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2011-06-14arm: twd: Fix undefined symbol if HOTPLUG_CPU is not configuredScott Williams
Change-Id: I32e2e58d61305366853d73dc30be3934d3e45355 Reviewed-on: http://git-master/r/35941 Reviewed-by: Scott Williams <scwilliams@nvidia.com> Tested-by: Scott Williams <scwilliams@nvidia.com> Reviewed-by: Aleksandr Frid <afrid@nvidia.com> Reviewed-by: Daniel Willemsen <dwillemsen@nvidia.com> Reviewed-by: Diwakar Tundlam <dtundlam@nvidia.com> Tested-by: Diwakar Tundlam <dtundlam@nvidia.com>
2011-05-25ARM: Fix strex() in SWP emulationxxie
Found an application hanging using this SWP emulation on a SMP system. A memory barrier is needed right after the strex() otherwise we have the synchronization issues on SMP. This patch let ldrex()+strex()+memory_barrier() loop continuesly until the strex() is successful, this is same as ARM kernel spinlock implementation and Bionic library's mutex's SWP() routine. Tested the new implementation in a user space program running 100 threads using the SWP based mutex on SMP systems, it did not show any race conditions. Change-Id: Ib5de14ba41a3fdb31510752114990be9ef35e144 Reviewed-on: http://git-master/r/29745 Reviewed-by: Xin Xie <xxie@nvidia.com> Tested-by: Xin Xie <xxie@nvidia.com> Reviewed-by: Scott Williams <scwilliams@nvidia.com> Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>
2011-05-25ARM: apply orignal SWP emulation enable patchXin Xie
Picked from the upstream linux tree: * ARM: 6396/1: Add SWP/SWPB emulation for ARMv7 processors (commit 64d2dc384e41e2b7acead6804593ddaaf8aad8e1) Change-Id: Ia7fca787b68e7fda9b937005f6daaefda89fa56a Reviewed-on: http://git-master/r/29741 Reviewed-by: Niket Sirsi <nsirsi@nvidia.com> Tested-by: Niket Sirsi <nsirsi@nvidia.com>
2011-05-25ARM: mm: domain switch removalXin Xie
This patch has 2 purposes: * Disable CPU prefetching ioremap'ed memory * Keep Copy-On-Write policy for some CPU instructions emulation in kernel space(i.e. SWP) This is the backport of the upstream Linux kernel: * ARM: 6384/1: Remove the domain switching on ARMv6k/v7 CPUs (main kernel commit ID: 247055aa21ffef1c49dd64710d5e94c2aee19b58) Change-Id: Ic467be916282278e104192401b5289d283317f1a Reviewed-on: http://git-master/r/29734 Reviewed-by: Niket Sirsi <nsirsi@nvidia.com> Tested-by: Niket Sirsi <nsirsi@nvidia.com>
2011-05-25Revert "HACK stay compatible with the emulated TLS register HACK"Xin Xie
This reverts commit f00c8f71dae5a16b7fab0e77fc8b32feac9d38a7. We need enable the SWP() emulation which depend on removing domain switching on ARM kernel. Emulated TLS register requires the user space page mapped as R/W in kernel which requires domain swtiching. Remove this patch becasue the ARM V7 has HW TLS register. Change-Id: I8772832333cf53aaf2d5061d3b459576a737fcaa Reviewed-on: http://git-master/r/29733 Reviewed-by: Xin Xie <xxie@nvidia.com> Tested-by: Xin Xie <xxie@nvidia.com> Reviewed-by: Scott Williams <scwilliams@nvidia.com> Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>
2011-04-26ARM: SMP: disable local IRQ and FIQ before restartBo Yan
Disabling IRQ and FIQ before we stop other processor cores and start reboot process will make sure the restart procedure is not preempted. This is to prevent the potential lockup caused by the loss of synchronisation among different processor cores due to IPI_STOP. Original-Change-Id: Ib3d6089b1f7569382586c96251b587b9ffddf159 Reviewed-on: http://git-master/r/27780 Reviewed-by: Varun Colbert <vcolbert@nvidia.com> Tested-by: Varun Colbert <vcolbert@nvidia.com> Change-Id: I9737211308c9d6e1e177494ff6ba3177e8ac010d
