linux.git/tools/lib, branch v5.13-rc2

Merge tag 'net-5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

2021-05-08T15:31:46+00:00

Pull networking fixes from Jakub Kicinski:
 "Networking fixes for 5.13-rc1, including fixes from bpf, can and
  netfilter trees. Self-contained fixes, nothing risky.

  Current release - new code bugs:

   - dsa: ksz: fix a few bugs found by static-checker in the new driver

   - stmmac: fix frame preemption handshake not triggering after
     interface restart

  Previous releases - regressions:

   - make nla_strcmp handle more then one trailing null character

   - fix stack OOB reads while fragmenting IPv4 packets in openvswitch
     and net/sched

   - sctp: do asoc update earlier in sctp_sf_do_dupcook_a

   - sctp: delay auto_asconf init until binding the first addr

   - stmmac: clear receive all(RA) bit when promiscuous mode is off

   - can: mcp251x: fix resume from sleep before interface was brought up

  Previous releases - always broken:

   - bpf: fix leakage of uninitialized bpf stack under speculation

   - bpf: fix masking negation logic upon negative dst register

   - netfilter: don't assume that skb_header_pointer() will never fail

   - only allow init netns to set default tcp cong to a restricted algo

   - xsk: fix xp_aligned_validate_desc() when len == chunk_size to avoid
     false positive errors

   - ethtool: fix missing NLM_F_MULTI flag when dumping

   - can: m_can: m_can_tx_work_queue(): fix tx_skb race condition

   - sctp: fix a SCTP_MIB_CURRESTAB leak in sctp_sf_do_dupcook_b

   - bridge: fix NULL-deref caused by a races between assigning
     rx_handler_data and setting the IFF_BRIDGE_PORT bit

  Latecomer:

   - seg6: add counters support for SRv6 Behaviors"

* tag 'net-5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (73 commits)
  atm: firestream: Use fallthrough pseudo-keyword
  net: stmmac: Do not enable RX FIFO overflow interrupts
  mptcp: fix splat when closing unaccepted socket
  i40e: Remove LLDP frame filters
  i40e: Fix PHY type identifiers for 2.5G and 5G adapters
  i40e: fix the restart auto-negotiation after FEC modified
  i40e: Fix use-after-free in i40e_client_subtask()
  i40e: fix broken XDP support
  netfilter: nftables: avoid potential overflows on 32bit arches
  netfilter: nftables: avoid overflows in nft_hash_buckets()
  tcp: Specify cmsgbuf is user pointer for receive zerocopy.
  mlxsw: spectrum_mr: Update egress RIF list before route's action
  net: ipa: fix inter-EE IRQ register definitions
  can: m_can: m_can_tx_work_queue(): fix tx_skb race condition
  can: mcp251x: fix resume from sleep before interface was brought up
  can: mcp251xfd: mcp251xfd_probe(): add missing can_rx_offload_del() in error path
  can: mcp251xfd: mcp251xfd_probe(): fix an error pointer dereference in probe
  netfilter: nftables: Fix a memleak from userdata error path in new objects
  netfilter: remove BUG_ON() after skb_header_pointer()
  netfilter: nfnetlink_osf: Fix a missing skb_header_pointer() NULL check
  ...

Merge branch 'akpm' (patches from Andrew)

2021-05-07T07:34:51+00:00

Merge yet more updates from Andrew Morton:
 "This is everything else from -mm for this merge window.

  90 patches.

  Subsystems affected by this patch series: mm (cleanups and slub),
  alpha, procfs, sysctl, misc, core-kernel, bitmap, lib, compat,
  checkpatch, epoll, isofs, nilfs2, hpfs, exit, fork, kexec, gcov,
  panic, delayacct, gdb, resource, selftests, async, initramfs, ipc,
  drivers/char, and spelling"

