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* Fix typosAndrea Gelmini2020-06-091-1/+1
| | | | | | | | | Correct various typos in the comments and tests. Reviewed-by: Ryan Moeller <[email protected]> Reviewed-by: Matthew Ahrens <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Andrea Gelmini <[email protected]> Closes #10423
* Linux 5.8 compat: __vmalloc()Michael Niewöhner2020-06-082-0/+28
| | | | | | | | | | | | | | | The `pgprot` argument has been removed from `__vmalloc` in Linux 5.8, being `PAGE_KERNEL` always now [1]. Detect this during configure and define a wrapper for older kernels. [1] https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/mm/vmalloc.c?h=next-20200605&id=88dca4ca5a93d2c09e5bbc6a62fbfc3af83c4fca Reviewed-by: Brian Behlendorf <[email protected]> Co-authored-by: Sebastian Gottschall <[email protected]> Co-authored-by: Michael Niewöhner <[email protected]> Signed-off-by: Sebastian Gottschall <[email protected]> Signed-off-by: Michael Niewöhner <[email protected]> Closes #10422
* config/kernel-inode-times: initialize timespecalaviss2020-05-041-0/+1
| | | | | | | | | | | | | Usage of this variable uninitialized triggers -Werror,-Wuninitialized when compiled under clang for linux kernel 5.6, leading the build system to believe that the function is not declared. This commit initializes the variable to suppress the warning and fix the build for kernel 5.6 with clang. Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Hiếu Lê <[email protected]> Closes #10279 Closes #10281
* Add FreeBSD support to OpenZFSMatthew Macy2020-04-147-44/+104
| | | | | | | | | | | | | | | | | | Add the FreeBSD platform code to the OpenZFS repository. As of this commit the source can be compiled and tested on FreeBSD 11 and 12. Subsequent commits are now required to compile on FreeBSD and Linux. Additionally, they must pass the ZFS Test Suite on FreeBSD which is being run by the CI. As of this commit 1230 tests pass on FreeBSD and there are no unexpected failures. Reviewed-by: Sean Eric Fagan <[email protected]> Reviewed-by: Jorgen Lundman <[email protected]> Reviewed-by: Richard Laager <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Co-authored-by: Ryan Moeller <[email protected]> Signed-off-by: Matt Macy <[email protected]> Signed-off-by: Ryan Moeller <[email protected]> Closes #898 Closes #8987
* Linux 5.7 compat: blk_alloc_queue()Brian Behlendorf2020-04-091-19/+48
| | | | | | | | | | | | | | | | | | Commit https://github.com/torvalds/linux/commit/3d745ea5 simplified the blk_alloc_queue() interface by updating it to take the request queue as an argument. Add a wrapper function which accepts the new arguments and internally uses the available interfaces. Other minor changes include increasing the Linux-Maximum to 5.6 now that 5.6 has been released. It was not bumped to 5.7 because this release has not yet been finalized and is still subject to change. Added local 'struct zvol_state_os *zso' variable to zvol_alloc. Reviewed-by: George Melikov <[email protected]> Reviewed-by: Tony Hutter <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #10181 Closes #10187
* Fix CONFIG_MODULES=no Linux kernel configBrian Behlendorf2020-02-281-4/+13
| | | | | | | | | | | | | | When configuring as builtin (--enable-linux-builtin) for kernels without loadable module support (CONFIG_MODULES=n) only the object file is created. Never a loadable kmod. Update ZFS_LINUX_TRY_COMPILE to handle this in a manor similar to the ZFS_LINUX_TEST_COMPILE_ALL macro. Reviewed-by: George Melikov <[email protected]> Reviewed-by: Tony Hutter <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #9887 Closes #10063
* Linux 5.5 compat: blkg_tryget()Brian Behlendorf2020-02-281-0/+40
| | | | | | | | | | | | | Commit https://github.com/torvalds/linux/commit/9e8d42a0f accidentally converted the static inline function blkg_tryget() to GPL-only for kernels built with CONFIG_PREEMPT_RCU=y and CONFIG_BLK_CGROUP=y. Resolve the build issue by providing our own equivalent functionality when needed which uses rcu_read_lock_sched() internally as before. Reviewed-by: Tony Hutter <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #9745 Closes #10072
* Linux 5.6 compat: ktime_get_raw_ts64()Brian Behlendorf2020-02-273-25/+57
| | | | | | | | | | | The getrawmonotonic() and getrawmonotonic64() interfaces have been fully retired. Update gethrtime() to use the replacement interface ktime_get_raw_ts64() which was introduced in the 4.18 kernel. Reviewed-by: Tony Hutter <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #10052 Closes #10064
* Use POSIX stdout/stderr redirect in configure macroAndrew J. Hesford2020-02-141-1/+1
