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Fix kprobe string argument testcase to not probe notrace
function. Instead, it probes tracefs function which must
be available with ftrace.
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Shuah Khan (Samsung OSG) <shuah@kernel.org>
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Since commit eedf265aa003 ("devpts: Make each mount of devpts an
independent filesystem.") CONFIG_DEVPTS_MULTIPLE_INSTANCES isn't needed
in the defconfig anymore.
Signed-off-by: Anders Roxell <anders.roxell@linaro.org>
Signed-off-by: Shuah Khan (Samsung OSG) <shuah@kernel.org>
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Add the executable 'test_memcontrol' to a .gitignore file.
Signed-off-by: Anders Roxell <anders.roxell@linaro.org>
Signed-off-by: Shuah Khan (Samsung OSG) <shuah@kernel.org>
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This commit adds tests for some of the core functionalities
of cgroups v2.
The commit adds tests for some core principles of croup V2 API:
- test_cgcore_internal_process_constraint
Tests internal process constraint.
You can't add a pid to a domain parent if a controller is enabled.
- test_cgcore_top_down_constraint_enable
Tests that you can't enable a controller on a child if it's not enabled
on the parent.
- test_cgcore_top_down_constraint_disable
Tests that you can't disable a controller on a parent if it's
enabled in a child.
- test_cgcore_no_internal_process_constraint_on_threads
Tests that there's no internal process constrain on threaded cgroups.
You can add threads/processes on a parent with a controller enabled.
- test_cgcore_parent_becomes_threaded
Tests that when a child becomes threaded the parent type becomes
domain threaded.
- test_cgcore_invalid_domain
In a situation like:
A (domain threaded) - B (threaded) - C (domain)
it tests that C can't be used until it is turned into a threaded cgroup.
The "cgroup.type" file will report "domain (invalid)" in these cases.
Operations which fail due to invalid topology use EOPNOTSUPP as the errno.
- test_cgcore_populated
In a situation like:
A(0) - B(0) - C(1)
\ D(0)
It tests that A, B and C's "populated" fields would be 1 while D's 0.
It tests that after the one process in C is moved to root, A,B and C's
"populated" fields would flip to "0" and file modified events will
be generated on the "cgroup.events" files of both cgroups.
Signed-off-by: Claudio Zumbo <claudioz@fb.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Roman Gushchin <guro@fb.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: kernel-team@fb.com
Acked-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Roman Gushchin <guro@fb.com>
Signed-off-by: Shuah Khan (Samsung OSG) <shuah@kernel.org>
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Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
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Implement support for s390 in the rseq selftests, in order to sanity
check the recently enabled rseq syscall. The Implementation covers both
64-bit and 31-bit mode.
Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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I ran into the same issue as a009f1f396d0 ("selftests/bpf:
test_sockmap, timing improvements") where I had a broken
pipe error on the socket due to remote end timing out on
select and then shutting down it's sockets while the other
side was still sending. We may need to do a bigger rework
in general on the test_sockmap.c, but for now increase it
to a more suitable timeout.
Fixes: a18fda1a62c3 ("bpf: reduce runtime of test_sockmap tests")
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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There are some powerpc selftests, as tm/tm-unavailable, that run for a long
period (>120 seconds), and if it is interrupted, as pressing CRTL-C
(SIGINT), the foreground process (harness) dies but the child process and
threads continue to execute (with PPID = 1 now) in background.
In this case, you'd think the whole test exited, but there are remaining
threads and processes being executed in background. Sometimes these
zombies processes are doing annoying things, as consuming the whole CPU or
dumping things to STDOUT.
This patch fixes this problem by attaching an empty signal handler to
SIGINT in the harness process. This handler will interrupt (EINTR) the
parent process waitpid() call, letting the code to follow through the
normal flow, which will kill all the processes in the child process group.
This patch also fixes a typo.
Signed-off-by: Breno Leitao <leitao@debian.org>
Signed-off-by: Gustavo Romero <gromero@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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gre_multipath test was using egress vlan_id matching on flows, for the
purpose of collecting next-hops statistics, later to be compared
against configured weights.
As matching on vlan_id on egress direction is not supported on all HW
devices, change the match criteria to use destination IP.
Signed-off-by: Nir Dotan <nird@mellanox.com>
Acked-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Initial set of nat action unit tests.
