[all-commits] [llvm/llvm-project] 943d19: [libc] Fix sched_getscheduler return value

[Mikhail R. Gadelha via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 943d194fd90fc943fd0b99cf987c1b118f8edaad
      https://github.com/llvm/llvm-project/commit/943d194fd90fc943fd0b99cf987c1b118f8edaad
  Author: Mikhail R. Gadelha <mikhail at igalia.com>
  Date:   2023-08-01 (Tue, 01 Aug 2023)

  Changed paths:
    M libc/src/sched/linux/sched_getscheduler.cpp
    M libc/src/sched/linux/sched_setscheduler.cpp
    M libc/test/src/sched/param_and_scheduler_test.cpp

  Log Message:
  -----------
  [libc] Fix sched_getscheduler return value

This patch fixes the return time for sched_getscheduler which was set to
always zero. The syscall documentation, however, defines:

On success, sched_getscheduler() returns the policy for the thread (a
nonnegative integer).

I also changed the return type for sched_setscheduler, but this change
didn't impact and test case.

This patch also removes the duplicated code from param_and_scheduler_test.cpp
and adds SCHED_BATCH and SCHED_IDLE to the tests.

Reviewed By: michaelrj

Differential Revision: https://reviews.llvm.org/D156700