| | | | | | | | | | | | This PR fixes an issue wherein redirecting stdout and stderr when building kernel modules in configure tests relied on a bashism that does not work as expected when /bin/sh is not bash. Reviewed-by: George Melikov <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-By: Richard Laager <[email protected]> Signed-off-by: Andrew J. Hesford <[email protected]> Closes #9990 Closes #9998
* ICP: Improve AES-GCM performanceAttila Fülöp2020-02-101-0/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently SIMD accelerated AES-GCM performance is limited by two factors: a. The need to disable preemption and interrupts and save the FPU state before using it and to do the reverse when done. Due to the way the code is organized (see (b) below) we have to pay this price twice for each 16 byte GCM block processed. b. Most processing is done in C, operating on single GCM blocks. The use of SIMD instructions is limited to the AES encryption of the counter block (AES-NI) and the Galois multiplication (PCLMULQDQ). This leads to the FPU not being fully utilized for crypto operations. To solve (a) we do crypto processing in larger chunks while owning the FPU. An `icp_gcm_avx_chunk_size` module parameter was introduced to make this chunk size tweakable. It defaults to 32 KiB. This step alone roughly doubles performance. (b) is tackled by porting and using the highly optimized openssl AES-GCM assembler routines, which do all the processing (CTR, AES, GMULT) in a single routine. Both steps together result in up to 32x reduction of the time spend in the en/decryption routines, leading up to approximately 12x throughput increase for large (128 KiB) blocks. Lastly, this commit changes the default encryption algorithm from AES-CCM to AES-GCM when setting the `encryption=on` property. Reviewed-By: Brian Behlendorf <[email protected]> Reviewed-By: Jason King <[email protected]> Reviewed-By: Tom Caputi <[email protected]> Reviewed-By: Richard Laager <[email protected]> Signed-off-by: Attila Fülöp <[email protected]> Closes #9749
* Linux 5.6 compat: timestamp_truncate()Brian Behlendorf2020-02-071-4/+27
| | | | | | | | | | | | The timestamp_truncate() function was added, it replaces the existing timespec64_trunc() function. This change renames our wrapper function to be consistent with the upstream name and updates the compatibility code for older kernels accordingly. Reviewed-by: Tony Hutter <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #9956 Closes #9961
* Linux 5.6 compat: struct proc_opsBrian Behlendorf2020-02-072-0/+43
| | | | | | | | | | | | | | The proc_ops structure was introduced to replace the use of of the file_operations structure when registering proc handlers. This change creates a new kstat_proc_op_t typedef for compatibility which can be used to pass around the correct structure. This change additionally adds the 'const' keyword to all of the existing proc operations structures. Reviewed-by: Tony Hutter <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #9961
* Fix unknown cc flag -fno-ipa-sraRyan Moeller2020-02-062-2/+24
| | | | | | | | Clang does not recognize -fno-ipa-sra, so add a check for it. Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: Prakash Surya <[email protected]> Signed-off-by: Ryan Moeller <[email protected]> Closes #9946
* Use -Werror to check if the compiler supports specific options韩朴宇2020-02-041-6/+6
| | | | | | | | | Be default, clang treats unknown warning option as warning. We need to use -Werror to make it an error. Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: Ryan Moeller <[email protected]> Signed-off-by: 12101111 <[email protected]> Closes #9927
* Disable "-fipa-sra" when using "--enable-debuginfo"Prakash Surya2020-02-031-2/+2
| | | | | | | | | | | | | | | To better enable dynamic tracing tools (e.g. "bpftrace") this change disables the "-fipa-sra" compilation optimization. This way, function signatures are not changed by the compiler, which allows us to better attach to kprobes and kretprobes with dynamic tracing tools. Otherwise, the compiler may append ".isra" to the function name, and possibly change the function arguments as well. Reviewed-by: Matt Ahrens <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: Igor Kozhukhov <[email protected]> Reviewed-by: George Melikov <[email protected]> Signed-off-by: Prakash Surya <[email protected]> Closes #9921
* Unify target_cpu handlingBrian Behlendorf2020-01-171-14/+33
| | | | | | | | | | | | | Over the years several slightly different approaches were used in the Makefiles to determine the target architecture. This change updates both the build system and Makefile to handle this in a consistent fashion. TARGET_CPU is set to i386, x86_64, powerpc, aarch6 or sparc64 and made available in the Makefiles to be used as appropriate. Reviewed-by: Ryan Moeller <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #9848
