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2010-01-27[S390] fix single stepped svcs with TRACE_IRQFLAGS=yMartin Schwidefsky2-0/+2
If irq flags tracing is enabled the TRACE_IRQS_ON macros expands to a function call which clobbers registers %r0-%r5. The macro is used in the code path for single stepped system calls. The argument registers %r2-%r6 need to be restored from the stack before the system call function is called. Cc: stable@kernel.org Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-01-27[S390] use set_current_state in sigsuspendMartin Schwidefsky1-1/+1
Use set_current_state instead of a direct assignment to set the task state of the current process. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-01-13[S390] unwire sys_recvmmsg againHeiko Carstens2-10/+0
sys_recvmmsg is reachable via sys_socketcall. So unwire it again since there is no point in having two entry points for it. Also put it to the ignore list so we don't get reminded anymore in order to wire it up. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-01-13[S390] mmap: add missing compat_ptr conversion to both mmap compat syscallsHeiko Carstens1-25/+16
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-01-13[S390] Move __cpu_logical_map to smp.cHeiko Carstens3-2/+4
Finally move it to the place where it belongs to and make get rid of it for !CONFIG_SMP. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-01-13[S390] smp: remove volatile type quilifier from __cpu_logical_mapHeiko Carstens1-1/+1
Remove pointless qualifier. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-01-13[S390] smp: setup smp_processor_id earlyHeiko Carstens2-1/+6
smp_processor_id() is supposed to work before setup_arch() gets called. Before that smp_processor_id() may return just an arbitrary value that is contained in the uninitialized boot lowcore. So provide the arch function which will override the weak function in init/main.c. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-01-13[S390] remove superfluous TIF_USEDFPU bitMartin Schwidefsky2-8/+0
The TIF_USEDFPU bit is always 0 for s390 and it is not tested anywhere. Remove the bit. At the same time remove the calls to clear_used_math() as well. The PF_USED_MATH bit is never set for s390 either. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-01-13[S390] duplicate SIGTRAP on signal delivery.Martin Schwidefsky1-9/+1
The code in do_signal sets the TIF_SINGLE_STEP bit and calls tracehook_signal_handler after the signal frame has been set up. This causes two SIGTRAP signals to be delivered to the tracer. Stop setting the TIF_SINGLE_STEP bit in do_signal to get the correct number of SIGTRAPs. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-01-13[S390] clear TIF_SINGLE_STEP for new process.Martin Schwidefsky1-0/+1
Clear the TIF_SINGLE_STEP bit in copy_thread. The new process did not get a PER event of its own. It is wrong deliver a SIGTRAP that was meant for the parent process. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-01-13[S390] fix loading of PER control registers for utrace.Martin Schwidefsky1-0/+8
If the current task enables / disables PER tracing for itself the PER control registers need to be loaded in FixPerRegisters. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-12-18[S390] Use strim instead of strstrip to avoid false warnings.Heiko Carstens1-3/+3
Cc: Michael Holzheu <holzheu@linux.vnet.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-12-18[S390] ptrace: dont abuse PT_PTRACEDOleg Nesterov1-3/+3
Nobody except ptrace itself should use task->ptrace or PT_PTRACED directly, change arch/s390/kernel/traps.c to use the helper. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Acked-by: Roland McGrath <roland@redhat.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-12-18[S390] rename NT_PRXSTATUS to NT_S390_HIGHREGSMartin Schwidefsky1-1/+1
The elf notes number for the upper register halves is s390 specific. Change the name of the elf notes to include S390. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-12-18[S390] wire up sys_recvmmsgHeiko Carstens2-0/+10
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-12-15tree-wide: convert open calls to remove spaces to skip_spaces() lib functionAndré Goddard Rosa1-1/+2
Makes use of skip_spaces() defined in lib/string.c for removing leading spaces from strings all over the tree. It decreases lib.a code size by 47 bytes and reuses the function tree-wide: text data bss dec hex filename 64688 584 592 65864 10148 (TOTALS-BEFORE) 64641 584 592 65817 10119 (TOTALS-AFTER) Also, while at it, if we see (*str && isspace(*str)), we can be sure to remove the first condition (*str) as the second one (isspace(*str)) also evaluates to 0 whenever *str == 0, making it redundant. In other words, "a char equals zero is never a space". Julia Lawall tried the semantic patch (http://coccinelle.lip6.fr) below, and found occurrences of this pattern on 3 more files: drivers/leds/led-class.c drivers/leds/ledtrig-timer.c drivers/video/output.c @@ expression str; @@ ( // ignore skip_spaces cases while (*str && isspace(*str)) { \(str++;\|++str;\) } | - *str && isspace(*str) ) Signed-off-by: André Goddard Rosa <andre.goddard@gmail.com> Cc: Julia Lawall <julia@diku.dk> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Jeff Dike <jdike@addtoit.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Richard Purdie <rpurdie@rpsys.net> Cc: Neil Brown <neilb@suse.de> Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Cc: David Howells <dhowells@redhat.com> Cc: <linux-ext4@vger.kernel.org> Cc: Samuel Ortiz <samuel@sortiz.org> Cc: Patrick McHardy <kaber@trash.net> Cc: Takashi Iwai <tiwai@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-11Unify sys_mmap*Al Viro2-57/+5
