Martin KaFai Lau
db5be03922
UPSTREAM: bpf: btf: Add pretty print support to the basic arraymap ...
This patch adds pretty print support to the basic arraymap.
Support for other bpf maps can be added later.
This patch adds new attrs to the BPF_MAP_CREATE command to allow
specifying the btf_fd, btf_key_id and btf_value_id. The
BPF_MAP_CREATE can then associate the btf to the map if
the creating map supports BTF.
A BTF supported map needs to implement two new map ops,
map_seq_show_elem() and map_check_btf(). This patch has
implemented these new map ops for the basic arraymap.
It also adds file_operations, bpffs_map_fops, to the pinned
map such that the pinned map can be opened and read.
After that, the user has an intuitive way to do
"cat bpffs/pathto/a-pinned-map" instead of getting
an error.
bpffs_map_fops should not be extended further to support
other operations. Other operations (e.g. write/key-lookup...)
should be realized by the userspace tools (e.g. bpftool) through
the BPF_OBJ_GET_INFO_BY_FD, map's lookup/update interface...etc.
Follow up patches will allow the userspace to obtain
the BTF from a map-fd.
Here is a sample output when reading a pinned arraymap
with the following map's value:
struct map_value {
int count_a;
int count_b;
};
cat /sys/fs/bpf/pinned_array_map:
0: {1,2}
1: {3,4}
2: {5,6}
...
Change-Id: I57605a80ce783f8545f7947d0a3445ccd81147e4
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Acked-by: Alexei Starovoitov <ast@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Sorayukii <sorayukii69@gmail.com>
2026-05-15 17:56:20 +07:00
UPSTREAM: bpf: btf: Add pretty print support to the basic arraymap
2026-05-15 17:56:20 +07:00
BACKPORT: bpf: introduce BPF_PROG_QUERY command
2026-05-15 17:55:48 +07:00
UPSTREAM: kdb: use correct pointer when 'btc' calls 'btt'
2022-02-21 16:30:05 +01:00
UPSTREAM: bpf/tracing: fix kernel/events/core.c compilation error
2026-05-15 17:55:59 +07:00
Merge branch 'android-4.9-q' of https://android.googlesource.com/kernel/common into lineage-20
2023-01-19 15:42:12 +01:00
Merge remote-tracking branch 'common/android-4.9-q' into android12-4.9-sdm845
2022-07-18 14:05:31 +03:00
BACKPORT: rcu: Ports some of RCU's taken from k4.14
2026-05-15 17:49:30 +07:00
treewide: Backport new vmalloc for large performance benefits
2026-05-15 17:48:25 +07:00
Merge remote-tracking branch 'common/android-4.9-q' into android12-4.9-sdm845
2022-06-12 01:39:01 +03:00
rcu: Fix self-wakeups for grace-period kthread
2026-05-15 17:49:36 +07:00
cpuset: Remove cpuset_update_active_cpus()'s parameter.
2026-05-15 17:50:33 +07:00
BACKPORT: rcu: Ports some of RCU's taken from k4.14
2026-05-15 17:49:30 +07:00
UPSTREAM: bpf/tracing: fix a deadlock in perf_event_detach_bpf_prog
2026-05-15 17:56:16 +07:00
BACKPORT: Provide in-kernel headers to make extending kernel easier
2019-07-03 14:30:53 -04:00
acct: fix potential integer overflow in encode_comp_t()
2023-01-07 12:07:31 +01:00
Merge branch 'android-4.9-q' of https://android.googlesource.com/kernel/common into lineage-18.1-caf-sdm845
2021-04-26 01:27:02 +03:00
audit: fix a net reference leak in audit_list_rules_send()
2021-04-07 12:05:41 +02:00
audit: CONFIG_CHANGE don't log internal bookkeeping as an event
2020-10-01 20:40:07 +02:00
audit: fix a net reference leak in audit_list_rules_send()
2021-04-07 12:05:41 +02:00
Merge android-4.9.204(72e8598) into msm-4.9
2020-01-06 18:13:26 +08:00
kbuild: fix kernel/bounds.c 'W=1' warning
2018-11-13 11:16:57 -08:00
ANDROID: cfi: Remove unused variable in ptr_to_check_fn
2019-03-06 18:27:16 +00:00
rcu: Migrate callbacks earlier in the CPU-offline timeline
2026-05-15 17:49:31 +07:00
Merge branch 'android-4.9-q' of https://android.googlesource.com/kernel/common into HEAD
2020-06-30 02:33:58 +03:00
memcg: account security cred as well to kmemcg
2020-01-12 11:24:13 +01:00
