- Jun 20, 2006
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Ralf Baechle authored
IP27 configuration isn't the only NUMA system - it just happens to be the currently only supported MIPS NUMA system. So move the necessary options back into the main MIPS Kconfig file. Signed-off-by:Ralf Baechle <ralf@linux-mips.org>
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Ralf Baechle authored
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Ralf Baechle authored
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Ralf Baechle authored
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Ralf Baechle authored
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Ralf Baechle authored
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Ralf Baechle authored
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Ralf Baechle authored
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Ralf Baechle authored
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Yoichi Yuasa authored
Signed-off-by:
Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp> Signed-off-by:
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Sergei Shtylyov authored
Mark au1xxx_timer_setup() __init, just because it is. Get rid of unneeded extern's (note that (*do_gettimeoffset)() is already declared by <asm/time.c>) and an unused variable. Kill some whitespace... Signed-off-by:
Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by:
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Ralf Baechle authored
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Thiemo Seufer authored
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Thiemo Seufer <ths@networkno.de> Signed-off-by:
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Atsushi Nemoto authored
The struct mips_fpu_soft_struct and mips_fpu_hard_struct are completely same now and the kernel fpu emulator assumes that. This patch unifies them to mips_fpu_struct and get rid of mips_fpu_union. Signed-off-by:
Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by:
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Ralf Baechle authored
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Mark.Zhan authored
Support for the GT-64120-based Wind River 4KC PPMC Evaluation board. Signed-off-by:Rongkai.Zhan <Rongkai.zhan@windriver.com> Signed-off-by:
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Herbert Valerio Riedel authored
Convert sizeof/sizeof use to use of ARRAY_SIZE macro, and annotate irqmap structures as __initdata. Signed-off-by:
Herbert Valerio Riedel <hvr@gnu.org> Signed-off-by:
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Ralf Baechle authored
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Atsushi Nemoto authored
I found that NPTL's pthread_cond_signal() does not work properly on kernels compiled by gcc 4.1.x. I suppose inline asm for __futex_atomic_op() was wrong. I suppose: 1. "=&r" constraint should be used for oldval. 2. Instead of "r" (uaddr), "=R" (*uaddr) for output and "R" (*uaddr) for input should be used. 3. "memory" should be added to the clobber list. Signed-off-by:
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[MIPS] James E Wilson authored
Running a UP kernel on a bcm1480 board, I get nonsensical timing results, like this: release@unknown:~/tmp$ time ./a.out real 0m22.906s user 0m45.792s sys 0m0.010s According to my watch, this program took 23 seconds to run, so the real time clock is OK. It is process accounting that is broken. I tracked this down to a problem with the function bcm1480_timer_interrupt in the file sibyte/bcm1480/time.c. This function calls ll_timer_interrupt for cpu0, and ll_local_timer_interrupt for all cpus. However, both of these functions do process accounting. Thus processes running on cpu0 end up with doubled times. This is very obvious in a UP kernel where all processes run on cpu0. The correct way to do this is to only call ll_local_timer interrupt if this is not cpu0. This can be seen in the mips-board/generic/time.c file, and also in the sibyte/sb1250/time.c file, both of which handle this correctly. I fixed the bcm1480/time.c file by copying over the correct code from the sb1250/time.c file. With this fix, I now get sensible results. release@unknown:~/tmp$ time ./a.out real 0m22.903s user 0m22.894s sys 0m0.006s Signed-off-by: -
Ralf Baechle authored
Broken in too many way for me to fix it for 2.6.17. Signed-off-by: -
Ralf Baechle authored
It took a while longer than on other architectures but gcc has finally started to strike us as well ... This also fixes the damage by 6edfba1b . Signed-off-by: -
Ralf Baechle authored
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Yoichi Yuasa authored
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Atsushi Nemoto authored
> Without this fix, _save_fp() in 64-bit kernel is seriously broken. > > ffffffff8010bec0 <_save_fp>: > ffffffff8010bec0: 400d6000 mfc0 t1,c0_status > ffffffff8010bec4: 000c7140 sll t2,t0,0x5 > ffffffff8010bec8: 05c10011 bgez t2,ffffffff8010bf10 <_save_fp+0x50> > ffffffff8010becc: 00000000 nop > ffffffff8010bed0: f4810328 sdc1 $f1,808(a0) > ... Fix register usage in fpu_save_double() and make fpu_restore_double() more symmetric with fpu_save_double(). Signed-off-by:
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Elizabeth Oldham authored
The SOC-it system controller running in big endian mode might forget byteswapping when DMAing to the last word of physical memory. Fixed by ignoring the last page of memory. Signed-off-by:
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- Jun 18, 2006
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Linus Torvalds authored
Being named "Crazed Snow-Weasel" instills a lot of confidence in this release, so I'm sure this will be one of the better ones.