New helper - sys_mmap_pgoff(); switch syscalls to using it. Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2009-12-11Kill ancient crap in s390 compat mmapAl Viro1-5/+0
We've had TASK_SIZE set to 1<<31 for 31bit tasks since May 2004. Before that old32_mmap() had to deal with do_mmap_pgoff() giving it an address out of range. It had tried to do that by checking return value and doing do_munmap() (at wrong address, BTW). IOW, that code had been dead for 5.5 years (and bogus - for 8). Kill. Acked-by: Hugh Dickins <hugh.dickins@tiscali.co.uk> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2009-12-10Merge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6Linus Torvalds7-32/+31
* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6: (72 commits) [S390] 3215/3270 console: remove wrong comment [S390] dasd: remove BKL from extended error reporting code [S390] vmlogrdr: remove BKL [S390] vmur: remove BKL [S390] zcrypt: remove BKL [S390] 3270: remove BKL [S390] vmwatchdog: remove lock_kernel() from open() function [S390] monwriter: remove lock_kernel() from open() function [S390] monreader: remove lock_kernel() from open() function [S390] s390: remove unused nfsd #includes [S390] ftrace: build ftrace.o when CONFIG_FTRACE_SYSCALLS is set for s390 [S390] etr/stp: put correct per cpu variable [S390] tty3270: move keyboard compat ioctls [S390] sclp: improve servicability setting [S390] s390: use change recording override for kernel mapping [S390] MAINTAINERS: Add s390 drivers block [S390] use generic sockios.h header file [S390] use generic termbits.h header file [S390] smp: remove unused typedef and defines [S390] cmm: free pages on hibernate. ...
2009-12-09Merge branch 'timers-for-linus-urgent' of ↵Linus Torvalds1-1/+2
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'timers-for-linus-urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: hrtimer: Fix /proc/timer_list regression itimers: Fix racy writes to cpu_itimer fields timekeeping: Fix clock_gettime vsyscall time warp
2009-12-09Merge branch 'timers-for-linus' of ↵Linus Torvalds2-0/+4
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'timers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: timers, init: Limit the number of per cpu calibration bootup messages posix-cpu-timers: optimize and document timer_create callback clockevents: Add missing include to pacify sparse x86: vmiclock: Fix printk format x86: Fix printk format due to variable type change sparc: fix printk for change of variable type clocksource/events: Fix fallout of generic code changes nohz: Allow 32-bit machines to sleep for more than 2.15 seconds nohz: Track last do_timer() cpu nohz: Prevent clocksource wrapping during idle nohz: Type cast printk argument mips: Use generic mult/shift factor calculation for clocks clocksource: Provide a generic mult/shift factor calculation clockevents: Use u32 for mult and shift factors nohz: Introduce arch_needs_cpu nohz: Reuse ktime in sub-functions of tick_check_idle. time: Remove xtime_cache time: Implement logarithmic time accumulation
2009-12-08Merge git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/sysctl-2.6Linus Torvalds4-68/+6
* git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/sysctl-2.6: (43 commits) security/tomoyo: Remove now unnecessary handling of security_sysctl. security/tomoyo: Add a special case to handle accesses through the internal proc mount. sysctl: Drop & in front of every proc_handler. sysctl: Remove CTL_NONE and CTL_UNNUMBERED sysctl: kill dead ctl_handler definitions. sysctl: Remove the last of the generic binary sysctl support sysctl net: Remove unused binary sysctl code sysctl security/tomoyo: Don't look at ctl_name sysctl arm: Remove binary sysctl support sysctl x86: Remove dead binary sysctl support sysctl sh: Remove dead binary sysctl support sysctl powerpc: Remove dead binary sysctl support sysctl ia64: Remove dead binary sysctl support sysctl s390: Remove dead sysctl binary support sysctl frv: Remove dead binary sysctl support sysctl mips/lasat: Remove dead binary sysctl support sysctl drivers: Remove dead binary sysctl support sysctl crypto: Remove dead binary sysctl support sysctl security/keys: Remove dead binary sysctl support sysctl kernel: Remove binary sysctl logic ...