2011-04-26ARM: Disallow DCC writes from secondary processorsScott Williams
An attempt to access the DCC console from secondary processors will result in those processors hanging because the JTAG debugger can only communicate with one core at a time. Allow DCC output only from CPU 0. Useful for bringup, not necessarily for upstream Original-Change-Id: I9118555438f5b72b16a2dfccd5b6f98860505d6d Reviewed-on: http://git-master/r/13876 Reviewed-by: Scott Williams <scwilliams@nvidia.com> Tested-by: Scott Williams <scwilliams@nvidia.com> Change-Id: I36bb0351e0899f4ad8732fe784623f7eea57dff5
2011-04-20ARM: fix /proc/$PID/stack on SMPDeepesh Gujarathi
Rabin Vincent reports: | On SMP, this BUG() in save_stack_trace_tsk() can be easily triggered | from user space by reading /proc/$PID/stack, where $PID is any pid but | the current process: | | if (tsk != current) { | #ifdef CONFIG_SMP | /* | * What guarantees do we have here that 'tsk' | * is not running on another CPU? | */ | BUG(); | #else Fix this by replacing the BUG() with an entry to terminate the stack trace, returning an empty trace - I'd rather not expose the dwarf unwinder to a volatile stack of a running thread. Change-Id: Ide38bb5eeff09c1d1189bc1a30667a2cc6b96ba2 Reported-by: Rabin Vincent <rabin@rab.in> Tested-by: Rabin Vincent <rabin@rab.in> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Reviewed-on: http://git-master/r/28325 Reviewed-by: Varun Colbert <vcolbert@nvidia.com> Tested-by: Varun Colbert <vcolbert@nvidia.com>
2011-04-14ARM: SMP: ensure smp_send_stop() waits for CPUs to stopDonghan Ryu
Wait for CPUs to indicate that they've stopped, after sending the stop IPI, rather than blindly continuing on and hoping that they've stopped in time. Print a warning if we fail to stop the other CPUs. Bug 810939 (cherry picked from commit 28e18293cf0f8d23a0950d7b1d2212d11af494dc) Change-Id: I87fbaad50a50789dc9a12b1f27d51372ffd6aaf1 Reviewed-on: http://git-master/r/27828 Reviewed-by: Varun Colbert <vcolbert@nvidia.com> Tested-by: Varun Colbert <vcolbert@nvidia.com>
2011-03-22ARM: SMP: remove per_cpu based spinlock in do_IPI()Xin Xie
The spinlock used in the do_IPI function is declared in per_cpu section, and it does not have the cache snooping which can cause the spinlock failure. This fix is based on the main kernel tree: - ARM: SMP: avoid using bitmasks and locks for IPIs, use hardware instead commit 24480d980e9063b3ebd0dfdf2f396c305956c356 - ARM: SMP: remove IRQ-disabling for smp_cross_call() commit 0df7095205cbf6ea1cdfe6254e0d6a3b823caa3b BUG 798775 Change-Id: I6e03027cb3f586803a260e216c71fc2fd74d09f2 Reviewed-on: http://git-master/r/23779 Reviewed-by: Xin Xie <xxie@nvidia.com> Tested-by: Xin Xie <xxie@nvidia.com> Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>
2011-02-02Merge branch 'android-2.6.36' into android-tegra-2.6.36Colin Cross
2011-02-02ARM: vfp: Move exception address fixup into vfphw.SColin Cross
If the PC on the stack is updated in entry-armv.S, do_undefinstr can get called after the fixup. do_undefinstr does its own fixup, and doing both causes the PC to point to half way through an instruction. Instead, do the fixup in do_vfp, where only the vfp code can get called. Change-Id: I6d966887adc8ed58d88bfe0cb3c0ba29213be488 Signed-off-by: Colin Cross <ccross@android.com>