* Moves Codecov Ignore to LCOVKjeld Schouten-Lebbing2019-12-171-2/+5
| | | | | | | | | | | | | Rely on ax_code_coverage to exclude test directories. - Removes broken codecov ignore - Places ignore section in ax_code_coverage - Forwards users from codecov to LCOV for ignores Reviewed-by: Prakash Surya <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: Richard Laager <[email protected]> Signed-off-by: Kjeld Schouten-Lebbing <[email protected]> Closes #9726
* Remove zfs_vdev_elevator module optionBrian Behlendorf2019-11-272-28/+0
| | | | | | | | | | | | | As described in commit f81d5ef6 the zfs_vdev_elevator module option is being removed. Users who require this functionality should update their systems to set the disk scheduler using a udev rule. Reviewed-by: Richard Laager <[email protected]> Reviewed-by: loli10K <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Issue #8664 Closes #9417 Closes #9609
* Partially revert 5a6ac4cBrian Behlendorf2019-11-181-0/+24
| | | | | | | | | | | | | | | | | | | | | | | | Reinstate the zpl_revalidate() functionality to resolve a regression where dentries for open files during a rollback are not invalidated. The unrelated functionality for automatically unmounting .zfs/snapshots was not reverted. Nor was the addition of shrink_dcache_sb() to the zfs_resume_fs() function. This issue was not immediately caught by the CI because the test case intended to catch it was included in the list of ZTS tests which may occasionally fail for unrelated reasons. Remove all of the rollback tests from this list to help identify the frequency of any spurious failures. The rollback_003_pos.ksh test case exposes a real issue with the long standing code which needs to be investigated. Regardless, it has been enable with a small workaround in the test case itself. Reviewed-by: Matt Ahrens <[email protected]> Reviewed-by: Pavel Snajdr <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #9587 Closes #9592
* Make use of kvmalloc if available and fix vmem_alloc implementationMichael Niewöhner2019-11-132-0/+26
| | | | | | | | | | | | | | | | | This patch implements use of kvmalloc for GFP_KERNEL allocations, which may increase performance if the allocator is able to allocate physical memory, if kvmalloc is available as a public kernel interface (since v4.12). Otherwise it will simply fall back to virtual memory (vmalloc). Also fix vmem_alloc implementation which can lead to slow allocations since the first attempt with kmalloc does not make use of the noretry flag but tells the linux kernel to retry several times before it fails. Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: Matt Ahrens <[email protected]> Signed-off-by: Sebastian Gottschall <[email protected]> Signed-off-by: Michael Niewöhner <[email protected]> Closes #9034
* Linux compat: Minimum kernel version 3.10Brian Behlendorf2019-11-1270-1788/+1054
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Increase the minimum supported kernel version from 2.6.32 to 3.10. This removes support for the following Linux enterprise distributions. Distribution | Kernel | End of Life ---------------- | ------ | ------------- Ubuntu 12.04 LTS | 3.2 | Apr 28, 2017 SLES 11 | 3.0 | Mar 32, 2019 RHEL / CentOS 6 | 2.6.32 | Nov 30, 2020 The following changes were made as part of removing support. * Updated `configure` to enforce a minimum kernel version as specified in the META file (Linux-Minimum: 3.10). configure: error: *** Cannot build against kernel version 2.6.32. *** The minimum supported kernel version is 3.10. * Removed all `configure` kABI checks and matching C code for interfaces which solely predate the Linux 3.10 kernel. * Updated all `configure` kABI checks to fail when an interface is missing which was in the 3.10 kernel up to the latest 5.1 kernel. Removed the HAVE_* preprocessor defines for these checks and updated the code to unconditionally use the verified interface. * Inverted the detection logic in several kABI checks to match the new interface as it appears in 3.10 and newer and not the legacy interface. * Consolidated the following checks in to individual files. Due the large number of changes in the checks it made sense to handle this now. It would be desirable to group other related checks in the same fashion, but this as left as future work. - config/kernel-blkdev.m4 - Block device kABI checks - config/kernel-blk-queue.m4 - Block queue kABI checks - config/kernel-bio.m4 - Bio interface kABI checks * Removed the kABI checks for sops->nr_cached_objects() and sops->free_cached_objects(). These interfaces are currently unused. Signed-off-by: Brian Behlendorf <[email protected]> Closes #9566
* Remove zpl_revalidatePavel Snajdr2019-11-111-25/+0
