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* Merge branch 'for-linus' of ↵Linus Torvalds2015-02-11
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull s390 updates from Martin Schwidefsky: - The remaining patches for the z13 machine support: kernel build option for z13, the cache synonym avoidance, SMT support, compare-and-delay for spinloops and the CES5S crypto adapater. - The ftrace support for function tracing with the gcc hotpatch option. This touches common code Makefiles, Steven is ok with the changes. - The hypfs file system gets an extension to access diagnose 0x0c data in user space for performance analysis for Linux running under z/VM. - The iucv hvc console gets wildcard spport for the user id filtering. - The cacheinfo code is converted to use the generic infrastructure. - Cleanup and bug fixes. * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (42 commits) s390/process: free vx save area when releasing tasks s390/hypfs: Eliminate hypfs interval s390/hypfs: Add diagnose 0c support s390/cacheinfo: don't use smp_processor_id() in preemptible context s390/zcrypt: fixed domain scanning problem (again) s390/smp: increase maximum value of NR_CPUS to 512 s390/jump label: use different nop instruction s390/jump label: add sanity checks s390/mm: correct missing space when reporting user process faults s390/dasd: cleanup profiling s390/dasd: add locking for global_profile access s390/ftrace: hotpatch support for function tracing ftrace: let notrace function attribute disable hotpatching if necessary ftrace: allow architectures to specify ftrace compile options s390: reintroduce diag 44 calls for cpu_relax() s390/zcrypt: Add support for new crypto express (CEX5S) adapter. s390/zcrypt: Number of supported ap domains is not retrievable. s390/spinlock: add compare-and-delay to lock wait loops s390/tape: remove redundant if statement s390/hvc_iucv: add simple wildcard matches to the iucv allow filter ...
| * s390/process: free vx save area when releasing tasksHendrik Brueckner2015-02-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If a task uses vector registers, a save area is allocated to save/restore register states. Free the save area when releasing the task. Found the Memory leak with kmemleak: unreferenced object 0x72885e00 (size 512): comm "vx-test", pid 26123, jiffies 4294945635 (age 256.810s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 01 db 71 06 41 .............q.A 00 00 00 00 00 00 00 00 24 f7 a9 a7 51 94 79 bb ........$...Q.y. backtrace: [<00000000002d1c8a>] kmem_cache_alloc_trace+0x272/0x3d0 [<00000000001014ac>] alloc_vector_registers+0x54/0x138 [<00000000001017c8>] data_exception+0x158/0x1b0 [<00000000008b551e>] pgm_check_handler+0x13e/0x180 [<00000000800008b6>] 0x800008b6 Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * s390/hypfs: Eliminate hypfs intervalMichael Holzheu2015-02-10
| | | | | | | | | | | | | | | | | | | | | | | | Currently the binary hypfs interfaces provides new data only once within an interval time of one second. This patch removes this restriction and now new data is returned immediately on every read on a hypfs binary file. This is done in order to allow more consistent snapshots for programs that read multiple hypfs binary files. Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * s390/hypfs: Add diagnose 0c supportMichael Holzheu2015-02-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With this feature, you can read the CPU performance metrics provided by the z/VM diagnose 0C. This then allows to get the management time for each online CPU of the guest where the diagnose is executed. The new debugfs file /sys/kernel/debug/s390_hypfs/diag_0c exports the diag0C binary data to user space via an open/read/close interface. The binary data consists out of a header structure followed by an array that contains the diagnose 0c data for each online CPU. Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * s390/cacheinfo: don't use smp_processor_id() in preemptible contextHeiko Carstens2015-02-10
| | | | | | | | | | | | | | | | | | | | | | | | | | show_cacheinfo() needs to access the cacheinfo structure of any online cpu. This was done with using smp_processor_id() as in index while in preemtible context. This means the cpu could be offline and the data be gone when it would be accessed. Better use any online cpu address and protect the data by get_online_cpus() and put_online_cpus(). Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * s390/zcrypt: fixed domain scanning problem (again)Ingo Tuchscherer2015-02-04
| | | | | | | | | | | | | | | | | | | | Older machines with more then 16 domains need a special check before PQAP instructions can be processed. With commit 5bc334bff9a6e189 this check was reverted by accident. This patch re-establishes the additional code needed for checking the extended domains for older machines. Signed-off-by: Ingo Tuchscherer <ingo.tuchscherer@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * s390/smp: increase maximum value of NR_CPUS to 512Heiko Carstens2015-01-30
| | | | | | | | | | | | | | With SMT we can have more than 256 CPUs. Let's make them available. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * s390/jump label: use different nop instructionHeiko Carstens2015-01-29
