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While at it, use checktool helper.
Signed-off-by: Florian Westphal <fw@strlen.de>
Link: https://lore.kernel.org/r/20240411233624.8129-12-fw@strlen.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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The setup_ns helper makes the netns names random, so replace nsX with $nsX
everywhere.
Replace nc with socat, otherwise script fails on my system due to
incompatible nc versions ("nc: cannot use -p and -l").
Signed-off-by: Florian Westphal <fw@strlen.de>
Link: https://lore.kernel.org/r/20240411233624.8129-11-fw@strlen.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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... so it doesn't have to be repeated everywhere.
Signed-off-by: Florian Westphal <fw@strlen.de>
Link: https://lore.kernel.org/r/20240411233624.8129-10-fw@strlen.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Signed-off-by: Florian Westphal <fw@strlen.de>
Link: https://lore.kernel.org/r/20240411233624.8129-9-fw@strlen.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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swap test for "ip" with "conntrack", former is already accounted for
via setup_ns helper. Also switch to bash.
Signed-off-by: Florian Westphal <fw@strlen.de>
Link: https://lore.kernel.org/r/20240411233624.8129-8-fw@strlen.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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While at it, address warnings generated by shellcheck and fix following
minor issues:
- some distros place netem in 'extra' modules package, so add a skip check for netem-attach
failure.
- tc prints a warning for the 100mbit class:
"Warning: sch_htb: quantum of class 10001 is big. Consider r2q change."
Silence this by increasing the divisor.
Signed-off-by: Florian Westphal <fw@strlen.de>
Link: https://lore.kernel.org/r/20240411233624.8129-7-fw@strlen.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Replace nc with socat. Too many different implementations of nc
are around with incompatible options ("nc: cannot use -p and -l").
Signed-off-by: Florian Westphal <fw@strlen.de>
Link: https://lore.kernel.org/r/20240411233624.8129-6-fw@strlen.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Only relevant change is that netns names have random suffix names,
i.e. its safe to run this in parallel with other tests.
Signed-off-by: Florian Westphal <fw@strlen.de>
Link: https://lore.kernel.org/r/20240411233624.8129-5-fw@strlen.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Also, fix two issues reported by Pablo Neira:
1. Must modprobe br_netfilter in case its not loaded,
else sysctl cannot be set.
2. ping for netns4 fails if rp_filter is enabled in bridge netns,
so set all and default to 0.
Signed-off-by: Florian Westphal <fw@strlen.de>
Link: https://lore.kernel.org/r/20240411233624.8129-4-fw@strlen.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Doing so gets us dynamically generated netns names.
Also:
* do not assume rp_filter is disabled, if its on script failed
* reduce timeout (-W) for "expected to fail" ping commands
* don't print PASS line for basic sanity ping
* shellcheck cleanups
Signed-off-by: Florian Westphal <fw@strlen.de>
Link: https://lore.kernel.org/r/20240411233624.8129-3-fw@strlen.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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.. so this can start re-using existing lib.sh infra in next patches.
Several of these scripts will not work, e.g. because they assume
rp_filter is disabled, or reliance on a particular version/flavor
of "netcat" tool.
Add config settings for them.
nft_trans_stress.sh script is removed, it also exists in the nftables
userspace selftests. I do not see a reason to keep two versions in
different repositories/projects.
The settings file is removed for now:
It was used to increase the timeout to avoid slow scripts from getting
zapped by the 45s timeout, but some of the slow scripts can be sped up.
Re-add it later for scripts that cannot be sped up easily.
Update MAINTAINERS to reflect that future updates to netfilter
scripts should go through netfilter-devel@.
Signed-off-by: Florian Westphal <fw@strlen.de>
Link: https://lore.kernel.org/r/20240411233624.8129-2-fw@strlen.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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We have two printk tests reading trace_pipe in non blocking way,
with the very same code. Moving that in new read_trace_pipe_iter
function.
Current read_trace_pipe is used from samples/bpf and needs to
do blocking read and printf of the trace_pipe data, using new
read_trace_pipe_iter to implement that.