| | | | | | | | | | | | | | | | | | | | | | | This patch removes the need for zpl_revalidate altogether. There were 3 main reasons why we used d_revalidate: 1. periodic automounted snapshots umount deferral 2. negative dentries created before snapshot rollback 3. stale inodes referenced by dentry cache after snapshot rollback Periodic snapshots deferral solution introduces zfs_exit_fs function, which is called as a part of ZFS_EXIT(zfsvfs_t) macro. Negative dentries and stale inodes are solved by flushing the dcache for the particular dataset on zfs_resume_fs call. This patch also removes now unused HAVE_S_D_OP configure test. Reviewed-by: Aleksa Sarai <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Pavel Snajdr <[email protected]> Closes #8774 Closes #9549
* Linux 4.14, 4.19, 5.0+ compat: SIMD save/restoreBrian Behlendorf2019-10-241-39/+41
| | | | | | | | | | | | | | | | | | | | Contrary to initial testing we cannot rely on these kernels to invalidate the per-cpu FPU state and restore the FPU registers. Nor can we guarantee that the kernel won't modify the FPU state which we saved in the task struck. Therefore, the kfpu_begin() and kfpu_end() functions have been updated to save and restore the FPU state using our own dedicated per-cpu FPU state variables. This has the additional advantage of allowing us to use the FPU again in user threads. So we remove the code which was added to use task queues to ensure some functions ran in kernel threads. Reviewed-by: Fabian Grünbichler <[email protected]> Reviewed-by: Tony Hutter <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Issue #9346 Closes #9403
* Detect if sed supports --in-placeRyan Moeller2019-10-162-0/+17
| | | | | | | | | | | | | | Not all versions of sed have the --in-place flag. Detect support for the flag during ./configure and provide a fallback mechanism for those systems where sed's behavior differs. The autoconf variable ${ac_inplace} can be used to choose the correct flags for editing a file in place with sed. Replace violating usages in Makefile.am with ${ac_inplace}. Reviewed-by: Chris Dunlop <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Ryan Moeller <[email protected]> Closes #9463
* OpenZFS restructuring - libsplMatthew Macy2019-10-021-1/+10
| | | | | | | | | Factor Linux specific pieces out of libspl. Reviewed-by: Ryan Moeller <[email protected]> Reviewed-by: Sean Eric Fagan <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Matt Macy <[email protected]> Closes #9336
* Perform KABI checks in parallelBrian Behlendorf2019-10-01116-2124/+3241
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Reduce the time required for ./configure to perform the needed KABI checks by allowing kbuild to compile multiple test cases in parallel. This was accomplished by splitting each test's source code from the logic handling whether that code could be compiled or not. By introducing this split it's possible to minimize the number of times kbuild needs to be invoked. As importantly, it means all of the tests can be built in parallel. This does require a little extra care since we expect some tests to fail, so the --keep-going (-k) option must be provided otherwise some tests may not get compiled. Furthermore, since a failure during the kbuild modpost phase will result in an early exit; the final linking phase is limited to tests which passed the initial compilation and produced an object file. Once everything has been built the configure script proceeds as previously. The only significant difference is that it now merely needs to test for the existence of a .ko file to determine the result of a given test. This vastly speeds up the entire process. New test cases should use ZFS_LINUX_TEST_SRC to declare their test source code and ZFS_LINUX_TEST_RESULT to check the result. All of the existing kernel-*.m4 files have been updated accordingly, see config/kernel-current-time.m4 for a basic example. The legacy ZFS_LINUX_TRY_COMPILE macro has been kept to handle special cases but it's use is not encouraged. master (secs) patched (secs) ------------- ---------------- autogen.sh 61 68 configure 137 24 (~17% of current run time) make -j $(nproc) 44 44 make rpms 287 150 Reviewed-by: Tony Hutter <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #8547 Closes #9132 Closes #9341
* OpenZFS restructuring - move platform specific headersMatthew Macy2019-09-052-0/+27
| | | | | | | | | | | | | | | | | Move platform specific Linux headers under include/os/linux/. Update the build system accordingly to detect the platform. This lays some of the initial groundwork to supporting building for other platforms. As part of this change it was necessary to create both a user and kernel space sys/simd.h header which can be included in either context. No functional change, the source has been refactored and the relevant #include's updated. Reviewed-by: Jorgen Lundman <[email protected]> Reviewed-by: Igor Kozhukhov <[email protected]> Signed-off-by: Matthew Macy <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #9198
