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2015-09-05CRIS: UAPI: use generic types.hRabin Vincent3-13/+1
CRIS' types.h is functionally identical to the asm-generic version. Effective diff: +#ifndef _ASM_GENERIC_TYPES_H +#define _ASM_GENERIC_TYPES_H + #include <asm-generic/int-ll64.h> + +#endif Signed-off-by: Rabin Vincent <rabin@rab.in> Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2015-09-05CRIS: UAPI: use generic shmbuf.hRabin Vincent2-42/+1
CRIS' shmbuf.h is equivalent to the asm-generic verison. Effective diff: -#ifndef _CRIS_SHMBUF_H -#define _CRIS_SHMBUF_H +#ifndef __ASM_GENERIC_SHMBUF_H +#define __ASM_GENERIC_SHMBUF_H + +#include <asm/bitsperlong.h> struct ipc64_perm shm_perm; size_t shm_segsz; __kernel_time_t shm_atime; +#if __BITS_PER_LONG != 64 unsigned long __unused1; +#endif __kernel_time_t shm_dtime; +#if __BITS_PER_LONG != 64 unsigned long __unused2; +#endif __kernel_time_t shm_ctime; +#if __BITS_PER_LONG != 64 unsigned long __unused3; +#endif __kernel_pid_t shm_cpid; __kernel_pid_t shm_lpid; - unsigned long shm_nattch; - unsigned long __unused4; - unsigned long __unused5; + __kernel_ulong_t shm_nattch; + __kernel_ulong_t __unused4; + __kernel_ulong_t __unused5; }; struct shminfo64 { - unsigned long shmmax; - unsigned long shmmin; - unsigned long shmmni; - unsigned long shmseg; - unsigned long shmall; - unsigned long __unused1; - unsigned long __unused2; - unsigned long __unused3; - unsigned long __unused4; + __kernel_ulong_t shmmax; + __kernel_ulong_t shmmin; + __kernel_ulong_t shmmni; + __kernel_ulong_t shmseg; + __kernel_ulong_t shmall; + __kernel_ulong_t __unused1; + __kernel_ulong_t __unused2; + __kernel_ulong_t __unused3; + __kernel_ulong_t __unused4; }; #endif Signed-off-by: Rabin Vincent <rabin@rab.in> Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2015-09-05CRIS: UAPI: use generic msgbuf.hRabin Vincent2-33/+1
CRIS' msgbuf.h is equivalent to the asm-generic version. Effective diff: -#ifndef _CRIS_MSGBUF_H -#define _CRIS_MSGBUF_H - - +#ifndef __ASM_GENERIC_MSGBUF_H +#define __ASM_GENERIC_MSGBUF_H +#include <asm/bitsperlong.h> struct msqid64_ds { struct ipc64_perm msg_perm; __kernel_time_t msg_stime; +#if __BITS_PER_LONG != 64 unsigned long __unused1; +#endif __kernel_time_t msg_rtime; +#if __BITS_PER_LONG != 64 unsigned long __unused2; +#endif __kernel_time_t msg_ctime; +#if __BITS_PER_LONG != 64 unsigned long __unused3; - unsigned long msg_cbytes; - unsigned long msg_qnum; - unsigned long msg_qbytes; +#endif + __kernel_ulong_t msg_cbytes; + __kernel_ulong_t msg_qnum; + __kernel_ulong_t msg_qbytes; __kernel_pid_t msg_lspid; __kernel_pid_t msg_lrpid; - unsigned long __unused4; - unsigned long __unused5; + __kernel_ulong_t __unused4; + __kernel_ulong_t __unused5; }; #endif Signed-off-by: Rabin Vincent <rabin@rab.in> Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2015-09-05CRIS: UAPI: use generic socket.hRabin Vincent2-92/+1
CRIS' socket.h is equivalent to the asm-generic version. Effective diff: -#ifndef _ASM_SOCKET_H -#define _ASM_SOCKET_H - - +#ifndef __ASM_GENERIC_SOCKET_H +#define __ASM_GENERIC_SOCKET_H #include <asm/sockios.h> #define SO_LINGER 13 #define SO_BSDCOMPAT 14 #define SO_REUSEPORT 15 +#ifndef SO_PASSCRED #define SO_PASSCRED 16 #define SO_PEERCRED 17 #define SO_RCVLOWAT 18 #define SO_SNDLOWAT 19 #define SO_RCVTIMEO 20 #define SO_SNDTIMEO 21 +#endif #define SO_SECURITY_AUTHENTICATION 22 Signed-off-by: Rabin Vincent <rabin@rab.in> Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2015-09-05CRIS: UAPI: use generic sembuf.hRabin Vincent2-25/+1
CRIS's sembuf.h is equivalent to the asm-generic version. Effective diff: -#ifndef _CRIS_SEMBUF_H -#define _CRIS_SEMBUF_H +#ifndef __ASM_GENERIC_SEMBUF_H +#define __ASM_GENERIC_SEMBUF_H +#include <asm/bitsperlong.h> struct semid64_ds { struct ipc64_perm sem_perm; __kernel_time_t sem_otime; +#if __BITS_PER_LONG != 64 unsigned long __unused1; +#endif __kernel_time_t sem_ctime; +#if __BITS_PER_LONG != 64 unsigned long __unused2; +#endif unsigned long sem_nsems; unsigned long __unused3; unsigned long __unused4; Signed-off-by: Rabin Vincent <rabin@rab.in> Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2015-09-05CRIS: UAPI: use generic sockios.hRabin Vincent2-13/+1
