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2006-03-25[PATCH] sys_alarm() unsigned signed conversion fixupThomas Gleixner
alarm() calls the kernel with an unsigend int timeout in seconds. The value is stored in the tv_sec field of a struct timeval to setup the itimer. The tv_sec field of struct timeval is of type long, which causes the tv_sec value to be negative on 32 bit machines if seconds > INT_MAX. Before the hrtimer merge (pre 2.6.16) such a negative value was converted to the maximum jiffies timeout by the timeval_to_jiffies conversion. It's not clear whether this was intended or just happened to be done by the timeval_to_jiffies code. hrtimers expect a timeval in canonical form and treat a negative timeout as already expired. This breaks the legitimate usage of alarm() with a timeout value > INT_MAX seconds. For 32 bit machines it is therefor necessary to limit the internal seconds value to avoid API breakage. Instead of doing this in all implementations of sys_alarm the duplicated sys_alarm code is moved into a common function in itimer.c Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-23[PATCH] more for_each_cpu() conversionsAndrew Morton
When we stop allocating percpu memory for not-possible CPUs we must not touch the percpu data for not-possible CPUs at all. The correct way of doing this is to test cpu_possible() or to use for_each_cpu(). This patch is a kernel-wide sweep of all instances of NR_CPUS. I found very few instances of this bug, if any. But the patch converts lots of open-coded test to use the preferred helper macros. Cc: Mikael Starvik <starvik@axis.com> Cc: David Howells <dhowells@redhat.com> Acked-by: Kyle McMartin <kyle@parisc-linux.org> Cc: Anton Blanchard <anton@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: William Lee Irwin III <wli@holomorphy.com> Cc: Andi Kleen <ak@muc.de> Cc: Christian Zankel <chris@zankel.net> Cc: Philippe Elie <phil.el@wanadoo.fr> Cc: Nathan Scott <nathans@sgi.com> Cc: Jens Axboe <axboe@suse.de> Cc: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-21[MIPS] Separate CPU entries in /proc/cpuinfo with a blank line.Martin Michlmayr
Put in a blank line between CPU entries in /proc/cpuinfo, just like most other architectures (i386, ia64, x86_64) do. Signed-off-by: Martin Michlmayr <tbm@cyrius.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org> ---
2006-03-21[MIPS] sys_mmap2 offset argument should always be shifted 12, not PAGE_SHIFT.H. Peter Anvin
This patch adjusts the offset argument passed into sys_mmap2 to be always shifted 12, even when the native page size isn't 4K. This is what all existing userspace libraries expect. Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org> ---
2006-03-21[MIPS] War on whitespace: cleanup initial spaces followed by tabs.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-03-21[MIPS] Remove CONFIG_BUILD_ELF64.Ralf Baechle
This option is no longer usable with supported compilers. It will be replaced by usage of -msym32 in a separate patch. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-03-21[MIPS] Further sparsification for 32-bit compat code.Atsushi Nemoto
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-03-21[MIPS] fix wrong __user usage in _sysn32_rt_sigsuspendAtsushi Nemoto
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-03-21[MIPS] Signal cleanupAtsushi Nemoto
Move function prototypes to asm/signal.h to detect trivial errors and add some __user tags to get rid of sparse warnings. Generated code should not be changed. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-03-21[MIPS] Reformat all of signal32.c with tabs instead of space for consistencyMartin Michlmayr
Signed-off-by: Martin Michlmayr <tbm@cyrius.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-03-21[MIPS] Delete unused sys32_waitpid.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-03-18[MIPS] Protect more of timer_interrupt() by xtime_lock.Ralf Baechle
From Dave Johnson <djohnson+linuxmips@sw.starentnetworks.com>: * do_timer() expects the arch-specific handler to take the lock as it modifies jiffies[_64] and xtime. * writing timerhi/lo in timer_interrupt() will mess up fixed_rate_gettimeoffset() which reads timerhi/lo. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-03-14Input: pcspkr - separate device and driver registrationMichael Neuling
The current pcspkr code combines the device and driver registration. This patch splits these, putting the device registration in the arch specific code. PowerPC and MIPS only have the pcspkr present sometimes. Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2006-03-09[MIPS] Momentum: Resurrect after things were moved around a while ago.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-03-09[MIPS] Discard .exit.text at runtime.Ralf Baechle
At times gcc will place bits of __exit functions into .rodata. If compiled into the kernle itself we used to discard .exit.text - but not the bits left in .rodata. While harmless this did at times result in a large number of warnings. So until gcc fixes this, discard .exit.text at runtime. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-03-01[MIPS] Use USECS_PER_SEC / HZ instead of tick_usec in do_gettimeofday.Atsushi Nemoto
The 'tick_usec' is USER_HZ period in usec. do_gettimeofday() should use kernel HZ value. Here is a patch for MIPS. It seems m32r, m68k and sparc have same problem though their HZ and USER_HZ are same for now. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-27[MIPS] Use generic compat routines for readdir, getdentsAtsushi Nemoto
Not just cleanup but also fixes O32 readdir(2) emulation. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-27[MIPS] SMP: Fix initialization order bug.Ralf Baechle
A recent change requires cpu_possible_map to be initialized before smp_sched_init() but most MIPS platforms were initializing their processors in the prom_prepare_cpus callback of smp_prepare_cpus. The simple fix of calling prom_prepare_cpus from one of the earlier SMP initialization hooks doesn't work well either since IPIs may require init_IRQ() to have completed, so bit the bullet and split prom_prepare_cpus into two initialization functions, plat_smp_setup which is called early from setup_arch and plat_prepare_cpus called where prom_prepare_cpus used to be called. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-24[PATCH] flags parameter for linkatUlrich Drepper
