- 17 9月, 2009 21 次提交
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由 Mike Frysinger 提交于
The current module relocation code has spotty handling wrt different memory regions (like L1 instruction). Rather than try to fix each little spot, use the new common memory functions to greatly simplify everything and make sure it is always correct. Signed-off-by: NMike Frysinger <vapier@gentoo.org>
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由 Mike Frysinger 提交于
The current module section handling code has a lot of verbose statements copied and pasted throughout which makes it pretty hard to digest at a glance. By unifying all of these up front, it is a lot easier to quickly get an idea of what is actually going on. Signed-off-by: NMike Frysinger <vapier@gentoo.org>
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由 Mike Frysinger 提交于
Signed-off-by: NMike Frysinger <vapier@gentoo.org>
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由 Mike Frysinger 提交于
Convert all printk() statements to use the common pr_xxx() funcs and use the new pr_fmt() function to standardize all of the output. Signed-off-by: NMike Frysinger <vapier@gentoo.org>
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由 Robin Getz 提交于
All kernel modules are required to be built with -mlong-calls and thus should not generate any of these relocations. If they do, it means the module has not been compiled properly, so rather than trying to handle them (and running into random run time errors) just error out on module load to force the module to be compiled correctly. Signed-off-by: NRobin Getz <robin.getz@analog.com> Signed-off-by: NMike Frysinger <vapier@gentoo.org>
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由 Mike Frysinger 提交于
Now that we have a Blackfin memory function to figure out how to properly access the different regions, drop the custom memory range checks in our ptrace code and use that. It makes the code nicer and fixes bugs where the ptrace logic wasn't handling all the different regions. Signed-off-by: NMike Frysinger <vapier@gentoo.org>
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由 Mike Frysinger 提交于
Unify the address display to shrink the code, and add missing decoding of a few special Blackfin-specific regions (L1 ROM and MMRs). Signed-off-by: NMike Frysinger <vapier@gentoo.org>
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由 Philippe Gerum 提交于
Signed-off-by: NPhilippe Gerum <rpm@xenomai.org> Signed-off-by: NMike Frysinger <vapier@gentoo.org>
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由 Philippe Gerum 提交于
Cleanup is performed in two ways: - remove extraneous updates of IPEND[4] w/ CONFIG_IPIPE, and document remaining use. - substitute pop-reg-from-stack instructions with plain SP fixups in all save-RETI-then-discard patterns. Signed-off-by: NPhilippe Gerum <rpm@xenomai.org> Signed-off-by: NMike Frysinger <vapier@gentoo.org>
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由 Philippe Gerum 提交于
Signed-off-by: NPhilippe Gerum <rpm@xenomai.org> Signed-off-by: NMike Frysinger <vapier@gentoo.org>
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由 Philippe Gerum 提交于
Signed-off-by: NPhilippe Gerum <rpm@xenomai.org> Signed-off-by: NMike Frysinger <vapier@gentoo.org>
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由 Philippe Gerum 提交于
Signed-off-by: NPhilippe Gerum <rpm@xenomai.org> Signed-off-by: NMike Frysinger <vapier@gentoo.org>
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由 Philippe Gerum 提交于
The purpose of the EVT14 handler may depend on whether CONFIG_IPIPE is enabled, albeit its implementation can be the same in both cases. When the interrupt pipeline is enabled, EVT14 can be used to raise the core priority level for the running code; when CONFIG_IPIPE is off, EVT14 can be used to lower this level before running softirq handlers. Rename evt14_softirq to evt_evt14 to pick an identifier that fits both, which allows to reuse the same vector setup code as well. Signed-off-by: NPhilippe Gerum <rpm@xenomai.org> Signed-off-by: NMike Frysinger <vapier@gentoo.org>
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由 Philippe Gerum 提交于
ret_from_fork is always entered with hw interrupts off, which prevents real-time domains to preempt the Linux kernel during part of the initial context switch to the new task, which could in turn raise the worst-case latency figures. To avoid this, stall the root domain stage in the interrupt pipeline to keep the scheduling tail code free from Linux-handled IRQs, then enable hardware interrupts again. Signed-off-by: NPhilippe Gerum <rpm@xenomai.org> Signed-off-by: NMike Frysinger <vapier@gentoo.org>