Signed-off-by: Keara Leibovitz <kleib@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Daniel Borkmann says:
====================
pull-request: bpf-next 2018-08-07
The following pull-request contains BPF updates for your *net-next* tree.
The main changes are:
1) Add cgroup local storage for BPF programs, which provides a fast
accessible memory for storing various per-cgroup data like number
of transmitted packets, etc, from Roman.
2) Support bpf_get_socket_cookie() BPF helper in several more program
types that have a full socket available, from Andrey.
3) Significantly improve the performance of perf events which are
reported from BPF offload. Also convert a couple of BPF AF_XDP
samples overto use libbpf, both from Jakub.
4) seg6local LWT provides the End.DT6 action, which allows to
decapsulate an outer IPv6 header containing a Segment Routing Header.
Adds this action now to the seg6local BPF interface, from Mathieu.
5) Do not mark dst register as unbounded in MOV64 instruction when
both src and dst register are the same, from Arthur.
6) Define u_smp_rmb() and u_smp_wmb() to their respective barrier
instructions on arm64 for the AF_XDP sample code, from Brian.
7) Convert the tcp_client.py and tcp_server.py BPF selftest scripts
over from Python 2 to Python 3, from Jeremy.
8) Enable BTF build flags to the BPF sample code Makefile, from Taeung.
9) Remove an unnecessary rcu_read_lock() in run_lwt_bpf(), from Taehee.
10) Several improvements to the README.rst from the BPF documentation
to make it more consistent with RST format, from Tobin.
11) Replace all occurrences of strerror() by calls to strerror_r()
in libbpf and fix a FORTIFY_SOURCE build error along with it,
from Thomas.
12) Fix a bug in bpftool's get_btf() function to correctly propagate
an error via PTR_ERR(), from Yue.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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This adds a set of test cases to test the behaviour of
copy_tofrom_user when exceptions are encountered accessing the
source or destination. Currently, copy_tofrom_user does not always
copy as many bytes as possible when an exception occurs on a store
to the destination, and that is reflected in failures in these tests.
Based on a test program from Anton Blanchard.
[paulus@ozlabs.org - test all three paths, wrote commit description,
made EX_TABLE create an exception table.]
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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The hand-coded assembler 64-bit copy routines include feature sections
that select one code path or another depending on which CPU we are
executing on. The self-tests for these copy routines end up testing
just one path. This adds a mechanism for selecting any desired code
path at compile time, and makes 2 or 3 versions of each test, each
using a different code path, so as to cover all the possible paths.
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
[mpe: Add -mcpu=power4 to CFLAGS for older compilers]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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The alignment_handler is documented to only work on Power8/Power9, but
we can make it run on older CPUs by guarding more of the tests with
feature checks.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Reviewed-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
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Currently the alignment_handler test prints "Can't open /dev/fb0"
about 80 times per run, which is a little annoying.
Refactor it to check earlier if it can open /dev/fb0 and skip if not,
this results in each test printing something like:
test: test_alignment_handler_vsx_206
tags: git_version:v4.18-rc3-134-gfb21a48904aa
[SKIP] Test skipped on line 291
skip: test_alignment_handler_vsx_206
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Acked-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
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for PPC32
This patch adds a test for testing the new assembly strlen() for PPC32
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
[mpe: Fix 64-bit build]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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This patch adds a test for strlen()
string.c contains a copy of strlen() from lib/string.c
The test first tests the correctness of strlen() by comparing
the result with libc strlen(). It tests all cases of alignment.
It them tests the duration of an aligned strlen() on a 4 bytes string,
on a 16 bytes string and on a 256 bytes string.
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
[mpe: Drop change log from copy of string.c]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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This patch renames memcmp test to memcmp_64 and adds a memcmp_32 test
for testing the 32 bits version of memcmp()
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
[mpe: Fix 64-bit build by adding build_32bit test]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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Some of these long running tests can time out on heavily loaded
systems, give them longer to run.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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These tests are currently failing on (some) big endian systems. Until
we can fix that, skip them unless we're on ppc64le.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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Some of our selftests have only been tested on ppc64le and crash or
behave weirdly on ppc64/ppc32. So add a helper for checking the UTS
machine.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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This includes setting up the shadow VMCS and the secondary execution
controls in lib/vmx.c.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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The test calls KVM_RUN repeatedly, and creates an entirely new VM with the
old memory and vCPU state on every exit to userspace. The kvm_util API is
expanded with two functions that manage the lifetime of a kvm_vm struct:
the first closes the file descriptors and leaves the memory allocated,
and the second opens the file descriptors and reuses the memory from
the previous incarnation of the kvm_vm struct.