2009-12-07[S390] s390: remove unused nfsd #includesBoaz Harrosh2-10/+0
Some unused includes removed. This patch is in an effort to cleanup nfsd headers and move private definitions to source directory. Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-12-07[S390] ftrace: build ftrace.o when CONFIG_FTRACE_SYSCALLS is set for s390Aristeu Rozanski1-0/+1
Trying to build a s390x kernel with CONFIG_FTRACE_SYSCALLS will fail because ftrace.o is not built/linked. Acked-by: Frederic Weisbecker <fweisbec@gmail.com> Signed-off-by: Aristeu Rozanski <aris@redhat.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-12-07[S390] etr/stp: put correct per cpu variableHeiko Carstens1-2/+2
Fix this compile error in linux-next: arch/s390/kernel/time.c: In function 'get_sync_clock': arch/s390/kernel/time.c:337: error: 'clock_sync_sync' undeclared (first use in this function) Gets exposed because the new per cpu code references the variable passed to put_cpu_var. This was not a real bug. Reported-by: Sachin Sant <sachinp@in.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-12-07[S390] Improve address space mode selection.Martin Schwidefsky2-20/+25
Introduce user_mode to replace the two variables switch_amode and s390_noexec. There are three valid combinations of the old values: 1) switch_amode == 0 && s390_noexec == 0 2) switch_amode == 1 && s390_noexec == 0 3) switch_amode == 1 && s390_noexec == 1 They get replaced by 1) user_mode == HOME_SPACE_MODE 2) user_mode == PRIMARY_SPACE_MODE 3) user_mode == SECONDARY_SPACE_MODE The new kernel parameter user_mode=[primary,secondary,home] lets you choose the address space mode the user space processes should use. In addition the CONFIG_S390_SWITCH_AMODE config option is removed. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-12-07[S390] s390: clear high-order bits of registers after sam64Hendrik Brueckner1-0/+3
When the kernel is IPLed without the CLEAR option and switches to 64-bit, the high-order half of the registers might contain random values. This can cause addressing exceptions and the kernel enters an interrupt loop. Initialize the high-order half of the general purpose registers with zeros after switching to 64-bit mode. Cc: <stable@kernel.org> Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-12-05Merge branch 'tracing-core-for-linus' of ↵Linus Torvalds1-65/+2
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'tracing-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (40 commits) tracing: Separate raw syscall from syscall tracer ring-buffer-benchmark: Add parameters to set produce/consumer priorities tracing, function tracer: Clean up strstrip() usage ring-buffer benchmark: Run producer/consumer threads at nice +19 tracing: Remove the stale include/trace/power.h tracing: Only print objcopy version warning once from recordmcount tracing: Prevent build warning: 'ftrace_graph_buf' defined but not used ring-buffer: Move access to commit_page up into function used tracing: do not disable interrupts for trace_clock_local ring-buffer: Add multiple iterations between benchmark timestamps kprobes: Sanitize struct kretprobe_instance allocations tracing: Fix to use __always_unused attribute compiler: Introduce __always_unused tracing: Exit with error if a weak function is used in recordmcount.pl tracing: Move conditional into update_funcs() in recordmcount.pl tracing: Add regex for weak functions in recordmcount.pl tracing: Move mcount section search to front of loop in recordmcount.pl tracing: Fix objcopy revision check in recordmcount.pl tracing: Check absolute path of input file in recordmcount.pl tracing: Correct the check for number of arguments in recordmcount.pl ...
