Merge tag 'frv-fixes-20121102' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowe...

Pull FRV fixes from David Howells:
 "A collection of small fixes for the FRV architecture."

* tag 'frv-fixes-20121102' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-frv:
  frv: fix the broken preempt
  frv: switch to saner kernel_execve() semantics
  FRV: Fix the new-style kernel_thread() stuff
  FRV: Fix the preemption handling
  FRV: gcc-4.1.2 also inlines weak functions
  FRV: Don't objcopy the GNU build_id note
  FRV: Add missing linux/export.h #inclusions

diff --git a/arch/frv/Kconfig b/arch/frv/Kconfig
index b7412504f08a2c91635c6f75da624a59b6a6a953..df2eb4bd9fa2abbaa06c6978537fcabc88c22cf7 100644 (file)
--- a/arch/frv/Kconfig
+++ b/arch/frv/Kconfig
@@ -13,6 +13,7 @@ config FRV
        select GENERIC_CPU_DEVICES
        select ARCH_WANT_IPC_PARSE_VERSION
        select GENERIC_KERNEL_THREAD
+       select GENERIC_KERNEL_EXECVE
 
 config ZONE_DMA
        bool

diff --git a/arch/frv/boot/Makefile b/arch/frv/boot/Makefile
index 6ae3254da01976b6fdaa374f588c3c58a081058c..636d5bbcd53f31ca5cbbb96ca9f3e29f501fdfff 100644 (file)
--- a/arch/frv/boot/Makefile
+++ b/arch/frv/boot/Makefile
@@ -17,6 +17,8 @@ PARAMS_PHYS    = 0x0207c000
 INITRD_PHYS     = 0x02180000
 INITRD_VIRT     = 0x02180000
 
+OBJCOPYFLAGS   :=-O binary -R .note -R .note.gnu.build-id -R .comment
+
 #
 # If you don't define ZRELADDR above,
 # then it defaults to ZTEXTADDR
@@ -32,18 +34,18 @@ Image: $(obj)/Image
 targets: $(obj)/Image
 
 $(obj)/Image: vmlinux FORCE
-       $(OBJCOPY) -O binary -R .note -R .comment -S vmlinux $@
+       $(OBJCOPY) $(OBJCOPYFLAGS) -S vmlinux $@
 
 #$(obj)/Image: $(CONFIGURE) $(SYSTEM)
-#      $(OBJCOPY) -O binary -R .note -R .comment -g -S $(SYSTEM) $@
+#      $(OBJCOPY) $(OBJCOPYFLAGS) -g -S $(SYSTEM) $@
 
 bzImage: zImage
 
 zImage:        $(CONFIGURE) compressed/$(LINUX)
-       $(OBJCOPY) -O binary -R .note -R .comment -S compressed/$(LINUX) $@
+       $(OBJCOPY) $(OBJCOPYFLAGS) -S compressed/$(LINUX) $@
 
 bootpImage: bootp/bootp
-       $(OBJCOPY) -O binary -R .note -R .comment -S bootp/bootp $@
+       $(OBJCOPY) $(OBJCOPYFLAGS) -S bootp/bootp $@
 
 compressed/$(LINUX): $(LINUX) dep
        @$(MAKE) -C compressed $(LINUX)

diff --git a/arch/frv/include/asm/unistd.h b/arch/frv/include/asm/unistd.h
index 266a5b25a0c1698347715c91fd45b7e95b8eb864..2358634caccaa6b50a8cad83fb0601e1350e71d0 100644 (file)
--- a/arch/frv/include/asm/unistd.h
+++ b/arch/frv/include/asm/unistd.h
@@ -30,7 +30,6 @@
 #define __ARCH_WANT_SYS_RT_SIGACTION
 #define __ARCH_WANT_SYS_RT_SIGSUSPEND
 #define __ARCH_WANT_SYS_EXECVE
-#define __ARCH_WANT_KERNEL_EXECVE
 