* emailed patches from Andrew Morton : (90 commits)
  mm: fix typos in comments
  mm: fix typos in comments
  treewide: remove editor modelines and cruft
  ipc/sem.c: spelling fix
  fs: fat: fix spelling typo of values
  kernel/sys.c: fix typo
  kernel/up.c: fix typo
  kernel/user_namespace.c: fix typos
  kernel/umh.c: fix some spelling mistakes
  include/linux/pgtable.h: few spelling fixes
  mm/slab.c: fix spelling mistake "disired" -> "desired"
  scripts/spelling.txt: add "overflw"
  scripts/spelling.txt: Add "diabled" typo
  scripts/spelling.txt: add "overlfow"
  arm: print alloc free paths for address in registers
  mm/vmalloc: remove vwrite()
  mm: remove xlate_dev_kmem_ptr()
  drivers/char: remove /dev/kmem for good
  mm: fix some typos and code style problems
  ipc/sem.c: mundane typo fixes
  ...

tools: sync lib/find_bit implementation

2021-05-07T02:24:12+00:00

Add fast paths to find_*_bit() functions as per kernel implementation.

Link: https://lkml.kernel.org/r/20210401003153.97325-12-yury.norov@gmail.com
Signed-off-by: Yury Norov 
Acked-by: Rasmus Villemoes 
Cc: Alexey Klimov 
Cc: Andy Shevchenko 
Cc: Arnd Bergmann 
Cc: David Sterba 
Cc: Dennis Zhou 
Cc: Geert Uytterhoeven 
Cc: Jianpeng Ma 
Cc: Joe Perches 
Cc: John Paul Adrian Glaubitz 
Cc: Josh Poimboeuf 
Cc: Rich Felker 
Cc: Stefano Brivio 
Cc: Wei Yang 
Cc: Wolfram Sang 
Cc: Yoshinori Sato 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

tools: sync find_next_bit implementation

2021-05-07T02:24:12+00:00

Sync the implementation with recent kernel changes.

Link: https://lkml.kernel.org/r/20210401003153.97325-9-yury.norov@gmail.com
Signed-off-by: Yury Norov 
Acked-by: Rasmus Villemoes 
Cc: Alexey Klimov 
Cc: Andy Shevchenko 
Cc: Arnd Bergmann 
Cc: David Sterba 
Cc: Dennis Zhou 
Cc: Geert Uytterhoeven 
Cc: Jianpeng Ma 
Cc: Joe Perches 
Cc: John Paul Adrian Glaubitz 
Cc: Josh Poimboeuf 
Cc: Rich Felker 
Cc: Stefano Brivio 
Cc: Wei Yang 
Cc: Wolfram Sang 
Cc: Yoshinori Sato 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

tools: bitmap: sync function declarations with the kernel

2021-05-07T02:24:11+00:00

Some functions in tools/include/linux/bitmap.h declare nbits as int.  In
the kernel nbits is declared as unsigned int.

Link: https://lkml.kernel.org/r/20210401003153.97325-3-yury.norov@gmail.com
Signed-off-by: Yury Norov 
Acked-by: Rasmus Villemoes 
Cc: Alexey Klimov 
Cc: Andy Shevchenko 
Cc: Arnd Bergmann 
Cc: David Sterba 
Cc: Dennis Zhou 
Cc: Geert Uytterhoeven 
Cc: Jianpeng Ma 
Cc: Joe Perches 
Cc: John Paul Adrian Glaubitz 
Cc: Josh Poimboeuf 
Cc: Rich Felker 
Cc: Stefano Brivio 
Cc: Wei Yang 
Cc: Wolfram Sang 
Cc: Yoshinori Sato 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

libbpf: Fix signed overflow in ringbuf_process_ring

2021-05-03T16:54:12+00:00

One of our benchmarks running in (Google-internal) CI pushes data
through the ringbuf faster htan than userspace is able to consume
it. In this case it seems we're actually able to get >INT_MAX entries
in a single ring_buffer__consume() call. ASAN detected that cnt
overflows in this case.

Fix by using 64-bit counter internally and then capping the result to
INT_MAX before converting to the int return type. Do the same for
the ring_buffer__poll().

