Modern GCC and Clang versions can generate .d files without needing the
complex sequence of sed scripts that we currently use.
Also adjust the .o rule so the .d file is regenerated if it gets
deleted.
Also make the .o depend on all of the Makefile fragments in
$(MAKEFILE_LIST) so that it is rebuilt if the Makefile is changed.
Change-Id: I44e186c0f34dabfa0cf35db1ffa66b84d9dae87d
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Remove the $generatedby string, which contains the current date, causing
diffs whenever the docs are regenerated even if there is no new content.
Change-Id: I2a45a086d464bb23cac4b9ffc802666722c45d06
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
nvme_ctrlr_process_io_completions() now takes a second parameter,
max_completions, to let the user limit the number of I/Os completed on
each poll.
If there are many I/Os waiting to be completed, the
nvme_ctrlr_process_io_completions() function could run for a long time
before returning control to the user, so the max_completions parameter
lets the user have more control of latency.
Change-Id: I3173059d94ec1cc5dbb636fc0ffd3dc09f3bfe4b
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
After converting is_resetting to bool, it is smaller and can be packed
more efficiently with is_failed and reordered after the larger fields
used in the I/O path.
Change-Id: Ifa2301eb61ce8d38eb5412cca61d2a91b1474101
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
It was previously uint32_t because it was accessed with special
uint32_t-only atomic read/write helper functions, but that was replaced
with normal variable accesses protected by a mutex.
Change-Id: I304a7ef8c723cb33fd08110b697f848823a163e7
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
We don't use any C11-specific features, and switching to C99 will allow
us to support older versions of GCC.
In particular, the version of GCC used by Travis CI is too old to
support -std=gnu11.
Change-Id: Id5bd8351fdd83e7f4b6703048a921c78c3f06ec6
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Previously, the I/O splitting code and child I/O completion were not
being tested (aside from in the unit tests).
Tweak the I/O size so that it will get split into two child I/Os on
devices with 128 KB striping.
This causes nvme_cb_complete_child() to be exercised, improving code
coverage.
Change-Id: Ia0299f7f809f8edb93452b5ad45939977a9f67f1
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Use the container-based travis-ci.org infrastructure to run only the unit
tests.
Change-Id: I4f7d011edb07341a668fa6fea495f6eb2a9c029b
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Set SPDK_ROOT_DIR explicitly in each Makefile so that make from a
subdirectory will work (assuming all dependencies from the upper
directory have already been built). This allows partial rebuilds of the
source tree, as well as building the unit tests without requiring DPDK.
Change-Id: I3f65b805d490b40ff5ec53cceb61df542ce814f1
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Previously, as soon as a worker thread failed, the program would exit
before printing results.
Also add a message at exit time if any errors occurred during test
execution.
Change-Id: I7b3920f0acb8ce364e2bc5cbb78bbe88f3fa7146
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
This matches the size of the request pool and enables running with a
higher concurrency level.
Ideally, these limits should be calculated from the requested queue
depth and number of workers, but for now, just increase the hardcoded
limit.
Change-Id: I6e890efc78a1336dddc0ab61db20c68004b30f54
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Previously, if the work function on the master lcore failed, the perf
program would still return with a successful exit code.
Change-Id: Iec91c1f60824759ae62476ef6dce670fd402ddc5
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Do not continue running the thread work function if that thread could
not get an I/O queue.
Change-Id: I89033250bde0663f073ff35c76d1558d55b72ece
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
This will allow us to figure out which test machines actually executed
each path when the results are combined.
Change-Id: I965fed0153f5d28aa8a0ff5e0d02fed19b49003d
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
With a reasonably fast machine, the full build can take less than a
second.
Make sure that at least one second has passed so the stat output will
differ when testing Makefile dependencies.
Change-Id: I462944d00c9c2ace2f6a1a7d6dadec4f77c25784
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Intelligently allocate cores and devices to handle
the following cases:
1) Equal cores and devices
2) More cores than devices by using multiple cores per device
3) More devices than cores by using multiple devices from a single core
Change-Id: I3703f5c523268539bd00d399fe104c474a8e8c99
Signed-off-by: Ben Walker <benjamin.walker@intel.com>
This partially reverts commit fd93c1b1ef.
Older versions of GCC don't consider the empty initializer to be
acceptable when this warning is turned on.