Both printk tests do early checks for the number of found messages
and can bail earlier, but I did not find any speed difference w/o
that condition, so I did not complicate the change more for that.
Some of the samples/bpf programs use read_trace_pipe function,
so I kept that interface untouched. I did not see any issues with
affected samples/bpf programs other than there's slight change in
read_trace_pipe output. The current code uses puts that adds new
line after the printed string, so we would occasionally see extra
new line. With this patch we read output per lines, so there's no
need to use puts and we can use just printf instead without extra
new line.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Yonghong Song <yonghong.song@linux.dev>
Link: https://lore.kernel.org/bpf/20240410140952.292261-1-jolsa@kernel.org
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As Mark explains ksft_min_kernel_version() can't be compiled with nolibc,
it doesn't implement uname().
Fixes: 6d029c25b71f ("selftests/timers/posix_timers: Reimplement check_timer_distribution()")
Reported-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20240412123536.GA32444@redhat.com
Closes: https://lore.kernel.org/all/f0523b3a-ea08-4615-b0fb-5b504a2d39df@sirena.org.uk/
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Building with clang results in the following warning:
posix_timers.c:69:6: warning: absolute value function 'abs' given an
argument of type 'long long' but has parameter of type 'int' which may
cause truncation of value [-Wabsolute-value]
if (abs(diff - DELAY * USECS_PER_SEC) > USECS_PER_SEC / 2) {
^
So switch to using llabs() instead.
Fixes: 0bc4b0cf1570 ("selftests: add basic posix timers selftests")
Signed-off-by: John Stultz <jstultz@google.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20240410232637.4135564-3-jstultz@google.com
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__noreturn
After commit 6d029c25b71f ("selftests/timers/posix_timers: Reimplement
check_timer_distribution()"), clang warns:
tools/testing/selftests/timers/../kselftest.h:398:6: warning: variable 'major' is used uninitialized whenever '||' condition is true [-Wsometimes-uninitialized]
398 | if (uname(&info) || sscanf(info.release, "%u.%u.", &major, &minor) != 2)
| ^~~~~~~~~~~~
tools/testing/selftests/timers/../kselftest.h:401:9: note: uninitialized use occurs here
401 | return major > min_major || (major == min_major && minor >= min_minor);
| ^~~~~
tools/testing/selftests/timers/../kselftest.h:398:6: note: remove the '||' if its condition is always false
398 | if (uname(&info) || sscanf(info.release, "%u.%u.", &major, &minor) != 2)
| ^~~~~~~~~~~~~~~
tools/testing/selftests/timers/../kselftest.h:395:20: note: initialize the variable 'major' to silence this warning
395 | unsigned int major, minor;
| ^
| = 0
This is a false positive because if uname() fails, ksft_exit_fail_msg()
will be called, which unconditionally calls exit(), a noreturn function.
However, clang does not know that ksft_exit_fail_msg() will call exit() at
the point in the pipeline that the warning is emitted because inlining has
not occurred, so it assumes control flow will resume normally after
ksft_exit_fail_msg() is called.
Make it clear to clang that all of the functions that call exit()
unconditionally in kselftest.h are noreturn transitively by marking them
explicitly with '__attribute__((__noreturn__))', which clears up the
warning above and any future warnings that may appear for the same reason.
