[PATCH net-next v2 0/6] rust: Add IO polling

[FUJITA Tomonori]

Add Rust version of read_poll_timeout (include/linux/iopoll.h), which
polls periodically until a condition is met or a timeout is reached.
By using the function, the 6th patch fixes QT2025 PHY driver to sleep
until the hardware becomes ready.

As a result of the past discussion, this introduces a new type
representing a span of time instead of using core::time::Duration or
time::Ktime.

Unlike the old rust branch, This adds a wrapper for fsleep() instead
of msleep(). fsleep() automatically chooses the best sleep method
based on a duration.

v2:
- Introduce time::Delta instead of core::time::Duration
- Add some trait to Ktime for calculating timeout
- Use read_poll_timeout in QT2025 driver instead of using fsleep directly
v1: https://lore.kernel.org/netdev/20241001112512.4861-1-fujita.tomonori@xxxxxxxxx/


FUJITA Tomonori (6):
  rust: time: Implement PartialEq and PartialOrd for Ktime
  rust: time: Introduce Delta type
  rust: time: Implement addition of Ktime and Delta
  rust: time: add wrapper for fsleep function
  rust: Add read_poll_timeout function
  net: phy: qt2025: wait until PHY becomes ready

 drivers/net/phy/qt2025.rs |  11 +++-
 rust/helpers/helpers.c    |   2 +
 rust/helpers/kernel.c     |  13 +++++
 rust/helpers/time.c       |  19 +++++++
 rust/kernel/error.rs      |   1 +
 rust/kernel/io.rs         |   5 ++
 rust/kernel/io/poll.rs    |  70 +++++++++++++++++++++++
 rust/kernel/lib.rs        |   1 +
 rust/kernel/time.rs       | 113 ++++++++++++++++++++++++++++++++++++++
 9 files changed, 234 insertions(+), 1 deletion(-)
 create mode 100644 rust/helpers/kernel.c
 create mode 100644 rust/helpers/time.c
 create mode 100644 rust/kernel/io.rs
 create mode 100644 rust/kernel/io/poll.rs


base-commit: d521db38f339709ccd23c5deb7663904e626c3a6
-- 
2.34.1