CRIS' sockios.h is equivalent to the asm-generic version. Effective diff: -#ifndef __ARCH_CRIS_SOCKIOS__ -#define __ARCH_CRIS_SOCKIOS__ +#ifndef __ASM_GENERIC_SOCKIOS_H +#define __ASM_GENERIC_SOCKIOS_H Signed-off-by: Rabin Vincent <rabin@rab.in> Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2015-09-05CRIS: UAPI: use generic auxvec.hRabin Vincent2-4/+1
CRIS's auxvec.h is empty just like the asm-generic version. Effective diff: -#ifndef __ASMCRIS_AUXVEC_H -#define __ASMCRIS_AUXVEC_H +#ifndef __ASM_GENERIC_AUXVEC_H +#define __ASM_GENERIC_AUXVEC_H + Signed-off-by: Rabin Vincent <rabin@rab.in> Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2015-09-05CRIS: UAPI: use generic headers via KbuildRabin Vincent12-31/+10
Use Kbuild magic to include the generic headers. Signed-off-by: Rabin Vincent <rabin@rab.in> Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2015-09-05CRIS: UAPI: fix elf.h exportRabin Vincent4-1/+8
CRIS userspace (uClibc for one) expects asm/elf.h to be exported but this header appears to have gone missing at some point. Move it to uapi/ and export it. Signed-off-by: Rabin Vincent <rabin@rab.in> Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2015-09-05CRIS: don't make asm/elf.h depend on asm/user.hRabin Vincent3-8/+7
We're going to export asm/elf.h; remove its dependencies on the non-exported asm/user.h and the unused asm/system.h include. Signed-off-by: Rabin Vincent <rabin@rab.in> Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2015-09-05CRIS: UAPI: fix ptrace.hRabin Vincent6-3/+8
The exported ptrace.h header on CRIS references an "arch" directory which does not exist. Fix this by having the variants in the same directory and including them conditionally, similar to other architectures. Signed-off-by: Rabin Vincent <rabin@rab.in> Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2015-09-05CRISv32: Squash compile warnings for axisflashmapJesper Nilsson1-4/+5
Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2015-09-05CRISv32: Add GPIO driver to the default configsJesper Nilsson4-14/+12
Fix a number of small issues visible when GPIO is enabled: - Correct missing default for !ETRAXFS in Kconfig - Remove information on number of bits for some Kconfigs related to the GPIO, they are different in ETRAX FS and ARTPEC-3 - Fix compile warning in ARTPEC-3 GPIO driver Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2015-09-05CRISv32: ETRAX FS: Squash warnings in pinmux driverJesper Nilsson1-2/+6
Squash the followng warnings arch/cris/arch-v32/mach-fs/pinmux.c: In function 'crisv32_pinmux_alloc_fixed': arch/cris/arch-v32/mach-fs/pinmux.c:104:2: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement] arch/cris/arch-v32/mach-fs/pinmux.c: In function 'crisv32_pinmux_dealloc_fixed': arch/cris/arch-v32/mach-fs/pinmux.c:238:2: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement] arch/cris/arch-v32/mach-fs/pinmux.c: In function '__crisv32_pinmux_alloc': arch/cris/arch-v32/mach-fs/pinmux.c:49:1: warning: control reaches end of non-void function [-Wreturn-type] Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2015-09-05CRIS: Wire up missing syscallsChen Gang4-1/+25
The related warnings: CALL scripts/checksyscalls.sh <stdin>:1229:2: warning: #warning syscall sched_setattr not implemented [-Wcpp] <stdin>:1232:2: warning: #warning syscall sched_getattr not implemented [-Wcpp] <stdin>:1235:2: warning: #warning syscall renameat2 not implemented [-Wcpp] <stdin>:1238:2: warning: #warning syscall seccomp not implemented [-Wcpp] <stdin>:1241:2: warning: #warning syscall getrandom not implemented [-Wcpp] <stdin>:1244:2: warning: #warning syscall memfd_create not implemented [-Wcpp] <stdin>:1247:2: warning: #warning syscall bpf not implemented [-Wcpp] <stdin>:1250:2: warning: #warning syscall execveat not implemented [-Wcpp] Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com> Signed-off-by: Jesper Nilsson <jespern@axis.com>
