Commit Graph

16925 Commits

Author SHA1 Message Date
Bruce Richardson
e9c6594264 examples: detect default build directory
Most examples have in their makefiles a default RTE_TARGET directory to be
used in case RTE_TARGET is not set. Rather than just using a hard-coded
default, we can instead detect what the build directory is relative to
RTE_SDK directory.

This fixes a potential issue for anyone who continues to build using
"make install T=x86_64-native-linuxapp-gcc" and skips setting RTE_TARGET
explicitly, instead relying on the fact that they were building in a
directory which corresponded to the example default path - which was
changed to "x86_64-native-linux-gcc" by commit 218c4e68c1 ("mk: use
linux and freebsd in config names").

Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Acked-by: Ferruh Yigit <ferruh.yigit@intel.com>
2019-03-30 01:12:15 +01:00
Liron Himi
ff1e35fb5f kni: calculate MTU from mbuf size
- mbuf_size and mtu are now being calculated according
to the given mb-pool.

- max_mtu is now being set according to the given mtu

the above two changes provide the ability to work with jumbo frames

Signed-off-by: Liron Himi <lironh@marvell.com>
Acked-by: Ferruh Yigit <ferruh.yigit@intel.com>
2019-03-30 00:59:59 +01:00
Anatoly Burakov
23d5455517 mem: warn user when running without NUMA support
Running in non-legacy mode on a NUMA-enabled system without libnuma
is unsupported, so explicitly print out a warning when trying to
do so.

Running in legacy mode without libnuma is still supported whether or
not we are running with libnuma support enabled, so also fix init to
allow that scenario.

Cc: stable@dpdk.org

Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>
2019-03-30 00:13:04 +01:00
David Marchand
76f8486e16 ci: fix arm64 config filename
The ARM64 config file has been renamed in the commit
ae2f2fee24 ("build: rename linuxapp to linux in meson cross files").

Fixes: 99889bd852 ("ci: introduce Travis builds for GitHub repositories")

Signed-off-by: David Marchand <david.marchand@redhat.com>
Acked-by: Aaron Conole <aconole@redhat.com>
2019-03-30 00:01:35 +01:00
Lukasz Krakowiak
d7b713d0dc power: add some logs on requests
Extend debugs on power instruction and cmd police destroy
requests.

Signed-off-by: Lukasz Krakowiak <lukaszx.krakowiak@intel.com>
2019-03-29 23:29:21 +01:00
Lukasz Krakowiak
1b89799147 power: update error handling
Update for handling negative returned status from functions
call.

Signed-off-by: Lukasz Krakowiak <lukaszx.krakowiak@intel.com>
Acked-by: Anatoly Burakov <anatoly.burakov@intel.com>
2019-03-29 15:29:31 +01:00
Kevin Traynor
e1e4dafbc7 power: fix frequency list buffer validation
The frequency list buffer was already validated in
power_acpi_cpufreq_freqs(), so the newly added check was redundant.
To keep consistency with power_pstate_cpufreq_freqs(), remove the
original check and update the log message.

Fixes: 2e6ccdb4e0 ("power: fix frequency list to handle null buffer")
Cc: stable@dpdk.org

Signed-off-by: Kevin Traynor <ktraynor@redhat.com>
2019-03-29 14:58:27 +01:00
Hemant Agrawal
6a556bd6ca net/dpaa2: support flow table flush
Signed-off-by: Hemant Agrawal <hemant.agrawal@nxp.com>
2019-03-29 14:38:06 +01:00
Hemant Agrawal
4762b3d419 bus/dpaa: delay fman device list to bus probe
The fman device list need to be accessed across processes.
The hw device structures should be allocated with rte_calloc
instead of calloc. The rte_calloc is not available at the
time of bus scan, so better prepare the device list at probe.

Signed-off-by: Hemant Agrawal <hemant.agrawal@nxp.com>
2019-03-29 14:37:45 +01:00
Akhil Goyal
e1797f4b44 mempool/dpaa: allocate bp info for multiprocess
rte_dpaa_bpid_info shall be allocated with the hugepage memory
which can be shared across processes.

