- 07 Nov, 2005 40 commits
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Paul E. McKenney authored
Remove the hlist_for_each_rcu() API, which is used only in one place, and is trivially converted to hlist_for_each_entry_rcu(), making the code shorter and more readable. Any out-of-tree uses may be similarly converted. Signed-off-by:
"Paul E. McKenney" <paulmck@us.ibm.com> Signed-off-by:
Andrew Morton <akpm@osdl.org> Signed-off-by:
Linus Torvalds <torvalds@osdl.org>
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Matt Helsley authored
This patch adds a connector that reports fork, exec, id change, and exit events for all processes to userspace. It replaces the fork_advisor patch that ELSA is currently using. Applications that may find these events useful include accounting/auditing (e.g. ELSA), system activity monitoring (e.g. top), security, and resource management (e.g. CKRM). Signed-off-by:
Matt Helsley <matthltc@us.ibm.com> Signed-off-by:
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Andrew Morton authored
If the backing_dev_info doesn't have BDI_CAP_NO_WRITEBACK we're not supposed to write back an inode's pages. But in this situation write_inode_now() refuses to write the inode itself as well. Fix. Signed-off-by:
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Prasanna S Panchamukhi authored
Andrew Morton suggested to move kprobes from kernel hacking menu, since kernel hacking menu is in-appropriate for the Kprobes. This patch moves Kprobes and Oprofile under instrumentation menu. (akpm: it's not a natural fit, but things like djprobes and the s390 guys' statistics library need a home) Signed-of-by:
Prasanna S Panchamukhi <prasanna@in.ibm.com> Cc: Philippe Elie <phil.el@wanadoo.fr> Cc: John Levon <levon@movementarian.org> Signed-off-by:
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Andrew Morton authored
Large console spews from IRQ or local_irq_disable() sections can cause the NMI watchdog to go off. Signed-off-by:
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Heiko Carstens authored
Merge common parts of head.S and head64.S into head.S and move architecture specific parts to head31.S and head64.S respectively. Saves us ~500 lines of duplicated assembly code. Acked-by:
Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by:
Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by:
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Christian Borntraeger authored
If vmcp is interrupted by a signal the vmcp command buffer is not freed. Found by Pete Zaitcev. Signed-off-by:
Christian Borntraeger <cborntra@de.ibm.com> Signed-off-by:
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Martin Schwidefsky authored
Using __typeof__(*ptr) on a pointer to const makes the __x variable in __get_user const as well. The latest gcc will refuse to write to it. Signed-off-by:
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Ursula Braun-Krahl authored
Remove duplicate timeout in qdio_establish(). Signed-off-by:
Ursula Braun-Krahl <braunu@de.ibm.com> Signed-off-by:
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Peter Oberparleiter authored
Signed-off-by:
Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by:
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Peter Oberparleiter authored
Access to FBA disks via DIAG fails for block sizes > 512 byte. The device analysis code of the DIAG discipline does not properly initialize the DIAG250 device environment after completion of the analysis. This results in VM only serving 512 bytes per block I/O request whereas Linux expects larger block sizes. Add proper device environment setup to end of analysis code. Signed-off-by:
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Peter Oberparleiter authored
Future versions of gcc may remove initialization code for control blocks used by the diag250 inline assembly due to incompletely specified constraints. This may lead to erratic behavior. Fix the diag250 inline assembly constraints. Signed-off-by:
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Christian Borntraeger authored
The test_bit function returns a non-boolean value, it returns 0,1,2,4,... instead of only 0 or 1. This causes wrongs results in the mincore system call. Check against 0 to get a proper boolean value. Signed-off-by:
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Martin Schwidefsky authored