2015-09-05CRISv32: allow CONFIG_DEBUG_BUGVERBOSERabin Vincent1-0/+1
Support for verbose BUG reporting already exists, but the HAVE flag that allows the option to be enabled is missing. Signed-off-by: Rabin Vincent <rabin@rab.in> Signed-off-by: Jesper Nilsson <jespern@axis.com>
2015-09-05CRISv32: add unreachable() to BUG()Rabin Vincent1-2/+9
Add an unreachable() in the BUG() implementations, to get rid of several warnings similar to the one below: kernel/sched/core.c: In function 'pick_next_task': kernel/sched/core.c:2690:1: warning: control reaches end of non-void function [-Wreturn-type] Signed-off-by: Rabin Vincent <rabin@rab.in> Signed-off-by: Jesper Nilsson <jespern@axis.com>
2015-09-05cris: arch-v32: gpio: Use kzalloc instead of kmalloc/memsetChristophe Jaillet1-2/+1
Turn a kmalloc/memset into an equivalent kzalloc. Doing so also move the zero'ing of the memory outside of a mutex. Signed-off-by: Christophe Jaillet <christophe.jaillet@wanadoo.fr> Signed-off-by: Jesper Nilsson <jespern@axis.com>
2015-08-10cris/time: Migrate to new 'set-state' interfaceViresh Kumar1-3/+5
Migrate cris driver to the new 'set-state' interface provided by clockevents core, the earlier 'set-mode' interface is marked obsolete now. This also enables us to implement callbacks for new states of clockevent devices, for example: ONESHOT_STOPPED. Cc: Mikael Starvik <starvik@axis.com> Cc: Jesper Nilsson <jesper.nilsson@axis.com> Cc: Rabin Vincent <rabin@rab.in> Cc: Guenter Roeck <linux@roeck-us.net> Cc: linux-cris-kernel@axis.com Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2015-07-17mm: clean up per architecture MM hook header filesLaurent Dufour2-15/+1
Commit 2ae416b142b6 ("mm: new mm hook framework") introduced an empty header file (mm-arch-hooks.h) for every architecture, even those which doesn't need to define mm hooks. As suggested by Geert Uytterhoeven, this could be cleaned through the use of a generic header file included via each per architecture asm/include/Kbuild file. The PowerPC architecture is not impacted here since this architecture has to defined the arch_remap MM hook. Signed-off-by: Laurent Dufour <ldufour@linux.vnet.ibm.com> Suggested-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Vineet Gupta <vgupta@synopsys.com> Cc: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-07-09cris: Replace do_posix_clock_monotonic_gettime()Thomas Gleixner1-1/+1
ktime_get_ts() is the proper interface today. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Jesper Nilsson <jesper.nilsson@axis.com>
2015-07-02Merge tag 'module_init-device_initcall-v4.1-rc8' of ↵Linus Torvalds2-4/+2
git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux Pull module_init replacement part one from Paul Gortmaker: "Replace module_init with equivalent device_initcall in non modules. This series of commits converts non-modular code that is using the module_init() call to hook itself into the system to instead use device_initcall(). The conversion is a runtime no-op, since module_init actually becomes __initcall in the non-modular case, and that in turn gets mapped onto device_initcall. A couple files show a larger negative diffstat, representing ones that had a module_exit function that we remove here vs previously relying on the linker to dispose of it. We make this conversion now, so that we can relocate module_init from init.h into module.h in the future. The files changed here are just limited to those that would otherwise have to add module.h to obviously non-modular code, in order to avoid a compile fail, as testing has shown" * tag 