 /*
  * "Conditional" syscalls

diff --git a/arch/frv/kernel/entry.S b/arch/frv/kernel/entry.S
index ee0beb354e4df38e0c067410e8f9643deec2856f..dfcd263c05176ea6cdbf3c169070a93fe79b8f5b 100644 (file)
--- a/arch/frv/kernel/entry.S
+++ b/arch/frv/kernel/entry.S
@@ -869,11 +869,6 @@ ret_from_kernel_thread:
        call            schedule_tail
        calll.p         @(gr21,gr0)
        or              gr20,gr20,gr8
-       bra             sys_exit
-
-       .globl          ret_from_kernel_execve
-ret_from_kernel_execve:
-       ori             gr28,0,sp
        bra             __syscall_exit
 
 ###################################################################################################
@@ -1080,27 +1075,10 @@ __entry_return_from_kernel_interrupt:
        subicc          gr5,#0,gr0,icc0
        beq             icc0,#0,__entry_return_direct
 
-__entry_preempt_need_resched:
-       ldi             @(gr15,#TI_FLAGS),gr4
-       andicc          gr4,#_TIF_NEED_RESCHED,gr0,icc0
-       beq             icc0,#1,__entry_return_direct
-
-       setlos          #PREEMPT_ACTIVE,gr5
-       sti             gr5,@(gr15,#TI_FLAGS)
-
-       andi            gr23,#~PSR_PIL,gr23
-       movgs           gr23,psr
-
-       call            schedule
-       sti             gr0,@(gr15,#TI_PRE_COUNT)
-
-       movsg           psr,gr23
-       ori             gr23,#PSR_PIL_14,gr23
-       movgs           gr23,psr
-       bra             __entry_preempt_need_resched
-#else
-       bra             __entry_return_direct
+       subcc           gr0,gr0,gr0,icc2                /* set Z and clear C */
+       call            preempt_schedule_irq
 #endif
+       bra             __entry_return_direct
 
 
 ###############################################################################

diff --git a/arch/frv/kernel/process.c b/arch/frv/kernel/process.c
index e1e3aa196aa4c25adcb33ed09fe1296b4be8e69d..7e33215f1d8fabfd28a1aa5c5144a8e73f621a90 100644 (file)
--- a/arch/frv/kernel/process.c
+++ b/arch/frv/kernel/process.c
@@ -181,6 +181,9 @@ int copy_thread(unsigned long clone_flags,
        childregs = (struct pt_regs *)
                (task_stack_page(p) + THREAD_SIZE - FRV_FRAME0_SIZE);
 
+       /* set up the userspace frame (the only place that the USP is stored) */
+       *childregs = *__kernel_frame0_ptr;
+
        p->set_child_tid = p->clear_child_tid = NULL;
 
        p->thread.frame  = childregs;
@@ -191,10 +194,8 @@ int copy_thread(unsigned long clone_flags,
        p->thread.frame0 = childregs;
 
        if (unlikely(!regs)) {
-               memset(childregs, 0, sizeof(struct pt_regs));
                childregs->gr9 = usp; /* function */
                childregs->gr8 = arg;
-               childregs->psr = PSR_S;
                p->thread.pc = (unsigned long) ret_from_kernel_thread;
                save_user_regs(p->thread.user);
                return 0;

diff --git a/arch/frv/mb93090-mb00/pci-dma-nommu.c b/arch/frv/mb93090-mb00/pci-dma-nommu.c
index e47857f889b6d2a18dcf839249bae5f7af66f334..b99c2a7cc7a41f6a0398c4a34715749d2a935afc 100644 (file)
--- a/arch/frv/mb93090-mb00/pci-dma-nommu.c
+++ b/arch/frv/mb93090-mb00/pci-dma-nommu.c
@@ -11,6 +11,7 @@
 
 #include <linux/types.h>
 #include <linux/slab.h>
+#include <linux/export.h>
 #include <linux/dma-mapping.h>
 #include <linux/list.h>
 #include <linux/pci.h>

diff --git a/init/main.c b/init/main.c
index 9cf77ab138a68738bb6926b8b31aaf6ba8cd4f6e..e33e09df3cbc61ad11736776ef4138010df1de8e 100644 (file)
--- a/init/main.c
+++ b/init/main.c
@@ -442,9 +442,11 @@ void __init __weak smp_setup_processor_id(void)
 {
 }
 
+# if THREAD_SIZE >= PAGE_SIZE
 void __init __weak thread_info_cache_init(void)
 {
 }
+#endif
 
 /*
  * Set up kernel memory allocators