2009-11-18sysctl: Drop & in front of every proc_handler.Eric W. Biederman1-2/+2
For consistency drop & in front of every proc_handler. Explicity taking the address is unnecessary and it prevents optimizations like stubbing the proc_handlers to NULL. Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Joe Perches <joe@perches.com> Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
2009-11-17timekeeping: Fix clock_gettime vsyscall time warpLin Ming1-1/+2
Since commit 0a544198 "timekeeping: Move NTP adjusted clock multiplier to struct timekeeper" the clock multiplier of vsyscall is updated with the unmodified clock multiplier of the clock source and not with the NTP adjusted multiplier of the timekeeper. This causes user space observerable time warps: new CLOCK-warp maximum: 120 nsecs, 00000025c337c537 -> 00000025c337c4bf Add a new argument "mult" to update_vsyscall() and hand in the timekeeping internal NTP adjusted multiplier. Signed-off-by: Lin Ming <ming.m.lin@intel.com> Cc: "Zhang Yanmin" <yanmin_zhang@linux.intel.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Tony Luck <tony.luck@intel.com> LKML-Reference: <1258436990.17765.83.camel@minggr.sh.intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2009-11-13[S390] s390: fix single stepping on svc0Christian Borntraeger2-8/+8
On s390 there are two ways of specifying the system call number for the svc instruction. The standard way is to use the immediate field in the instruction (or to use EXecute for values unknown during assemble time). This can encode 256 system calls. The kernel ABI also allows to put the system call number in r1 and then execute svc 0 to enable system call numbers > 255. It turns out that single stepping svc 0 is broken, since the PER program check handler uses r1. We have to use a different register. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-11-13[S390] reset cputime accounting after IPL from NSSMartin Schwidefsky1-0/+9
After an IPL from NSS the uptime of the system is incorrect. The reason is that the startup code in head.S is not executed in case of an IPL from NSS. Due to that sched_clock_base_cc which is used to initialze wall_to_monotonic contains the time stamp when the NSS has been created instead of the time stamp of the system start. Reinitialize the cputime accounting values in create_kernel_nss after the SAVESYS CP command that created the NSS segment. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-11-12sysctl s390: Remove dead sysctl binary supportEric W. Biederman1-7/+2
Now that sys_sysctl is a generic wrapper around /proc/sys .ctl_name and .strategy members of sysctl tables are dead code. Remove them. Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
2009-11-06sysctl: s390 Use the compat_sys_sysctlEric W. Biederman3-59/+2
Now that we have a generic 32bit compatibility implementation there is no need for s390 to implement it's own. Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
2009-11-05nohz: Introduce arch_needs_cpuMartin Schwidefsky2-0/+4
Allow the architecture to request a normal jiffy tick when the system goes idle and tick_nohz_stop_sched_tick is called . On s390 the hook is used to prevent the system going fully idle if there has been an interrupt other than a clock comparator interrupt since the last wakeup. On s390 the HiperSockets response time for 1 connection ping-pong goes down from 42 to 34 microseconds. The CPU cost decreases by 27%. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> LKML-Reference: <20090929122533.402715150@de.ibm.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2009-10-29[S390] smp: fix sigp sense handlingHeiko Carstens2-1/+1
sigp sense only returns the status of a cpu if it is non zero. If the status of the sensed cpu is all zeros condition code 0 (accpeted) is set and no status bits are returned. The current code however assumes that a status was returned and tests bits in it. This means uninitalized data is accessed with random results. Worst case is that the code that checks if cpu is offline on cpu hotplug assumes that the target cpu is offline while it is still running. This leads potentially to memory corruption since resources that are still needed by the target cpu will be freed and could be resused while still in use. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-10-29[S390] smp: fix sigp stop handlingHeiko Carstens3-6/+6
According to the architecture a cpu must not necessarily enter stopped state after completion of a sigp instruction with "stop" order code. So remove the BUG() statement after self sending sigp stop to avoid that it ever gets reached. Also add a sigp busy check to make sure that the order gets delivered. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-10-29[S390] smp: fix prefix handling of offlined cpusHeiko Carstens1-0/+2
