linux_dsm_epyc7002/kernel
Yonghong Song 16f07c551e bpf: implement syscall command BPF_MAP_GET_NEXT_KEY for stacktrace map
Currently, bpf syscall command BPF_MAP_GET_NEXT_KEY is not
supported for stacktrace map. However, there are use cases where
user space wants to enumerate all stacktrace map entries where
BPF_MAP_GET_NEXT_KEY command will be really helpful.
In addition, if user space wants to delete all map entries
in order to save memory and does not want to close the
map file descriptor, BPF_MAP_GET_NEXT_KEY may help improve
performance if map entries are sparsely populated.

The implementation has similar behavior for
BPF_MAP_GET_NEXT_KEY implementation in hashtab. If user provides
a NULL key pointer or an invalid key, the first key is returned.
Otherwise, the first valid key after the input parameter "key"
is returned, or -ENOENT if no valid key can be found.

Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-01-06 23:52:22 +01:00
..
bpf bpf: implement syscall command BPF_MAP_GET_NEXT_KEY for stacktrace map 2018-01-06 23:52:22 +01:00
cgroup Revert "cgroup/cpuset: remove circular dependency deadlock" 2017-12-04 14:55:59 -08:00
configs
debug kdb: Fix handling of kallsyms_symbol_next() return value 2017-12-06 16:12:43 -06:00
events Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next 2017-12-18 10:51:06 -05:00
gcov
irq genirq/matrix: Fix the precedence fix for real 2017-12-04 20:50:35 +01:00
livepatch
locking locking/lockdep: Remove the cross-release locking checks 2017-12-12 12:38:51 +01:00
power Revert "cpuset: Make cpuset hotplug synchronous" 2017-12-04 14:41:11 -08:00
printk remove task and stack pointer printout from oops dump 2017-12-05 08:23:20 -08:00
rcu
sched sched/rt: Do not pull from current CPU if only one CPU to pull 2017-12-15 16:28:02 +01:00
time posix-timer: Properly check sigevent->sigev_notify 2017-12-15 11:08:40 +01:00
trace Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-12-29 15:42:26 -05:00
.gitignore
acct.c
async.c
audit_fsnotify.c
audit_tree.c
audit_watch.c
audit.c
audit.h
auditfilter.c
auditsc.c
backtracetest.c
bounds.c
capability.c
compat.c
configs.c
context_tracking.c
cpu_pm.c
cpu.c Merge branch 'smp-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-12-06 17:45:36 -08:00
crash_core.c kdump: print a message in case parse_crashkernel_mem resulted in zero bytes 2017-11-17 16:10:03 -08:00
crash_dump.c
cred.c
delayacct.c
dma.c
elfcore.c
exec_domain.c
exit.c arch: define weak abort() 2017-12-14 16:00:49 -08:00
extable.c
fork.c Merge branch 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-12-23 11:53:04 -08:00
freezer.c
futex_compat.c
futex.c futex: futex_wake_op, fix sign_extend32 sign bits 2017-12-10 12:50:57 -08:00
groups.c kernel: make groups_sort calling a responsibility group_info allocators 2017-12-14 16:00:49 -08:00
hung_task.c
irq_work.c
jump_label.c
kallsyms.c kallsyms: take advantage of the new '%px' format 2017-11-29 10:30:13 -08:00
kcmp.c
Kconfig.freezer
Kconfig.hz
Kconfig.locks
Kconfig.preempt
kcov.c kcov: fix comparison callback signature 2017-12-14 16:00:48 -08:00
kexec_core.c
kexec_file.c
kexec_internal.h
kexec.c
kmod.c
kprobes.c add infrastructure for tagging functions as error injectable 2017-12-12 08:56:26 -08:00
ksysfs.c
kthread.c treewide: Remove TIMER_FUNC_TYPE and TIMER_DATA_TYPE casts 2017-11-21 16:35:54 -08:00
latencytop.c
Makefile
memremap.c
module_signing.c
module-internal.h
module.c add infrastructure for tagging functions as error injectable 2017-12-12 08:56:26 -08:00
notifier.c
nsproxy.c
padata.c treewide: setup_timer() -> timer_setup() 2017-11-21 15:57:07 -08:00
panic.c kernel/panic.c: add TAINT_AUX 2017-11-17 16:10:04 -08:00
params.c
pid_namespace.c pid: remove pidhash 2017-11-17 16:10:04 -08:00
pid.c pid: remove pidhash 2017-11-17 16:10:04 -08:00
profile.c
ptrace.c
range.c
reboot.c kernel/reboot.c: add devm_register_reboot_notifier() 2017-11-17 16:10:04 -08:00
relay.c
resource.c
seccomp.c locking/barriers: Convert users of lockless_dereference() to READ_ONCE() 2017-12-17 13:57:15 +01:00
signal.c Merge branch 'akpm' (patches from Andrew) 2017-11-17 16:56:17 -08:00
smp.c
smpboot.c
smpboot.h
softirq.c
stacktrace.c
stop_machine.c
sys_ni.c
sys.c
sysctl_binary.c
sysctl.c kernel/sysctl.c: code cleanups 2017-11-17 16:10:03 -08:00
task_work.c locking/barriers: Convert users of lockless_dereference() to READ_ONCE() 2017-12-17 13:57:15 +01:00
taskstats.c
test_kprobes.c
torture.c
tracepoint.c
tsacct.c
ucount.c
uid16.c kernel: make groups_sort calling a responsibility group_info allocators 2017-12-14 16:00:49 -08:00
umh.c kernel/umh.c: optimize 'proc_cap_handler()' 2017-11-17 16:10:01 -08:00
up.c
user_namespace.c
user-return-notifier.c
user.c
utsname_sysctl.c
utsname.c
watchdog_hld.c
watchdog.c
workqueue_internal.h
workqueue.c workqueue: remove unneeded kallsyms include 2017-12-11 07:15:43 -08:00