- 09 9月, 2009 2 次提交
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由 David S. Miller 提交于
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 David S. Miller 提交于
Use a per-cpu 'wd_enabled' boolean and a global atomic_t count of watchdog NMI enabled cpus which is set to '-1' if something is wrong with the watchdog and it can't be used. Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 04 9月, 2009 1 次提交
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由 Jens Axboe 提交于
This wires up the perf_counter_open() syscall so that basic software support for perf is working. Signed-off-by: NJens Axboe <jens.axboe@oracle.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 02 9月, 2009 1 次提交
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由 Alexey Dobriyan 提交于
Signed-off-by: NAlexey Dobriyan <adobriyan@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 29 8月, 2009 1 次提交
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由 Grant Grundler 提交于
On Tue, Aug 18, 2009 at 01:45:17PM -0400, John David Anglin wrote: > CC arch/parisc/kernel/traps.o > arch/parisc/kernel/traps.c: In function 'handle_interruption': > arch/parisc/kernel/traps.c:535:18: warning: operation on 'regs->iasq[0]' > may be undefined Yes - Line 535 should use both [0] and [1]. Reported-by: NJohn David Anglin <dave@hiauly1.hia.nrc.ca> Signed-off-by: NGrant Grundler <grundler@parisc-linux.org> Signed-off-by: NKyle McMartin <kyle@mcmartin.ca> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 27 8月, 2009 6 次提交
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由 Geoff Levand 提交于
Update ps3_defconfig. o Refresh for 2.6.31. o Remove MTD support. o Add more HID drivers. Signed-off-by: NGeoff Levand <geoffrey.levand@am.sony.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Geert Uytterhoeven 提交于
On non-PS3, we get: | kernel BUG at drivers/rtc/rtc-ps3.c:36! because the rtc-ps3 platform device is registered unconditionally in a kernel with builtin support for PS3. Reported-by: NSachin Sant <sachinp@in.ibm.com> Signed-off-by: NGeert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> Acked-by: NGeoff Levand <geoffrey.levand@am.sony.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Geert Uytterhoeven 提交于
Signed-off-by: NGeert Uytterhoeven <geert@linux-m68k.org> Acked-by: NGreg Ungerer <gerg@uclinux.org>
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由 Alexey Dobriyan 提交于
arch/m68k/include/asm/pgtable_mm.h:148:1: warning: "pgprot_noncached" redefined In file included from arch/m68k/include/asm/pgtable_mm.h:138, from arch/m68k/include/asm/pgtable.h:4, from include/linux/mm.h:40, from include/linux/pagemap.h:7, from include/linux/blkdev.h:12, from arch/m68k/emu/nfblock.c:17: include/asm-generic/pgtable.h:133:1: warning: this is the location of the previous definition pgprot_noncached() should be defined _before_ including asm-generic/pgtable.h Signed-off-by: NAlexey Dobriyan <adobriyan@gmail.com> Signed-off-by: NGeert Uytterhoeven <geert@linux-m68k.org>
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由 Andrew Morton 提交于
arch/m68k/include/asm/motorola_pgalloc.h: In function 'pte_alloc_one': arch/m68k/include/asm/motorola_pgalloc.h:44: warning: passing argument 1 of 'kunmap' from incompatible pointer type Also, remove unneeded test for kmap() failure. Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NGeert Uytterhoeven <geert@linux-m68k.org>
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由 Roel Kluin 提交于
With the postfix decrement cnt reaches -1 rather than 0. Signed-off-by: NRoel Kluin <roel.kluin@gmail.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NGeert Uytterhoeven <geert@linux-m68k.org>
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- 26 8月, 2009 4 次提交
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由 Yinghai Lu 提交于
