- 11 Sep, 2002 14 commits
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Bob Tracy authored
Minor nit: the subject driver depends on ATM, so a config-time check to see if ATM support is enabled is appropriate.
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Greg Kroah-Hartman authored
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Oliver Neukum authored
this handles the error case.
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Oliver Neukum authored
new device ids for hpusbscsi
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Oliver Neukum authored
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David Brownell authored
This removes some bugs: - a short read problem with control requests - only creates one control qh (memleak fix) - adds an omitted hardware handshake - reset timeout in octal, say what? - a couple BUG()s outlived their value Plus it deletes unused stub code for split ISO and updates some internal doc.
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David Brownell authored
* Tells about some Epson firmware that uses this as part of a Linux interop solution (PDA-ish SoCs, hmm) * Includes some GeneSys info from emails * Minor cleanups
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Mario Lang authored
HandyTech's Braille displays support a USB port, those are implemented with a GoHubs usb serial converter. The only difference is that the pID is 0x1200, not 0x1000.
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Ingo Molnar authored
This fixes the old-pthreads breakage i can reproduce. the fix is to only do the thread-group exit-completion logic in case of thread-groups.
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Ingo Molnar authored
This is another step to have better threading support under Linux, it implements the sys_exit_group() system call. It's a straightforward extension of the generic 'thread group' concept, which extension also comes handy to solve a number of problems when implementing POSIX threads. POSIX exit() [the C library function] has the following semantics: all thread have to exit and the waiting parent has to get the exit code that was specified for the exit() function. It also has to be ensured that every thread has truly finished its work by the time the parent gets the notification. The exit code has to be propagated properly to the parent thread even if not the thread group leader calls the exit() function. Normal single-thread exit is done via the pthread_exit() function, which calls sys_exit(). Previous incarnations of Linux POSIX threads implementations chose the following solution: send a 'thread management' signal to the thread group leader via tkill(), which thread goes around and kills every thread in the group (except itself), then calls sys_exit() with the proper exit code. Both old libpthreads and NGPT use this solution. This works to a certain degree, unless a userspace threading library uses the initial thread for normal thread work [like the new libpthreads], which 'work' can cause the initial thread to exit prematurely. At this point the threading library has to catch the group leader in pthread_exit() and has to keep the management thread 'hanging around' artificially, waiting for the management signal. Besides being slightly confusing to users ('why is this thread still around?') even this variant is unrobust: if the initial thread is killed by the kernel (SIGSEGV or any other thread-specific event that triggers do_exit()) then the thread goes away without the thread library having a chance to intervene. the sys_exit_group() syscall implements the mechanism within the kernel, which, besides robustness, is also *much* faster. Instead of the threading library having to tkill() every thread available, the kernel can use the already existing 'broadcast signal' capability. (the threading library cannot use broadcast signals because that would kill the initial thread as well.) as a side-effect of the completion mechanism used by sys_exit_group() it was also possible to make the initial thread hang around as a zombie until every other thread in the group has exited. A 'Z' state thread is much easier to understand by users - it's around because it has to wait for all other threads to exit first. and as a side-effect of the initial thread hanging around in a guaranteed way, there are three advantages: - signals sent to the thread group via sys_kill() work again. Previously if the initial thread exited then all subsequent sys_kill() calls to the group PID failed with a -ESRCH. - the get_pid() function got faster: it does not have to check for tgid collision anymore. - procps has an easier job displaying threaded applications - since the thread group leader is always around, no thread group can 'hide' from procps just because the thread group leader has exited. [ - NOTE: the same mechanism can/will also be used by the upcoming threaded-coredumps patch. ] there's also another (small) advantage for threading libraries: eg. the new libpthreads does not even have any notion of 'group of threads' anymore - it does not maintain any global list of threads. Via this syscall it can purely rely on the kernel to manage thread groups. the patch itself does some internal changes to the way a thread exits: now the unhashing of the PID and the signal-freeing is done atomically. This is needed to make sure the thread group leader unhashes itself precisely when the last thread group member has exited. (the sys_exit_group() syscall has been used by glibc's new libpthreads code for the past couple of weeks and the concept is working just fine.)