2011-01-14Merge branch 'android-2.6.36' into android-tegra-2.6.36Colin Cross
2011-01-14ARM: Fix up vfp exception location in thumb modeColin Cross
The exception handler in entry-armv.S checks for thumb mode and correctly determines the exception location and instruction, but VFP_bounce uses the uncorrected location off the stack. If the VFP exception occured in Thumb mode, fix up the exception location on the stack to match the value that would be returned in ARM mode. Fixes segfaults in userspace applications running in Thumb mode caused by a handled VFP exception returning to the middle of the instruction that triggered the exception. Change-Id: I02be4c5b546561d9a967a02c1e9eb1de876cff07 Original-author: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Colin Cross <ccross@android.com>
2011-01-06Merge branch 'android-2.6.36' into android-tegra-2.6.36Colin Cross
2011-01-04Merge branch linux-tegra-2.6.36 into android-tegra-2.6.36Erik Gilling
Change-Id: Iec42f1fa234c03c6267f91ba0553d1c651b9ba94
2011-01-04ARM: smp_twd: Use cpufreq notifiers to update prescalersColin Cross
Change-Id: I957d5ca8580d4e7a98fb9fc754ca8f00133940d9 Signed-off-by: Colin Cross <ccross@android.com>
2011-01-04ARM: smp_twd: Avoid recalibrating local timerColin Cross
Change-Id: I10af3139ecd0dc1ef54e7a8e5258ee6fb29bfb0c Signed-off-by: Colin Cross <ccross@android.com>
2010-12-22ARM: Stop irqsoff trace on return to userTodd Poynor
If the irqsoff tracer is in use, stop tracing the interrupt disable interval when returning to userspace. Tracing userspace execution time as interrupts disabled time is not helpful for kernel performance analysis purposes. Only do so if the irqsoff tracer is enabled, to avoid overhead purely for lockdep, which doesn't care. Change-Id: I74cde7dd0c4c3a783af34e76bd4efc1f85315abe Signed-off-by: Todd Poynor <toddpoynor@google.com>
2010-12-21Merge branch 'linux-tegra-2.6.36' into android-tegra-2.6.36Colin Cross
Conflicts: drivers/usb/gadget/composite.c Change-Id: I1a332ec21da62aea98912df9a01cf0282ed50ee1
2010-12-21Merge commit 'v2.6.36.2' into linux-tegra-2.6.36Colin Cross
2010-11-22kgdb,arm: fix register dumpRabin Vincent
commit 834b2964b7ab047610da038e42d61dc8dac6339a upstream. DBG_MAX_REG_NUM incorrectly had the number of indices in the GDB regs array rather than the number of registers, leading to an oops when the "rd" command is used in KDB. Signed-off-by: Rabin Vincent <rabin@rab.in> Signed-off-by: Jason Wessel <jason.wessel@windriver.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-10-21Merge commit 'v2.6.36' into android-2.6.36Dima Zavin
2010-10-15Merge branch 'linux-tegra-2.6.36' into android-tegra-2.6.36Colin Cross
2010-10-15Merge commit 'v2.6.36-rc8' into linux-tegra-2.6.36Colin Cross
2010-10-06Merge branch 'android-2.6.36' into android-tegra-2.6.36Colin Cross
Conflicts: drivers/input/touchscreen/Kconfig Change-Id: Ifc75266e258f9513d78c47c12e2f1de1d2344f02
2010-10-06[ARM] twd: Always calibrate local timerColin Cross
Change-Id: I075f883739d0eeea3b6b10da003119431cf3c2d2 Signed-off-by: Colin Cross <ccross@android.com>
2010-10-06[ARM] twd: Fix updating control register in set_modeColin Cross
Change-Id: I5096cc3fedf51024c332adbb846689e01e1f7ce0 Signed-off-by: Colin Cross <ccross@android.com>
