struct uml_pt_regs *r; + void (*handler)(int, struct uml_pt_regs *); + int save_user, save_errno = errno; + + /* + * This is done because to allow SIGSEGV to be delivered inside a SEGV + * handler. This can happen in copy_user, and if SEGV is disabled, + * the process will die. + * XXX Figure out why this is better than SA_NODEFER + */ + if (sig == SIGSEGV) { + change_sig(SIGSEGV, 1); + /* + * For segfaults, we want the data from the + * sigcontext. In this case, we don't want to mangle + * the process registers, so use a static set of + * registers. For other signals, the process + * registers are OK. + */ + r = &ksig_regs[cpu()]; + copy_sc(r, sc_ptr); + } else + r = TASK_REGS(get_current()); + + save_user = r->is_user; + r->is_user = 0; + if ((sig == SIGFPE) || (sig == SIGSEGV) || (sig == SIGBUS) || + (sig == SIGILL) || (sig == SIGTRAP)) + GET_FAULTINFO_FROM_SC(r->faultinfo, sc); + + change_sig(SIGUSR1, 1); + + handler = sig_info[sig]; + + /* unblock SIGVTALRM, SIGIO if sig isn't IRQ signal */ + if ((sig != SIGIO) && (sig != SIGWINCH) && (sig != SIGVTALRM)) + unblock_signals(); + + handler(sig, r); + + errno = save_errno; + r->is_user = save_user; +} + /* Copied from linux/compiler-gcc.h since we can't include it directly */ #define barrier() __asm__ __volatile__("": : :"memory") diff -puN arch/um/os-Linux/skas/Makefile~uml-move-sig_handler_common_skas arch/um/os-Linux/skas/Makefile --- a/arch/um/os-Linux/skas/Makefile~uml-move-sig_handler_common_skas +++ a/arch/um/os-Linux/skas/Makefile @@ -1,10 +1,10 @@ # -# Copyright (C) 2002 - 2004 Jeff Dike (jdike@xxxxxxxxxxx) +# Copyright (C) 2002 - 2007 Jeff Dike (jdike@{linux.intel,addtoit}.com) # Licensed under the GPL # -obj-y := mem.o process.o trap.o +obj-y := mem.o process.o -USER_OBJS := mem.o process.o trap.o +USER_OBJS := $(obj-y) include arch/um/scripts/Makefile.rules diff -puN arch/um/os-Linux/skas/trap.c~uml-move-sig_handler_common_skas /dev/null --- a/arch/um/os-Linux/skas/trap.c +++ /dev/null @@ -1,73 +0,0 @@ -/* - * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) - * Licensed under the GPL - */ - -#include <errno.h> -#include <signal.h> -#include "sysdep/ptrace.h" -#include "kern_constants.h" -#include "as-layout.h" -#include "kern_util.h" -#include "os.h" -#include "sigcontext.h" -#include "task.h" - -void (*sig_info[NSIG])(int, struct uml_pt_regs *) = { - [SIGTRAP] = relay_signal, - [SIGFPE] = relay_signal, - [SIGILL] = relay_signal, - [SIGWINCH] = winch, - [SIGBUS] = bus_handler, - [SIGSEGV] = segv_handler, - [SIGIO] = sigio_handler, - [SIGVTALRM] = timer_handler }; - -static struct uml_pt_regs ksig_regs[UM_NR_CPUS]; - -void sig_handler_common_skas(int sig, void *sc_ptr) -{ - struct sigcontext *sc = sc_ptr; - struct uml_pt_regs *r; - void (*handler)(int, struct uml_pt_regs *); - int save_user, save_errno = errno; - - /* - * This is done because to allow SIGSEGV to be delivered inside a SEGV - * handler. This can happen in copy_user, and if SEGV is disabled, - * the process will die. - * XXX Figure out why this is better than SA_NODEFER - */ - if (sig == SIGSEGV) { - change_sig(SIGSEGV, 1); - /* - * For segfaults, we want the data from the - * sigcontext. In this case, we don't want to mangle - * the process registers, so use a static set of - * registers. For other signals, the process - * registers are OK. - */ - r = &ksig_regs[cpu()]; - copy_sc(r, sc_ptr); - } - else r = TASK_REGS(get_current()); - - save_user = r->is_user; - r->is_user = 0; - if ((sig == SIGFPE) || (sig == SIGSEGV) || (sig == SIGBUS) || - (sig == SIGILL) || (sig == SIGTRAP)) - GET_FAULTINFO_FROM_SC(r->faultinfo, sc); - - change_sig(SIGUSR1, 1); - - handler = sig_info[sig]; - - /* unblock SIGVTALRM, SIGIO if sig isn't IRQ signal */ - if ((sig != SIGIO) && (sig != SIGWINCH) && (sig != SIGVTALRM)) - unblock_signals(); - - handler(sig, r); - - errno = save_errno; - r->is_user = save_user; -} _ Patches currently in -mm which might be from jdike@xxxxxxxxxxx are git-kvm.patch git-x86.patch uml-add-asm-um-asmh.patch uml-arch-um-include-inith-needs-a-definition-of-__used.patch uml-implement-get_wchan.patch uml-implement-get_wchan-fix.patch uml-get-rid-of-asmlinkage.patch uml-get-rid-of-asmlinkage-checkpatch-fixes.patch uml-document-new-ubd-flag.patch uml-further-bugsc-tidying.patch uml-further-bugsc-tidying-checkpatch-fixes.patch uml-smp-needs-to-depend-on-broken-for-now.patch uml-console-driver-cleanups.patch uml-clonec-tidying.patch uml-borrow-consth-techniques.patch uml-delete-some-unused-headers.patch uml-allow-lflags-on-command-line.patch uml-tidy-kern_utilh.patch uml-tidy-pgtableh.patch uml-tidy-pgtableh-fix.patch uml-reconst-a-parameter.patch arch-um-remove-duplicate-includes.patch uml-host-tls-diagnostics.patch uml-move-um_virt_to_phys.patch uml-header-untangling.patch uml-style-cleanup.patch uml-currenth-cleanup.patch uml-fix-page-table-data-sizes.patch uml-add-virt_to_pte.patch uml-simplify-sigsegv-handling.patch uml-use-ptrace-directly-in-libc-code.patch uml-kill-processes-instead-of-panicing-kernel.patch uml-clean-up-task_size-usage.patch uml-cover-stubs-with-a-vma.patch uml-fix-command-line-cflags-and-ldflags-support.patch uml-style-fixes-in-arch-um-os-linux.patch uml-miscellaneous-code-cleanups.patch uml-style-fixes-in-filec.patch uml-64-bit-tlb-fixes.patch uml-customize-tlbh.patch uml-runtime-detection-of-host-vmsplit-on-i386.patch uml-eliminate-setjmp_wrapper.patch uml-install-panic-notifier-earlier.patch uml-use-barrier-instead-of-mb.patch uml-tidy-helper-code.patch uml-dont-kill-pid-0.patch uml-get-rid-of-syscall-counters.patch uml-dont-allow-processes-to-call-into-stub.patch uml-move-sig_handler_common_skas.patch uml-clean-up-sig_handler_common_skas.patch fix-__const_udelay-declaration-and-definition-mismatches.patch create-arch-kconfig.patch add-have_oprofile.patch add-have_kprobes.patch move-kconfiginstrumentation-to-arch-kconfig-and-init-kconfig.patch iget-stop-hostfs-from-using-iget-and-read_inode.patch iget-stop-hostfs-from-using-iget-and-read_inode-checkpatch-fixes.patch - To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html