For now the test is very basic, as it does not test for example XSAVE or
vCPU events. However, it will test nested virtualization state starting
with the next patch.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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The selftests were not munmap-ing the kvm_run area from the vcpu file descriptor.
The result was that kvm_vcpu_release was not called and a reference was left in the
parent "struct kvm". Ultimately this was visible in the upcoming state save/restore
test as an error when KVM attempted to create a duplicate debugfs entry.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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The allocation of the VMXON and VMCS is currently done twice, in
lib/vmx.c and in vmx_tsc_adjust_test.c. Reorganize the code to
provide a cleaner and easier to use API to the tests. lib/vmx.c
now does the complete setup of the VMX data structures, but does not
create the VM or set CPUID. This has to be done by the caller.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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The GDT and the TSS base were left to zero, and this has interesting effects
when the TSS descriptor is later read to set up a VMCS's TR_BASE. Basically
it worked by chance, and this patch fixes it by setting up all the protected
mode data structures properly.
Because the GDT and TSS addresses are virtual, the page tables now always
exist at the time of vcpu setup.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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KVM is supposed to update some guest VM's CPUID bits (e.g. OSXSAVE) when
CR4 is changed. A bug was found in KVM recently and it was fixed by
Commit c4d2188206ba ("KVM: x86: Update cpuid properly when CR4.OSXAVE or
CR4.PKE is changed"). This patch adds a test to verify the synchronization
between guest VM's CR4 and CPUID bits.
Signed-off-by: Wei Huang <wei@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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This patch changes the tools/lib/bpf/btf.[ch] to LGPL which
is inline with libbpf also.
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
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Match patterns for some skbedit tests contain duplicate whitespace that is
not present in actual tc output. This causes tests to fail because they
can't match required action, even when it was successfully created.
Signed-off-by: Vlad Buslov <vladbu@mellanox.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Match patterns for some connmark tests contain duplicate whitespace that is
not present in actual tc output. This causes tests to fail because they
can't match required action, even when it was successfully created.
Fixes: 1dad0f9ffff7 ("tc-testing: add connmark action tests")
Signed-off-by: Vlad Buslov <vladbu@mellanox.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Test 6fb4 creates one mirred and one pipe action, but only flushes mirred
on teardown. Leaking pipe action causes failures in other tests.
Add additional teardown command to also flush gact actions.
Signed-off-by: Vlad Buslov <vladbu@mellanox.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Fix expected ip address to actually match configured ip address.
Fix test to expect single matched filter.
Signed-off-by: Vlad Buslov <vladbu@mellanox.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Lots of overlapping changes, mostly trivial in nature.
The mlxsw conflict was resolving using the example
resolution at:
https://github.com/jpirko/linux_mlxsw/blob/combined_queue/drivers/net/ethernet/mellanox/mlxsw/core_acl_flex_actions.c
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixes from Thomas Gleixner:
"A set of fixes for perf:
Kernel side:
- Fix the hardcoded index of extra PCI devices on Broadwell which
caused a resource conflict and triggered warnings on CPU hotplug.
Tooling:
- Update the tools copy of several files, including perf_event.h,
powerpc's asm/unistd.h (new io_pgetevents syscall), bpf.h and x86's
memcpy_64.s (used in 'perf bench mem'), silencing the respective
warnings during the perf tools build.
- Fix the build on the alpine:edge distro"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf/x86/intel/uncore: Fix hardcoded index of Broadwell extra PCI devices
perf tools: Fix the build on the alpine:edge distro
tools arch: Update arch/x86/lib/memcpy_64.S copy used in 'perf bench mem memcpy'
tools headers uapi: Refresh linux/bpf.h copy
tools headers powerpc: Update asm/unistd.h copy to pick new
tools headers uapi: Update tools's copy of linux/perf_event.h
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Daniel Borkmann says:
====================
pull-request: bpf 2018-08-05
The following pull-request contains BPF updates for your *net* tree.
The main changes are:
1) Fix bpftool percpu_array dump by using correct roundup to next
multiple of 8 for the value size, from Yonghong.