2010-10-06[ARM] twd: Fix prescaler getting cleared by set_modeColin Cross
Change-Id: I98d4b02feeb9784591504c59a82058a58bbd038e Signed-off-by: Colin Cross <ccross@android.com>
2010-10-06[ARM] twd: Allow twd rescaling to match cpu frequencyColin Cross
The clock to the ARM TWD local timer scales with the cpu frequency. To allow the cpu frequency to change while maintaining a constant TWD frequency, pick a lower target frequency for the TWD and use the prescaler to divide down to the closest lower frequency. This patch provides a new initialization function that takes a target TWD frequency and the relation between the cpu clock and the TWD clock, required to be an integer divider >= 2 by the ARM spec. It also provides a function to be called from cpufreq drivers to set the prescaler whenever the cpu frequency changes. Also fixes a typo in the printk of the calibrated frequency. Change-Id: I3fa8ef718ff5518170f1b2bab29efe960741853e Signed-off-by: Colin Cross <ccross@google.com>
2010-10-04ARM: 6412/1: kprobes-decode: add support for MOVW instructionWill Deacon
The MOVW instruction moves a 16-bit immediate into the bottom halfword of the destination register. This patch ensures that kprobes leaves the 16-bit immediate intact, rather than assume a 12-bit immediate and mask out the upper 4 bits. Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-10-03ARM: enable CONFIG_CPU_IDLE supportGary King
add ARCH_HAS_CPU_IDLE_WAIT and ARCH_HAS_DEFAULT_IDLE configuration, and expose default_idle and cpu_idle_wait cpu_idle_wait implementation based on the implementation in the x86 tree Signed-off-by: Gary King <gking@nvidia.com>
2010-09-29[ARM] Do not call flush_cache_user_range with mmap_sem heldDima Zavin
We can't be holding the mmap_sem while calling flush_cache_user_range because the flush can fault. If we fault on a user address, the page fault handler will try to take mmap_sem again. Since both places acquire the read lock, most of the time it succeeds. However, if another thread tries to acquire the write lock on the mmap_sem (e.g. mmap) in between the call to flush_cache_user_range and the fault, the down_read in do_page_fault will deadlock. Also, since we really can't be holding the mmap_sem while calling flush_cache_user_range AND vma is actually unused by the flush itself, get rid of vma as an argument. Change-Id: If55409bde41ad1060fa4fe7cbd4ac530d4d9a106 Signed-off-by: Dima Zavin <dima@android.com>
2010-09-29HACK stay compatible with the emulated TLS register HACKBrian Swetland
Change-Id: I06453a7ce78a3d201f3cd5145d3000b0d9ba11fe
2010-09-29[ARM] process: Add display of memory around registers when displaying regs.San Mehat
This is extremely useful in diagnosing remote crashes, and is based heavily on original work by <md@google.com>. Signed-off-by: San Mehat <san@google.com> Cc: Michael Davidson <md@google.com> [ARM] process: Use uber-safe probe_kernel_address() to read mem when dumping. This prevents the dump from taking pagefaults / external aborts. Signed-off-by: San Mehat <san@google.com>
2010-09-29[ARM] Allow ICEDCC to work with CPU_V7 as well as CPU_V6.Brian Swetland
The mechanism is the same -- just need to adjust some ifdefs. Signed-off-by: Brian Swetland <swetland@google.com>
2010-09-29[ARM] Add code to prevent system calls from being restarted muliple times ↵Arve Hjønnevåg
before returning from the kernel. Fixes crashes with thumb syscalls.