Remove pagex pseudo page fault code. It does not work together with the system call speedup that makes the complete system call path enabled for interrupts. To make pagex and the syscall speedup code work together we would have to add code to the program check handler to do a critical section cleanup like the asynchronous interrupt code. This would make program checks slower. Not what we want. Newer versions of z/VM have the improved pfault pseudo page fault interface. This replaces the old pagex interface and does not have the problem. So its better to just rip out the pagex code. Signed-off-by:
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Cornelia Huck authored
Make the interface for setting ccw group devices on-/offline consistent with that for ccw devices: Check if the device driver provided a set_{on,off}line function and just set the device on-/offline if not. Signed-off-by:Cornelia Huck <cohuck@de.ibm.com> Signed-off-by:
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Heiko Carstens authored
Don't switch back to 24 bit addressing mode when waiting for an external interrupt and set the correct bit in wait PSW (external mask instead of I/O mask). Signed-off-by:
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Cornelia Huck authored
Fix typos and add a section about cpus in the driver-model documentation. Signed-off-by:
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Martin Schwidefsky authored
The calculation of the value return by next_timer_interrupt from jiffies to jiffies_64 is racy against xtime updates. We need to protect the calculation with read_seqbegin/read_seqretry. Signed-off-by:
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Heiko Carstens authored
Always create all signal frames for pending signals before returning to userspace, not just a single one. Signed-off-by:
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Arthur Othieno authored
No one may sleep on us until we've been down()'d. So on allocation, initialize `sleepers' to 0, just like everyone else does. Signed-off-by:
Arthur Othieno <a.othieno@bluewin.ch> Acked-by:
Christian Zankel <chris@zankel.net> Signed-off-by:
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Adrian Bunk authored
"extern inline" doesn't make much sense. Signed-off-by:
Adrian Bunk <bunk@stusta.de> Cc: Miles Bader <miles@gnu.org> Signed-off-by:
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Paolo 'Blaisorblade' Giarrusso authored
This patch reverts back the changes to HOSTCFLAGS and HOSTLDFLAGS When we were building complete binaries to get constants (such as ptrace register layout on stack) from host userspace headers, we needed to make the arch for building HOST binaries match our one: i.e. on a 64bit system compiling 32bit binaries, we compile 32-bit hostprogs and need, say, 32-bit ncurses. Now we can revert that - that avoids problem with, say, menuconfig and ncurses, on a system which can't compile well 32-bit programs. Signed-off-by:
Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Cc: Jeff Dike <jdike@addtoit.com> Signed-off-by:
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Paolo 'Blaisorblade' Giarrusso authored
Remove usage of hardcoded constants in paging_init(). By chance I spotted a bug in zones_setup involving a change to ZONE_* constants, due to the ZONE_DMA32 patch from Andi Kleen (which is in -mm). So, possibly, instead of zones_size[2] you will find zones_size[3] in the code, but that change is wrong and this patch is still correct. Signed-off-by:
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Jeff Dike authored
This makes some of the tt-specific options actually depend on CONFIG_MODE_TT. Signed-off-by:
Jeff Dike <jdike@addtoit.com> Cc: Paolo Giarrusso <blaisorblade@yahoo.it> Signed-off-by:
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Jeff Dike authored
A number of fixes to improve behavior when large physical memory sizes are specified: - libc files need -D_FILE_OFFSET_BITS=64 because there are unavoidable uses of non-64 interfaces in libc - some %d need to be %u Signed-off-by:
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Bodo Stroesser authored
Patch imlements full LDT handling in SKAS: * UML holds it's own LDT table, used to deliver data on modify_ldt(READ) * UML disables the default_ldt, inherited from the host (SKAS3) or resets LDT entries, set by host's clib and inherited in SKAS0 * A new global variable skas_needs_stub is inserted, that can be used to decide, whether stub-pages must be supported or not. * Uses the syscall-stub to replace missing PTRACE_LDT (therefore, write_ldt_entry needs to be modified) Signed-off-by:
Bodo Stroesser <bstroesser@fujitsu-siemens.com> Signed-off-by:
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Ben Lahaise authored