* Fix typos in config/Andrea Gelmini2019-08-308-8/+8
| | | | | | | Reviewed-by: Ryan Moeller <[email protected]> Reviewed-by: Richard Laager <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Andrea Gelmini <[email protected]> Closes #9232
* Minor style cleanupBrian Behlendorf2019-07-161-3/+6
| | | | | | | | | | Resolve an assortment of style inconsistencies including use of white space, typos, capitalization, and line wrapping. There is no functional change. Reviewed-by: Tony Hutter <[email protected]> Reviewed-by: George Melikov <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #9030
* Linux 5.0 compat: SIMD compatibilityBrian Behlendorf2019-07-121-5/+41
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Restore the SIMD optimization for 4.19.38 LTS, 4.14.120 LTS, and 5.0 and newer kernels. This is accomplished by leveraging the fact that by definition dedicated kernel threads never need to concern themselves with saving and restoring the user FPU state. Therefore, they may use the FPU as long as we can guarantee user tasks always restore their FPU state before context switching back to user space. For the 5.0 and 5.1 kernels disabling preemption and local interrupts is sufficient to allow the FPU to be used. All non-kernel threads will restore the preserved user FPU state. For 5.2 and latter kernels the user FPU state restoration will be skipped if the kernel determines the registers have not changed. Therefore, for these kernels we need to perform the additional step of saving and restoring the FPU registers. Invalidating the per-cpu global tracking the FPU state would force a restore but that functionality is private to the core x86 FPU implementation and unavailable. In practice, restricting SIMD to kernel threads is not a major restriction for ZFS. The vast majority of SIMD operations are already performed by the IO pipeline. The remaining cases are relatively infrequent and can be handled by the generic code without significant impact. The two most noteworthy cases are: 1) Decrypting the wrapping key for an encrypted dataset, i.e. `zfs load-key`. All other encryption and decryption operations will use the SIMD optimized implementations. 2) Generating the payload checksums for a `zfs send` stream. In order to avoid making any changes to the higher layers of ZFS all of the `*_get_ops()` functions were updated to take in to consideration the calling context. This allows for the fastest implementation to be used as appropriate (see kfpu_allowed()). The only other notable instance of SIMD operations being used outside a kernel thread was at module load time. This code was moved in to a taskq in order to accommodate the new kernel thread restriction. Finally, a few other modifications were made in order to further harden this code and facilitate testing. They include updating each implementations operations structure to be declared as a constant. And allowing "cycle" to be set when selecting the preferred ops in the kernel as well as user space. Reviewed-by: Tony Hutter <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #8754 Closes #8793 Closes #8965
* Fix dracut Debian/Ubuntu packagingloli10K2019-07-091-4/+4
| | | | | | | | | | | | This commit ensures make(1) targets that build .deb packages fail if alien(1) can't convert all .rpm files; additionally it also updates the zfs-dracut package name which was changed to "noarch" in ca4e5a7. Reviewed-by: Neal Gompa <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: Olaf Faaland <[email protected]> Signed-off-by: loli10K <[email protected]> Closes #8990 Closes #8991
* Python config cleanupRyan Moeller2019-06-132-79/+53
| | | | | | | | | | | Don't require Python at configure/build unless building pyzfs. Move ZFS_AC_PYTHON_MODULE to always-pyzfs.m4 where it is used. Make test syntax more consistent. Sponsored by: iXsystems, Inc. Reviewed-by: Neal Gompa <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Ryan Moeller <[email protected]> Closes #8895
* Allow TRIM_UNUSED_KSYM when build as a builtin-moduleTorsten Wörtwein2019-06-041-2/+3
| | | | | | | | If ZFS is built with enable_linux_builtin, it seems to be possible to compile the kernel with TRIM_UNUSED_KSYM. Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Torsten Wörtwein <[email protected]> Closes #8820
* Make Python detection optional and more portableRyan Moeller2019-06-042-22/+32
