- 14 12月, 2005 9 次提交
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由 Jeff Garzik 提交于
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由 Jeff Garzik 提交于
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由 Jeff Garzik 提交于
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由 Linus Torvalds 提交于
Let's put my money where my mouth is. Smaller code is almost always faster, if only because a single I$ miss ends up leaving a lot of cycles to make up for. And system software - kernels in particular - are known for taking more cache misses than most other kinds. On my random config, this made the kernel about 10% smaller, and lmbench seems to say that it's pretty uniformly faster too. Your milage may vary. Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Tony Luck 提交于
ERR_SEVERITY item is defined as a 8 bits item in SAL documentation ($B.2.1 rev december 2003), but as an u16 in sal.h. This has the side effect that current code in mca.c may not call ia64_sal_clear_state_info() upon receiving corrected platform errors if there are bits set in the validation byte. Reported by Xavier Bru. Signed-off-by: NTony Luck <tony.luck@intel.com>
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由 Adrian Bunk 提交于
KOBJECT_UEVENT=n seems to be a common pitfall for udev users in 2.6.14 . -mm already contains a bigger patch removing this option that is IMHO too big for being applied now to 2.6.15-rc. This patch simply allows KOBJECT_UEVENT=n only if EMBEDDED. Signed-off-by: NAdrian Bunk <bunk@stusta.de> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Linus Torvalds 提交于
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由 Jeff Garzik 提交于
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- 13 12月, 2005 31 次提交
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由 Jesse Barnes 提交于
Combined mode sucks. Especially when both libata and the legacy IDE drivers try to drive ports on the same device, since that makes DMA rather difficult. This patch addresses the problem by allowing the user to control which driver binds to the ports in a combined mode configuration. In many cases, they'll probably want the libata driver to control both ports since it can use DMA for talking with ATAPI devices (when libata.atapi_enabled=1 of course). It also allows the user to get old school behavior by letting the legacy IDE driver bind to both ports. But neither is forced, the patch doesn't change current behavior unless one of combined_mode=ide or combined_mode=libata is passed on the boot line. Either of those options may require you to access your devices via different device nodes (/dev/hd* in the ide case and /dev/sd* in the libata case), though of course if you have udev installed nicely you may not notice anything. :) Let me know if the documentation is too cryptic, I'd be happy to expand on it if necessary. I think most users will want to boot with 'combined_mode=libata' and add 'options libata atapi_enabled=1' to their modules.conf to get good DVD playing and disk behavior (haven't tested CD or DVD writing though). I'd much rather things behave sanely by default (i.e. DMA for devices on both ports), but apparently that's difficult given the various chip bugs and hardware configs out there (not to mention that people's drives may suddenly change from /dev/hdc to /dev/sdb), so this boot option may be the correct long term fix. Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: NJeff Garzik <jgarzik@pobox.com>
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由 Jeff Garzik 提交于
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由 Jeff Garzik 提交于
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由 Jeff Garzik 提交于
Some hardware does not support the PACKET command at all. Other hardware supports ATAPI, but the driver does something nasty such as calling BUG() when an ATAPI command is issued. For these such cases, we mark them with a new flag, ATA_FLAG_NO_ATAPI. Initial version contributed by Ben Collins.