| | | | | | | | | | | | | | | | | | | | | | Use a brcl 0,2 instruction for jump label nops during compile time, so we don't mix up the different nops during mcount/hotpatch call site detection. The initial jump label code instruction replacement will exchange these instructions with either a branch or a brcl 0,0 instruction. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * s390/jump label: add sanity checksHeiko Carstens2015-01-29
| | | | | | | | | | | | | | | | | | Add sanity checks to verify that only expected code will be replaced. If the code patterns do not match print the code patterns and panic, since something went terribly wrong. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * s390/mm: correct missing space when reporting user process faultsHendrik Brueckner2015-01-29
| | | | | | | | | | Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * s390/dasd: cleanup profilingSebastian Ott2015-01-29
| | | | | | | | | | | | | | | | | | | | | | | | | | The dasd driver has a lot of duplicated code to handle dasd_global_profile. With this patch we use the same code for the global and the per device profiling data. Note that dasd_stats_write had to change slightly to maintain some odd differences between A) per device and global profile and B) proc and sysfs interface usage. Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Reviewed-by: Stefan Haberland <stefan.haberland@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * s390/dasd: add locking for global_profile accessSebastian Ott2015-01-29
| | | | | | | | | | | | | | | | | | | | Access to DASDs global statistics is done without locking which can lead to inconsistent data. Add locking to fix this. Also move the relevant structs in a global dasd_profile struct. Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Reviewed-by: Stefan Haberland <stefan.haberland@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * s390/ftrace: hotpatch support for function tracingHeiko Carstens2015-01-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Make use of gcc's hotpatch support to generate better code for ftrace function tracing. The generated code now contains only a six byte nop in each function prologue instead of a 24 byte code block which will be runtime patched to support function tracing. With the new code generation the runtime overhead for supporting function tracing is close to zero, while the original code did show a significant performance impact. Acked-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * ftrace: let notrace function attribute disable hotpatching if necessaryHeiko Carstens2015-01-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | gcc supports an s390 specific function attribute called "hotpatch". It can be used to specify the number of halfwords that shall be added before and after a function and which shall be filled with nops for runtime patching. s390 will use the hotpatch attribute for function tracing, therefore make sure that the notrace function attribute either disables the mcount call or in case of hotpatch nop generation. Acked-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * ftrace: allow architectures to specify ftrace compile optionsHeiko Carstens2015-01-29
| | | | | | | | | | | | | | | | | | | | | | | | | | If the kernel is compiled with function tracer support the -pg compile option is passed to gcc to generate extra code into the prologue of each function. This patch replaces the "open-coded" -pg compile flag with a CC_FLAGS_FTRACE makefile variable which architectures can override if a different option should be used for code generation. Acked-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * s390: reintroduce diag 44 calls for cpu_relax()Heiko Carstens2015-01-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Christian Borntraeger reported that the now missing diag 44 calls (voluntary time slice end) does cause a performance regression for stop_machine() calls if a machine has more virtual cpus than the host has physical cpus. This patch mainly reverts 57f2ffe14fd125c2 ("s390: remove diag 44 calls from cpu_relax()") with the exception that we still do not issue diag 44 calls if running with smt enabled. Due to group scheduling algorithms when running in LPAR this would lead to significant latencies. However, when running in LPAR we do not have more virtual than physical cpus. Reported-and-tested-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * s390/zcrypt: Add support for new crypto express (CEX5S) adapter.Ingo Tuchscherer2015-01-23
| | | | | | | | | | | | | | | | Extends the generic cryptographic device driver (zcrypt) to support the Crypto Express 5S adapter. Signed-off-by: Ingo Tuchscherer <ingo.tuchscherer@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * s390/zcrypt: Number of supported ap domains is not retrievable.Ingo Tuchscherer2015-01-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Upcoming versions of secure key management facilities (CCA and EP11) require information about the maximum number of supported ap domains in order to service TKE requests properly. With IBM z13 the number of available domains (so far 16) has increased up to 85. This number varies depending on machine types and models. Therefore the new sysfs attribute 'ap_max_domain_id' provides this limit of supported ap domains. Upcoming releases for CCA and EP11 will use this new information. Without this problem fix it is not possible to retrieve reliable information about the maximum number of supported ap domains. Thus, customers are not able to perform key management for CCA and EP11 coprocessor adapters. Signed-off-by: Ingo Tuchscherer <ingo.tuchscherer@de.ibm.com> Signed-off-by: Harald Freudenberger <freude@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * s390/spinlock: add compare-and-delay to lock wait loopsMartin Schwidefsky2015-01-23