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Arnd Bergmann authored
Reflect the fact that the Cell Broadband Engine supports 64k pages by adding the bit to the CPU features. Signed-off-by:
Arnd Bergmann <arnd.bergmann@de.ibm.com> Signed-off-by:
Linus Torvalds <torvalds@osdl.org>
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Arnd Bergmann authored
The page size encoding passed to tlbie is incorrect for new-style large pages. This fixes it. This doesn't affect anything on older machines because mmu_psize_defs[psize].penc (the page size encoding) is 0 for 4k and 16M pages (the two are distinguished by a separate "is a large page" bit). Signed-off-by:
Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by:
Paul Mackerras <paulus@samba.org> Signed-off-by:
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Oleg Nesterov authored
arm_timer() checks PF_EXITING to prevent BUG_ON(->exit_state) in run_posix_cpu_timers(). However, for some reason it does so only for CPUCLOCK_PERTHREAD case (which is imho wrong). Also, this check is not reliable, PF_EXITING could be set on another cpu without any locks/barriers just after the check, so it can't prevent from attaching the timer to the exiting task. The previous patch makes this check unneeded. Signed-off-by:
Oleg Nesterov <oleg@tv-sign.ru> Signed-off-by:
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Oleg Nesterov authored
do_exit() clears ->it_##clock##_expires, but nothing prevents another cpu to attach the timer to exiting process after that. arm_timer() tries to protect against this race, but the check is racy. After exit_notify() does 'write_unlock_irq(&tasklist_lock)' and before do_exit() calls 'schedule() local timer interrupt can find tsk->exit_state != 0. If that state was EXIT_DEAD (or another cpu does sys_wait4) interrupted task has ->signal == NULL. At this moment exiting task has no pending cpu timers, they were cleanuped in __exit_signal()->posix_cpu_timers_exit{,_group}(), so we can just return from irq. John Stultz recently confirmed this bug, see http://marc.theaimsgroup.com/?l=linux-kernel&m=115015841413687 Signed-off-by: -
Oleg Nesterov authored
If the local timer interrupt happens just after do_exit() sets PF_EXITING (and before it clears ->it_xxx_expires) run_posix_cpu_timers() will call check_process_timers() with tasklist_lock + ->siglock held and check_process_timers: t = tsk; do { .... do { t = next_thread(t); } while (unlikely(t->flags & PF_EXITING)); } while (t != tsk); the outer loop will never stop. Actually, the window is bigger. Another process can attach the timer after ->it_xxx_expires was cleared (see the next commit) and the 'if (PF_EXITING)' check in arm_timer() is racy (see the one after that). Signed-off-by: -
Stephen Hemminger authored
A couple of fixes that should prevent crashes when using netconsole and suspend/resume. First, netconsole poll routine shouldn't run unless the device is up; second, the NAPI poll should be disabled during suspend. This is only an issue on sky2, because it has to have one NAPI poll routine for both ports on dual port boards. Normal drivers use netif_rx_schedule_prep and that checks for netif_running. Signed-off-by:
Stephen Hemminger <shemminger@osdl.org> Signed-off-by:
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Jens Axboe authored
If get_user_pages() returns less pages than what we asked for, we jump to out_unmap which will return ERR_PTR(ret). But ret can contain a positive number just smaller than local_nr_pages, so be sure to set it to -EFAULT always. Problem found and diagnosed by Damien Le Moal <damien@sdl.hitachi.co.jp> Signed-off-by:
Jens Axboe <axboe@suse.de> Signed-off-by:
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Jens Axboe authored
Some time ago the cdrom open routine was changed so that we call the driver's open routine before checking to see if it is read only. However, if we discovered that a read write open was not possible and the open flags required a writable open, we just returned -EROFS without calling the driver's release routine. This seems to work for most cdrom drivers, but breaks the Powerpc iSeries virtual cdrom rather badly. This just inserts the release call in the error path to balance the call to "->open()" done by "open_for_data()". Signed-off-by:
Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by:
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- Jun 15, 2006
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Jens Axboe authored
We don't clear the seek stat values in cfq_alloc_io_context(), and if ->seek_mean is unlucky enough to be set to -36 by chance, the first invocation of cfq_update_io_seektime() will oops with a divide by zero in do_div(). Just memset the entire cic instead of filling invididual values independently. Signed-off-by:
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- Jun 14, 2006
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Kirill Korotaev authored
If flock_lock_file() failed to allocate flock with locks_alloc_lock() then "error = 0" is returned. Need to return some non-zero. Signed-off-by:
Pavel Emelianov <xemul@openvz.org> Signed-off-by:
Kirill Korotaev <dev@openvz.org> Signed-off-by:
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Stephen Hemminger authored
The resume bug was caused not by an early interrupt but because the idle timeout was not being stopped on suspend. Also disable hardware IRQ's on suspend. Will need to revisit this with hotplug? Signed-off-by:
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Stephen Hemminger authored
The hardware should be fully shut off during suspend, and the base irq mask restored during resume. Signed-off-by:
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Stephen Hemminger authored
If the poll routine detects no hardware available, it needs to dequeue it self from the network poll list. Linus didn't understand NAPI. Signed-off-by:
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