Fixes: 6d029c25b71f ("selftests/timers/posix_timers: Reimplement check_timer_distribution()")
Reported-by: John Stultz <jstultz@google.com>
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Shuah Khan <skhan@linuxfoundation.org>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20240411-mark-kselftest-exit-funcs-noreturn-v1-1-b027c948f586@kernel.org
Closes: https://lore.kernel.org/all/20240410232637.4135564-2-jstultz@google.com/
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After commit 6d029c25b71f ("selftests/timers/posix_timers: Reimplement
check_timer_distribution()") the following warning occurs when building
with an older gcc:
posix_timers.c:250:2: warning: format not a string literal and no format arguments [-Wformat-security]
250 | ksft_print_msg(errmsg);
| ^~~~~~~~~~~~~~
Fix this up by changing it to ksft_print_msg("%s", errmsg)
Fixes: 6d029c25b71f ("selftests/timers/posix_timers: Reimplement check_timer_distribution()")
Signed-off-by: John Stultz <jstultz@google.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Justin Stitt <justinstitt@google.com>
Acked-by: Shuah Khan <skhan@linuxfoundation.org>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20240410232637.4135564-1-jstultz@google.com
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The test sets a hardware breakpoint and uses a BPF program to suppress the
side effects of a perf event sample, including I/O availability signals,
SIGTRAPs, and decrementing the event counter limit, if the IP matches the
expected value. Then the function with the breakpoint is executed multiple
times to test that all effects behave as expected.
Signed-off-by: Kyle Huey <khuey@kylehuey.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Song Liu <song@kernel.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/r/20240412015019.7060-8-khuey@kylehuey.com
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The "close handle without consuming VPD" testcase has inconsistent
results because it fails to initialize the location code object it
passes to ioctl() to create a VPD handle. Initialize the location code
to the empty string as intended.
Signed-off-by: Nathan Lynch <nathanl@linux.ibm.com>
Fixes: 9118c5d32bdd ("powerpc/selftests: Add test for papr-vpd")
Reported-by: Geetika Moolchandani <geetika@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20240404-papr-vpd-test-uninit-lc-v2-1-37bff46c65a5@linux.ibm.com
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git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl
Pull cxl fixes from Dave Jiang:
- Fix index of Clear Event Record handles in cxl_clear_event_record()
- Fix use before init of map->reg_type in cxl_decode_regblock()
- Fix initialization of mbox_cmd.size_out in cxl_mem_get_records_log()
- Fix CXL path access_coordinate computation:
- Remove unneded check of iter in loop
- Fix of retrieving of access_coordinate in PCI topology walk
- Fix of incorrect region access_coordinate data calculation
- Consolidate of access_coordinates attached to downstream port
context
- Add check to validate access_coordinate validity to prevent
incorrect data being exposed via sysfs
* tag 'cxl-fixes-6.9-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl:
cxl: Add checks to access_coordinate calculation to fail missing data
cxl: Consolidate dport access_coordinate ->hb_coord and ->sw_coord into ->coord
cxl: Fix incorrect region perf data calculation
cxl: Fix retrieving of access_coordinates in PCIe path
cxl: Remove checking of iter in cxl_endpoint_get_perf_coordinates()
cxl/core: Fix initialization of mbox_cmd.size_out in get event
cxl/core/regs: Fix usage of map->reg_type in cxl_decode_regblock() before assigned
cxl/mem: Fix for the index of Clear Event Record Handle
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Cross-merge networking fixes after downstream PR.
Conflicts:
net/unix/garbage.c
47d8ac011fe1 ("af_unix: Fix garbage collector racing against connect()")
4090fa373f0e ("af_unix: Replace garbage collection algorithm.")
Adjacent changes:
drivers/net/ethernet/broadcom/bnxt/bnxt.c
faa12ca24558 ("bnxt_en: Reset PTP tx_avail after possible firmware reset")
b3d0083caf9a ("bnxt_en: Support RSS contexts in ethtool .{get|set}_rxfh()")
drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.c
7ac10c7d728d ("bnxt_en: Fix possible memory leak in bnxt_rdma_aux_device_init()")
194fad5b2781 ("bnxt_en: Refactor bnxt_rdma_aux_device_init/uninit functions")
drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
958f56e48385 ("net/mlx5e: Un-expose functions in en.h")
49e6c9387051 ("net/mlx5e: RSS, Block XOR hash with over 128 channels")
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Extend vmx_dirty_log_test to include accesses made by L2 when EPT is
disabled.
