mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2026-05-21 09:05:20 -04:00
de68c05189
Receive tools/sched_ext updates form https://github.com/sched-ext/scx to sync userspace bits: - basic BPF arena allocator abstractions, - additional process flags definitions, - fixed is_migration_disabled() helper, - separate out user_exit_info BPF and user space code. This also fixes the following warning when building the selftests: tools/sched_ext/include/scx/common.bpf.h:550:9: warning: 'likely' macro redefined [-Wmacro-redefined] 550 | #define likely(x) __builtin_expect(!!(x), 1) | ^ Co-developed-by: Cheng-Yang Chou <yphbchou0911@gmail.com> Signed-off-by: Andrea Righi <arighi@nvidia.com> Signed-off-by: Tejun Heo <tj@kernel.org>
41 lines
1.3 KiB
C
41 lines
1.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* Define struct user_exit_info which is shared between BPF and userspace parts
|
|
* to communicate exit status and other information.
|
|
*
|
|
* Copyright (c) 2022 Meta Platforms, Inc. and affiliates.
|
|
* Copyright (c) 2022 Tejun Heo <tj@kernel.org>
|
|
* Copyright (c) 2022 David Vernet <dvernet@meta.com>
|
|
*/
|
|
|
|
#ifndef __USER_EXIT_INFO_BPF_H
|
|
#define __USER_EXIT_INFO_BPF_H
|
|
|
|
#ifndef LSP
|
|
#include "vmlinux.h"
|
|
#endif
|
|
#include <bpf/bpf_core_read.h>
|
|
|
|
#include "user_exit_info_common.h"
|
|
|
|
#define UEI_DEFINE(__name) \
|
|
char RESIZABLE_ARRAY(data, __name##_dump); \
|
|
const volatile u32 __name##_dump_len; \
|
|
struct user_exit_info __name SEC(".data")
|
|
|
|
#define UEI_RECORD(__uei_name, __ei) ({ \
|
|
bpf_probe_read_kernel_str(__uei_name.reason, \
|
|
sizeof(__uei_name.reason), (__ei)->reason); \
|
|
bpf_probe_read_kernel_str(__uei_name.msg, \
|
|
sizeof(__uei_name.msg), (__ei)->msg); \
|
|
bpf_probe_read_kernel_str(__uei_name##_dump, \
|
|
__uei_name##_dump_len, (__ei)->dump); \
|
|
if (bpf_core_field_exists((__ei)->exit_code)) \
|
|
__uei_name.exit_code = (__ei)->exit_code; \
|
|
/* use __sync to force memory barrier */ \
|
|
__sync_val_compare_and_swap(&__uei_name.kind, __uei_name.kind, \
|
|
(__ei)->kind); \
|
|
})
|
|
|
|
#endif /* __USER_EXIT_INFO_BPF_H */
|