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由 Jeff Garzik 提交于
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由 Jeff Garzik 提交于
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由 Tejun Heo 提交于
There is no user of qc->waiting left after ata_exec_internal() changes. Kill the field. Signed-off-by: NTejun Heo <htejun@gmail.com> Signed-off-by: NJeff Garzik <jgarzik@pobox.com>
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由 Tejun Heo 提交于
There is no user of ata_qc_wait_err() and ata_qc_complete_noop() after ata_exec_internal() changes. Remove unused functions. Signed-off-by: NTejun Heo <htejun@gmail.com> Signed-off-by: NJeff Garzik <jgarzik@pobox.com>
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由 Tejun Heo 提交于
This patch converts all users of libata internal commands to use ata_exec_internal(). Signed-off-by: NTejun Heo <htejun@gmail.com> Signed-off-by: NJeff Garzik <jgarzik@pobox.com>
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由 Tejun Heo 提交于
This patch implements ata_exec_internal() function which performs libata internal command execution. Previously, this was done by each user by manually initializing a qc, issueing it, waiting for its completion and handling errors. In addition to obvious code factoring, using ata_exec_internal() fixes the following bugs. * qc not freed on issue failure * ap->qactive clearing could race with the next internal command * race between timeout handling and irq * ignoring error condition not represented in tf->status Also, qc & hardware are not accessed anymore once it's completed, making internal commands more conformant with general semantics. ata_exec_internal() also makes it easy to issue internal commands from multiple threads if that becomes necessary. This patch only implements ata_exec_internal(). A following patch will convert all users. Signed-off-by: NTejun Heo <htejun@gmail.com> -- Jeff, all patches have been regenerated against upstream branch as of today. (575ab52a) Also, I took out a debug printk from ata_exec_internal (don't know how that one got left there). Other than that, all patches are identical to the previous posting. Thanks. :-) Signed-off-by: NJeff Garzik <jgarzik@pobox.com>
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由 Antonino A. Daplas 提交于
The drawing function cfbfillrect does not work correctly when access is not unsigned-long aligned. It manifests as extra lines of pixels that are not complete drawn. Reversing the shift operator solves the problem, so I would presume that this bug would manifest only on little endian machines. The function cfbcopyarea may also have this bug. Aligned access should present no problems. Signed-off-by: NAntonino Daplas <adaplas@pol.net> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Antonino A. Daplas 提交于
In slow imageblit, the pixel value is shifted by a certain amount (dependent on the bpp and endianness) for each iteration. This is inefficient. Better do the shifting once before going into the loop. Signed-off-by: NAntonino Daplas <adaplas@pol.net> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Knut Petersen 提交于
Every framebuffer driver relies on the assumption that the set_par() function of the driver is called before drawing functions and other functions dependent on the hardware state are executed. Whenever you switch from X to a framebuffer console for the very first time, there is a chance that a broken X system has _not_ set the mode to KD_GRAPHICS, thus the vt and framebuffer code executes a screen redraw and several other functions before a set_par() is executed. This is believed to be not a bug of linux but a bug of X/xdm. At least some X releases used by SuSE and Debian show this behaviour. There was a 2nd case, but that has been fixed by Antonino Daplas on 10-dec-2005. This patch allows drivers to set a flag to inform fbcon_switch() that they prefer a set_par() call on every console switch, working around the problems caused by the broken X releases. The flag will be used by the next release of cyblafb and might help other drivers that assume a hardware state different to the one used by X. As the default behaviour does not change, this patch should be acceptable to everybody. Signed-off-by: NKnut Petersen <Knut_Petersen@t-online.de> Acked-by: N"Antonino A. Daplas" <adaplas@pol.net> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Antonino A. Daplas 提交于
Avoid calls to fb_pan_display when driver is suspended or not in text mode. Signed-off-by: NAntonino Daplas <adaplas@pol.net> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Antonino A. Daplas 提交于
- Fix fb_pan_display rejecting yoffsets that are valid if panning mode is ywrap. - Add more robust error checking in fb_pan_display specially since this function is accessible by userland apps. Signed-off-by: NAntonino Daplas <adaplas@pol.net> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Antonino A. Daplas 提交于