Signed-off-by: Akhil Goyal <akhil.goyal@nxp.com>
2019-03-29 14:36:39 +01:00
Akhil Goyal
4bbc759f53 bus/dpaa: save fq lookup table for secondary process
A reference to qman_fq_lookup_table need to be saved in each
fq, so that it is retrieved while in running secondary process.

Signed-off-by: Akhil Goyal <akhil.goyal@nxp.com>
2019-03-29 14:33:23 +01:00
Shreyansh Jain
6880caed6b bus/dpaa: fix Rx discard register mask
Current value of 'fmbm_rfsdm' register (0x010CE3F0) doesn't include
the bit to drop colored (red) packets. New value (0x010EE3F0) fixes
this.
Check with 'fmbm_rffc' register of fm_port_bmi_regs.

Fixes: 6d6b4f49a1 ("bus/dpaa: add FMAN hardware operations")
Cc: stable@dpdk.org

Signed-off-by: Shreyansh Jain <shreyansh.jain@nxp.com>
2019-03-29 14:33:21 +01:00
Stephen Hemminger
4764beda0d bus/fslmc: remove unneeded strdup
The fslmc bus code was duplicating the device name and
doing extra initialization. The code can be simplified
to just use the device name directly.

Compile tested only; do not have this hardware.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Acked-by: Hemant Agrawal <hemant.agrawal@nxp.com>
2019-03-29 13:55:58 +01:00
Stephen Hemminger
a6ffe11b72 bus/fslmc: decrease log level for unsupported devices
When fslmc is built as part of a general distribution, the
bus code will log errors when other devices are present.

This could confuse users it is not an error.

Fixes: 50245be05d ("bus/fslmc: support device blacklisting")
Cc: stable@dpdk.org

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Acked-by: Hemant Agrawal <hemant.agrawal@nxp.com>
Acked-by: Ilya Maximets <i.maximets@samsung.com>
2019-03-29 13:53:10 +01:00
Stephen Hemminger
2b9cee18d6 net/netvsc: remove unnecessary format of MAC address
The ethernet address was being converted to a string but
the code using that is no longer present.

Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
2019-03-29 13:44:49 +01:00
Stephen Hemminger
2528d17199 bus/vmbus: refactor secondary mapping
The secondary mapping function was duplicating the code
used to search the uio_resource list.

Skip the unwinding since map failure already makes device
unusable.

Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
2019-03-29 13:44:36 +01:00
Stephen Hemminger
2a28a502c6 bus/vmbus: map ring in secondary process
Need to remember primary channel in secondary process.
Then use it to iterate over subchannels in secondary
process mapping setup.

Fixes: 831dba47bd ("bus/vmbus: add Hyper-V virtual bus support")
Cc: stable@dpdk.org

Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
2019-03-29 13:44:19 +01:00
Stephen Hemminger
41a7f8cbee bus/vmbus: stop mapping if empty resource found
If vmbus is run on older kernel (without all the uio mappings),
then the bus driver should stop when it hits the missing mappings
rather than recording the empty values.

Fixes: 831dba47bd ("bus/vmbus: add Hyper-V virtual bus support")
Cc: stable@dpdk.org

Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
2019-03-29 13:44:10 +01:00
Stephen Hemminger
3f9277031a bus/vmbus: fix check for mmap failure
The code was testing the result of mmap incorrectly.
I.e the test that a local pointer is not MAP_FAILED would
always succeed and therefore hid any potential problems.

Fixes: 831dba47bd ("bus/vmbus: add Hyper-V virtual bus support")
Cc: stable@dpdk.org

Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
2019-03-29 13:44:02 +01:00
Stephen Hemminger
4a9efcddad net/netvsc: fix VF support with secondary process
The VF device management in netvsc was using a pointer to the
rte_eth_devices. But the actual rte_eth_devices array is likely to
be place in the secondary process; which causes a crash.

The solution is to record the port of the VF (instead of a pointer)
and find the device in the per process array as needed.

Fixes: dc7680e859 ("net/netvsc: support integrated VF")
Cc: stable@dpdk.org

Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
2019-03-29 13:43:55 +01:00
Stephen Hemminger
fc20b5809d bus/vmbus: fix secondary process setup
The secondary process doesn't correctly map the second
and later resources because it doesn't change the offset.