2.6.31-rc7 does not boot on vSMP systems: [ 8.501108] CPU31: Thermal monitoring enabled (TM1) [ 8.501127] CPU 31 MCA banks SHD:2 SHD:3 SHD:5 SHD:6 SHD:8 [ 8.650254] CPU31: Intel(R) Xeon(R) CPU E5540 @ 2.53GHz stepping 04 [ 8.710324] Brought up 32 CPUs [ 8.713916] Total of 32 processors activated (162314.96 BogoMIPS). [ 8.721489] ERROR: parent span is not a superset of domain->span [ 8.727686] ERROR: domain->groups does not contain CPU0 [ 8.733091] ERROR: groups don't span domain->span [ 8.737975] ERROR: domain->cpu_power not set [ 8.742416] Ravikiran Thirumalai bisected it to: | commit 2759c328 | x86: don't call read_apic_id if !cpu_has_apic The problem is that on vSMP systems the CPUID derived initial-APICIDs are overlapping - so we need to fall back on hard_smp_processor_id() which reads the local APIC. Both come from the hardware (influenced by firmware though) so it's a tough call which one to trust. Doing the quirk expresses the vSMP property properly and also does not affect other systems, so we go for this solution instead of a revert. Reported-and-Tested-by: NRavikiran Thirumalai <kiran@scalex86.org> Signed-off-by: NYinghai Lu <yinghai@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Cyrill Gorcunov <gorcunov@gmail.com> Cc: Shai Fultheim <shai@scalex86.org> Cc: Suresh Siddha <suresh.b.siddha@intel.com> LKML-Reference: <4A944D3C.5030100@kernel.org> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 H. Peter Anvin 提交于
Initialize cx before calling xen_cpuid(), in order to suppress the "may be used uninitialized in this function" warning. Signed-off-by: NH. Peter Anvin <hpa@zytor.com> Cc: Jeremy Fitzhardinge <jeremy@goop.org>
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由 Jeremy Fitzhardinge 提交于
Xen always runs on CPUs which properly support WP enforcement in privileged mode, so there's no need to test for it. This also works around a crash reported by Arnd Hannemann, though I think its just a band-aid for that case. Reported-by: NArnd Hannemann <hannemann@nets.rwth-aachen.de> Signed-off-by: NJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Acked-by: NPekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: NH. Peter Anvin <hpa@zytor.com>
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由 David S. Miller 提交于
When page alloc debugging is not enabled, we essentially accept any virtual address for linear kernel TLB misses. But with kgdb, kernel address probing, and other facilities we can try to access arbitrary crap. So, make sure the address we miss on will translate to physical memory that actually exists. In order to make this work we have to embed the valid address bitmap into the kernel image. And in order to make that less expensive we make an adjustment, in that the max physical memory address is decreased to "1 << 41", even on the chips that support a 42-bit physical address space. We can do this because bit 41 indicates "I/O space" and thus covers non-memory ranges. The result of this is that: 1) kpte_linear_bitmap shrinks from 2K to 1K in size 2) we need 64K more for the valid address bitmap We can't let the valid address bitmap be dynamically allocated once we start using it to validate TLB misses, otherwise we have crazy issues to deal with wrt. recursive TLB misses and such. If we're in a TLB miss it could be the deepest trap level that's legal inside of the cpu. So if we TLB miss referencing the bitmap, the cpu will be out of trap levels and enter RED state. To guard against out-of-range accesses to the bitmap, we have to check to make sure no bits in the physical address above bit 40 are set. We could export and use last_valid_pfn for this check, but that's just an unnecessary extra memory reference. On the plus side of all this, since we load all of these translations into the special 4MB mapping TSB, and we check the TSB first for TLB misses, there should be absolutely no real cost for these new checks in the TLB miss path. Reported-by: heyongli@gmail.com Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 25 8月, 2009 2 次提交
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由 Jan Beulich 提交于
binutils prior to 2.17 can't deal with the currently possible situation of a new segment following the per-CPU segment, but that new segment being empty - objcopy misplaces the .bss (and perhaps also the .brk) sections outside of any segment. However, the current ordering of sections really just appears to be the effect of cumulative unrelated changes; re-ordering things allows to easily guarantee that the segment following the per-CPU one is non-empty, and at once eliminates the need for the bogus data.init2 segment. Once touching this code, also use the various data section helper macros from include/asm-generic/vmlinux.lds.h. -v2: fix !SMP builds. Signed-off-by: NJan Beulich <jbeulich@novell.com> Cc: <sam@ravnborg.org> LKML-Reference: <4A94085D02000078000119A5@vpn.id2.novell.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Amerigo Wang 提交于