This commit adds explicit coverage of a bug caught by syzkaller, where
the TDP MMU would clear D-bits instead of write-protecting SPTEs being
used to map an L2, which only happens when L1 does not enable EPT,
causing writes made by L2 to not be reflected in the dirty log when PML
is enabled:
$ ./vmx_dirty_log_test
Nested EPT: disabled
==== Test Assertion Failure ====
x86_64/vmx_dirty_log_test.c:151: test_bit(0, bmap)
pid=72052 tid=72052 errno=4 - Interrupted system call
(stack trace empty)
Page 0 incorrectly reported clean
Opportunistically replace the volatile casts with {READ,WRITE}_ONCE().
Link: https://lore.kernel.org/kvm/000000000000c6526f06137f18cc@google.com/
Signed-off-by: David Matlack <dmatlack@google.com>
Link: https://lore.kernel.org/r/20240315230541.1635322-5-dmatlack@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
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This patch extracts the code to send and receive data into a new
helper named send_recv_data() in network_helpers.c and export it
in network_helpers.h.
This helper will be used for MPTCP BPF selftests.
Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn>
Link: https://lore.kernel.org/r/5231103be91fadcce3674a589542c63b6a5eedd4.1712813933.git.tanggeliang@kylinos.cn
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
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Avoid setting total_bytes and stop as global variables, this patch adds
a new struct named send_recv_arg to pass arguments between threads. Put
these two variables together with fd into this struct and pass it to
server thread, so that server thread can access these two variables without
setting them as global ones.
Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn>
Link: https://lore.kernel.org/r/ca1dd703b796f6810985418373e750f7068b4186.1712813933.git.tanggeliang@kylinos.cn
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
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This patch fixes the following "umount cgroup2" error in test_sockmap.c:
(cgroup_helpers.c:353: errno: Device or resource busy) umount cgroup2
Cgroup fd cg_fd should be closed before cleanup_cgroup_environment().
Fixes: 13a5f3ffd202 ("bpf: Selftests, sockmap test prog run without setting cgroup")
Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn>
Acked-by: Yonghong Song <yonghong.song@linux.dev>
Link: https://lore.kernel.org/r/0399983bde729708773416b8488bac2cd5e022b8.1712639568.git.tanggeliang@kylinos.cn
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
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Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-ID: <20240404121327.3107131-18-pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Allow the caller to set the initial state of the VM. Doing this
before sev_vm_launch() matters for SEV-ES, since that is the
place where the VMSA is updated and after which the guest state
becomes sealed.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-ID: <20240404121327.3107131-17-pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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This removes the concept of "subtypes", instead letting the tests use proper
VM types that were recently added. While the sev_init_vm() and sev_es_init_vm()
are still able to operate with the legacy KVM_SEV_INIT and KVM_SEV_ES_INIT
ioctls, this is limited to VMs that are created manually with
vm_create_barebones().
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-ID: <20240404121327.3107131-16-pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-ID: <20240404121327.3107131-15-pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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This patch adds a new helper chk_msk_info() to show the counters in
mptcp_info of the given info, and check that the timestamps move
forward. Use it to show newly added last_data_sent, last_data_recv
and last_ack_recv in mptcp_info in chk_last_time_info().
Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn>
Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Reviewed-by: Mat Martineau <martineau@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://lore.kernel.org/r/20240410-upstream-net-next-20240405-mptcp-last-time-info-v2-2-f95bd6b33e51@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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When looking at Alexei's patch ([1]) which added tests for atomics,
I noticed that the tests will be skipped with cpuv4. For example,
with latest llvm19, I see:
[root@arch-fb-vm1 bpf]# ./test_progs -t arena_atomics
#3/1 arena_atomics/add:OK
...
#3/7 arena_atomics/xchg:OK
#3 arena_atomics:OK
Summary: 1/7 PASSED, 0 SKIPPED, 0 FAILED
[root@arch-fb-vm1 bpf]# ./test_progs-cpuv4 -t arena_atomics
#3 arena_atomics:SKIP
Summary: 1/0 PASSED, 1 SKIPPED, 0 FAILED
[root@arch-fb-vm1 bpf]#
It is perfectly fine to enable atomics-related tests for cpuv4.