Fixes: bf99c936f947 (libbpf: Add BPF ring buffer support)
Signed-off-by: Brendan Jackman 
Signed-off-by: Andrii Nakryiko 
Link: https://lore.kernel.org/bpf/20210429130510.1621665-1-jackmanb@google.com

Merge tag 'perf-tools-for-v5.13-2021-04-29' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux

2021-05-01T19:22:38+00:00

Pull perf tool updates from Arnaldo Carvalho de Melo:
"perf stat:

- Add support for hybrid PMUs to support systems such as Intel
Alderlake and its BIG/little core/atom cpus.

- Introduce 'bperf' to share hardware PMCs with BPF.

- New --iostat option to collect and present IO stats on Intel
hardware.

This functionality is based on recently introduced sysfs attributes
for Intel® Xeon® Scalable processor family (code name Skylake-SP)
in commit bb42b3d39781 ("perf/x86/intel/uncore: Expose an Uncore
unit to IIO PMON mapping")

It is intended to provide four I/O performance metrics in MB per
each PCIe root port:

- Inbound Read: I/O devices below root port read from the host memory
- Inbound Write: I/O devices below root port write to the host memory
- Outbound Read: CPU reads from I/O devices below root port
- Outbound Write: CPU writes to I/O devices below root port

- Align CSV output for summary.

- Clarify --null use cases: Assess raw overhead of 'perf stat' or
measure just wall clock time.

- Improve readability of shadow stats.

perf record:

- Change the COMM when starting tha workload so that --exclude-perf
doesn't seem to be not honoured.

- Improve 'Workload failed' message printing events + what was
exec'ed.

- Fix cross-arch support for TIME_CONV.

perf report:

- Add option to disable raw event ordering.

- Dump the contents of PERF_RECORD_TIME_CONV in 'perf report -D'.

- Improvements to --stat output, that shows information about
PERF_RECORD_ events.

- Preserve identifier id in OCaml demangler.

perf annotate:

- Show full source location with 'l' hotkey in the 'perf annotate'
TUI.

- Add line number like in TUI and source location at EOL to the 'perf
annotate' --stdio mode.

- Add --demangle and --demangle-kernel to 'perf annotate'.

- Allow configuring annotate.demangle{,_kernel} in 'perf config'.

- Fix sample events lost in stdio mode.

perf data:

- Allow converting a perf.data file to JSON.

libperf:

- Add support for user space counter access.

- Update topdown documentation to permit rdpmc calls.

perf test:

- Add 'perf test' for 'perf stat' CSV output.

- Add 'perf test' entries to test the hybrid PMU support.

- Cleanup 'perf test daemon' if its 'perf test' is interrupted.

- Handle metric reuse in pmu-events parsing 'perf test' entry.

- Add test for PE executable support.

- Add timeout for wait for daemon start in its 'perf test' entries.

Build:

- Enable libtraceevent dynamic linking.

- Improve feature detection output.

- Fix caching of feature checks caching.

- First round of updates for tools copies of kernel headers.

- Enable warnings when compiling BPF programs.

Vendor specific events:

- Intel:
- Add missing skylake & icelake model numbers.

- arm64:
- Add Hisi hip08 L1, L2 and L3 metrics.
- Add Fujitsu A64FX PMU events.

- PowerPC:
- Initial JSON/events list for power10 platform.
- Remove unsupported power9 metrics.

- AMD:
- Add Zen3 events.
- Fix broken L2 Cache Hits from L2 HWPF metric.
- Use lowercases for all the eventcodes and umasks.

Hardware tracing:

- arm64:
- Update CoreSight ETM metadata format.
- Fix bitmap for CS-ETM option.
- Support PID tracing in config.
- Detect pid in VMID for kernel running at EL2.

Arch specific updates:

- MIPS:
- Support MIPS unwinding and dwarf-regs.
- Generate mips syscalls_n64.c syscall table.