Fixes: 831dba47bd ("bus/vmbus: add Hyper-V virtual bus support")
Cc: stable@dpdk.org

Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
2019-03-29 13:43:45 +01:00
Anatoly Burakov
3660216ef1 malloc: fix IPC message initialization
The memset size for an IPC message is set incorrectly. Fix it to
cover the entire IPC message.

Fixes: 07dcbfe010 ("malloc: support multiprocess memory hotplug")
Cc: stable@dpdk.org

Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>
2019-03-29 12:55:07 +01:00
Anatoly Burakov
b8a86c83e0 fbarray: fix init unlock without lock
Certain failure paths of rte_fbarray_init() will unlock the
mem area lock without locking it first. Fix this by properly
handling the failures.

Fixes: 5b61c62cfd ("fbarray: add internal tailq for mapped areas")

Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>
2019-03-29 12:49:35 +01:00
Darek Stojaczyk
5a98bc5e83 fbarray: fix attach deadlock
rte_fbarray_attach() currently locks its internal
spinlock, but never releases it. Secondary processes
won't even start if there is more than one fbarray
to be attached to - the second rte_fbarray_attach()
would be just stuck.

Fix it by releasing the lock at the end of
rte_fbarray_attach(). I believe this was the original
intention.

Fixes: 5b61c62cfd ("fbarray: add internal tailq for mapped areas")

Signed-off-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com>
Reviewed-by: Gavin Hu <gavin.hu@arm.com>
Acked-by: Anatoly Burakov <anatoly.burakov@intel.com>
2019-03-29 12:49:35 +01:00
Stephen Hemminger
c6b5715746 drivers: fix SPDX license id consistency
All drivers should have SPDX on the first line of the source
files in the format
  /* SPDX-License-Identifier: ...

Several files used minor modifications which were inconsistent
with the pattern. Fix it to make scanning tools easier.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
2019-03-29 00:15:53 +01:00
Anatoly Burakov
1fd3bcf3f9 vfio: document multiprocess limitation for container API
Currently, there is no support for sharing custom VFIO containers
between multiple processes, but it is not documented.

Document this limitation.

Cc: stable@dpdk.org

Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>
2019-03-29 00:07:16 +01:00
Thomas Monjalon
3a1a885e03 eal: remove redundant atomic API description
Atomic functions are described in doxygen of the file
lib/librte_eal/common/include/generic/rte_atomic.h
The copies in arch-specific files are redundant
and confuse readers about the genericity of the API.

Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
Acked-by: Shahaf Shuler <shahafs@mellanox.com>
2019-03-28 23:52:53 +01:00
Dekel Peled
8015c5593a eal/ppc: fix global memory barrier
From previous patch description: "to improve performance on PPC64,
use light weight sync instruction instead of sync instruction."

Excerpt from IBM doc [1], section "Memory barrier instructions":
"The second form of the sync instruction is light-weight sync,
or lwsync.
This form is used to control ordering for storage accesses to system
memory only. It does not create a memory barrier for accesses to
device memory."

This patch removes the use of lwsync, so calls to rte_wmb() and
rte_rmb() will provide correct memory barrier to ensure order of
accesses to system memory and device memory.

[1] https://www.ibm.com/developerworks/systems/articles/powerpc.html

Fixes: d23a6bd04d ("eal/ppc: fix memory barrier for IBM POWER")
Cc: stable@dpdk.org

Signed-off-by: Dekel Peled <dekelp@mellanox.com>
2019-03-28 23:48:28 +01:00
Michał Mirosław
a1c6b70786 mem: count overcommit hugepages as available
With nr_overcommit_hugepages > 0 application may be able to allocate
hugepages even when free_hugepages == 0. Take this into account when
counting available hugepages.

Signed-off-by: Michał Mirosław <michal.miroslaw@atendesoftware.pl>
Reviewed-by: Anatoly Burakov <anatoly.burakov@intel.com>
2019-03-28 23:33:50 +01:00
Anatoly Burakov
034f1fb616 mem: attempt multiple hugepage allocations at init
When requesting memory with ``-m`` or ``--socket-mem`` flags,
currently the init will fail if the requested memory amount was
bigger than any one memseg list, even if total amount of
available memory was sufficient.

Fix this by making EAL to attempt to allocate pages multiple
times, until we either fulfill our memory requirements, or run
out of hugepages to allocate.

Bugzilla ID: 95

Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>
2019-03-28 23:28:58 +01:00
Anatoly Burakov
bec5625588 mem: improve best-effort allocation
Previously, when using non-exact allocation, we were requesting
N pages to be allocated, but allowed the memory subsystem to
allocate less than requested. However, we were still expecting
to see N contigous free pages in the memseg list.

This presents a problem because there is no way to try and
allocate as many pages as possible, even if there isn't
enough contiguous free entries in the list.

To address this, use the new "find biggest" fbarray API's when
allocating non-exact number of pages. This way, we will first
check how many entries in the list are actually available, and
then try to allocate up to that number.

Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>
2019-03-28 23:28:54 +01:00
Anatoly Burakov
7353ee7344 fbarray: add API to find biggest used or free chunks
Currently, while there is a way to find total amount of used/free
space in an fbarray, there is no way to find biggest contiguous
chunk. Add such API, as well as unit tests to test this API.

Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>
2019-03-28 23:28:52 +01:00
Anatoly Burakov
5b61c62cfd fbarray: add internal tailq for mapped areas
Currently, there are numerous reliability issues with fbarray,
such as:
- There is no way to prevent attaching to overlapping memory
  areas
- There is no way to prevent double-detach
- Failed destroy leaves fbarray in an invalid state (fbarray
  itself is valid, but its backing memory area is already
  detached)

In addition, on FreeBSD, doing mmap() on a file descriptor
does not keep the lock, so we also need to store the fd
in order to keep the lock.

This patch improves upon fbarray to address both of these
issues by adding an internal tailq to track allocated areas
and their respective file descriptors.

Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>
2019-03-28 23:28:50 +01:00
Nikhil Rao
db9f4430c2 service: fix parameter type for attribute
The type of value parameter to rte_service_attr_get
should be uint64_t *, since the attributes
are of type uint64_t.

Fixes: 4d55194d76 ("service: add attribute get function")

Signed-off-by: Nikhil Rao <nikhil.rao@intel.com>
Reviewed-by: Gage Eads <gage.eads@intel.com>
Reviewed-by: Rami Rosen <ramirose@gmail.com>
Acked-by: Harry van Haaren <harry.van.haaren@intel.com>
2019-03-28 21:07:48 +01:00
Ruifeng Wang
90fefe78bf hash: optimize signature compare for Arm NEON
Implemented signature compare function based on neon intrinsic.
Hash bulk lookup had 3% - 6% performance gain after optimization.

Signed-off-by: Ruifeng Wang <ruifeng.wang@arm.com>
Reviewed-by: Gavin Hu <gavin.hu@arm.com>
Acked-by: Yipeng Wang <yipeng1.wang@intel.com>
Acked-by: Jerin Jacob <jerinj@marvell.com>
2019-03-28 19:54:21 +01:00
Dharmik Thakkar
1ae40fdb8a test/timer: replace config macro with runtime log level
This patch replaces macro with log-level based approach to print debug
information. Need to set timer log type to debug  using the following
eal parameter: --log-level=test.timer:debug

Suggested-by: Thomas Monjalon <thomas@monjalon.net>
Signed-off-by: Dharmik Thakkar <dharmik.thakkar@arm.com>
Reviewed-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>
Reviewed-by: Gavin Hu <gavin.hu@arm.com>
Reviewed-by: Phil Yang <phil.yang@arm.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
2019-03-28 19:39:13 +01:00
Dharmik Thakkar
9038ea4674 test/efd: replace config macro with runtime log level
This patch enables compilation of print_key_info() always using
log-level based approach instead of a macro. Need to set efd log type
to debug to print debug information, using the following eal parameter:
--log-level=test.efd:debug

Suggested-by: Thomas Monjalon <thomas@monjalon.net>
Signed-off-by: Dharmik Thakkar <dharmik.thakkar@arm.com>
Reviewed-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>
Reviewed-by: Gavin Hu <gavin.hu@arm.com>
Reviewed-by: Phil Yang <phil.yang@arm.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
2019-03-28 19:38:52 +01:00
Dharmik Thakkar
54e5545d33 test/hash: replace config macro with runtime log level
Need to set hash log type to debug to print debug information, using
following eal parameter: --log-level=test.hash:debug