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Ingo Molnar authored
I forgot to remove an unused label in the deadlock fix patch.
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Sam Ravnborg authored
Remove pty.o from the export-objs list, since pty.c does not export any symbols. A /* EXPORT_SYMBOL */ comment may have fooled the original author.
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Sam Ravnborg authored
Removed compatibility cruft from zftape_syms.c. There is no need to be compatible with kernel 2.1.18 and older. Replaced FT_KSYM with direct call to EXPORT_SYMBOL.
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Ivan Kokshaysky authored
- signal update; make do_signal use generic get_signal_to_deliver() - irqs_disabled macro - remove vmlinux.lds.s target from arch/alpha/Makefile since it works correctly in the top level Makefile - extra argument for pcibios_enable_device (most likely we'll never use it though...)
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- 10 Sep, 2002 2 commits
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Jens Axboe authored
clean up with bio_kmap_irq() thing properly. remove the micro optimization of _not_ calling kmap_atomic() if this isn't a highmem page. we could keep that and do the inc_preempt_count() ourselves, but I'm not sure it's worth it and this is cleaner.
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Jens Axboe authored
into hera.kernel.org:/home/axboe/BK/linux-2.5-ide
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- 11 Sep, 2002 24 commits
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Jens Axboe authored
to bio_kmap/kunmap_irq(), which would screw the preemption count. pass in rq to ide_unmap_buffer() as well to make the right decision.
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Jens Axboe authored
o silly IS_PDC4030_DRIVE definition
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Jens Axboe authored
silly old irq and region registration etc.
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Jens Axboe authored
o byte -> u8 o use atapi register definitions o update to ide-iops changes o driver->end_request() changes o update to new ide-dma api o ->reinit to ->attach
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Jens Axboe authored
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Jens Axboe authored
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Jens Axboe authored
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Jens Axboe authored
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Jens Axboe authored
o byte -> u8
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Jens Axboe authored
o ide-iops changes (mainly moving stuff to ide-iops.c) o byte -> u8 o update to new ide-dma api o driver->end_request changes o various style cleanups o remove ALTSTAT_SCREW_UP stuff o WAIT_CMD -> WAIT_WORSTCASE interrupt timeout o add (commented out) various ata commands to match 2.4.20-pre5-ac o move the flagged_* interrupt handlers
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Jens Axboe authored
o byte -> u8 o remove various register structs, it's ide general now o ide-iops changes o various style cleanups o update to new ide-dma api o remove idetape_do_end_request(), dupe of ide core helper o ->reinit to ->attach changes
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Jens Axboe authored
o remove low level driver ifdef mess o allow "host" to register into proc list instead
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Jens Axboe authored
o byte -> u8 o drive_is_flashcard() moved to probe code o ide-iops changes o various cleanups o remove useless ide_lock debug stuff
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Jens Axboe authored
o remove *_FUNC abstraction o remove MODULE ifdefs o small style changes
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Jens Axboe authored
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Jens Axboe authored
o byte -> u8 o small style cleanups
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Jens Axboe authored
o byte -> u8 o remove various status register definitions, these are now ata (atapi) generic o ide-iops changes o remove idefloppy_end_request(), dupe of ide core helper o driver->end_request changes o lots of style cleanups o update to new dma interface o ->reinit to ->attach updates
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Jens Axboe authored
o ide-iops changes o driver->end_request and ide_end_request changes o ->dmaproc() is now split into separate functions o work on new mmio adapters o init cleanup
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Jens Axboe authored
o ide-iops changes o ide_end_request() now takes a nr_sectors argument, driver->end_request as well o remove idedisk_end_request(), it's a duplicate of ide core helper o byte -> u8 o ->reinit is now ->attach (to match 2.4.20-pre5-ac)
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Jens Axboe authored
o kill silly ide_cdrom_end_reuquest() function, it only duplicates ide core code. o use the atapi error, status, ireason, etc types o use ide-iops functions, not IN_BYTE etc o use blk_fs_request() where appropriate o limit retries on MEDIUM_ERROR sense key o use new ide_end_request() that handles nr_sectors o rename ->reinit to ->attach
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Jens Axboe authored
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Jens Axboe authored
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Jens Axboe authored
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Jens Axboe authored
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