Offlined cpus still have valid prefix register contents. Dumpers will store the register contents of a cpu to the location where its prefix register points to. For offlined cpus the area (lowcore) has been freed and the dumper would write the uninteresting contents of the offline cpu to a memory location which might be in use by some other component and destroy valueable information. To fix this set the prefix register of offline cpus to absolute address zero again. This prevents the current dumpers to write to random memory locations. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-10-29Merge branch 'tracing/urgent' into tracing/coreIngo Molnar10-26/+151
Merge reason: Pick up fixes and move base from -rc1 to -rc5. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-14[S390] Add highgprs facility to /proc/cpuinfoAndreas Krebbel1-3/+3
This patch makes the hwcap bit for the high gprs feature to be visible in /proc/cpuinfo. Signed-off-by: Andreas Krebbel <Andreas.Krebbel@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-10-14tracing: Move syscalls metadata handling from arch to coreFrederic Weisbecker1-65/+2
Most of the syscalls metadata processing is done from arch. But these operations are mostly generic accross archs. Especially now that we have a common variable name that expresses the number of syscalls supported by an arch: NR_syscalls, the only remaining bits that need to reside in arch is the syscall nr to addr translation. v2: Compare syscalls symbols only after the "sys" prefix so that we avoid spurious mismatches with archs that have syscalls wrappers, in which case syscalls symbols have "SyS" prefixed aliases. (Reported by: Heiko Carstens) Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Li Zefan <lizf@cn.fujitsu.com> Cc: Masami Hiramatsu <mhiramat@redhat.com> Cc: Jason Baron <jbaron@redhat.com> Cc: Lai Jiangshan <laijs@cn.fujitsu.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Paul Mundt <lethal@linux-sh.org>
2009-10-06[S390] 64-bit register support for 31-bit processesHeiko Carstens3-4/+116
From: Heiko Carstens <heiko.carstens@de.ibm.com> From: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-10-06[S390] hibernate: Use correct place for CPU address in lowcoreMichael Holzheu1-3/+2
We used address 0x1084 instead of 0x84 to store the suspend CPU address. With this patch we use the correct address 0x84 as it is defined in the POP. Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-10-06[S390] pm: ignore time spend in suspended stateMartin Schwidefsky1-4/+17
The time a system has been suspended should not show up in any of the cputime accounting fields. The time of inactivity is definitly not any form of real cputime nor is it idle time. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-10-06[S390] perf_counter: fix vdso detectionHeiko Carstens1-8/+8
s390 version of f2053f1a "powerpc/perf_counter: Fix vdso detection". Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-10-06[S390] ftrace: drop nmi protectionHeiko Carstens1-3/+0
The function graph tracer used to have a protection against NMI while entering a function entry tracing. But this is useless now, the tracer is reentrant and the ring buffer supports NMI tracing. Same as 07868b086cca784f4b532fc2ab574ec3a73b468a for x86. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-10-06[S390] compat: fix truncate system call wrapperHeiko Carstens1-1/+1
The system call takes a signed length parameter. So perform sign extension instead of zero extension. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-10-06[S390] module: fix memory leak in s390 module loaderChristian Borntraeger1-0/+3
The s390 version of module_frob_arch_sections allocates additional syminfos for got and plt offsets. These syminfos are freed on sucessful module load. If the module fails to load (e.g. missing dependency when using insmod instead of modprobe) this area is not freed. This patch lets module_free free this area. Please note, we have to set the pointer to NULL since module_free is called several times from the generic code. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-10-06[S390] Enable kmemleak on s390.Heiko Carstens1-0/+1
Also increase the maximum possible kmemleak early log entries since 2000 are not sufficient on s390. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-09-24sysctl: remove "struct file *" argument of ->proc_handlerAlexey Dobriyan1-2/+2
It's unused. It isn't needed -- read or write flag is already passed and sysctl shouldn't care about the rest. It _was_ used in two places at arch/frv for some reason. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: David Howells <dhowells@redhat.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: "David S. Miller" <davem@davemloft.net> Cc: James Morris <jmorris@namei.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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