| | | | | | | | | | | | | | | | | | | | | Previously, --without-python would cause ./configure to fail. Now it is able to proceed, and the Python scripts will not be built. Use portable parameter expansion matching instead of nonstandard substring matching to detect the Python version. This test is duplicated in several places, so define a function for it. Don't assume the full path to binaries, since different platforms do install things in different places. Use AC_CHECK_PROGS instead. When building without Python, also build without pyzfs. Sponsored by: iXsystems, Inc. Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: Richard Laager <[email protected]> Reviewed-by: Eli Schwartz <[email protected]> Signed-off-by: Ryan Moeller <[email protected]> Closes #8809 Closes #8731
* Remove vn_set_fs_pwd()/vn_set_pwd() (no need to be at / during insmod)Tomohiro Kusumi2019-05-292-25/+0
| | | | | | | | | | | | | | | | | | Per suggestion from @behlendorf in #8777, remove vn_set_fs_pwd() and vn_set_pwd() which are only used in zfs_ioctl.c:_init() while loading zfs.ko. The rest of initialization functions being called here after cwd set to / don't depend on cwd of the process except for spa_config_load(). spa_config_load() uses a relative path ".//etc/zfs/zpool.cache" when `rootdir` is non-NULL, which is "/etc/zfs/zpool.cache" given cwd is /, so just unconditionally use the absolute path without "./", so that `vn_set_pwd("/")` as well as the entire functions can be removed. This is also what FreeBSD does. Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: Tony Hutter <[email protected]> Signed-off-by: Tomohiro Kusumi <[email protected]> Closes #8826
* Linux 5.2 compat: Fix config/kernel-shrink.m4 test failureTomohiro Kusumi2019-05-251-7/+15
| | | | | | | | | | | | "whether ->count_objects callback exists" test failed with "error: error" message for using an incomplete function shrinker_cb(). This is caused by torvalds/linux@83da1bed86. It's configurable, but we would want to be able to compile with default kbuild setting. Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: loli10K <[email protected]> Signed-off-by: Tomohiro Kusumi <[email protected]> Closes #8776
* Linux 5.2 compat: Remove config/kernel-set-fs-pwd.m4Tomohiro Kusumi2019-05-252-40/+0
| | | | | | | | | | | | | | | | This failed on 5.2-rc1 with "error: unknown" message, for set_fs_pwd() not being visible in both const and non-const tests. This is caused by torvalds/linux@83da1bed86. It's configurable, but we would want to be able to compile with default kbuild setting. set_fs_pwd() has never been exported with exception of some distro kernels, and set_fs_pwd() wasn't used in ZoL to begin with. The test result was used for a spl function vn_set_fs_pwd(). Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: loli10K <[email protected]> Signed-off-by: Tomohiro Kusumi <[email protected]> Closes #8777
* Linux 2.6.39 compat: Test if kstrtoul() existsTomohiro Kusumi2019-05-242-0/+22
| | | | | | | | | | | | | | | | | | | | | | | kstrtoul() exists only after torvalds/linux@33ee3b2e2eb9 in 2.6.39. Use strict_strtoul() if kstrtoul() doesn't exist. Note that strict_strtoul() has existed as an alias for kstrtoul() for a while, but removed in torvalds/linux@3db2e9cdc085. It looks like RHEL6 (2.6.32 based) has backported kstrtoul(), and this caused build CI to pass compilation test. It should fail on vanilla < 2.6.39 kernels or distro kernels without backport as reported in #8760. -- # grep "kstrtoul(" /lib/modules/2.6.32-754.12.1.el6.x86_64/build/ \ include/linux/kernel.h >/dev/null # echo $? 0 Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: loli10K <[email protected]> Signed-off-by: Tomohiro Kusumi <[email protected]> Closes #8760 Closes #8761
* kernel timer API reworkRafael Kitover2019-05-232-12/+53
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In `config/kernel-timer.m4` refactor slightly to check more generally for the new `timer_setup()` APIs, but also check the callback signature because some kernels (notably 4.14) have the new `timer_setup()` API but use the old callback signature. Also add a check for a `flags` member in `struct timer_list`, which was added in 4.1-rc8. Add compatibility shims to `include/spl/sys/timer.h` to allow using the new timer APIs with the only two caveats being that the callback argument type must be declared as `spl_timer_list_t` and an explicit assignment is required to get the timer variable for the `timer_of()` macro. So the callback would look like this: ```c __cv_wakeup(spl_timer_list_t t) { struct timer_list *tmr = (struct timer_list *)t; struct thing *parent = from_timer(parent, tmr, parent_timer_field); ... /* do stuff with parent */ ``` Make some minor changes to `spl-condvar.c` and `spl-taskq.c` to use the new timer APIs instead of conditional code. Reviewed-by: Tomohiro Kusumi <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Rafael Kitover <[email protected]> Closes #8647