- PowerPC:
- Add support for PERF_SAMPLE_WEIGH_STRUCT on PowerPC.
- Support pipeline stage cycles for powerpc.

libbeauty:

- Fix fsconfig generator"

* tag 'perf-tools-for-v5.13-2021-04-29' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux: (132 commits)
perf build: Defer printing detected features to the end of all feature checks
tools build: Allow deferring printing the results of feature detection
perf build: Regenerate the FEATURE_DUMP file after extra feature checks
perf session: Dump PERF_RECORD_TIME_CONV event
perf session: Add swap operation for event TIME_CONV
perf jit: Let convert_timestamp() to be backwards-compatible
perf tools: Change fields type in perf_record_time_conv
perf tools: Enable libtraceevent dynamic linking
perf Documentation: Document intel-hybrid support
perf tests: Skip 'perf stat metrics (shadow stat) test' for hybrid
perf tests: Support 'Convert perf time to TSC' test for hybrid
perf tests: Support 'Session topology' test for hybrid
perf tests: Support 'Parse and process metrics' test for hybrid
perf tests: Support 'Track with sched_switch' test for hybrid
perf tests: Skip 'Setup struct perf_event_attr' test for hybrid
perf tests: Add hybrid cases for 'Roundtrip evsel->name' test
perf tests: Add hybrid cases for 'Parse event definition strings' test
perf record: Uniquify hybrid event name
perf stat: Warn group events from different hybrid PMU
perf stat: Filter out unmatched aggregation for hybrid event
...

perf jit: Let convert_timestamp() to be backwards-compatible

2021-04-29T13:31:00+00:00

Commit d110162cafc80dad ("perf tsc: Support cap_user_time_short for
event TIME_CONV") supports the extended parameters for event TIME_CONV,
but it broke the backwards compatibility, so any perf data file with old
event format fails to convert timestamp.

This patch introduces a helper event_contains() to check if an event
contains a specific member or not.  For the backwards-compatibility, if
the event size confirms the extended parameters are supported in the
event TIME_CONV, then copies these parameters.

Committer notes:

To make this compiler backwards compatible add this patch:

  -       struct perf_tsc_conversion tc = { 0 };
  +       struct perf_tsc_conversion tc = { .time_shift = 0, };

Fixes: d110162cafc8 ("perf tsc: Support cap_user_time_short for event TIME_CONV")
Signed-off-by: Leo Yan 
Acked-by: Adrian Hunter 
Cc: Alexander Shishkin 
Cc: Gustavo A. R. Silva 
Cc: Ingo Molnar 
Cc: Jiri Olsa 
Cc: Kan Liang 
Cc: Mark Rutland 
Cc: Namhyung Kim 
Cc: Peter Zijlstra 
Cc: Steve MacLean 
Cc: Yonatan Goldschmidt 
Link: https://lore.kernel.org/r/20210428120915.7123-3-leo.yan@linaro.org
Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Change fields type in perf_record_time_conv

2021-04-29T13:31:00+00:00

C standard claims "An object declared as type _Bool is large enough to
store the values 0 and 1", bool type size can be 1 byte or larger than
1 byte.  Thus it's uncertian for bool type size with different
compilers.

This patch changes the bool type in structure perf_record_time_conv to
__u8 type, and pads extra bytes for 8-byte alignment; this can give
reliable structure size.

Fixes: d110162cafc8 ("perf tsc: Support cap_user_time_short for event TIME_CONV")
Suggested-by: Adrian Hunter 
Signed-off-by: Leo Yan 
Acked-by: Adrian Hunter 
Cc: Alexander Shishkin 
Cc: Gustavo A. R. Silva 
Cc: Ingo Molnar 
Cc: Jiri Olsa 
Cc: Kan Liang 
Cc: Mark Rutland 
Cc: Namhyung Kim 
Cc: Peter Zijlstra 
Cc: Steve MacLean 
Cc: Yonatan Goldschmidt 
Link: https://lore.kernel.org/r/20210428120915.7123-2-leo.yan@linaro.org
Signed-off-by: Arnaldo Carvalho de Melo

perf util: Move bpf_perf definitions to a libperf header

2021-04-29T13:30:58+00:00

By following the same protocol, other tools can share hardware PMCs with
perf. Move perf_event_attr_map_entry and BPF_PERF_DEFAULT_ATTR_MAP_PATH to
bpf_perf.h for other tools to use.

Signed-off-by: Song Liu 
Cc: Jiri Olsa 
Cc: Namhyung Kim 
Cc: Song Liu 
Cc: kernel-team@fb.com
Link: https://lore.kernel.org/r/20210425214333.1090950-2-song@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo