- 22 Oct, 2005 37 commits
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James Bottomley authored
Fix the alloc_slabmgmt panic Hopefully this should also fix a lot of other intermittent kernel bugs. The problem has been around since 2.6.9-rc2-pa6 when we allowed floating point registers to be used in kernel code. The essence of the problem is that gcc prefers to use floating point for integer divides and multiples. Further, it can rely on the values in the no clobber fp regs being correct across a function call. Unfortunately, our task switch function only saves the integer no clobber registers, not the fp ones, so if gcc makes a function call to any function in the kernel which could sleep, the values it is relying on in any no clobber floating point register may be lost. In the case of alloc_slabmgmt, the value of the page offset is being stored in %fr12 across a call to kmem_getpages(), which sleeps if no pages are available. Thus, the offset can be trashed and the slab code can end up with a completely bogus address leading to corruption. Kudos to Randolph who came up with the program to trip this problem at will and thus allowed it to be tracked and fixed. Signed-off-by:
James Bottomley <jejb@parisc-linux.org> Signed-off-by:
Kyle McMartin <kyle@parisc-linux.org>
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Carlos O'Donell authored
* arch/parisc/kernel/process.c (sys_clone): Use 5 args, and process CLONE_PARENT_SETTID, CLONE_CHILD_SETTID, CLONE_CHILD_CLEARTID. (copy_thread): First cut at CLONE_SETTLS. Signed-off-by:
Carlos O'Donell <carlos@parisc-linux.org> Signed-off-by:
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Grant Grundler authored
2.6.14-rc2-pa1: enable 100/250/1000HZ itimer selection Signed-off-by:
Grant Grundler <grundler@parisc-linux.org> Mark floppy as broken. Thanks Joel Signed-off-by:
Matthew Wilcox <willy@parisc-linux.org> make DISCONTIGMEM depend on 64BIT Signed-off-by:
Thibaut VARENE <varenet@parisc-linux.org> Signed-off-by:
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Randolph Chung authored
Prefix changed in debian, include "gnu" in the commandline. Signed-off-by:
Randolph Chung <tausq@parisc-linux.org> Signed-off-by:
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Grant Grundler authored
Document history of PDC_NARROW a bit as it will still show up in an older kernel's .config file. Signed-off-by:
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Jesper Juhl authored
2.6.12-rc2-pa2 kfree cleanups from Jesper Juhl Signed-off-by:
Jesper Juhl <juhl-lkml@dif.dk> Signed-off-by:
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Grant Grundler authored
1) cleanup whitespace and handle proc_mkdir() failures. From: Christophe Lucas <clucas@rotomalug.org> 2) rename "dino" entry to "pcxl_dma"...also seems like it's in the wrong location. 3) don't dump resource bitmap in /proc/pcxl_dma output 4) fixup compiler warning Signed-off-by:
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Grant Grundler authored
Generate a more informative message when a resource does not have a parent. Signed-off-by:
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Matthew Wilcox authored
Get rid of some unnecessary includes Remove a layer of macro indirection around pdc_console_device Delete pdc_console_die() as it is unused Avoid double-printing on panic by clearing CON_PRINTBUFFER rather than setting con_start to be log_end Make con_start and log_end static again Signed-off-by:
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Randolph Chung authored
2.6.13-rc6-pa2 use force_sigsegv() if we have a problem setting up a frame. This is required to prevent SIGSEGV loops. Signed-off-by:
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Thibaut Varene authored
We're using fp regs now in the kernel, so we want to print them on stack dump Signed-off-by:
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Matthew Wilcox authored
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Randolph Chung authored
Disable use of fpregs in pa_memcpy, and turn on the -mdisable-fpregs flag. Signed-off-by:
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Kyle McMartin authored
git commit 976ecd12 changed our locking characteristics, and put the onus of spin_lock_init on superio.c. Signed-off-by:
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Grant Grundler authored
PA20 arch book (page 7-52 and 7-55) indicate a "sync" is required after the FDC "to enforce instruction ordering". And we want to make sure FIC is executed after FDC has retired. Signed-off-by:
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Grant Grundler authored
minor cleanup: qualify constant with "UL" Acked-by:
"Hmamouche, Youssef" <youssef@ece.utexas.edu> Signed-off-by:
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Grant Grundler authored
2.6.12-rc4-pa3 s/__LP64__/CONFIG_64BIT/ and fixup config.h usage Signed-off-by:
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Grant Grundler authored
2.6.12-rc1-pa6 use work queue in LED/LCD driver instead of tasklet. Main advantage is it allows use of msleep() in the led_LCD_driver to "atomically" perform two MMIO writes (CMD, then DATA). Lead to nice cleanup of the main led_work_func() and led_LCD_driver(). Kudos to David for being persistent. From: David Pye <dmp@davidmpye.dyndns.org> Signed-off-by:
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Jens Axboe authored
add syscall entries for ioprio_set/get as per Jens Axboe. Signed-off-by:
Jens Axboe <axboe@suse.de> Signed-off-by:
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Grant Grundler authored
Optimize ext2_find_next_zero_bit. Gives about 25% perf improvement with a rsync test with ext3. Signed-off-by:
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Stuart Brady authored
update comment about CAFL_STRIDE Signed-off-by:
Stuart Brady <sdb@parisc-linux.org> Signed-off-by:
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Kyle McMartin authored
Add support for changing unaligned trap behaviour on a per-thread basis. Signed-off-by: -
Randolph Chung authored
convert some bl calls to b,l or bv to use longer offsets Signed-off-by:
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Stuart Brady authored
o Added a control for the input source (which can be either "line" or "mic") o Mute the speaker/line-out/headphone outputs by default. o Increased the buffer size from 10 pages to 16. Signed-off-by:
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Randolph Chung authored
export profile_pc() symbol - oprofile needs it when built as a module. Signed-off-by:
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Matthew Wilcox authored
Fix some whitespace issues Reorganise parisc_device probe routine to be a little less convoluted Use ->hpa.start instead of ->hpa Signed-off-by:
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Matthew Wilcox authored
Neaten up the CONFIG_PA20 ifdefs More merge fixes, this time for SMP Signed-off-by:
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Grant Grundler authored
move pa_tlb_lock and it's primary consumers to tlb_flush.h Future step will be to move spinlock_t definition out of system.h. Signed-off-by:
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Grant Grundler authored
2.6.12-rc4-pa3 : first pass at making sure use of RFI conforms to PA 2.0 arch pages F-4 and F-5, PA 1.1 Arch page 3-19 and 3-20. The discussion revolves around all the rules for clearing PSW Q-bit. The hard part is meeting all the rules for "relied upon translation". .align directive is used to guarantee the critical sequence ends more than 8 instructions (32 bytes) from the end of page. Signed-off-by:
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Grant Grundler authored
add || STI_CONSOLE to some of the basic FONTs. May need to get at least one of them to default to "Y" for parisc. Signed-off-by:
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Matthew Wilcox authored
Fix card-mode Dino crashes on 725 (and probably other Snake) systems. Dino was coming up in fatal mode after a warm reboot. Resetting Dino brings it out of fatal mode, so do that if the status register indicates we're in fatal mode. Since this was never observed on any later systems, I presume firmware does this for us on those. Signed-off-by:
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Grant Grundler authored
revert use of %%sr0 in fdc asm. Thanks to Joel Soete for pointing out this oversight. Signed-off-by:
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Grant Grundler authored
revert use of %%sr0 in fdc asm. Thanks to Joel Soete for pointing out this oversight. Signed-off-by:
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Matthew Wilcox authored
Convert pa_dev->hpa from an unsigned long to a struct resource. Signed-off-by:
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Matthew Wilcox authored
Make /sys/bus/parisc/drivers look better by cleaning up parisc_driver names. Signed-off-by:
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Matthew Wilcox authored
Fix parse_tree_node. much more needs to be done to fix this file. Signed-off-by:
Richard Hirst <rhirst@parisc-linux.org> Do a proper depth-first search returning parents before children, using the new klist infrastructure. Signed-off-by:
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Chris Wright authored
Not sure how it slipped by, but here's a trivial typo fix for powernow. Signed-off-by:
Chris Wright <chrisw@osdl.org> [ It's "nurter" backwards.. Maybe we have a hillbilly The Shining fan? ] Signed-off-by:
Linus Torvalds <torvalds@osdl.org>
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- 21 Oct, 2005 3 commits
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Roland McGrath authored
When I originally moved exit_itimers into __exit_signal, that was the only place where we could reliably know it was the last thread in the group dying, without races. Since then we've gotten the signal_struct.live counter, and do_exit can reliably do group-wide cleanup work. This patch moves the call to do_exit, where it's made without locks. This avoids the deadlock issues that the old __exit_signal code's comment talks about, and the one that Oleg found recently with process CPU timers. [ This replaces e03d13e9, which is why it was just reverted. ] Signed-off-by:
Roland McGrath <roland@redhat.com> Signed-off-by:
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Linus Torvalds authored
Revert commit e03d13e9, to be replaced by a much nicer fix from Roland.
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Dave Jones authored
AMD recently discovered that on some hardware, there is a race condition possible when a C-state change request goes onto the bus at the same time as a P-state change request. Both requests happen, but the southbridge hardware only acknowledges the C-state change. The PowerNow! driver is then stuck in a loop, waiting for the P-state change acknowledgement. The driver eventually times out, but can no longer perform P-state changes. It turns out the solution is to resend the P-state change, which the southbridge will acknowledge normally. Thanks to Johannes Winkelmann for reporting this and testing the fix. Signed-off-by:
Mark Langsdorf <mark.langsdorf@amd.com> Signed-off-by:
Dave Jones <davej@redhat.com> Signed-off-by:
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