'module_init-device_initcall-v4.1-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux: MIPS: don't use module_init in non-modular cobalt/mtd.c file drivers/leds: don't use module_init in non-modular leds-cobalt-raq.c cris: don't use module_init for non-modular core eeprom.c code tty/metag_da: Avoid module_init/module_exit in non-modular code drivers/clk: don't use module_init in clk-nomadik.c which is non-modular xtensa: don't use module_init for non-modular core network.c code sh: don't use module_init in non-modular psw.c code mn10300: don't use module_init in non-modular flash.c code parisc64: don't use module_init for non-modular core perf code parisc: don't use module_init for non-modular core pdc_cons code cris: don't use module_init for non-modular core intmem.c code ia64: don't use module_init in non-modular sim/simscsi.c code ia64: don't use module_init for non-modular core kernel/mca.c code arm: don't use module_init in non-modular mach-vexpress/spc.c code powerpc: don't use module_init in non-modular 83xx suspend code powerpc: use device_initcall for registering rtc devices x86: don't use module_init in non-modular devicetree.c code x86: don't use module_init in non-modular intel_mid_vrtc.c
2015-06-25Merge branch 'for-4.2/sg' of git://git.kernel.dk/linux-blockLinus Torvalds3-3/+2
Pull asm/scatterlist.h removal from Jens Axboe: "We don't have any specific arch scatterlist anymore, since parisc finally switched over. Kill the include" * 'for-4.2/sg' of git://git.kernel.dk/linux-block: remove scatterlist.h generation from arch Kbuild files remove <asm/scatterlist.h>
2015-06-24mm: new mm hook frameworkLaurent Dufour1-0/+15
CRIU is recreating the process memory layout by remapping the checkpointee memory area on top of the current process (criu). This includes remapping the vDSO to the place it has at checkpoint time. However some architectures like powerpc are keeping a reference to the vDSO base address to build the signal return stack frame by calling the vDSO sigreturn service. So once the vDSO has been moved, this reference is no more valid and the signal frame built later are not usable. This patch serie is introducing a new mm hook framework, and a new arch_remap hook which is called when mremap is done and the mm lock still hold. The next patch is adding the vDSO remap and unmap tracking to the powerpc architecture. This patch (of 3): This patch introduces a new set of header file to manage mm hooks: - per architecture empty header file (arch/x/include/asm/mm-arch-hooks.h) - a generic header (include/linux/mm-arch-hooks.h) The architecture which need to overwrite a hook as to redefine it in its header file, while architecture which doesn't need have nothing to do. The default hooks are defined in the generic header and are used in the case the architecture is not defining it. In a next step, mm hooks defined in include/asm-generic/mm_hooks.h should be moved here. Signed-off-by: Laurent Dufour <ldufour@linux.vnet.ibm.com> Suggested-by: Andrew Morton <akpm@linux-foundation.org> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Cc: Hugh Dickins <hughd@google.com> Cc: Rik van Riel <riel@redhat.com> Cc: Mel Gorman <mgorman@suse.de> Cc: Pavel Emelyanov <xemul@parallels.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Ingo Molnar <mingo@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-06-16cris: don't use module_init for non-modular core eeprom.c codePaul Gortmaker1-2/+1
The eeprom.c code is compiled based on the Kconfig setting ETRAX_I2C_EEPROM, which is bool. So the code is either built in or absent. It will never be modular, so using module_init as an alias for __initcall is rather misleading. Fix this up now, so that we can relocate module_init from init.h into module.h in the future. If we don't do this, we'd have to add module.h to obviously non-modular code, and that would be a worse thing. Direct use of __initcall is discouraged, vs prioritized ones. Use of device_initcall is consistent with what __initcall maps onto, and hence does not change the init order, making the impact of this change zero. Should someone with real hardware for boot testing want to change it later to arch_initcall or something different, they can do that at a later date. Cc: Mikael Starvik <starvik@axis.com> Cc: Jesper Nilsson <jesper.nilsson@axis.com> Cc: linux-cris-kernel@axis.com Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2015-06-16cris: don't use module_init for non-modular core intmem.c codePaul Gortmaker1-2/+1
The intmem.c code is always built in. It will never be modular, so using module_init as an alias for __initcall is rather misleading. Fix this up now, so that we can relocate module_init from init.h into module.h in the future. If we don't do this, we'd have to add module.h to obviously non-modular code, and that would be a worse thing. Direct use of __initcall is discouraged, vs prioritized ones. Use of device_initcall is consistent with what __initcall maps onto, and hence does not change the init order, making the impact of this change zero. Should someone with real hardware for boot testing want to change it later to arch_initcall or something different, they can do that at a later date. Reported-by: kbuild test robot <fengguang.wu@intel.com> Cc: Mikael Starvik <starvik@axis.com> Cc: Jesper Nilsson <jesper.nilsson@axis.com> Acked-by: Jesper Nilsson <jesper.nilsson@axis.com> Cc: linux-cris-kernel@axis.com Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2015-05-19remove scatterlist.h generation from arch Kbuild filesChristoph Hellwig1-1/+0
Signed-off-by: Christoph Hellwig <hch@lst.de> Reported-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Jens Axboe <axboe@fb.com>
2015-05-19mm/fault, arch: Use pagefault_disable() to check for disabled pagefaults in ↵David Hildenbrand1-3/+3
the handler Introduce faulthandler_disabled() and use it to check for irq context and disabled pagefaults (via pagefault_disable()) in the pagefault handlers. Please note that we keep the in_atomic() checks in place - to detect whether in irq context (in which case preemption is always properly disabled). In contrast, preempt_disable() should never be used to disable pagefaults. With !CONFIG_PREEMPT_COUNT, preempt_disable() doesn't modify the preempt counter, and therefore the result of in_atomic() differs. We validate that condition by using might_fault() checks when calling might_sleep(). Therefore, add a comment to faulthandler_disabled(), describing why this is needed. faulthandler_disabled() and pagefault_disable() are defined in linux/uaccess.h, so let's properly add that include to all relevant files. This patch is based on a patch from Thomas Gleixner. Reviewed-and-tested-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: David.Laight@ACULAB.COM Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: airlied@linux.ie Cc: akpm@linux-foundation.org Cc: benh@kernel.crashing.org Cc: bigeasy@linutronix.de Cc: borntraeger@de.ibm.com Cc: daniel.vetter@intel.com Cc: heiko.carstens@de.ibm.com Cc: herbert@gondor.apana.org.au Cc: hocko@suse.cz Cc: hughd@google.com Cc: mst@redhat.com Cc: paulus@samba.org Cc: ralf@linux-mips.org Cc: schwidefsky@de.ibm.com Cc: yang.shi@windriver.com Link: http://lkml.kernel.org/r/1431359540-32227-7-git-send-email-dahi@linux.vnet.ibm.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-05-05remove <asm/scatterlist.h>Christoph Hellwig2-2/+2
We don't have any arch specific scatterlist now that parisc switched over to the generic one. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@fb.com>
2015-04-26Merge tag 'cris-for-4.1' of ↵Linus Torvalds47-1145/+285
