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1501. By Brad Smith on 2024-06-04

Adjust shell script to allow Bash in other locations

commit da56d5cad05a ("Adjust shell scripts to allow Bash in other locations")
adjusted most of the shell scripts, except one.

Signed-off-by: Brad Smith <email address hidden>
Signed-off-by: Mathieu Desnoyers <email address hidden>
Change-Id: I30ee8cb36d874f5eaadf7b17c60cfd362ecfa2f0

1500. By Mathieu Desnoyers on 2024-06-03

futex.h: Indent preprocessor directives

Signed-off-by: Mathieu Desnoyers <email address hidden>
Change-Id: I45f64007244dc3143cff81c6957a7c2e0a3003bd

1499. By Mathieu Desnoyers on 2024-06-03

futex.h: Use urcu_posix_assert to validate unused values

When building on FreeBSD, uaddr2 and val3 are unused. Add a
urcu_posix_assert() to validate that they are zero and hence allow users
of the API to quickly figure out that those are not effectively used.

When building on OpenBSD, val3 is unused. Add a urcu_posix_assert() to
validate that it is zero.

Those asserts are already present in the compat code. Use the same
mechanism to prevent users from expecting futex arguments to be used
when they are in fact discarded.

Signed-off-by: Mathieu Desnoyers <email address hidden>
Change-Id: I4e69d240c6f07da471e6af083854440c060ef53b

1498. By Brad Smith on 2024-06-03

Use futex on OpenBSD

Tested with "make check", "make regtest".

Signed-off-by: Brad Smith <email address hidden>
Signed-off-by: Mathieu Desnoyers <email address hidden>
Change-Id: Icd334cda928f998a2cf455839d428ebbb4460f5e

1497. By Benjamin Marzinski via lttng-dev <email address hidden> on 2024-05-02

fix: handle EINTR correctly in get_cpu_mask_from_sysfs

If the read() in get_cpu_mask_from_sysfs() fails with EINTR, the code is
supposed to retry, but the while loop condition has (bytes_read > 0),
which is false when read() fails with EINTR. The result is that the code
exits the loop, having only read part of the string.

Use (bytes_read != 0) in the while loop condition instead, since the
(bytes_read < 0) case is already handled in the loop.

Signed-off-by: Benjamin Marzinski <email address hidden>
Signed-off-by: Mathieu Desnoyers <email address hidden>
Change-Id: I565030d4625ae199cabc4c2ab5eb8ac49ea4dfcb

1496. By Mathieu Desnoyers on 2024-05-02

Relicense src/compat-smp.h to MIT

Relicense the code in src/compat-smp.h from LGPLv2.1 to MIT to match the
copies in the following projects:

- lttng-ust
- libside
- librseq

This code is entirely authored by EfficiOS.

This relicensing initially appeared in the lttng-ust project after
the code was imported into liburcu:

  commit 4159f02937a2740abd7f5b113f376b198a86bc71 (test-struct-tls)
  Author: Mathieu Desnoyers <email address hidden>
  Date: Tue Oct 25 12:32:12 2022 -0400

      Relicense common/smp.c common/smp.h to MIT

Signed-off-by: Mathieu Desnoyers <email address hidden>
Change-Id: Ib7edb6c18fd3c004503b9c023ba4e280241ede14

1495. By Olivier Dion <email address hidden> on 2024-04-12

uatomic/x86: Remove redundant memory barriers

When liburcu is configured to _not_ use atomic builtins, the
implementation of atomic operations is done using inline assembler for
each architecture.

Because we control the emitted assembler, we know whether specific
operations (e.g. lock; cmpxchg) already have an implicit memory barrier.
In those cases, emitting an explicit cmm_smp_mb() before/after the
operation is redundant and hurts performance.

Remove those redundant barriers on x86.

Change-Id: Ic1f6cfe9c2afe250946549cf6187f8fa88f5b009
Signed-off-by: Olivier Dion <email address hidden>
Signed-off-by: Mathieu Desnoyers <email address hidden>

1494. By Michael Jeanson <email address hidden> on 2024-04-12

cleanup: move rand_r compat code to tests

This compat code is only used in the tests, move it there as it should
probably not be used in the library.

Change-Id: I0a36e790c236bb90d07a711af9cc6f8388fa4c81
Signed-off-by: Michael Jeanson <email address hidden>
Signed-off-by: Mathieu Desnoyers <email address hidden>

1493. By Mathieu Desnoyers on 2024-04-11

ppc: Document cache line size choice

Signed-off-by: Mathieu Desnoyers <email address hidden>
Change-Id: I63603aaf5529e9a7810cfeffe19f32aea0dd13df

1492. By Mathieu Desnoyers on 2024-02-15

Fix: change order of _cds_lfht_new_with_alloc parameters

The "flavor" parameter should come before the "alloc" parameter
to match the order of cds_lfht_new_with_flavor_alloc() parameters.

Signed-off-by: Mathieu Desnoyers <email address hidden>
Change-Id: Ia704a0fd9cb90af966464e25e6202fed1a952eed