With this patch, I have
[root@arch-fb-vm1 bpf]# ./test_progs-cpuv4 -t arena_atomics
#3/1 arena_atomics/add:OK
...
#3/7 arena_atomics/xchg:OK
#3 arena_atomics:OK
Summary: 1/7 PASSED, 0 SKIPPED, 0 FAILED
[1] https://lore.kernel.org/r/20240405231134.17274-2-alexei.starovoitov@gmail.com
Signed-off-by: Yonghong Song <yonghong.song@linux.dev>
Link: https://lore.kernel.org/r/20240410153326.1851055-1-yonghong.song@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Add a few more tests in sockmap_basic.c and sockmap_listen.c to
test bpf_link based APIs for SK_MSG and SK_SKB programs.
Link attach/detach/update are all tested.
All tests are passed.
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Reviewed-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Yonghong Song <yonghong.song@linux.dev>
Link: https://lore.kernel.org/r/20240410043547.3738448-1-yonghong.song@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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These helper functions will be used later new tests as well.
There are no functionality change.
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Reviewed-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Yonghong Song <yonghong.song@linux.dev>
Link: https://lore.kernel.org/r/20240410043542.3738166-1-yonghong.song@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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After commit 40867d74c374 ("net: Add l3mdev index to flow struct and
avoid oif reset for port devices") it is possible to configure FIB rules
that match on iif / oif being a l3mdev port. It was not possible before
as these parameters were reset to the ifindex of the l3mdev device
itself prior to the FIB rules lookup.
Add tests that cover this functionality as it does not seem to be
covered by existing ones and I am aware of at least one user that needs
this functionality in addition to the one mentioned in [1].
Reuse the existing FIB rules tests by simply configuring a VRF prior to
the test and removing it afterwards. Differentiate the output of the
non-VRF tests from the VRF tests by appending "(VRF)" to the test name
if a l3mdev FIB rule is present.
Verified that these tests do fail on kernel 5.15.y which does not
include the previously mentioned commit:
# ./fib_rule_tests.sh -t fib_rule6_vrf
[...]
TEST: rule6 check: oif redirect to table (VRF) [FAIL]
[...]
TEST: rule6 check: iif redirect to table (VRF) [FAIL]
# ./fib_rule_tests.sh -t fib_rule4_vrf
[...]
TEST: rule4 check: oif redirect to table (VRF) [FAIL]
[...]
TEST: rule4 check: iif redirect to table (VRF) [FAIL]
[1] https://lore.kernel.org/netdev/20200922131122.GB1601@ICIPI.localdomain/
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://lore.kernel.org/r/20240409110816.2508498-1-idosch@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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I've verified that the tests matches libbsd's strlcat()/strlcpy()
implementation.
Please note that as strlcat()/strlcpy() are not part of the libc, the
tests are only compiled when using nolibc.
Signed-off-by: Rodrigo Campos <rodrigo@sdfg.com.ar>
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
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net/lib/py/nsim.py already contains the most useful parts
of the netdevsim wrapper classes. Reuse them.
Acked-by: Stanislav Fomichev <sdf@google.com>
Acked-by: Martin KaFai Lau <martin.lau@kernel.org>
Link: https://lore.kernel.org/r/20240409031549.3531084-5-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Non-ancient ip (iproute2-5.15.0, libbpf 0.7.0) refuses to load
the sample with maps because we don't generate BTF:
libbpf: BTF is required, but is missing or corrupted.
ERROR: opening BPF object file failed
Enable BTF by adding -g to clang flags. With that done
neither of the programs load:
libbpf: prog 'func': error relocating .BTF.ext function info: -22
libbpf: prog 'func': failed to relocate calls: -22
libbpf: failed to load object 'ksft-net-drv/net/sample_ret0.bpf.o'
Andrii explains that this is because we don't specify
section names for the code. Add the section names, too.