git://git.kernel.org/pub/scm/linux/kernel/git/jesper/cris Pull arch/cris updates from Jesper Nilsson: "Some much needed love for the CRIS-port. There's a bunch of changes this time, giving the CRISv32 port a bit of modern makeover with device-tree, irq domain and gpiolib support, and more switchover to generic frameworks. Some small fixes and removal of the theoretical SMP support brings up the rear" * tag 'cris-for-4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/jesper/cris: cris: fix integer overflow in ELF_ET_DYN_BASE CRISv32: use GENERIC_SCHED_CLOCK CRISv32: use MMIO clocksource CRISv32: use generic clockevents CRIS: use generic headers via Kbuild CRIS: use generic cmpxchg.h CRIS: use generic atomic.h CRIS: use generic atomic bitops CRISv10: remove redundant macros from system.h CRIS: remove SMP code CRISv32: don't enable irqs in INIT_THREAD CRISv32: handle multiple signals CRISv32: prevent bogus restarts on sigreturn CRISv32: don't attempt syscall restart on irq exit Add binding documentation for CRIS CRIS: add Axis 88 board device tree CRISv32: add device tree support CRISv32: add irq domains support CRIS: enable GPIOLIB
2015-04-15Merge branch 'akpm' (patches from Andrew)Linus Torvalds4-150/+140
Merge second patchbomb from Andrew Morton: - the rest of MM - various misc bits - add ability to run /sbin/reboot at reboot time - printk/vsprintf changes - fiddle with seq_printf() return value * akpm: (114 commits) parisc: remove use of seq_printf return value lru_cache: remove use of seq_printf return value tracing: remove use of seq_printf return value cgroup: remove use of seq_printf return value proc: remove use of seq_printf return value s390: remove use of seq_printf return value cris fasttimer: remove use of seq_printf return value cris: remove use of seq_printf return value openrisc: remove use of seq_printf return value ARM: plat-pxa: remove use of seq_printf return value nios2: cpuinfo: remove use of seq_printf return value microblaze: mb: remove use of seq_printf return value ipc: remove use of seq_printf return value rtc: remove use of seq_printf return value power: wakeup: remove use of seq_printf return value x86: mtrr: if: remove use of seq_printf return value linux/bitmap.h: improve BITMAP_{LAST,FIRST}_WORD_MASK MAINTAINERS: CREDITS: remove Stefano Brivio from B43 .mailmap: add Ricardo Ribalda CREDITS: add Ricardo Ribalda Delgado ...
2015-04-15cris fasttimer: remove use of seq_printf return valueJoe Perches2-92/+78
The seq_printf return value, because it's frequently misused, will eventually be converted to void. See: commit 1f33c41c03da ("seq_file: Rename seq_overflow() to seq_has_overflowed() and make public") Miscellanea: o Coalesce formats, realign arguments Signed-off-by: Joe Perches <joe@perches.com> Cc: Mikael Starvik <starvik@axis.com> Cc: Jesper Nilsson <jesper.nilsson@axis.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-15cris: remove use of seq_printf return valueJoe Perches2-58/+62
The seq_printf return value, because it's frequently misused, will eventually be converted to void. See: commit 1f33c41c03da ("seq_file: Rename seq_overflow() to seq_has_overflowed() and make public") Signed-off-by: Joe Perches <joe@perches.com> Acked-by: Jesper Nilsson <jesper.nilsson@axis.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-12arch: Remove exec_domain from remaining archsRichard Weinberger3-6/+0
Signed-off-by: Richard Weinberger <richard@nod.at>
2015-03-25cris: fix integer overflow in ELF_ET_DYN_BASEAndrey Ryabinin1-1/+1
Almost all arches define ELF_ET_DYN_BASE as 2/3 of TASK_SIZE. Though it seems that some architectures do this in a wrong way. The problem is that 2*TASK_SIZE may overflow 32-bits so the real ELF_ET_DYN_BASE becomes wrong. Fix this overflow by dividing TASK_SIZE prior to multiplying: (TASK_SIZE / 3 * 2) Signed-off-by: Andrey Ryabinin <a.ryabinin@samsung.com> Signed-off-by: Jesper Nilsson <jespern@axis.com>
2015-03-25CRISv32: use GENERIC_SCHED_CLOCKRabin Vincent3-0/+12
Provide a fast sched clock using the free-running timer and the generic sched_clock infrastructure. Signed-off-by: Rabin Vincent <rabin@rab.in> Signed-off-by: Jesper Nilsson <jespern@axis.com>