Suggested-by: Thomas Monjalon <thomas@monjalon.net>
Signed-off-by: Dharmik Thakkar <dharmik.thakkar@arm.com>
Reviewed-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>
Reviewed-by: Gavin Hu <gavin.hu@arm.com>
Reviewed-by: Phil Yang <phil.yang@arm.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
2019-03-28 19:37:41 +01:00
Joyce Kong
efbcdaa55b test/ticketlock: add test cases
Add test cases for ticket lock, recursive ticket lock,
and ticket lock performance.

Signed-off-by: Joyce Kong <joyce.kong@arm.com>
Reviewed-by: Gavin Hu <gavin.hu@arm.com>
Reviewed-by: Phil Yang <phil.yang@arm.com>
Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
2019-03-28 15:02:10 +01:00
Joyce Kong
ca49b92079 ticketlock: enable generic ticketlock on all arch
Let all architectures use generic ticketlock implementation.

Signed-off-by: Joyce Kong <joyce.kong@arm.com>
Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
2019-03-28 15:00:11 +01:00
Joyce Kong
184104fc61 ticketlock: introduce fair ticket based locking
The spinlock implementation is unfair, some threads may take locks
aggressively while leaving the other threads starving for long time.

This patch introduces ticketlock which gives each waiting thread a
ticket and they can take the lock one by one. First come, first serviced.
This avoids starvation for too long time and is more predictable.

Suggested-by: Jerin Jacob <jerinj@marvell.com>
Signed-off-by: Joyce Kong <joyce.kong@arm.com>
Reviewed-by: Gavin Hu <gavin.hu@arm.com>
Reviewed-by: Ola Liljedahl <ola.liljedahl@arm.com>
Reviewed-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>
Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
2019-03-28 14:58:49 +01:00
Joyce Kong
6fef1ae4fc test/rwlock: amortize the cost of getting time
Instead of getting timestamp per iteration, amortize its
overhead can help to get more precise benchmarking results.

Fixes: af75078fec ("first public release")
Cc: stable@dpdk.org

Signed-off-by: Joyce Kong <joyce.kong@arm.com>
Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
2019-03-28 11:49:36 +01:00
Joyce Kong
fe252fb695 test/rwlock: benchmark on all available cores
Add performance test on all available cores to benchmark
the scaling up performance of rw_lock.

Fixes: af75078fec ("first public release")
Cc: stable@dpdk.org

Suggested-by: Gavin Hu <gavin.hu@arm.com>
Signed-off-by: Joyce Kong <joyce.kong@arm.com>
Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
2019-03-28 11:47:19 +01:00
Joyce Kong
e8af2f1f11 rwlock: reimplement with atomic builtins
The __sync builtin based implementation generates full memory
barriers ('dmb ish') on Arm platforms. Using C11 atomic builtins
to generate one way barriers.

Here is the assembly code of __sync_compare_and_swap builtin.
__sync_bool_compare_and_swap(dst, exp, src);
   0x000000000090f1b0 <+16>:    e0 07 40 f9 ldr x0, [sp, #8]
   0x000000000090f1b4 <+20>:    e1 0f 40 79 ldrh    w1, [sp, #6]
   0x000000000090f1b8 <+24>:    e2 0b 40 79 ldrh    w2, [sp, #4]
   0x000000000090f1bc <+28>:    21 3c 00 12 and w1, w1, #0xffff
   0x000000000090f1c0 <+32>:    03 7c 5f 48 ldxrh   w3, [x0]
   0x000000000090f1c4 <+36>:    7f 00 01 6b cmp w3, w1
   0x000000000090f1c8 <+40>:    61 00 00 54 b.ne    0x90f1d4
<rte_atomic16_cmpset+52>  // b.any
   0x000000000090f1cc <+44>:    02 fc 04 48 stlxrh  w4, w2, [x0]
   0x000000000090f1d0 <+48>:    84 ff ff 35 cbnz    w4, 0x90f1c0
<rte_atomic16_cmpset+32>
   0x000000000090f1d4 <+52>:    bf 3b 03 d5 dmb ish
   0x000000000090f1d8 <+56>:    e0 17 9f 1a cset    w0, eq  // eq = none