* Linux 5.0 compat: Use totalhigh_pages()Tomohiro Kusumi2019-05-042-0/+20
| | | | | | | | | | | | | Linux kernel commit ca79b0c211af63fa3276f0e3fd7dd9ada2439839 "mm: convert totalram_pages and totalhigh_pages variables to atomic" replaced `totalhigh_pages` with an inline function `totalhigh_pages()`. This broke compilation on IA32, etc, as ZoL uses `totalhigh_pages` on archs with highmem. Confirmed on Fedora 30 (5.0.9-301.fc30.i686). Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Tomohiro Kusumi <[email protected]> Closes #8677 Closes #8701
* Prevent `make distclean` removing config/config.rpathTomohiro Kusumi2019-04-261-0/+1
| | | | | | | | | | | | | | | | | | | | | `make distclean` removes an empty file config/config.rpath. Avoid that by adding some text. Also see e1245d83e9("Prevent `make distclean` removing 0 sized file"). -- # find . -size 0 ./config/config.rpath # ./autogen.sh && ./configure # git diff # make distclean # git diff diff --git a/config/config.rpath b/config/config.rpath deleted file mode 100644 index e69de29bb..000000000 Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Tomohiro Kusumi <[email protected]> Closes #8665
* config: libintl/libiconv for gettext() detectionRafael Kitover2019-04-1913-0/+3163
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Detect in autoconf whether `-lintl` and possibly `-liconv` are necessary for translation functions like `gettext()`. The actual autoconf code is just: ``` AM_ICONV AM_GNU_GETTEXT([external]) LIBS="$LIBS $LTLIBINTL $LTLIBICONV" ``` References: https://www.gnu.org/software/gettext/manual/html_node/AM_005fGNU_005fGETTEXT.html https://www.gnu.org/software/gettext/manual/html_node/AM_005fICONV.html The reason to check for `libiconv` and add it separately is that this is sometimes necessary if users are linking statically. The `config/*.m4` files were added by running `gettextize` and removing everything else. The empty file `config/config.rpath` is necessary to avoid an error with some versions of autotools, see: http://ramblingfoo.blogspot.com/2007/07/required-file-configrpath-not-found.html The `config.rpath` copied by `gettextize` does not currently work, there is some kind of missing interaction with `libtool` and it tries to apply `libtool` flags to the compiler. Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: Richard Laager <[email protected]> Signed-off-by: Rafael Kitover <[email protected]> Closes #8554
* compile with -fno-omit-frame-pointerRichard Elling2019-04-143-0/+23
| | | | | | | | | | | | | | By default, depending on the version, gcc can reuse the frame pointer register. This is a micro-optimization that might help on some very old x86 processors. However, it also makes dynamic tracing less useful because the stacks cannot be easily observed. This rule change instructs gcc to use the -fno-omit-frame-pointer option when compiling. Reviewed-by: Olaf Faaland <[email protected]> Reviewed by: Brian Behlendorf <[email protected]> Signed-off-by: Richard Elling <[email protected]> Closes #8617
* Add TRIM supportBrian Behlendorf2019-03-292-0/+67
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | UNMAP/TRIM support is a frequently-requested feature to help prevent performance from degrading on SSDs and on various other SAN-like storage back-ends. By issuing UNMAP/TRIM commands for sectors which are no longer allocated the underlying device can often more efficiently manage itself. This TRIM implementation is modeled on the `zpool initialize` feature which writes a pattern to all unallocated space in the pool. The new `zpool trim` command uses the same vdev_xlate() code to calculate what sectors are unallocated, the same per- vdev TRIM thread model and locking, and the same basic CLI for a consistent user experience. The core difference is that instead of writing a pattern it will issue UNMAP/TRIM commands for those extents. The zio pipeline was updated to accommodate this by adding a new ZIO_TYPE_TRIM type and associated spa taskq. This new type makes is straight forward to add the platform specific TRIM/UNMAP calls to vdev_disk.c and vdev_file.c. These new ZIO_TYPE_TRIM zios are handled largely the same way as ZIO_TYPE_READs or ZIO_TYPE_WRITEs. This makes it possible to largely avoid changing the pipieline, one exception is that TRIM zio's may exceed the 16M block size limit since they contain no data. In addition to the manual `zpool trim` command, a background automatic TRIM was added and is controlled by the 'autotrim' property. It relies on the exact same infrastructure as the manual TRIM. However, instead of relying on the extents in a