2015-03-25CRISv32: use MMIO clocksourceRabin Vincent2-21/+5
Use a generic MMIO clocksource and get rid of some lines of code. Signed-off-by: Rabin Vincent <rabin@rab.in> Signed-off-by: Jesper Nilsson <jespern@axis.com>
2015-03-25CRISv32: use generic clockeventsRabin Vincent2-60/+86
Implement a oneshot-capable clockevents device so we get support for things like hrtimers and NOHZ. Signed-off-by: Rabin Vincent <rabin@rab.in> Signed-off-by: Jesper Nilsson <jespern@axis.com>
2015-03-25CRIS: use generic headers via KbuildRabin Vincent13-53/+12
Delete headers which do nothing but include the asm-generic versions and use Kbuild magic instead. Signed-off-by: Rabin Vincent <rabin@rab.in> Signed-off-by: Jesper Nilsson <jespern@axis.com>
2015-03-25CRIS: use generic cmpxchg.hRabin Vincent2-51/+1
CRIS can use asm-generic's cmpxchg.h Signed-off-by: Rabin Vincent <rabin@rab.in> Signed-off-by: Jesper Nilsson <jespern@axis.com>
2015-03-25CRIS: use generic atomic.hRabin Vincent4-165/+1
CRIS can use asm-generic's atomic.h. Signed-off-by: Rabin Vincent <rabin@rab.in> Signed-off-by: Jesper Nilsson <jespern@axis.com>
2015-03-25CRIS: use generic atomic bitopsRabin Vincent1-110/+1
The generic atomic bitops are the same as the CRIS-specific ones. Signed-off-by: Rabin Vincent <rabin@rab.in> Signed-off-by: Jesper Nilsson <jespern@axis.com>
2015-03-25CRISv10: remove redundant macros from system.hRabin Vincent1-8/+0
All of these are either unused or already provided by other headers, so they can be removed. Signed-off-by: Rabin Vincent <rabin@rab.in> Signed-off-by: Jesper Nilsson <jespern@axis.com>
2015-03-25CRIS: remove SMP codeRabin Vincent17-638/+1
The CRIS SMP code cannot be built since there is no (and appears to never have been) a CONFIG_SMP Kconfig option in arch/cris/. Remove it. Signed-off-by: Rabin Vincent <rabin@rab.in> Signed-off-by: Jesper Nilsson <jespern@axis.com>
2015-03-25CRISv32: don't enable irqs in INIT_THREADRabin Vincent1-2/+1
INIT_THREAD enables interrupts in the thread_struct's saved flags. This means that interrupts get enabled in the middle of context_switch() while switching to new tasks that get forked off the init task during boot. Don't do this. Fixes the following splat on boot with spinlock debugging on: BUG: spinlock cpu recursion on CPU#0, swapper/2 lock: runqueues+0x0/0x47c, .magic: dead4ead, .owner: swapper/0, .owner_cpu: 0 CPU: 0 PID: 2 Comm: swapper Not tainted 3.19.0-08796-ga747b55 #285 Call Trace: [<c0032b80>] spin_bug+0x2a/0x36 [<c0032c98>] do_raw_spin_lock+0xa2/0x126 [<c01964b0>] _raw_spin_lock+0x20/0x2a [<c00286c8>] scheduler_tick+0x22/0x76 [<c003db2c>] update_process_times+0x5e/0x72 [<c0007a94>] timer_interrupt+0x4e/0x6a [<c00378d6>] handle_irq_event_percpu+0x54/0xf2 [<c00379c4>] handle_irq_event+0x50/0x74 [<c003988e>] handle_simple_irq+0x6c/0xbe [<c0037270>] generic_handle_irq+0x2a/0x36 [<c0004c40>] do_IRQ+0x38/0x84 [<c000662e>] crisv32_do_IRQ+0x54/0x60 [<c0006204>] IRQ0x4b_interrupt+0x34/0x3c [<c0192baa>] __schedule+0x24a/0x532 [<c00056b4>] ret_from_kernel_thread+0x0/0x14 Signed-off-by: Rabin Vincent <rabin@rab.in> Signed-off-by: Jesper Nilsson <jespern@axis.com>
2015-03-25CRISv32: handle multiple signalsRabin Vincent2-32/+26
Al Viro noted that CRIS fails to handle multiple signals. This fixes the problem for CRISv32 by making it use a C work_pending handling loop similar to the ARM implementation in 0a267fa6a15d41c ("ARM: 7472/1: pull all work_pending logics into C function"). This also happens to fixes the warnings which currently trigger on CRISv32 due to do_signal() being called with interrupts disabled. Test case (should die of the SIGSEGV which gets raised when setting up the stack for SIGALRM, but instead reaches and executes the _exit(1)): #include <unistd.h> #include <signal.h> #include <sys/time.h> #include <err.h> static void handler(int sig) { } int main(int argc, char *argv[]) { int ret; struct itimerval t1 = { .it_value = {1} }; stack_t ss = { .ss_sp = NULL, .ss_size = SIGSTKSZ, }; struct sigaction action = { .sa_handler = handler, .sa_flags = SA_ONSTACK, }; ret = sigaltstack(&ss, NULL); if (ret < 0) err(1, "sigaltstack"); sigaction(SIGALRM, &action, NULL); setitimer(ITIMER_REAL, &t1, NULL); pause(); _exit(1); return 0; } Reported-by: Al Viro <viro@ZenIV.linux.org.uk> Link: http://lkml.kernel.org/r/20121208074429.GC4939@ZenIV.linux.org.uk Signed-off-by: Rabin Vincent <rabin@rab.in> Signed-off-by: Jesper Nilsson <jespern@axis.com>
