TWx Linux Repository
bc8198dc7e
- scx_bpf_now() added so that BPF scheduler can access the cached timestamp
in struct rq to avoid reading TSC multiple times within a locked
scheduling operation.
- Minor updates to the built-in idle CPU selection logic.
- tool/sched_ext updates and other misc changes.
Pulling sched_ext/for-6.14 into master causes a merge conflict between the
following two commits (first commit in master, second in for-6.14):
a2a3374c47c4 sched_ext: idle: Refresh idle masks during idle-to-idle transitions
9cf9aceed21e sched_ext: idle: use assign_cpu() to update the idle cpumask
static void update_builtin_idle(int cpu, bool idle)
{
<<<<<<< HEAD
if (idle)
cpumask_set_cpu(cpu, idle_masks.cpu);
else
cpumask_clear_cpu(cpu, idle_masks.cpu);
=======
int cpu = cpu_of(rq);
if (SCX_HAS_OP(update_idle) && !scx_rq_bypassing(rq)) {
SCX_CALL_OP(SCX_KF_REST, update_idle, cpu_of(rq), idle);
if (!static_branch_unlikely(&scx_builtin_idle_enabled))
return;
}
assign_cpu(cpu, idle_masks.cpu, idle);
>>>>>>> 987ce79b5242c048acae3a0c1feaae0a353d5cde
The first commit factored out update_builtin_idle() and the second replaced
cpumask_set/clear_cpu() calls with assign_cpu(). The conflict can be
resolved by taking the code from the first and then replacing the
cpumask_set/clear_cpu() calls with assign_cpu():
static void update_builtin_idle(int cpu, bool idle)
{
assign_cpu(cpu, idle_masks.cpu, idle);
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Merge tag 'sched_ext-for-6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext
Pull sched_ext updates from Tejun Heo:
- scx_bpf_now() added so that BPF scheduler can access the cached
timestamp in struct rq to avoid reading TSC multiple times within a
locked scheduling operation.
- Minor updates to the built-in idle CPU selection logic.
- tool/sched_ext updates and other misc changes.
* tag 'sched_ext-for-6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext:
sched_ext: fix kernel-doc warnings
sched_ext: Use time helpers in BPF schedulers
sched_ext: Replace bpf_ktime_get_ns() to scx_bpf_now()
sched_ext: Add time helpers for BPF schedulers
sched_ext: Add scx_bpf_now() for BPF scheduler
sched_ext: Implement scx_bpf_now()
sched_ext: Relocate scx_enabled() related code
sched_ext: Add option -l in selftest runner to list all available tests
sched_ext: Include remaining task time slice in error state dump
sched_ext: update scx_bpf_dsq_insert() doc for SCX_DSQ_LOCAL_ON
sched_ext: idle: small CPU iteration refactoring
sched_ext: idle: introduce check_builtin_idle_enabled() helper
sched_ext: idle: clarify comments
sched_ext: idle: use assign_cpu() to update the idle cpumask
sched_ext: Use str_enabled_disabled() helper in update_selcpu_topology()
sched_ext: Use sizeof_field for key_len in dsq_hash_params
tools/sched_ext: Receive updates from SCX repo
sched_ext: Use the NUMA scheduling domain for NUMA optimizations
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.