This line looks suspicious, because if this is true, then the 'flags' parameter of function reserve_bootmem_generic() will be unused when !CONFIG_NUMA. I don't think this is what we want. Signed-off-by: NWANG Cong <amwang@redhat.com> Cc: Yinghai Lu <yinghai@kernel.org> Cc: akpm@linux-foundation.org LKML-Reference: <20090821083709.5098.52505.sendpatchset@localhost.localdomain> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 24 8月, 2009 3 次提交
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由 John Holland 提交于
Initialize PCI/PCIe on the QNAP TS-119, TS-219 and TS-219P hardware allowing the use of the discrete eSATA controller connected to the PCIe bus in the TS-219P. Signed-off-by: NJohn Holland <john.holland@cellent-fs.de> Tested-by: NThomas Reitmayr <treitmayr@devbase.at> Signed-off-by: NMartin Michlmayr <tbm@cyrius.com> Signed-off-by: NNicolas Pitre <nico@marvell.com>
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由 Martin Michlmayr 提交于
Include linux/init.h for __init to fix this error: CC [M] drivers/net/wireless/wl12xx/boot.o In file included from arch/arm/mach-kirkwood/include/mach/gpio.h:13, from arch/arm/include/asm/gpio.h:5, from include/linux/gpio.h:7, from drivers/net/wireless/wl12xx/boot.c:24: arch/arm/plat-orion/include/plat/gpio.h:32: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘orion_gpio_init’ make[6]: *** [drivers/net/wireless/wl12xx/boot.o] Error 1 make[5]: *** [drivers/net/wireless/wl12xx] Error 2 Signed-off-by: NMartin Michlmayr <tbm@cyrius.com> Signed-off-by: NNicolas Pitre <nico@marvell.com>
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由 Hendrik Brueckner 提交于
setup_arch() unconditionally sets the preferred console to ttyS. This breaks the use of 3270 devices as the console. Provide a new function to set the default preferred console for s390. The preferred console depends on the conmode parameter that is used to switch between 3270 and 3215 terminal/console mode. Signed-off-by: NHendrik Brueckner <brueckner@linux.vnet.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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- 22 8月, 2009 2 次提交
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由 Linus Torvalds 提交于
As noted in 83d349f3 ("x86: don't send an IPI to the empty set of CPU's"), some APIC's will be very unhappy with an empty destination mask. That commit added a WARN_ON() for that case, and avoided the resulting problem, but didn't fix the underlying reason for why those empty mask cases happened. This fixes that, by checking the result of 'cpumask_andnot()' of the current CPU actually has any other CPU's left in the set of CPU's to be sent a TLB flush, and not calling down to the IPI code if the mask is empty. The reason this started happening at all is that we started passing just the CPU mask pointers around in commit 4595f962 ("x86: change flush_tlb_others to take a const struct cpumask"), and when we did that, the cpumask was no longer thread-local. Before that commit, flush_tlb_mm() used to create it's own copy of 'mm->cpu_vm_mask' and pass that copy down to the low-level flush routines after having tested that it was not empty. But after changing it to just pass down the CPU mask pointer, the lower level TLB flush routines would now get a pointer to that 'mm->cpu_vm_mask', and that could still change - and become empty - after the test due to other CPU's having flushed their own TLB's. See http://bugzilla.kernel.org/show_bug.cgi?id=13933 for details. Tested-by: NThomas Björnell <thomas.bjornell@gmail.com> Cc: stable@kernel.org Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Linus Torvalds 提交于