2) Fix in AF_XDP's __xsk_rcv_zc() to not returning frames back to
allocator since driver will recycle frame anyway in case of an
error, from Jakub.
3) Fix up BPF test_lwt_seg6local test cases to final iproute2
syntax, from Mathieu.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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The shell file for test_lwt_seg6local contains an early iproute2 syntax
for installing a seg6local End.BPF route. iproute2 support for this
feature has recently been upstreamed, but with an additional keyword
required. This patch updates test_lwt_seg6local.sh to the definitive
iproute2 syntax
Signed-off-by: Mathieu Xhonneux <m.xhonneux@gmail.com>
Acked-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
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Commit fbeb1603bf4e ("bpf: verifier: MOV64 don't mark dst reg unbounded")
revealed a typo in commit fb30d4b71214 ("bpf: Add tests for map-in-map"):
BPF_MOV64_REG(BPF_REG_0, 0) was used instead of
BPF_MOV64_IMM(BPF_REG_0, 0).
I've noticed the problem by running bpf kselftests.
Fixes: fb30d4b71214 ("bpf: Add tests for map-in-map")
Signed-off-by: Roman Gushchin <guro@fb.com>
Cc: Martin KaFai Lau <kafai@fb.com>
Cc: Arthur Fabre <afabre@cloudflare.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Alexei Starovoitov <ast@kernel.org>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
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commit 38d5d3b3d5db ("bpf: Introduce BPF_ANNOTATE_KV_PAIR")
added to the bpf and net trees what
commit 92b57121ca79 ("bpf: btf: export btf types and name by offset from lib")
has already added to bpf-next/net-next, but in slightly different
location. Remove the duplicates (to fix build of libbpf).
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Implement a test to cover the cgroup storage functionality.
The test implements a bpf program which drops every second packet
by using the cgroup storage as a persistent storage.
The test also use the userspace API to check the data
in the cgroup storage, alter it, and check that the loaded
and attached bpf program sees the update.
Expected output:
$ ./test_cgroup_storage
test_cgroup_storage:PASS
Signed-off-by: Roman Gushchin <guro@fb.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
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Add the following verifier tests to cover the cgroup storage
functionality:
1) valid access to the cgroup storage
2) invalid access: use regular hashmap instead of cgroup storage map
3) invalid access: use invalid map fd
4) invalid access: try access memory after the cgroup storage
5) invalid access: try access memory before the cgroup storage
6) invalid access: call get_local_storage() with non-zero flags
For tests 2)-6) check returned error strings.
Expected output:
$ ./test_verifier
#0/u add+sub+mul OK
#0/p add+sub+mul OK
#1/u DIV32 by 0, zero check 1 OK
...
#280/p valid cgroup storage access OK
#281/p invalid cgroup storage access 1 OK
#282/p invalid cgroup storage access 2 OK
#283/p invalid per-cgroup storage access 3 OK
#284/p invalid cgroup storage access 4 OK
#285/p invalid cgroup storage access 5 OK
...
#649/p pass modified ctx pointer to helper, 2 OK
#650/p pass modified ctx pointer to helper, 3 OK
Summary: 901 PASSED, 0 SKIPPED, 0 FAILED
Signed-off-by: Roman Gushchin <guro@fb.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
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Add BPF_MAP_TYPE_CGROUP_STORAGE maps to the list
of maps types which bpftool recognizes.
Signed-off-by: Roman Gushchin <guro@fb.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
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Sync cgroup storage related changes:
1) new BPF_MAP_TYPE_CGROUP_STORAGE map type
2) struct bpf_cgroup_sotrage_key definition
3) get_local_storage() helper
Signed-off-by: Roman Gushchin <guro@fb.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
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The BTF conflicts were simple overlapping changes.
The virtio_net conflict was an overlap of a fix of statistics counter,
happening alongisde a move over to a bonafide statistics structure
rather than counting value on the stack.
Signed-off-by: David S. Miller <davem@davemloft.net>
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use actual protocol family passed by user rather than hardcoded
AF_INTE6 to cerate sockets.
current code is not working for IPv4.