| | | | | | | | | | | | | | | | | | | | | | | | Add the compare-and-delay instruction to the spin-lock and rw-lock retry loops. A CPU executing the compare-and-delay instruction stops until the lock value has changed. This is done to make the locking code for contended locks to behave better in regard to the multi- hreading facility. A thread of a core executing a compare-and-delay will allow the other threads of a core to get a larger share of the core resources. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * s390/tape: remove redundant if statementMartin Schwidefsky2015-01-22
| | | | | | | | | | | | | | | | | | | | The unit check handler for 3480 / 3490 tapes used to print a different warning message for erpa code 0x57 dependent on the device type. The warning messages have been remove in a cleanup, the if statement is a left over. Remove it. Reported-by: Fraser Brown <mlfbrown@stanford.edu> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * s390/hvc_iucv: add simple wildcard matches to the iucv allow filterHendrik Brueckner2015-01-22
| | | | | | | | | | | | | | | | | | | | | | | | Introduce a wildcard character to filter a range of z/VM user IDs with a single filter entry. Only the leading portion up to the wildcard of an filter entry contributes to the match. This reduces the filter size and avoids configuration updates when deploying new terminal server instances. Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * s390/hmcdrv: free memory on error pathChristophe Jaillet2015-01-22
| | | | | | | | | | | | | | | | | | | | Free allocated page in case of error returned by hmcdrv_ftp_startup. [heiko.carstens@de.ibm.com]: slightly changed Christophe's patch Signed-off-by: Christophe Jaillet <christophe.jaillet@wanadoo.fr> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * s390: update default configurationMartin Schwidefsky2015-01-22
| | | | | | | | Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * s390/smp: remove check for CONFIG_ZFCPDUMPPaul Bolle2015-01-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 725908110a1f ("s390: add SMT support") added a check for CONFIG_ZFCPDUMP. But the Kconfig symbol ZFCPDUMP was removed in v3.16 through commit bf28a5970de3 ("s390/dump: Remove CONFIG_ZFCPDUMP"). So this check will always evaluate to false. No one noticed probably because the code also checks for CONFIG_CRASH_DUMP which "also enables s390 zfcpdump". Dump the unneeded check. Signed-off-by: Paul Bolle <pebolle@tiscali.nl> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * dcssblk: issue warning when trying to save SN/EN type DCSSGerald Schaefer2015-01-22
| | | | | | | | | | | | | | | | | | The content of a DCSS of type SN or EN cannot be saved. Issue a warning when trying to save such a DCSS. Depending on the setup, this may be a user error or intended behaviour e.g. with a multi-DCSS device. Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * s390: add SMT supportMartin Schwidefsky2015-01-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The multi-threading facility is introduced with the z13 processor family. This patch adds code to detect the multi-threading facility. With the facility enabled each core will surface multiple hardware threads to the system. Each hardware threads looks like a normal CPU to the operating system with all its registers and properties. The SCLP interface reports the SMT topology indirectly via the maximum thread id. Each reported CPU in the result of a read-scp-information is a core representing a number of hardware threads. To reflect the reduced CPU capacity if two hardware threads run on a single core the MT utilization counter set is used to normalize the raw cputime obtained by the CPU timer deltas. This scaled cputime is reported via the taskstats interface. The normal /proc/stat numbers are based on the raw cputime and are not affected by the normalization. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * s390: avoid z13 cache aliasingMartin Schwidefsky2015-01-22
| | | | | | | | | | | | | | | | Avoid cache aliasing on z13 by aligning shared objects to multiples of 512K. The virtual addresses of a page from a shared file needs to have identical bits in the range 2^12 to 2^18. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * s390: add z13 code generation supportMartin Schwidefsky2015-01-22
| | | | | | | | | | | | Allow to generate code that only runs on z13 machines. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * s390/hmcdrv: remove unnecessary version.h inclusionSyam Sidhardhan2015-01-15
