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tools/sched_ext: Receive misc updates from SCX repo

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Receive misc tools/sched_ext updates from https://github.com/sched-ext/scx
to sync userspace bits.

- LSP macros to help language servers.

- bpf_cpumask_weight() declaration and cast_mask() helper.

- Cosmetic updates to scx_flatcg.bpf.c.

Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Tejun Heo 2024-09-25 12:22:37 -10:00
parent 1e123fd73d
commit a748db0c8c
3 changed files with 21 additions and 3 deletions
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15
tools/sched_ext/include/scx/common.bpf.h
View File

@ -7,7 +7,13 @@
#ifndef __SCX_COMMON_BPF_H
#define __SCX_COMMON_BPF_H
#ifdef LSP
#define __bpf__
#include "../vmlinux/vmlinux.h"
#else
#include "vmlinux.h"
#endif
#include <bpf/bpf_helpers.h>
#include <bpf/bpf_tracing.h>
#include <asm-generic/errno.h>
@ -309,6 +315,15 @@ void bpf_cpumask_copy(struct bpf_cpumask *dst, const struct cpumask *src) __ksym
u32 bpf_cpumask_any_distribute(const struct cpumask *cpumask) __ksym;
u32 bpf_cpumask_any_and_distribute(const struct cpumask *src1,
const struct cpumask *src2) __ksym;
u32 bpf_cpumask_weight(const struct cpumask *cpumask) __ksym;
/*
* Access a cpumask in read-only mode (typically to check bits).
*/
const struct cpumask *cast_mask(struct bpf_cpumask *mask)
{
return (const struct cpumask *)mask;
}
/* rcu */
void bpf_rcu_read_lock(void) __ksym;

4
tools/sched_ext/include/scx/user_exit_info.h
View File

@ -25,7 +25,11 @@ struct user_exit_info {
#ifdef __bpf__
#ifdef LSP
#include "../vmlinux/vmlinux.h"
#else
#include "vmlinux.h"
#endif
#include <bpf/bpf_core_read.h>
#define UEI_DEFINE(__name) \

5
tools/sched_ext/scx_flatcg.bpf.c
View File

@ -225,7 +225,7 @@ static void cgrp_refresh_hweight(struct cgroup *cgrp, struct fcg_cgrp_ctx *cgc)
break;
/*
* We can be oppotunistic here and not grab the
* We can be opportunistic here and not grab the
* cgv_tree_lock and deal with the occasional races.
* However, hweight updates are already cached and
* relatively low-frequency. Let's just do the
@ -258,8 +258,7 @@ static void cgrp_cap_budget(struct cgv_node *cgv_node, struct fcg_cgrp_ctx *cgc)
* and thus can't be updated and repositioned. Instead, we collect the
* vtime deltas separately and apply it asynchronously here.
*/
delta = cgc->cvtime_delta;
__sync_fetch_and_sub(&cgc->cvtime_delta, delta);
delta = __sync_fetch_and_sub(&cgc->cvtime_delta, cgc->cvtime_delta);
cvtime = cgv_node->cvtime + delta;
/*