2010-09-27Merge master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds
* master.kernel.org:/home/rmk/linux-2.6-arm: (28 commits) ARM: 6411/1: vexpress: set RAM latencies to 1 cycle for PL310 on ct-ca9x4 tile ARM: 6409/1: davinci: map sram using MT_MEMORY_NONCACHED instead of MT_DEVICE ARM: 6408/1: omap: Map only available sram memory ARM: 6407/1: mmu: Setup MT_MEMORY and MT_MEMORY_NONCACHED L1 entries ARM: pxa: remove pr_<level> uses of KERN_<level> ARM: pxa168fb: clear enable bit when not active ARM: pxa: fix cpu_is_pxa*() not expanding to zero when not configured ARM: pxa168: fix corrected reset vector ARM: pxa: Use PIO for PI2C communication on Palm27x ARM: pxa: Fix Vpac270 gpio_power for MMC ARM: 6401/1: plug a race in the alignment trap handler ARM: 6406/1: at91sam9g45: fix i2c bus speed leds: leds-ns2: fix locking ARM: dove: fix __io() definition to use bus based offset dmaengine: fix interrupt clearing for mv_xor ARM: kirkwood: Unbreak PCIe I/O port ARM: Fix build error when using KCONFIG_CONFIG ARM: 6383/1: Implement phys_mem_access_prot() to avoid attributes aliasing ARM: 6400/1: at91: fix arch_gettimeoffset fallout ARM: 6398/1: add proc info for ARM11MPCore/Cortex-A9 from ARM ...
2010-09-17arm: fix really nasty sigreturn bugAl Viro
If a signal hits us outside of a syscall and another gets delivered when we are in sigreturn (e.g. because it had been in sa_mask for the first one and got sent to us while we'd been in the first handler), we have a chance of returning from the second handler to location one insn prior to where we ought to return. If r0 happens to contain -513 (-ERESTARTNOINTR), sigreturn will get confused into doing restart syscall song and dance. Incredible joy to debug, since it manifests as random, infrequent and very hard to reproduce double execution of instructions in userland code... The fix is simple - mark it "don't bother with restarts" in wrapper, i.e. set r8 to 0 in sys_sigreturn and sys_rt_sigreturn wrappers, suppressing the syscall restart handling on return from these guys. They can't legitimately return a restart-worthy error anyway. Testcase: #include <unistd.h> #include <signal.h> #include <stdlib.h> #include <sys/time.h> #include <errno.h> void f(int n) { __asm__ __volatile__( "ldr r0, [%0]\n" "b 1f\n" "b 2f\n" "1:b .\n" "2:\n" : : "r"(&n)); } void handler1(int sig) { } void handler2(int sig) { raise(1); } void handler3(int sig) { exit(0); } main() { 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 */ write(1, "buggered\n", 9); return 1; } Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Cc: stable@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-09-17ARM: prevent multiple syscall restartsRussell King
Al Viro reports that calling "sys_sigsuspend(-ERESTARTNOHAND, 0, 0)" with two signals coming and being handled in kernel space results in the syscall restart being done twice. Avoid this by clearing the 'why' flag when we call the signal handling code to prevent further syscall restarts after the first. Acked-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-09-02ARM: 6352/1: perf: fix event validationWill Deacon
The validate_event function in the ARM perf events backend has the following problems: 1.) Events that are disabled count towards the cost. 2.) Events associated with other PMUs [for example, software events or breakpoints] do not count towards the cost, but do fail validation, causing the group to fail. This patch changes validate_event so that it ignores events in the PERF_EVENT_STATE_OFF state or that are scheduled for other PMUs. Reported-by: Pawel Moll <pawel.moll@arm.com> Acked-by: Jamie Iles <jamie.iles@picochip.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-09-01ARM: 6343/1: wire up fanotify and prlimit64 syscalls on ARMMikael Pettersson
The 2.6.36-rc kernel added three new system calls: fanotify_init, fanotify_mark, and prlimit64. This patch wires them up on ARM. The only non-trivial issue here is the u64 argument to sys_fanotify_mark(), but it is the 3rd argument and thus passed in r2/r3 in both kernel and user space, so it causes no problems. Tested with a 2.6.36-rc2 EABI kernel on an ixp4xx machine. Tested-by: Anand Gadiyar <gadiyar@ti.com> Signed-off-by: Mikael Pettersson <mikpe@it.uu.se> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-09-01ARM: 6330/1: perf: reword comments relating to perf_event_do_pendingWill Deacon