| | | | | | | | | | | | | | | | version.h inclusion is not necessary as detected by versioncheck. Signed-off-by: Syam Sidhardhan <s.syam@samsung.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * s390/docs: Remove section about script debugging from Debugging390.txtThomas Huth2015-01-15
| | | | | | | | | | | | | | | | | | The section about debugging scripting languages has nothing to do with s390 (and the example is even apparently taken from a i586 host instead), so let's remove this chapter from the file. Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * s390/docs: Break long lines in Debugging390.txtThomas Huth2015-01-15
| | | | | | | | | | | | | | | | | | | | | | There are a lot of lines that are longer than 80 columns in this file, rendering it hard to read in a terminal window. This patch fixes most of these long lines, and while we're at it, also makes some sentences more readable, e.g. by replacing "&" with "and", adding proper punctuation, removing superfluous clauses, etc. Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * s390: move cacheinfo sysfs to generic cacheinfo infrastructureSudeep Holla2015-01-08
| | | | | | | | | | | | | | | | | | | | | | This patch removes the redundant sysfs cacheinfo code by reusing the newly introduced generic cacheinfo infrastructure through the commit 246246cbde5e ("drivers: base: support cpu cache information interface to userspace via sysfs") Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * s390/crypto: remove 'const' to avoid compiler warningsChen Gang2015-01-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In aes_encrypt() and aes_decrypt(), need let 'sctx->key' be modified, so remove 'const' for it. The related warnings: CC [M] arch/s390/crypto/aes_s390.o arch/s390/crypto/aes_s390.c: In function 'aes_encrypt': arch/s390/crypto/aes_s390.c:146:37: warning: passing argument 2 of 'crypt_s390_km' discards 'const' qualifier from pointer target type [-Wdiscarded-array-qualifiers] crypt_s390_km(KM_AES_128_ENCRYPT, &sctx->key, out, in, ^ ... In file included from arch/s390/crypto/aes_s390.c:29:0: arch/s390/crypto/crypt_s390.h:154:19: note: expected 'void *' but argument is of type 'const u8 (*)[32] {aka const unsigned char (*)[32]}' static inline int crypt_s390_km(long func, void *param, ^ Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * s390: remove unnecessary KERN_CONTJoe Perches2015-01-08
| | | | | | | | | | | | | | | | | | | | | | This has no effect as KERN_CONT is an empty string, It's probably just a missing conversion artifact as the other pr_cont uses in the same file don't have this prefix. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * s390/sclp: sign extend return value of _sclp_print_early()Heiko Carstens2015-01-08
| | | | | | | | | | | | | | | | | | | | _sclp_print_early() has a return value, but misses to sign extend it if called from 64 bit code. This is not really a bug, since currently no caller cares what the return value is. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * s390/sclp: fix declaration of _sclp_print_early()Chen Gang2015-01-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | _sclp_print_early() has return value: at present, return 0 for OK, 1 for failure. It returns '%r2', so use 'long' as return value (upper caller can check '%r2' directly). The related warning: CC arch/s390/boot/compressed/misc.o arch/s390/boot/compressed/misc.c:66:8: warning: type defaults to 'int' in declaration of '_sclp_print_early' [-Wimplicit-int] extern _sclp_print_early(const char *); ^ At present, _sclp_print_early() is only used by puts(), so can still remain its declaration in 'misc.c' file. [heiko.carstens@de.ibm.com]: move declaration to sclp.h header file Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * s390: keep Kconfig sortedHeiko Carstens2015-01-08
| | | | | | | | | | Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * s390/cio: idset.c: remove some unused functionsRickard Strandqvist2015-01-08
| | | | | | | | | | | | | | | | | | | | | | Removes some functions that are not used anywhere: idset_clear() idset_sch_get_first() This was partially found by using a static code analysis program called cppcheck. Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * s390/signal: add sys_sigreturn and sys_rt_sigreturn declarationsHeiko Carstens2015-01-08
| | | | | | | | | | | | | | | | Get rid of sparse warnings like this one: arch/s390/kernel/signal.c:244:1: warning: symbol 'sys_sigreturn' was not declared. Should it be static? Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
| * s390/pgtable: add unsigned long castsHeiko Carstens2015-01-08
| | | | | | | | | | | | | | Get rid of warnings like this one: warning: constant 0xffe0000000000000 is so big it is unsigned long Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
| * s390/disassembler: remove indentical initializerHeiko Carstens2015-01-08
| | | | | | | | | | | | Remove one of the two identical initializer entries. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
| * s390/pci: add missing address space annotationHeiko Carstens2015-01-08
| | | | | | | | Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
| * s390/ftrace: add code replacement sanity checksHeiko Carstens2015-01-08