Fixes: af75078fec ("first public release")
Cc: stable@dpdk.org

Signed-off-by: Gavin Hu <gavin.hu@arm.com>
Signed-off-by: Joyce Kong <joyce.kong@arm.com>
Tested-by: Joyce Kong <joyce.kong@arm.com>
Acked-by: Jerin Jacob <jerinj@marvell.com>
Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
2019-03-28 11:47:05 +01:00
Gavin Hu
453d8f7366 spinlock: reimplement with atomic one-way barrier
The __sync builtin based implementation generates full memory barriers
('dmb ish') on Arm platforms. Using C11 atomic builtins to generate one way
barriers.

Here is the assembly code of __sync_compare_and_swap builtin.
__sync_bool_compare_and_swap(dst, exp, src);
   0x000000000090f1b0 <+16>:    e0 07 40 f9 ldr x0, [sp, #8]
   0x000000000090f1b4 <+20>:    e1 0f 40 79 ldrh    w1, [sp, #6]
   0x000000000090f1b8 <+24>:    e2 0b 40 79 ldrh    w2, [sp, #4]
   0x000000000090f1bc <+28>:    21 3c 00 12 and w1, w1, #0xffff
   0x000000000090f1c0 <+32>:    03 7c 5f 48 ldxrh   w3, [x0]
   0x000000000090f1c4 <+36>:    7f 00 01 6b cmp w3, w1
   0x000000000090f1c8 <+40>:    61 00 00 54 b.ne    0x90f1d4
<rte_atomic16_cmpset+52>  // b.any
   0x000000000090f1cc <+44>:    02 fc 04 48 stlxrh  w4, w2, [x0]
   0x000000000090f1d0 <+48>:    84 ff ff 35 cbnz    w4, 0x90f1c0
<rte_atomic16_cmpset+32>
   0x000000000090f1d4 <+52>:    bf 3b 03 d5 dmb ish
   0x000000000090f1d8 <+56>:    e0 17 9f 1a cset    w0, eq  // eq = none

The benchmarking results showed constant improvements on all available
platforms:
1. Cavium ThunderX2: 126% performance;
2. Hisilicon 1616: 30%;
3. Qualcomm Falkor: 13%;
4. Marvell ARMADA 8040 with A72 cores on macchiatobin: 3.7%

Here is the example test result on TX2:
$sudo ./build/app/test -l 16-27 -- i
RTE>>spinlock_autotest

*** spinlock_autotest without this patch ***
Test with lock on 12 cores...
Core [16] Cost Time = 53886 us
Core [17] Cost Time = 53605 us
Core [18] Cost Time = 53163 us
Core [19] Cost Time = 49419 us
Core [20] Cost Time = 34317 us
Core [21] Cost Time = 53408 us
Core [22] Cost Time = 53970 us
Core [23] Cost Time = 53930 us
Core [24] Cost Time = 53283 us
Core [25] Cost Time = 51504 us
Core [26] Cost Time = 50718 us
Core [27] Cost Time = 51730 us
Total Cost Time = 612933 us

*** spinlock_autotest with this patch ***
Test with lock on 12 cores...
Core [16] Cost Time = 18808 us
Core [17] Cost Time = 29497 us
Core [18] Cost Time = 29132 us
Core [19] Cost Time = 26150 us
Core [20] Cost Time = 21892 us
Core [21] Cost Time = 24377 us
Core [22] Cost Time = 27211 us
Core [23] Cost Time = 11070 us
Core [24] Cost Time = 29802 us
Core [25] Cost Time = 15793 us
Core [26] Cost Time = 7474 us
Core [27] Cost Time = 29550 us
Total Cost Time = 270756 us

In the tests on ThunderX2, with more cores contending, the performance gain
was even higher, indicating the __atomic implementation scales up better
than __sync.