Change-Id: I5c1c22ca988f464990c68eb56e4dd4d51cb99410
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
This catches functions with empty parameter lists, which are not the
same as void parameter lists in C, as well as other (less-likely)
K&R-style parameter lists.
Change-Id: I18b09e01a60b3669d1cc5d8d96eec20cd872c497
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
This helps weed out functions that should be static, functions that are
not declared in public header files, and .c files that don't include
their .h interface headers.
Change-Id: Ie39f83ad4b320847e4a938bd1d4d0b4fa21c2ffa
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
-Wold-style-declaration, -Wsign-compare, and
-Wmissing-field-initializers are included in -Wextra.
-Wunused-parameter is not very useful, so disable that explicitly, but
enable the rest of -Wextra.
Change-Id: I034b368d16306544e0eadafab9ec1ccf27f21645
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Replace {0} initializers with {}, since it is equivalent and simpler
(and avoids the warning).
Change-Id: Id2014a352e2c627598cd3b4f1ca04dba35f2dc3a
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Fix all of the uses of __thread so they are at the beginning (similar to
e.g. static).
Don't actually enable -Wold-style-declaration, since clang doesn't
understand that.
Change-Id: I0dcbb758143eab90fc978334c8f256c6602cc4cd
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Collect coverage information for use with gcov.
Coverage is disabled on FreeBSD because the current version of clang
provided by FreeBSD can't successfully link with -ftest-coverage enabled
(the compiler-rt support libs are too old).
Change-Id: Icc444936caa852bfb9a02b37223209319a27a770
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
The ioctl() calls in dev_get_blocklen() were checking for != 0 instead
of == 0, so the default path (512) was always being taken.
Change-Id: Ib0b016b1d453fb94d408063417b7485ff24ed220
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
This allows comparing the Linux kernel driver's performance to the SPDK
user-mode NVMe driver.
Change-Id: I71c70163a4133c2f237c8c57b3c698ec261455f5
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Rename the nvme_free_request macro to nvme_dealloc_request to match
nvme_alloc_request and add a wrapper function to nvme.c so that the
macro contents are only expanded once.
The DPDK nvme_impl.h uses rte_mempool_put(), which generates a large
amount of code inline. Moving this macro expansion to a wrapper
function avoids inlining it in the multiple places nvme_free_request()
gets called, most of which are error handling cases that are not in the
hot I/O path.
Change-Id: I64ea9c39ba47e26672eee8d5058f1489e07eee5b
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
The I/O splitting tests don't pass the I/Os through the normal
completion path, so we need to free the children ourselves.
Fixes all Valgrind warnings for nvme_ns_cmd_ut.
Change-Id: Iaf7d9f7f4cab71428a0123ee30d0f6042001e423
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
This allows the same objects to be linked into static and shared
libraries and allows the creation of position-independent executables
with the static libraries.
Change-Id: I119949c3644c02a83e414227615dcc2d8f896286
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Some of these are covered under -Wall, but add them all just to be clear.
Change-Id: I63104be4bf58becd19a4c30a4d275d2c24c6761d
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Modern toolchains already enable noexecstack by default, but set it
explicitly just to be sure.
Change-Id: I2866220db5a5ed0bb6e78a4e83763839ea3b93b0
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
This forces the ELF loader to resolve all relocations immediately at
load time rather than allowing lazy binding.
Therefore the loader can make the GOT (global offset table) read-only
once the relocations are complete during the loading process.
Change-Id: I89a878d1060ce79d58c5be7700d8b122a33a8ceb
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
This is generated by the CUnit library when built with
--enable-memtrace.
In particular, the CUnit package on FreeBSD is configured this way.
Change-Id: I616b7d91ed560be2706089287510a772a5c47e11
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Like sprintf() with automatic buffer allocation.
This should help to avoid fixed-size buffers in
non-performance-sensitive code that formats strings.
Change-Id: I35209ae84014ed5daf41baa5b03af8a5f6b02b8e
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
nvme_ut is testing multi-threaded operations, and Valgrind's thread
behavior is different than running the program natively. Under
Valgrind, the unit test essentially hangs waiting for the global
variable to be updated.
Change-Id: Id3665002c16ac3e695c50325375305a76f72cee4
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