I'm currently at the POSIX meeting and one thing covered was the incompatibility of Linux's link() with the POSIX definition. The name. Linux does not follow symlinks, POSIX requires it does. Even if somebody thinks this is a good default behavior we cannot change this because it would break the ABI. But the fact remains that some application might want this behavior. We have one chance to help implementing this without breaking the behavior. For this we could use the new linkat interface which would need a new flags parameter. If the new parameter is AT_SYMLINK_FOLLOW the new behavior could be invoked. I do not want to introduce such a patch now. But we could add the parameter now, just don't use it. The patch below would do this. Can we get this late patch applied before the release more or less fixes the syscall API? Signed-off-by: Ulrich Drepper <drepper@redhat.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-02-21[MIPS] jiffies_to_compat_timeval fixAtsushi Nemoto
The last argument of div_long_long_rem() must be long. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-21[MIPS] Add topology_init.Rojhalat Ibrahim
A recent patch introduced cpu topology in sysfs. When you run a kernel with SMP and sysfs enabled, you now get an Oops on boot. The following patch fixes that by adding topology_init to arch/mips/kernel/smp.c. The code is copied from arch/s390/kernel/smp.c. Signed-off-by: Rojhalat Ibrahim <imr@rtschenk.de> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-21[MIPS] N32: Make sure pointer is good before passing it to sys_waitid().Ralf Baechle
After all we're calling sys_waitid() with fs set to KERNEL_DS ... Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-21[MIPS] N32: Fix N32 rt_sigtimedwait and rt_sigsuspend breakage.Ralf Baechle
Originally found through an oops in the Gentoo N32 userland build; patch based on original patch by Daniel Jacobwitz. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-21[MIPS] Reformat _sys32_rt_sigsuspend with tabs instead of space for consistency.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-21[MIPS] Make do_signal32 return void.Martin Michlmayr
do_signal has been changed to return void since the "return value is ignored everywhere". Convert do_signal32 accordingly. Signed-off-by: Martin Michlmayr <tbm@cyrius.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-21[MIPS] Add support for TIF_RESTORE_SIGMASK for signal32Martin Michlmayr
Following the recent implementation of TIF_RESTORE_SIGMASK in arch/mips/kernel/signal.c, 64-bit kernels with 32-bit user-land compatibility oops when starting init. signal32.c needs to be converted to use TIF_RESTORE_SIGMASK too. Signed-off-by: Martin Michlmayr <tbm@cyrius.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-21[MIPS] Make integer overflow exceptions in kernel mode fatal.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-14[MIPS] Fix typo in _sys32_rt_sigreturn and _sysn32_rt_sigreturn.Atsushi Nemoto
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-14[MIPS] RM9000: Fix buggy I-cache workaround.Thomas Koeller
Signed-off-by: Thomas Koeller <thomas.koeller@baslerweb.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-14[MIPS] MT: Propagate config7 into VPE.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-14[MIPS] MT: Fix c0 back-to-back hazard.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-14[MIPS] Rewrite get_wchan and its helper functions using kallsyms_lookup.Atsushi Nemoto
Implement get_wchan() and frame_info_init() using kallsyms_lookup(). This fixes problem with static sched/lock functions and mfinfo[] maintenance issue. If CONFIG_KALLSYMS was disabled, get_wchan() just returns thread_saved_pc() value. Also unwind stackframe based on "addiu sp,-imm" analysis instead of frame pointer. This fixes problem with functions compiled without -fomit-frame-pointer. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-14[MIPS] Remove commented out function prom_build_cpu_map.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-13[PATCH] MIPS 32bit machines need fstatat64 support.Yoichi Yuasa
As noted by Jan Dittmer <jdi@l4x.org> Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-02-08[MIPS] Sparse: Add __user tags to syscall.cAtsushi Nemoto
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org> ---
2006-02-08[MIPS] Wire up new syscalls.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org> ---
2006-02-08[MIPS] Make do_signal return void.Ralf Baechle
It's return value is ignored everywhere. Signed-off-by: Ralf Baechle <ralf@linux-mips.org> ---
2006-02-08[MIPS] Add support for TIF_RESTORE_SIGMASK.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org> ---
2006-02-07[MIPS] Clear ST0_RE on bootup.Ralf Baechle
The reset state is undefined and some firmware doesn't clear this bit possibly resulting in crashes on entry into userland. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-07[MIPS] Fix linker script to work for non-4K page size.Ralf Baechle
Very much to my surprise Fuxin Zhang reports this is all it takes to get the kernel to work for page sizes larger than 4kB. This also paves the way for support for the R6000 and R8000 which don't support 4kB page size. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-07[MIPS] Fix minor sparse warningsAtsushi Nemoto
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-07[MIPS] Sparse: Add some __user tags to signal functions.Atsushi Nemoto
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-07[MIPS] Sparse: Fix some compiler/sparse warnings in ptrace32.cAtsushi Nemoto
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-07[MIPS] Get rid of CONFIG_SB1_PASS_1_WORKAROUNDS #ifdef crapola.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-07[MIPS] Rename _machine_power_off to pm_power_off so the kernel builds again.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-07[MIPS] Check function pointers are non-zero before calling.Ralf Baechle
Several boards don't initialize the pointers, so let's play safe. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-07[MIPS] Revert "mips: add pm_power_off"Ralf Baechle
pm_power_off duplicates the functionality of _machine_restart. This reverts b142159fa5ffbad73b6927fafa5440148030f3f1 commit.
2006-02-07[MIPS] RTLX compile fixes.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-07[MIPS] Remove stray .set mips3 resulting in 64-bit instruction in 32-bit ↵Ralf Baechle
kernels. Only the NMI handler was affected so this is a low impact bug. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-01[PATCH] mips: gdb-stub.c: fix parse error before ; tokenAlexey Dobriyan
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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