Add hooks to save and restore the graphics state. These hooks are called in fbcon_blank() when entering/leaving KD_GRAPHICS mode. This is needed by savagefb at least so it can cooperate with savage_dri and by cyblafb. State save/restoration can be full or partial. Signed-off-by: NAntonino Daplas <adaplas@pol.net> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Antonino A. Daplas 提交于
There is a bug in the complement_mask when you have a 512-character map. Linux boots to a default 256-character map and most probably your login profile is loading a 512-character map which results in a bad gpm cursor. Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Mike Miller 提交于
This patch adds setting our drv->queue = NULL back in deregister_disk. The drv->queue is part of our controller struct. blk_cleanup_queue works only on the queue in the gendisk struct. Signed-off-by: NMike Miller <mike.miller@hp.com> Cc: Jens Axboe <axboe@suse.de> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Eric Dumazet 提交于
As reported by Keith Mannthey, there are problems in populate_memnodemap() The bug was that the compute_hash_shift() was returning 31, with incorrect initialization of memnodemap[] To correct the bug, we must use (1UL << shift) instead of (1 << shift) to avoid an integer overflow, and we must check that shift < 64 to avoid an infinite loop. Signed-off-by: NEric Dumazet <dada1@cosmosbay.com> Signed-off-by: NAndi Kleen <ak@suse.de> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 john stultz 提交于
On systems that do not support the HPET legacy functions (basically the IBM x460, but there could be others), in time_init() we accidentally fall into a PM timer conditional and set the vxtime_hz value to the PM timer's frequency. We then use this value with the HPET for timekeeping. This patch (which mimics the behavior in time_init_gtod) corrects the collision. Signed-off-by: NAndi Kleen <ak@suse.de> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Andi Kleen 提交于
When a register set is passed in don't try to fix up the pointer. Noticed by Al Viro Signed-off-by: NAndi Kleen <ak@suse.de> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Andi Kleen 提交于
They report all busses as MMCONFIG capable, but it never works for the internal devices in the CPU's builtin northbridge. It just probes all func 0 devices on bus 0 (the internal northbridge is currently always on bus 0) and if they are not accessible using MCFG they are put into a special fallback bitmap. On systems where it isn't we assume the BIOS vendor supplied correct MCFG. Requires the earlier patch for mmconfig type1 fallback Signed-off-by: NAndi Kleen <ak@suse.de> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Andi Kleen 提交于
When there is no entry for a bus in MCFG fall back to type1. This is especially important on K8 systems where always some devices can't be accessed using mmconfig (in particular the builtin northbridge doesn't support it for its own devices) Cc: <gregkh@suse.de> Cc: <jgarzik@pobox.com> Signed-off-by: NAndi Kleen <ak@suse.de> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Andi Kleen 提交于
It's illegal because it can sleep. Use a two step lookup scheme instead. First look up the vm_struct, then change the direct mapping, then finally unmap it. That's ok because nobody can change the particular virtual address range as long as the vm_struct is still in the global list. Also added some LinuxDoc documentation to iounmap. Signed-off-by: NAndi Kleen <ak@suse.de> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Shaohua Li 提交于
Disabling LAPIC timer isn't sufficient. In some situations, such as we enabled NMI watchdog, there is still unexpected interrupt (such as NMI) invoked in offline CPU. This also avoids offline CPU receives spurious interrupt and anything similar. Signed-off-by: NShaohua Li <shaohua.li@intel.com> Signed-off-by: NAndi Kleen <ak@suse.de> Acked-by: N"Seth, Rohit" <rohit.seth@intel.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Andi Kleen 提交于
Otherwise TSC->HPET fallback could see incorrect state and crash later. Signed-off-by: NAndi Kleen <ak@suse.de> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Linus Torvalds 提交于
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由 Linus Torvalds 提交于
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由 Dave Airlie 提交于
Ben noticed that on certain cards we've landed the AGP space on top of the second aperture instead of after it.. Which messes things up a lot on those machines. This just moves the gart further out, a more correct fix is in the works from Ben for after 2.6.15. Signed-off-by: NDave Airlie <airlied@linux.ie> CC: Ben Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Olaf Hering 提交于
*** Warning: ".wireless_send_event" [net/ieee80211/ieee80211_crypt_tkip.ko] undefined! Signed-off-by: NOlaf Hering <olh@suse.de> net/ieee80211/Kconfig | 2 +- 1 files changed, 1 insertion(+), 1 deletion(-) Signed-off-by: NJeff Garzik <jgarzik@pobox.com>
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由 Jeff Garzik 提交于
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