Signed-off-by: Maninder Singh <maninder1.s@samsung.com>
Signed-off-by: Vaneet Narang <v.narang@samsung.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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So far the --syscalls option was the default, requiring explicit
--no-syscalls when wanting to process just some other event, invert that
and assume it only when no other event was specified, allowing its
explicit enablement when wanting to see all syscalls together with some
other event:
E.g:
The existing default is maintained for a single workload:
# perf trace sleep 1
<SNIP>
0.264 ( 0.003 ms): sleep/12762 mmap(len: 113045344, prot: READ, flags: PRIVATE, fd: 3) = 0x7f62cbf04000
0.271 ( 0.001 ms): sleep/12762 close(fd: 3) = 0
0.295 (1000.130 ms): sleep/12762 nanosleep(rqtp: 0x7ffd15194fd0) = 0
1000.469 ( 0.006 ms): sleep/12762 close(fd: 1) = 0
1000.480 ( 0.004 ms): sleep/12762 close(fd: 2) = 0
1000.502 ( ): sleep/12762 exit_group()
#
For a pid:
# pidof ssh
7826 3961 3226 2628 2493
# perf trace -p 3961
? ( ): ... [continued]: select()) = 1
0.023 ( 0.005 ms): clock_gettime(which_clock: BOOTTIME, tp: 0x7ffcc8fce870 ) = 0
0.036 ( 0.009 ms): read(fd: 5</dev/pts/7>, buf: 0x7ffcc8fca7b0, count: 16384 ) = 3
0.060 ( 0.004 ms): getpid( ) = 3961 (ssh)
0.079 ( 0.004 ms): clock_gettime(which_clock: BOOTTIME, tp: 0x7ffcc8fce8e0 ) = 0
0.088 ( 0.003 ms): clock_gettime(which_clock: BOOTTIME, tp: 0x7ffcc8fce7c0 ) = 0
<SNIP>
For system wide, threads, cgroups, user, etc when no event is specified,
the existing behaviour is maintained, i.e. --syscalls is selected.
When some event is specified, then --no-syscalls doesn't need to be
specified:
# perf trace -e tcp:tcp_probe ssh localhost
0.000 tcp:tcp_probe:src=[::1]:22 dest=[::1]:39074 mark=0 length=53 snd_nxt=0xb67ce8f7 snd_una=0xb67ce8f7 snd_cwnd=10 ssthresh=2147483647 snd_wnd=43776 srtt=18 rcv_wnd=43690
0.010 tcp:tcp_probe:src=[::1]:39074 dest=[::1]:22 mark=0 length=32 snd_nxt=0xa8f9ef38 snd_una=0xa8f9ef23 snd_cwnd=10 ssthresh=2147483647 snd_wnd=43690 srtt=31 rcv_wnd=43776
4.525 tcp:tcp_probe:src=[::1]:22 dest=[::1]:39074 mark=0 length=1240 snd_nxt=0xb67ce90c snd_una=0xb67ce90c snd_cwnd=10 ssthresh=2147483647 snd_wnd=43776 srtt=18 rcv_wnd=43776
7.242 tcp:tcp_probe:src=[::1]:22 dest=[::1]:39074 mark=0 length=80 snd_nxt=0xb67ced44 snd_una=0xb67ce90c snd_cwnd=10 ssthresh=2147483647 snd_wnd=43776 srtt=18 rcv_wnd=174720
The authenticity of host 'localhost (::1)' can't be established.
ECDSA key fingerprint is SHA256:TKZS58923458203490asekfjaklskljmkjfgPMBfHzY.
ECDSA key fingerprint is MD5:d8:29:54:40:71:fa:b8:44:89:52:64:8a:35:42:d0:e8.
Are you sure you want to continue connecting (yes/no)?
^C
#
To get the previous behaviour just use --syscalls and get all syscalls formatted
strace like + the specified extra events:
# trace -e sched:*switch --syscalls sleep 1
<SNIP>
0.160 ( 0.003 ms): sleep/12877 mprotect(start: 0x7fdfe2361000, len: 4096, prot: READ) = 0
0.164 ( 0.009 ms): sleep/12877 munmap(addr: 0x7fdfe2345000, len: 113155) = 0
0.211 ( 0.001 ms): sleep/12877 brk() = 0x55d3ce68e000
0.212 ( 0.002 ms): sleep/12877 brk(brk: 0x55d3ce6af000) = 0x55d3ce6af000
0.215 ( 0.001 ms): sleep/12877 brk() = 0x55d3ce6af000
0.219 ( 0.004 ms): sleep/12877 open(filename: 0xe1f07c00, flags: CLOEXEC) = 3
0.225 ( 0.001 ms): sleep/12877 fstat(fd: 3, statbuf: 0x7fdfe2138aa0) = 0
0.227 ( 0.003 ms): sleep/12877 mmap(len: 113045344, prot: READ, flags: PRIVATE, fd: 3) = 0x7fdfdb1b8000
0.234 ( 0.001 ms): sleep/12877 close(fd: 3) = 0
0.257 ( ): sleep/12877 nanosleep(rqtp: 0x7fffb36b6020) ...