Fixes: af75078fec ("first public release")
Cc: stable@dpdk.org

Signed-off-by: Gavin Hu <gavin.hu@arm.com>
Reviewed-by: Phil Yang <phil.yang@arm.com>
Reviewed-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>
Reviewed-by: Ola Liljedahl <ola.liljedahl@arm.com>
Reviewed-by: Steve Capper <steve.capper@arm.com>
Reviewed-by: Jerin Jacob <jerinj@marvell.com>
Acked-by: Nipun Gupta <nipun.gupta@nxp.com>
Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
2019-03-28 09:19:39 +01:00
Gavin Hu
a52c5530d8 test/spinlock: amortize the cost of getting time
Instead of getting timestamps per iteration, amortize its overhead
can help getting more precise benchmarking results.

Fixes: af75078fec ("first public release")
Cc: stable@dpdk.org

Signed-off-by: Gavin Hu <gavin.hu@arm.com>
Reviewed-by: Joyce Kong <joyce.kong@arm.com>
Reviewed-by: Ruifeng Wang <ruifeng.wang@arm.com>
Reviewed-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>
Acked-by: Nipun Gupta <nipun.gupta@nxp.com>
Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
2019-03-28 09:18:59 +01:00
Gavin Hu
9119ad305d test/spinlock: remove delay for correct benchmarking
The test is to benchmark the performance of spinlock by counting the
number of spinlock acquire and release operations within the specified
time.
A typical pair of lock and unlock operations costs tens or hundreds of
nano seconds, in comparison to this, delaying 1 us outside of the locked
region is too much, compromising the goal of benchmarking the lock and
unlock performance.

Fixes: af75078fec ("first public release")
Cc: stable@dpdk.org

Signed-off-by: Gavin Hu <gavin.hu@arm.com>
Reviewed-by: Ruifeng Wang <ruifeng.wang@arm.com>
Reviewed-by: Joyce Kong <joyce.kong@arm.com>
Reviewed-by: Phil Yang <phil.yang@arm.com>
Reviewed-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>
Reviewed-by: Ola Liljedahl <ola.liljedahl@arm.com>
Acked-by: Jerin Jacob <jerinj@marvell.com>
Acked-by: Nipun Gupta <nipun.gupta@nxp.com>
Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
2019-03-28 09:17:49 +01:00
Gavin Hu
85cffb2ecc ring: enforce reading tail before slots
In weak memory models, like arm64, reading the prod.tail may get
reordered after reading the ring slots, which corrupts the ring and
stale data is observed.

This issue was reported by NXP on 8-A72 DPAA2 board. The problem is most
likely caused by missing the acquire semantics when reading
prod.tail (in SC dequeue) which makes it possible to read a
stale value from the ring slots.

For MP (and MC) case, rte_atomic32_cmpset() already provides the required
ordering. For SP case, the control depependency between if-statement (which
depends on the read of r->cons.tail) and the later stores to the ring slots
make RMB unnecessary. About the control dependency, read more at:
https://www.cl.cam.ac.uk/~pes20/ppc-supplemental/test7.pdf

This patch is adding the required read barrier to prevent reading the ring
slots get reordered before reading prod.tail for SC case.

Fixes: c9fb3c6289 ("ring: move code in a new header file")
Cc: stable@dpdk.org

Signed-off-by: Gavin Hu <gavin.hu@arm.com>
Reviewed-by: Ola Liljedahl <ola.liljedahl@arm.com>
Tested-by: Nipun Gupta <nipun.gupta@nxp.com>
Acked-by: Nipun Gupta <nipun.gupta@nxp.com>
Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
2019-03-28 01:22:04 +01:00
Pavan Nikhilesh
5cbd14b3e5 eal: roundup TSC frequency when estimating
When estimating tsc frequency using sleep/gettime round it up to the
nearest multiple of 10Mhz for more accuracy.

Signed-off-by: Pavan Nikhilesh <pbhagavatula@marvell.com>
Reviewed-by: Keith Wiles <keith.wiles@intel.com>
2019-03-28 00:45:16 +01:00
Pavan Nikhilesh
f56e551485 eal: add macro to align value to the nearest multiple
Add macro to align value to the nearest multiple of the given value,
resultant value might be greater than or less than the first parameter
whichever difference is the lowest.
Update unit test to include the new macro.

Signed-off-by: Pavan Nikhilesh <pbhagavatula@marvell.com>
2019-03-28 00:45:00 +01:00