Acked-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Stanislav Fomichev <sdf@google.com>
Acked-by: Martin KaFai Lau <martin.lau@kernel.org>
Link: https://lore.kernel.org/r/20240409031549.3531084-4-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Maps are removed asynchronously. Either there's a bigger delay
now or the test has always been flaky. Retry waiting in the loop.
Acked-by: Stanislav Fomichev <sdf@google.com>
Acked-by: Martin KaFai Lau <martin.lau@kernel.org>
Link: https://lore.kernel.org/r/20240409031549.3531084-3-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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We're building more python tests on the netdev side, and some
of the classes from the venerable BPF offload tests can be reused.
Acked-by: Stanislav Fomichev <sdf@google.com>
Acked-by: Martin KaFai Lau <martin.lau@kernel.org>
Link: https://lore.kernel.org/r/20240409031549.3531084-2-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux
Pull turbostat updates from Len Brown:
- Use of the CPU MSR driver is now optional
- Perf is now preferred for many counters
- Non-root users can now execute turbostat, though with limited
functionality
- Add counters for some new GFX hardware
- Minor fixes
* tag 'turbostat-2024.04.10' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux: (26 commits)
tools/power turbostat: v2024.04.10
tools/power/turbostat: Add support for Xe sysfs knobs
tools/power/turbostat: Add support for new i915 sysfs knobs
tools/power/turbostat: Introduce BIC_SAM_mc6/BIC_SAMMHz/BIC_SAMACTMHz
tools/power/turbostat: Fix uncore frequency file string
tools/power/turbostat: Unify graphics sysfs snapshots
tools/power/turbostat: Cache graphics sysfs path
tools/power/turbostat: Enable MSR_CORE_C1_RES support for ICX
tools/power turbostat: Add selftests
tools/power turbostat: read RAPL counters via perf
tools/power turbostat: Add proper re-initialization for perf file descriptors
tools/power turbostat: Clear added counters when in no-msr mode
tools/power turbostat: add early exits for permission checks
tools/power turbostat: detect and disable unavailable BICs at runtime
tools/power turbostat: Add reading aperf and mperf via perf API
tools/power turbostat: Add --no-perf option
tools/power turbostat: Add --no-msr option
tools/power turbostat: enhance -D (debug counter dump) output
tools/power turbostat: Fix warning upon failed /dev/cpu_dma_latency read
tools/power turbostat: Read base_hz and bclk from CPUID.16H if available
...
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The struct adjtimex freq field takes a signed value who's units are in
shifted (<<16) parts-per-million.
Unfortunately for negative adjustments, the straightforward use of:
freq = ppm << 16 trips undefined behavior warnings with clang:
valid-adjtimex.c:66:6: warning: shifting a negative signed value is undefined [-Wshift-negative-value]
-499<<16,
~~~~^
valid-adjtimex.c:67:6: warning: shifting a negative signed value is undefined [-Wshift-negative-value]
-450<<16,
~~~~^
..
Fix it by using a multiply by (1 << 16) instead of shifting negative values
in the valid-adjtimex test case. Align the values for better readability.
Reported-by: Lee Jones <joneslee@google.com>
Reported-by: Muhammad Usama Anjum <usama.anjum@collabora.com>
Signed-off-by: John Stultz <jstultz@google.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Muhammad Usama Anjum <usama.anjum@collabora.com>
Link: https://lore.kernel.org/r/20240409202222.2830476-1-jstultz@google.com
Link: https://lore.kernel.org/lkml/0c6d4f0d-2064-4444-986b-1d1ed782135f@collabora.com/
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Usual way of testing, we call the function and ensures we receive
the event
Link: https://lore.kernel.org/r/20240315-b4-hid-bpf-new-funcs-v4-6-079c282469d3@kernel.org
Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>
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This time we need to ensure uhid receives it, thus the new mutex and
condition.
Link: https://lore.kernel.org/r/20240315-b4-hid-bpf-new-funcs-v4-4-079c282469d3@kernel.org
Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>
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It's always a good idea to have KASAN in tests.