BACKPORT: delayacct: track delays from thrashing cache pages
2019-03-22 14:08:39 -07:00
cgroup: Call cgroup_release() before __exit_signal()
2026-05-15 17:50:40 +07:00
BACKPORT: bpf: make jited programs visible in traces
2026-05-15 17:54:30 +07:00
BACKPORT: cgroup: cgroup v2 freezer
2026-05-15 17:50:46 +07:00
mm, futex: fix shared futex pgoff on shmem huge page
2021-07-11 12:46:40 +02:00
BACKPORT: kheaders: Do not regenerate archive if config is not changed
2019-07-03 14:31:16 -04:00
treewide: Backport new vmalloc for large performance benefits
2026-05-15 17:48:25 +07:00
Merge android-4.9.170 ( 1ef64da) into msm-4.9
2019-05-30 14:15:13 +08:00
jump_label: Disable jump labels in __exit code
2021-06-06 18:42:18 +03:00
/proc/module: use the same logic as /proc/kallsyms for address exposure
2026-05-15 17:55:46 +07:00
locking/rwsem: for rwsem prio aware enhancement
2019-01-08 16:14:39 +08:00
This is the 4.9.117 stable release
2018-08-03 08:50:05 +02:00
treewide: Backport new vmalloc for large performance benefits
2026-05-15 17:48:25 +07:00
Merge remote-tracking branch 'common/android-4.9-q' into android12-4.9-sdm845
2022-07-18 14:05:31 +03:00
BACKPORT: kheaders: Move from proc to sysfs
2019-07-03 14:31:02 -04:00
usermodehelper: reset umask to default before executing user process
2020-10-14 09:48:14 +02:00
UPSTREAM: add infrastructure for tagging functions as error injectable
2026-05-15 17:55:59 +07:00
Merge branch 'android-4.9-q' of https://android.googlesource.com/kernel/common into lineage-18.1-caf-sdm845
2021-07-22 02:11:11 +03:00
cgroup: move cgroup files under kernel/cgroup/
2026-05-15 17:50:29 +07:00
mm, devm_memremap_pages: kill mapping "System RAM" support
2019-01-13 10:03:51 +01:00
UPSTREAM: add infrastructure for tagging functions as error injectable
2026-05-15 17:55:59 +07:00
x86/mm: split vmalloc_sync_all()
2020-04-02 17:20:26 +02:00
padata: purge get_cpu and reorder_via_wq from padata_do_serial
2020-05-27 16:41:53 +02:00
BACKPORT: locking/refcount: Create unchecked atomic_t implementation
2026-05-15 17:54:59 +07:00
UPSTREAM: locking/atomic, kref: Add KREF_INIT()
2021-01-05 16:00:48 +00:00
memcg: enable accounting for pids in nested pid namespaces
2021-09-22 11:43:08 +02:00
profiling: fix shift-out-of-bounds bugs
2021-09-26 13:36:18 +02:00
ptrace: Reimplement PTRACE_KILL by always sending SIGKILL
2022-06-14 16:52:28 +02:00
reboot: fix overflow parsing reboot cpu number
2020-11-18 18:26:32 +01:00
kernel/relay.c: fix memleak on destroy relay channel
2020-08-26 10:29:03 +02:00
BACKPORT: bpf: drop unnecessary context cast from BPF_PROG_RUN
2026-05-15 17:54:14 +07:00
BACKPORT: cgroup: freezer: call cgroup_enter_frozen() with preemption disabled in ptrace_stop()
2026-05-15 17:50:47 +07:00
Merge remote-tracking branch 'common/android-4.9-q' into android12-4.9-sdm845
2022-06-12 01:39:01 +03:00
sched/walt: Fix the memory leak of idle task load pointers
2018-09-20 19:00:55 +05:30
Mark HI and TASKLET softirq synchronous
2018-08-15 18:14:42 +02:00
stop_machine: Use raw spinlocks
2018-08-03 07:55:24 +02:00
Merge remote-tracking branch 'common/android-4.9-q' into lineage-18.1-caf-sdm845
2021-10-19 16:05:50 +03:00
BACKPORT: signal: support CLONE_PIDFD with pidfd_send_signal
2019-09-03 13:44:59 -07:00
Revert "add toggle for disabling newly added USB devices"
2023-03-01 21:14:36 +02:00
taskstats: fix data-race
2020-01-12 11:24:12 +01:00
tracepoint: Do not fail unregistering a probe due to memory failure
2021-03-03 17:44:38 +01:00
taskstats: Cleanup the use of task->exit_code
2022-02-23 11:56:40 +01:00
userns: move user access out of the mutex
2018-09-09 20:01:24 +02:00
sys: don't hold uts_sem while accessing userspace memory
2018-09-09 20:01:24 +02:00
rcu: Create RCU-specific workqueues with rescuers
2026-05-15 17:49:31 +07:00
UPSTREAM: psi: fix aggregation idle shut-off
2019-03-22 14:15:01 -07:00
db5be03922