metaslab's ms_allocatable range tree, a ms_trim tree is kept per metaslab. When 'autotrim=on', ranges added back to the ms_allocatable tree are also added to the ms_free tree. The ms_free tree is then periodically consumed by an autotrim thread which systematically walks a top level vdev's metaslabs. Since the automatic TRIM will skip ranges it considers too small there is value in occasionally running a full `zpool trim`. This may occur when the freed blocks are small and not enough time was allowed to aggregate them. An automatic TRIM and a manual `zpool trim` may be run concurrently, in which case the automatic TRIM will yield to the manual TRIM. Reviewed-by: Jorgen Lundman <[email protected]> Reviewed-by: Tim Chase <[email protected]> Reviewed-by: Matt Ahrens <[email protected]> Reviewed-by: George Wilson <[email protected]> Reviewed-by: Serapheim Dimitropoulos <[email protected]> Contributions-by: Saso Kiselkov <[email protected]> Contributions-by: Tim Chase <[email protected]> Contributions-by: Chunwei Chen <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #8419 Closes #598
* kernel_fpu fixesTony Hutter2019-03-061-5/+29
| | | | | | | | | | | | | | This patch fixes a few issues when detecting which kernel_fpu functions are available. - Use kernel_fpu_begin() if it's exported on newer kernels. - Use ZFS_LINUX_TRY_COMPILE_SYMBOL() to choose the right kernel_fpu function when using --enable-linux-builtin. Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Tony Hutter <[email protected]> Closes #8259 Closes #8363
* config: better libtirpc detectionRafael Kitover2019-03-025-18/+428
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Improve the autoconf code for finding libtirpc and do not assume the headers are in /usr/include/tirpc. Also remove this assumption from the `rpc/xdr.h` header in libspl and use the same `#include_next` mechanism that is used for other libspl headers. Include pkg.m4 from pkg-config in config/ for PKG_CHECK_MODULES(), the file license allows this. Include ax_save_flags.m4 and ax_restore_flags.m4 from autoconf-archive, the file licenses are compatible. Use the 2012 versions so as not rely on a more recent autoconf feature AS_VAR_COPY(), which breaks some build slaves. Add new macro library `config/find_system_library.m4` which defines the FIND_SYSTEM_LIBRARY() macro which is a convenience wrapper over using PKG_CHECK_MODULES() with a fallback to standard library locations and some sanity checks. The parameters are: ``` FIND_SYSTEM_LIBRARY(VARIABLE-PREFIX, MODULE, HEADER, HEADER-PREFIXES, LIBRARY, FUNCTIONS, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND]) ``` `HEADER-PREFIXES` and `FUNCTIONS` are comma-separated m4 lists. For libtirpc we are using: ``` FIND_SYSTEM_LIBRARY(LIBTIRPC, [libtirpc], [rpc/xdr.h], [tirpc], [tirpc], [xdrmem_create], [], [...]) ``` The headers are first checked for without the prefixes and then with. This system works with pkg-config and falls back on checking standard header/library locations, it can be easily overridden by the user by setting the `PREFIX_CFLAGS` and `PREFIX_LIBS` variables which are automatically added to the `./configure --help` output. Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Rafael Kitover <[email protected]> Closes #7422 Closes #8313
* Linux 5.0 compat: Fix bio_set_dev()Brian Behlendorf2019-01-281-2/+33
| | | | | | | | | | | The Linux 5.0 kernel updated the bio_set_dev() macro so it calls the GPL-only bio_associate_blkg() symbol thus inadvertently converting the entire macro. Provide a minimal version which always assigns the request queue's root_blkg to the bio. Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #8287
* Linux 5.0 compat: Disable vector instructions on 5.0+ kernelsTony Hutter2019-01-281-9/+32
| | | | | | | | | | The 5.0 kernel no longer exports the functions we need to do vector (SSE/SSE2/SSE3/AVX...) instructions. Disable vector-based checksum algorithms when building against those kernels. Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Tony Hutter <[email protected]> Closes #8259
* Linux 5.0 compat: Use totalram_pages()Tony Hutter2019-01-282-0/+19
| | | | | | | | | | | | | totalram_pages() was converted to an atomic variable in 5.0: https://patchwork.kernel.org/patch/10652795/ Its value should now be read though the totalram_pages() helper function. Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Tony Hutter <[email protected]> Closes #8263
* Linux 5.0 compat: access_ok() drops 'type' parameterTony Hutter2019-01-282-0/+22
| | | | | | | | access_ok no longer needs a 'type' parameter in the 5.0 kernel. Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Tony Hutter <[email protected]> Closes #8261
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