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由 Philippe Gerum 提交于
Signed-off-by: NPhilippe Gerum <rpm@xenomai.org> Signed-off-by: NMike Frysinger <vapier@gentoo.org>
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由 Philippe Gerum 提交于
__ipipe_{stall, unstall}_root_raw() identifiers may leave the reader under the impression that only the virtual state is affected by these operations, which is wrong. Pick names following the convention used throughout the interrupt pipeline code. Signed-off-by: NPhilippe Gerum <rpm@xenomai.org> Signed-off-by: NMike Frysinger <vapier@gentoo.org>
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由 Philippe Gerum 提交于
Signed-off-by: NPhilippe Gerum <rpm@xenomai.org> Signed-off-by: NMike Frysinger <vapier@gentoo.org>
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由 Robin Getz 提交于
We handle many exceptions at EVT5 (hardware error level) so that we can catch exceptions in our exception handling code. Today - if the global interrupt enable bit (IPEND[4]) is set (interrupts disabled) our trap handling code goes into a infinite loop, since we need interrupts to be on to defer things to EVT5. Normal kernel code should not trigger this for any reason as IPEND[4] gets cleared early (when doing an interrupt context save) and the kernel stack there should be sane (or something much worse is happening in the system). But there have been a few times where this has happened, so this change makes sure we dump a proper crash message even when things have gone south. Signed-off-by: NRobin Getz <robin.getz@analog.com> Signed-off-by: NMike Frysinger <vapier@gentoo.org>
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由 Barry Song 提交于
Signed-off-by: NBarry Song <barry.song@analog.com> Signed-off-by: NMike Frysinger <vapier@gentoo.org>
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由 Yi Li 提交于
Signed-off-by: NYi Li <yi.li@analog.com> Signed-off-by: NMike Frysinger <vapier@gentoo.org>
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由 Michael Hennerich 提交于
Signed-off-by: NMichael Hennerich <michael.hennerich@analog.com> Signed-off-by: NMike Frysinger <vapier@gentoo.org>
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- 16 9月, 2009 1 次提交
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由 Nicolas Pitre 提交于
Due to problems at cam.org, my nico@cam.org email address is no longer valid. FRom now on, nico@fluxnic.net should be used instead. Signed-off-by: NNicolas Pitre <nico@fluxnic.net> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 15 9月, 2009 3 次提交
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由 Anirban Sinha 提交于
console_print() is an old legacy interface mostly unused in the entire kernel tree. It's best to clean up its existing use and let developers use their own implementation of it as they feel fit. Signed-off-by: NAnirban Sinha <asinha@zeugmasystems.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Borislav Petkov 提交于
Now that decoding is done in-kernel, suppress mcelog message part. CC: Andi Kleen <andi@firstfloor.org> Signed-off-by: NBorislav Petkov <borislav.petkov@amd.com>
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由 Borislav Petkov 提交于
Move NB decoder along with required defines to EDAC MCE core. Add registration routines for further decoding of the MCE info in the AMD64 EDAC module. CC: Andi Kleen <andi@firstfloor.org> Signed-off-by: NBorislav Petkov <borislav.petkov@amd.com>
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- 12 9月, 2009 3 次提交
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由 Russell King 提交于
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Linus Walleij 提交于
This moves the primecell vendor enum definition inside vic.c out to linux/amba/bus.h where it belongs and replace any occurances of specific vendor ID:s with the respective enums instead. Signed-off-by: NLinus Walleij <linus.walleij@stericsson.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Russell King 提交于
On OMAP platforms, some people want to declare to segment up the memory between the kernel and a separate application such that there is a hole in the middle of the memory as far as Linux is concerned. However, they want to be able to mmap() the hole. This currently causes problems, because update_mmu_cache() thinks that there are valid struct pages for the "hole". Fix this by making pfn_valid() slightly more expensive, by checking whether the PFN is contained within the meminfo array. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk> Tested-by: NKhasim Syed Mohammed <khasim@ti.com>