Not quite, something along the lines of the patch below works correctly (and makes aio performance not suffer from multiple second delays), as skas0 mode correctly switches mm contexts, unlike TT (which should probably get nuked from the kernel now that skas0 seems to be working). Signed-off-by:
Benjamin LaHaise <bcrl@linux.intel.com> Signed-off-by:
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Jeff Dike authored
The serial UML OS-abstraction layer patch (um/kernel dir). This moves all systemcalls from helper.c file under os-Linux dir Signed-off-by:
Gennady Sharapov <Gennady.V.Sharapov@intel.com> Signed-off-by:
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Jeff Dike authored
The serial UML OS-abstraction layer patch (um/kernel dir). This moves all systemcalls from main.c file under os-Linux dir and joins mem.c and um_arch.c files. Signed-off-by:
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Gennady Sharapov authored
The serial UML OS-abstraction layer patch (um/kernel dir). This moves all systemcalls from uaccess_user.c file under os-Linux dir Signed-off-by:
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Bodo Stroesser authored
ifa->ifa_address and ifa->ifa_mask are defined as __u32, but used as if they were char[4]. Network code uses htons() to convert it. So UML's method to access these fields is wrong for bigendians (e.g. s390) I replaced bytewise copying by memcpy(), maybe even that might be removed, if ifa->ifa_address/mask may be used immediately. Signed-off-by:
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Paolo 'Blaisorblade' Giarrusso authored
Jeff Dike noted that the assembly code for syscall stubs is misassembled with GCC 3.2.3: the values copied in registers weren't preserved between one asm() and the following one. So I fixed the thing by rewriting the __asm__ constraints more like unistd.h ones. Note: in syscall6 case I had to add one more instruction (i.e. moving arg6 in eax and shuffling things around) - it's needed for the function to be valid in general (we can't load the value from the stack, relative to ebp, because we change it), but could be avoided since we actually use a constant as param 6. The only fix would be to turn stub_syscall6 to a macro and use a "i" constraint for arg6 (i.e., specify it's a constant value). Signed-off-by:
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Jeff Dike authored
Add some more debugging information when a stub does something unexpected, usually segfaulting. Now, it dumps out the stub's registers as well as the signal. Signed-off-by:
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Adrian Bunk authored
"extern inline" doesn't make much sense. Signed-off-by:
Mikael Starvik <starvik@axis.com> Signed-off-by:
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Arthur Othieno authored
printk() already declared in include/linux/kernel.h so squish the duplication. Besides, no printk() usage here. Bye bye. Signed-off-by:
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Shaohua Li authored
It's widely seen a MCE non-fatal error reported after resume. It seems MCE resume is lacked under ia32. This patch tries to fix the gap. Signed-off-by:
Shaohua Li <shaohua.li@intel.com> Acked-by:
Pavel Machek <pavel@ucw.cz> Signed-off-by:
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Pavel Machek authored
Remove unused variable, and make code less evil that way. Fix whitespace around for-loop-like macro. Signed-off-by:
Pavel Machek <pavel@suse.cz> Signed-off-by:
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Pavel Machek authored
This cleans spaces between * and pointer up, and adds "int" in "unsigned int". Signed-off-by:
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Pavel Machek authored
This adds few more working systems. Signed-off-by:
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Heiko Carstens authored
Replace smp_processor_id() with any_online_cpu(cpu_online_map) in order to avoid lots of "BUG: using smp_processor_id() in preemptible [00000001] code:..." messages in case taking a cpu online fails. All the traces start at the last notifier_call_chain(...) in kernel/cpu.c. Since we hold the cpu_control semaphore it shouldn't be any problem to access cpu_online_map. The reason why cpu_up failed is simply that the cpu that was supposed to be taken online wasn't even there. That is because on s390 we never know when a new cpu comes and therefore cpu_possible_map consists of only ones and doesn't reflect reality. Signed-off-by:
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