2015-03-25CRISv32: prevent bogus restarts on sigreturnRabin Vincent2-2/+8
Al Viro noted that CRIS is vulnerable to bogus restarts on sigreturn. The fixes CRISv32 by using regs->exs as an additional indicator to whether we should attempt to restart the syscall or not. EXS is only used in the sigtrap handling, and in that path we already have r9 (the other indicator, which indicates if we're in a syscall or not) cleared. Test case, a port of Al's ARM version from 653d48b22166db2d8 ("arm: fix really nasty sigreturn bug"): #include <unistd.h> #include <signal.h> #include <stdlib.h> #include <sys/time.h> #include <errno.h> void f(int n) { register int r10 asm ("r10") = n; __asm__ __volatile__( "ba 1f \n" "nop \n" "break 8 \n" "1: ba . \n" "nop \n" : : "r" (r10) : "memory"); } void handler1(int sig) { } void handler2(int sig) { raise(1); } void handler3(int sig) { exit(0); } int main(int argc, char *argv[]) { struct sigaction s = {.sa_handler = handler2}; struct itimerval t1 = { .it_value = {1} }; struct itimerval t2 = { .it_value = {2} }; signal(1, handler1); sigemptyset(&s.sa_mask); sigaddset(&s.sa_mask, 1); sigaction(SIGALRM, &s, NULL); signal(SIGVTALRM, handler3); setitimer(ITIMER_REAL, &t1, NULL); setitimer(ITIMER_VIRTUAL, &t2, NULL); f(-513); /* -ERESTARTNOINTR */ return 0; } Reported-by: Al Viro <viro@ZenIV.linux.org.uk> Link: http://lkml.kernel.org/r/20121208074429.GC4939@ZenIV.linux.org.uk Signed-off-by: Rabin Vincent <rabin@rab.in> Signed-off-by: Jesper Nilsson <jespern@axis.com>
2015-03-25CRISv32: don't attempt syscall restart on irq exitRabin Vincent1-0/+2
r9 is used to determine whether syscall restarting must be performed or not. Unfortunately, r9 is never set to zero in the non-syscall path, and r9 is on top of that a callee-saved register which can be set to non-zero by the C functions that are called during IRQ handling. This means that if r10 (used for the syscall return value) is one of the -ERESTART* values when a hardware interrupt occurs which leads to a signal being delivered to the process, the kernel will "restart" a syscall which never occurred. This will lead to the PC being moved back by 2 on return to user space. Fix the problem by setting r9 to zero in the interrupt path. Test case (should loop forever but ends up executing the break 8 trap instruction): #include <signal.h> #include <stdlib.h> #include <sys/time.h> void f(int n) { register int r9 asm ("r9") = 1; register int r10 asm ("r10") = n; __asm__ __volatile__( "ba 1f \n" "nop \n" "break 8 \n" "1: ba . \n" "nop \n" : : "r" (r9), "r" (r10) : "memory"); } void handler1(int sig) { } int main(int argc, char *argv[]) { struct itimerval t1 = { .it_value = {1} }; signal(SIGALRM, handler1); setitimer(ITIMER_REAL, &t1, NULL); f(-513); /* -ERESTARTNOINTR */ return 0; } Signed-off-by: Rabin Vincent <rabin@rab.in> Signed-off-by: Jesper Nilsson <jespern@axis.com>
2015-03-25CRIS: add Axis 88 board device treeRabin Vincent2-0/+56
Add a minimal device tree for the ETRAX FS SoC and the Axis 88 developer board. Signed-off-by: Rabin Vincent <rabin@rab.in> Signed-off-by: Jesper Nilsson <jespern@axis.com>
2015-03-25CRISv32: add device tree supportRabin Vincent6-0/+46
Add support for booting CRISv32 with a built-in device tree. Signed-off-by: Rabin Vincent <rabin@rab.in> Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>