The default_send_IPI_mask_logical() function uses the "flat" APIC mode to send an IPI to a set of CPU's at once, but if that set happens to be empty, some older local APIC's will apparently be rather unhappy. So just warn if a caller gives us an empty mask, and ignore it. This fixes a regression in 2.6.30.x, due to commit 4595f962 ("x86: change flush_tlb_others to take a const struct cpumask"), documented here: http://bugzilla.kernel.org/show_bug.cgi?id=13933 which causes a silent lock-up. It only seems to happen on PPro, P2, P3 and Athlon XP cores. Most developers sadly (or not so sadly, if you're a developer..) have more modern CPU's. Also, on x86-64 we don't use the flat APIC mode, so it would never trigger there even if the APIC didn't like sending an empty IPI mask. Reported-by: NPavel Vilim <wylda@volny.cz> Reported-and-tested-by: NThomas Björnell <thomas.bjornell@gmail.com> Reported-and-tested-by: NMartin Rogge <marogge@onlinehome.de> Cc: Mike Travis <travis@sgi.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: stable@kernel.org Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 21 8月, 2009 1 次提交
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由 Jan Beulich 提交于
The absence of vmlinux.lds here keeps .vmlinux.lds.cmd from being included, which in turn leads to it and all its dependents always getting rebuilt independent of whether they are already up-to-date. Signed-off-by: NJan Beulich <jbeulich@novell.com> LKML-Reference: <4A8D84670200007800010D31@vpn.id2.novell.com> Signed-off-by: NH. Peter Anvin <hpa@zytor.com>
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- 20 8月, 2009 3 次提交
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由 Jeremy Fitzhardinge 提交于
Make sure the stack-protector segment registers are properly set up before calling any functions which may have stack-protection compiled into them. [ Impact: prevent Xen early-boot crash when stack-protector is enabled ] Signed-off-by: NJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
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由 Jeremy Fitzhardinge 提交于
load_percpu_segment() is used to set up the per-cpu segment registers, which are also used for -fstack-protector. Make sure that the load_percpu_segment() function doesn't have stackprotector enabled. [ Impact: allow percpu setup before calling stack-protected functions ] Signed-off-by: NJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
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由 Suresh Siddha 提交于
Currently clockevents_notify() is called with interrupts enabled at some places and interrupts disabled at some other places. This results in a deadlock in this scenario. cpu A holds clockevents_lock in clockevents_notify() with irqs enabled cpu B waits for clockevents_lock in clockevents_notify() with irqs disabled cpu C doing set_mtrr() which will try to rendezvous of all the cpus. This will result in C and A come to the rendezvous point and waiting for B. B is stuck forever waiting for the spinlock and thus not reaching the rendezvous point. Fix the clockevents code so that clockevents_lock is taken with interrupts disabled and thus avoid the above deadlock. Also call lapic_timer_propagate_broadcast() on the destination cpu so that we avoid calling smp_call_function() in the clockevents notifier chain. This issue left us wondering if we need to change the MTRR rendezvous logic to use stop machine logic (instead of smp_call_function) or add a check in spinlock debug code to see if there are other spinlocks which gets taken under both interrupts enabled/disabled conditions. Signed-off-by: NSuresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: NVenkatesh Pallipadi <venkatesh.pallipadi@intel.com> Cc: "Pallipadi Venkatesh" <venkatesh.pallipadi@intel.com> Cc: "Brown Len" <len.brown@intel.com> LKML-Reference: <1250544899.2709.210.camel@sbs-t61.sc.intel.com> Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
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- 19 8月, 2009 4 次提交
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由 David S. Miller 提交于
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 David S. Miller 提交于
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 David S. Miller 提交于