Link: https://lore.kernel.org/r/20240315-b4-hid-bpf-new-funcs-v4-3-079c282469d3@kernel.org
Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>
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Much of turbostat can now run with perf, rather than using the MSR driver
Some of turbostat can now run as a regular non-root user.
Add some new output columns for some new GFX hardware.
[This patch updates the version, but otherwise changes no function;
it touches up some checkpatch issues from previous patches]
Signed-off-by: Len Brown <len.brown@intel.com>
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The ARCH_ and SOC_ versions of this symbol have persisted for quite a
while now in parallel. Generated .config files from previous LTS kernels
should have both. Finally remove SOC_VIRT and update all config files
using it.
Acked-by: Palmer Dabbelt <palmer@rivosinc.com>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
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For easier use of the tests in automation and for having some
status information for the user while the test is running, let's
provide some TAP output in this test.
Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Muhammad Usama Anjum <usama.anjum@collabora.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Link: https://lore.kernel.org/r/20231019095900.450467-1-thuth@redhat.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
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With multiple reader threads POLLing a single UFFD, the demand paging test
suffers from the thundering herd problem: performance degrades as the
number of reader threads is increased. Solve this issue [1] by switching
the the polling mechanism to EPOLL + EPOLLEXCLUSIVE.
Also, change the error-handling convention of uffd_handler_thread_fn.
Instead of just printing errors and returning early from the polling
loop, check for them via TEST_ASSERT(). "return NULL" is reserved for a
successful exit from uffd_handler_thread_fn, i.e. one triggered by a
write to the exit pipe.
Performance samples generated by the command in [2] are given below.
Num Reader Threads, Paging Rate (POLL), Paging Rate (EPOLL)
1 249k 185k
2 201k 235k
4 186k 155k
16 150k 217k
32 89k 198k
[1] Single-vCPU performance does suffer somewhat.
[2] ./demand_paging_test -u MINOR -s shmem -v 4 -o -r <num readers>
Signed-off-by: Anish Moorthy <amoorthy@google.com>
Acked-by: James Houghton <jthoughton@google.com>
Link: https://lore.kernel.org/r/20240215235405.368539-13-amoorthy@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
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paging test
At the moment, demand_paging_test does not support profiling/testing
multiple vCPU threads concurrently faulting on a single uffd because
(a) "-u" (run test in userfaultfd mode) creates a uffd for each vCPU's
region, so that each uffd services a single vCPU thread.
(b) "-u -o" (userfaultfd mode + overlapped vCPU memory accesses)
simply doesn't work: the test tries to register the same memory
to multiple uffds, causing an error.
Add support for many vcpus per uffd by
(1) Keeping "-u" behavior unchanged.
(2) Making "-u -a" create a single uffd for all of guest memory.
(3) Making "-u -o" implicitly pass "-a", solving the problem in (b).
In cases (2) and (3) all vCPU threads fault on a single uffd.
With potentially multiple vCPUs per UFFD, it makes sense to allow
configuring the number of reader threads per UFFD as well: add the "-r"
flag to do so.
Signed-off-by: Anish Moorthy <amoorthy@google.com>
Acked-by: James Houghton <jthoughton@google.com>
Link: https://lore.kernel.org/r/20240215235405.368539-12-amoorthy@google.com
[sean: fix kernel style violations, use calloc() for arrays]
Signed-off-by: Sean Christopherson <seanjc@google.com>
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Using the overall demand paging rate to measure performance can be
slightly misleading when vCPU accesses are not overlapped. Adding more
vCPUs will (usually) increase the overall demand paging rate even
if performance remains constant or even degrades on a per-vcpu basis. As
such, it makes sense to report both the total and per-vcpu paging rates.
Signed-off-by: Anish Moorthy <amoorthy@google.com>
Link: https://lore.kernel.org/r/20240215235405.368539-11-amoorthy@google.com
[sean: fix formatting]
Signed-off-by: Sean Christopherson <seanjc@google.com>
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Signed-off-by: Patryk Wlazlyn <patryk.wlazlyn@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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