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- 11 9月, 2009 12 次提交
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由 Heiko Carstens 提交于
Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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由 Heiko Carstens 提交于
smp_cpu_not_running() and cpu_stopped() are doing the same. Remove one and also get rid of the last hard_smp_processor_id() leftover. Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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由 Heiko Carstens 提交于
Merge cpuid.h header file into cpu.h. While at it convert from typedef to struct declaration and also convert cio code to use proper lowcore structure instead of casts. Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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由 Heiko Carstens 提交于
Saves us more than 65k pointless IPIs. Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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由 Heiko Carstens 提交于
Get rid of the PAGE_STATES config option and enable guest page hinting by default. It can be disabled by specifying "cmma=off" at the command line. Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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由 Heiko Carstens 提交于
Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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由 Michael Holzheu 提交于
Using "%s" in sprintf event functions is dangerous. This patch adds a short description for this issue to the s390 debug feature documentation. Signed-off-by: NMichael Holzheu <holzheu@linux.vnet.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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由 Heiko Carstens 提交于
"lockdep: Fix backtraces" reveales a bug in early setup code: when lockdep tries to save a stack backtrace before setup_arch has been called the lowcore pointer for the current thread info pointer isn't initialized yet. However our save stack backtrace code relies on it. If the pointer isn't initialized the saved backtrace will have zero entries. lockdep however relies (correctly) on the fact that that cannot happen. A write access to some random memory region is the result. Fix this by initializing the thread info pointer early. Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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由 Martin Schwidefsky 提交于
Suzuki Poulose reported the following recursive locking bug on s390: Here is the stack trace : (see Appendix I for more info) [<0000000000406ed6>] _spin_lock+0x52/0x94 [<0000000000103bde>] crst_table_free+0x14e/0x1a4 [<00000000001ba684>] __pmd_alloc+0x114/0x1ec [<00000000001be8d0>] handle_mm_fault+0x2cc/0xb80 [<0000000000407d62>] do_dat_exception+0x2b6/0x3a0 [<0000000000114f8c>] sysc_return+0x0/0x8 [<00000200001642b2>] 0x200001642b2 The page_table_lock is already acquired in __pmd_alloc (mm/memory.c) and it tries to populate the pud/pgd with a new pmd allocated. If another thread populates it before we get a chance, we free the pmd using pmd_free(). On s390x, pmd_free(even pud_free ) is #defined to crst_table_free(), which acquires the page_table_lock to protect the crst_table index updates. Hence this ends up in a recursive locking of the page_table_lock. The solution suggested by Dave Hansen is to use a new spin lock in the mmu context to protect the access to the crst_list and the pgtable_list. Reported-by: NSuzuki Poulose <suzuki@in.ibm.com> Cc: Dave Hansen <dave@linux.vnet.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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由 Hendrik Brueckner 提交于
Use a console_initcall() to initialize the s390 virtio console and clean up s390 console initialization in setup.c. Signed-off-by: NHendrik Brueckner <brueckner@linux.vnet.ibm.com> Tested-by: NChristian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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由 Michael Holzheu 提交于
For printing unsigned integers hypfs uses "%d" in snprintf(). This is wrong. With this patch "%u" is used instead. Signed-off-by: NMichael Holzheu <holzheu@linux.vnet.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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由 Hendrik Brueckner 提交于
If a named saved system (NSS) cannot be defined or saved, print out an error message with the return code of the underlying z/VM CP command. Signed-off-by: NHendrik Brueckner <brueckner@linux.vnet.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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