| | | | | | | | | | | | | | Always verify that the to be replaced code matches what we expect to see. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* | Merge tag 'please-pull-pstore' of ↵Linus Torvalds2015-02-11
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux Pull pstore update from Tony Luck: "Miscellaneous fs/pstore fixes" * tag 'please-pull-pstore' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux: pstore: Fix sprintf format specifier in pstore_dump() pstore: Add pmsg - user-space accessible pstore object pstore: Handle zero-sized prz in series pstore: Remove superfluous memory size check pstore: Use scnprintf() in pstore_mkfile()
| * | pstore: Fix sprintf format specifier in pstore_dump()alex chen2015-01-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We should use sprintf format specifier "%u" instead of "%d" for argument of type 'unsigned int' in pstore_dump(). Signed-off-by: Alex Chen <alex.chen@huawei.com> Reviewed-by: Joseph Qi <joseph.qi@huawei.com> Acked-by: Kees Cook <keescook@chromium.org> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * | pstore: Add pmsg - user-space accessible pstore objectMark Salyzyn2015-01-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A secured user-space accessible pstore object. Writes to /dev/pmsg0 are appended to the buffer, on reboot the persistent contents are available in /sys/fs/pstore/pmsg-ramoops-[ID]. One possible use is syslogd, or other daemon, can write messages, then on reboot provides a means to triage user-space activities leading up to a panic as a companion to the pstore dmesg or console logs. Signed-off-by: Mark Salyzyn <salyzyn@android.com> Acked-by: Kees Cook <keescook@chromium.org> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * | pstore: Handle zero-sized prz in seriesMark Salyzyn2015-01-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ramoops_pstore_read fails to return the next in a prz series after first zero-sized entry, not venturing to the next non-zero entry. Signed-off-by: Mark Salyzyn <salyzyn@android.com> Acked-by: Kees Cook <keescook@chromium.org> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * | pstore: Remove superfluous memory size checkMark Salyzyn2015-01-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | All previous checks will fail with error if memory size is not sufficient to register a zone, so this legacy check has become redundant. Signed-off-by: Mark Salyzyn <salyzyn@android.com> Acked-by: Kees Cook <keescook@chromium.org> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * | pstore: Use scnprintf() in pstore_mkfile()Mark Salyzyn2015-01-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | No guarantees that the names will not exceed the name buffer with future adjustments. Signed-off-by: Mark Salyzyn <salyzyn@android.com> Acked-by: Kees Cook <keescook@chromium.org> Signed-off-by: Tony Luck <tony.luck@intel.com>
* | | Merge tag 'nfs-for-3.20-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfsLinus Torvalds2015-02-11
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull NFS client updates from Trond Myklebust: "Highlights incluse: Features: - Removing the forced serialisation of open()/close() calls in NFSv4.x (x>0) makes for a significant performance improvement in metadata intensive workloads. - Full support for the pNFS "flexible files" layout type - Further RPC/RDMA client improvements from Chuck Bugfixes: - Stable fix: NFSv4.1 backchannel calls blocking operations with !TASK_RUNNING - Stable fix: pnfs_generic_pg_init_read/write can be called with lseg == NULL - Stable fix: Fix an Oopsable condition when nsm_mon_unmon is called as part of the namespace cleanup, - Stable fix: Ensure we reference the inode for return-on-close in delegreturn - Use SO_REUSEPORT to ensure that NFSv3 TCP connections can rebind to the same source address/port combination during a disconnect/ reconnect event. This is a requirement imposed by most NFSv3 server duplicate reply cache implementations. Optimisations: - Ask for no NFSv4.1 delegations on OPEN if using O_DIRECT Other: - Add Anna Schumaker as co-maintainer for the NFS client" * tag 'nfs-for-3.20-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (119 commits) SUNRPC: Cleanup to remove xs_tcp_close() pnfs: delete an unintended goto pnfs/flexfiles: Do not dprintk after the free SUNRPC: Fix stupid typo in xs_sock_set_reuseport SUNRPC: Define xs_tcp_fin_timeout only if CONFIG_SUNRPC_DEBUG SUNRPC: Handle connection reset more efficiently. SUNRPC: Remove the redundant XPRT_CONNECTION_CLOSE flag SUNRPC: Make xs_tcp_close() do a socket shutdown rather than a sock_release SUNRPC: Ensure xs_tcp_shutdown() requests a full close of the connection SUNRPC: Cleanup to remove remaining uses of XPRT_CONNECTION_ABORT SUNRPC: Remove TCP socket linger code SUNRPC: Remove TCP client connection reset hack SUNRPC: TCP/UDP always close the old socket before reconnecting SUNRPC: Add helpers to prevent socket create from racing SUNRPC: Ensure xs_reset_transport() resets the close connection flags SUNRPC: Do not clear the source port in xs_reset_transport SUNRPC: Handle EADDRINUSE on connect SUNRPC: Set SO_REUSEPORT socket option for TCP connections NFSv4.1: Fix pnfs_put_lseg races NFSv4.1: pnfs_send_layoutreturn should use GFP_NOFS ...
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