0.260 ( ): sched:sched_switch:prev_comm=sleep prev_pid=12877 prev_prio=120 prev_state=D ==> next_comm=swapper/3 next_pid=0 next_prio=120
0.257 (1000.134 ms): sleep/12877 ... [continued]: nanosleep()) = 0
1000.428 ( 0.006 ms): sleep/12877 close(fd: 1) = 0
1000.440 ( 0.004 ms): sleep/12877 close(fd: 2) = 0
1000.461 ( ): sleep/12877 exit_group()
#
When specifiying just some syscalls, the behaviour doesn't change, i.e.:
# trace -e nanosleep -e sched:*switch sleep 1
0.000 ( ): sleep/14974 nanosleep(rqtp: 0x7ffc344ba9c0 ) ...
0.007 ( ): sched:sched_switch:prev_comm=sleep prev_pid=14974 prev_prio=120 prev_state=D ==> next_comm=swapper/2 next_pid=0 next_prio=120
0.000 (1000.139 ms): sleep/14974 ... [continued]: nanosleep()) = 0
#
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: https://lkml.kernel.org/n/tip-om2fulll97ytnxv40ler8jkf@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fixes from Rafael Wysocki:
"These fix the scope of a recent intel_pstate driver optimization used
incorrectly on some systems due to processor identification ambiguity
and fix a few issues in the turbostat utility, including three recent
regressions.
Specifics:
- Use ACPI FADT preferred PM Profile to distinguish Skylake desktop
processors from some server ones with the same model number in
order to limit the scope of the recent IO-wait boost optimization
to servers, as intended (Srinivas Pandruvada).
- Fix several issues in the turbostat utility:
* Fix the -S option on 1-CPU systems (Len Brown).
* Fix computations using incorrect processor core counts (Artem
Bityutskiy).
* Fix the x2apic debug message (Len Brown).
* Fix logical node enumeration to allow for non-sequential
physical nodes (Prarit Bhargava).
* Fix reported family on modern AMD processors (Calvin Walton).
* Clarify the RAPL column information in the man page (Len Brown)"
* tag 'pm-urgent-4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
cpufreq: intel_pstate: Limit the scope of HWP dynamic boost platforms
tools/power turbostat: version 18.07.27
tools/power turbostat: Read extended processor family from CPUID
tools/power turbostat: Fix logical node enumeration to allow for non-sequential physical nodes
tools/power turbostat: fix x2apic debug message output file
tools/power turbostat: fix bogus summary values
tools/power turbostat: fix -S on UP systems
tools/power turbostat: Update turbostat(8) RAPL throttling column description
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Verify that with that sysctl turned off, DSCP prioritization and rewrite
works the same way as in qos_dscp_bridge test. However when the sysctl
is charged, there should be a reprioritization after routing stage,
which will be observed by a different DSCP rewrite on egress.
Signed-off-by: Petr Machata <petrm@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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dscp_capture_install() and dscp_capture_uninstall() are going to be
useful for a test added by a following patch, move them therefore to
lib.sh together with related helpers.
While doing so, change the rule preference from mere DSCP value to
DSCP+100 in order to support adding captures of packets with DSCP of 0.
Signed-off-by: Petr Machata <petrm@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The function lldpad_wait() will be useful for a test added by a
following patch. Likewise would the "sleep 5" with its extensive
comment.
Therefore move lldpad_wait() to lib.sh in order to allow reuse. Rename
it to lldpad_app_wait_set() to recognize that what this is intended to
wait on are the pending APP sets.
For the sleeping, add a function lldpad_app_wait_del(). That will serve
to hold the related explanatory comment (which edit for clarity), and as
a token in the caller to identify the sites where this sort of waiting
takes place. That will serve when/if a better way to handle this
business is found.
Signed-off-by: Petr Machata <petrm@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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