Normally, srmmu uses different trap table register values to allow determination of the cpu we're on. All of the trap tables have identical content, they just sit at different offsets from the first trap table, and the offset shifted down and masked out determines the cpu we are on. The code tries to free them up when they aren't actually used (don't have all 4 cpus, we're on sun4d, etc.) but that causes problems. For one thing it triggers false positives in the DMA debugging code. And fixing that up while preserving this relative offset thing isn't trivial. So just kill the freeing code, it costs us at most 3 pages, big deal... Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Mathieu Desnoyers 提交于
I think arch/sparc/kernel/sys32.S has an incorrect splice definition: SIGN2(sys32_splice, sys_splice, %o0, %o1) The splice() prototype looks like : long splice(int fd_in, loff_t *off_in, int fd_out, loff_t *off_out, size_t len, unsigned int flags); So I think we should have : SIGN2(sys32_splice, sys_splice, %o0, %o2) Signed-off-by: NMathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 18 8月, 2009 10 次提交
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由 Jan Beulich 提交于
Commit 0e83815b changed the section the initial_code variable gets allocated in, in an attempt to address a section conflict warning. This, however created a new section conflict when building without HOTPLUG_CPU. The apparently only (reasonable) way to address this is to always use __REFDATA. Once at it, also fix a second section mismatch when not using HOTPLUG_CPU. Signed-off-by: NJan Beulich <jbeulich@novell.com> Cc: Robert Richter <robert.richter@amd.com> LKML-Reference: <4A8AE7CD020000780001054B@vpn.id2.novell.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Michal Simek 提交于
Signed-off-by: NMichal Simek <monstr@monstr.eu>
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由 Michal Simek 提交于
For noMMU system when you use larger rootfs image there is problem with using _end label because we increase klimit but in memory initialization we use still _end which is wrong. Larger mtd rootfs was rewritten by init_bootmem_node. MMU kernel use static initialization where klimit is setup to _end. There is no any other hanling with klimit. Signed-off-by: NMichal Simek <monstr@monstr.eu>
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由 Michal Simek 提交于
Signed-off-by: NMichal Simek <monstr@monstr.eu>
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由 John Williams 提交于
This code path doesn't test any returned pointers for NULL, leading to a bad kernel page fault if there's no timer/intc found. Slightly better is to BUG(), but even better still would be a printk beforehand. Signed-off-by: NJohn Williams <john.williams@petalogix.com> Signed-off-by: NMichal Simek <monstr@monstr.eu>
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由 Christoph Hellwig 提交于
Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NMichal Simek <monstr@monstr.eu>
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由 Konrad Eisele 提交于
The sparc-leon caches are virtually tagged so a flush is needed on ctx switch. Signed-off-by: NKonrad Eisele <konrad@gaisler.com> Reviewed-by: NSam Ravnborg <sam@ravnborg.org> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Konrad Eisele 提交于
The device is a AMBA bus if it is a child of prom node "ambapp" (AMBA plug and play). Two functions leon_trans_init() and leon_node_init() (defined in sparc/kernel/leon_kernel.c) are called in the prom_build_tree() path if CONFIG_SPARC_LEON is defined. leon_node_init() will build up the device tree using AMBA plug and play. Also: a extra check was addes to prom_common.c:build_one_prop() in case a rom-node is undefined which can happen for SPARC-LEON because it creates only a minimum nodes to emulate sparc behaviour. Signed-off-by: NKonrad Eisele <konrad@gaisler.com> Reviewed-by: NSam Ravnborg <sam@ravnborg.org> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Konrad Eisele 提交于
Add sparc_leon enum, M_LEON|M_LEON3_SOC machine. Add compilation of leon.c in mm and kernel if CONFIG_SPARC_LEON is defined. Add sparc_leon dependent initialization to switch statements + head.S. Signed-off-by: NKonrad Eisele <konrad@gaisler.com> Reviewed-by: NSam Ravnborg <sam@ravnborg.org> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Konrad Eisele 提交于
SPARC-LEON has a different ASI for mmu register accesses. Signed-off-by: NKonrad Eisele <konrad@gaisler.com> Reviewed-by: NSam Ravnborg <sam@ravnborg.org> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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