This is purely a cosmetic change to the ARM perf backend because the current comments about the relationship between NMIs, interrupt context and perf_event_do_pending are misleading. This patch updates the comments so that they reflect what the code actually does (which is in line with other architectures). Acked-by: Jamie Iles <jamie.iles@picochip.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-08-28Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: pxa27x_keypad - remove input_free_device() in pxa27x_keypad_remove() Input: mousedev - fix regression of inverting axes Input: uinput - add devname alias to allow module on-demand load Input: hil_kbd - fix compile error USB: drop tty argument from usb_serial_handle_sysrq_char() Input: sysrq - drop tty argument form handle_sysrq() Input: sysrq - drop tty argument from sysrq ops handlers
2010-08-19Input: sysrq - drop tty argument from sysrq ops handlersDmitry Torokhov
Noone is using tty argument so let's get rid of it. Acked-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Acked-by: Jason Wessel <jason.wessel@windriver.com> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2010-08-17Merge master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds
* master.kernel.org:/home/rmk/linux-2.6-arm: VIDEO: amba clcd: don't disable an already disabled clock ARM: Tighten check for allowable CPSR values ARM: 6329/1: wire up sys_accept4() on ARM ARM: 6328/1: Build with -fno-dwarf2-cfi-asm ARM: 6326/1: kgdb: fix GDB_MAX_REGS no longer used
2010-08-17Make do_execve() take a const filename pointerDavid Howells
Make do_execve() take a const filename pointer so that kernel_execve() compiles correctly on ARM: arch/arm/kernel/sys_arm.c:88: warning: passing argument 1 of 'do_execve' discards qualifiers from pointer target type This also requires the argv and envp arguments to be consted twice, once for the pointer array and once for the strings the array points to. This is because do_execve() passes a pointer to the filename (now const) to copy_strings_kernel(). A simpler alternative would be to cast the filename pointer in do_execve() when it's passed to copy_strings_kernel(). do_execve() may not change any of the strings it is passed as part of the argv or envp lists as they are some of them in .rodata, so marking these strings as const should be fine. Further kernel_execve() and sys_execve() need to be changed to match. This has been test built on x86_64, frv, arm and mips. Signed-off-by: David Howells <dhowells@redhat.com> Tested-by: Ralf Baechle <ralf@linux-mips.org> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-15ARM: 6329/1: wire up sys_accept4() on ARMMikael Pettersson
sys_accept4() was added in kernel 2.6.28, but ARM was not updated to include it. The number and types of parameters is such that no ARM-specific processing is needed, so wiring up sys_accept4() just requires defining __NR_accept4 and adding a direct call in the syscall entry table. Tested with an EABI 2.6.35 kernel and Ulrich Drepper's original accept4() test program, modified to define __NR_accept4 for ARM. Using the updated unistd.h also eliminates a warning then building glibc (2.10.2 and newer) about accept4() being unimplemented. Signed-off-by: Mikael Pettersson <mikpe@it.uu.se> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-08-14ARM: 6326/1: kgdb: fix GDB_MAX_REGS no longer usederic miao
According to commit 22eeef4bb2a7fd225089c0044060ed1fbf091958 kgdb,arm: Individual register get/set for arm It's now replaced by DBG_MAX_REG_NUM. Cc: Jason Wessel <jason.wessel@windriver.com> Signed-off-by: Eric Miao <eric.y.miao@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-08-13Mark arguments to certain syscalls as being constDavid Howells
Mark arguments to certain system calls as being const where they should be but aren't. The list includes: (*) The filename arguments of various stat syscalls, execve(), various utimes syscalls and some mount syscalls. (*) The filename arguments of some syscall helpers relating to the above. (*) The buffer argument of various write syscalls. Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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