Alexei Starovoitov a6ed3ea65d bpf: restore behavior of bpf_map_update_elem ... The introduction of pre-allocated hash elements inadvertently broke the behavior of bpf hash maps where users expected to call bpf_map_update_elem() without considering that the map can be full. Some programs do: old_value = bpf_map_lookup_elem(map, key); if (old_value) { ... prepare new_value on stack ... bpf_map_update_elem(map, key, new_value); } Before pre-alloc the update() for existing element would work even in 'map full' condition. Restore this behavior. The above program could have updated old_value in place instead of update() which would be faster and most programs use that approach, but sometimes the values are large and the programs use update() helper to do atomic replacement of the element. Note we cannot simply update element's value in-place like percpu hash map does and have to allocate extra num_possible_cpu elements and use this extra reserve when the map is full. Fixes: 6c90598174 ("bpf: pre-allocate hash map elements") Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>		2016-08-06 20:49:19 -04:00
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bpf	bpf: restore behavior of bpf_map_update_elem	2016-08-06 20:49:19 -04:00
configs	config: add android config fragments	2016-08-02 19:35:42 -04:00
debug
events
gcov
irq
livepatch
locking
power
printk	printk: add kernel parameter to control writes to /dev/kmsg	2016-08-02 19:35:06 -04:00
rcu
sched
time
trace	A few updates and fixes:	2016-08-03 12:50:06 -04:00
.gitignore
acct.c
async.c
audit.c
audit.h
audit_fsnotify.c
audit_tree.c
audit_watch.c
auditfilter.c
auditsc.c
backtracetest.c
bounds.c
capability.c
cgroup.c
cgroup_freezer.c
cgroup_pids.c
compat.c
configs.c
context_tracking.c
cpu.c
cpu_pm.c
cpuset.c
crash_dump.c
cred.c
delayacct.c
dma.c
elfcore.c
exec_domain.c
exit.c	kernel/exit.c: quieten greatest stack depth printk	2016-08-02 19:35:23 -04:00
extable.c
fork.c
freezer.c
futex.c
futex_compat.c
groups.c
hung_task.c
irq_work.c
jump_label.c
kallsyms.c
kcmp.c
Kconfig.freezer
Kconfig.hz
Kconfig.locks
Kconfig.preempt
kcov.c
kexec.c	kexec: allow architectures to override boot mapping	2016-08-02 19:35:27 -04:00
kexec_core.c	kexec: add restriction on kexec_load() segment sizes	2016-08-02 19:35:31 -04:00
kexec_file.c
kexec_internal.h
kmod.c
kprobes.c
ksysfs.c	kexec: add a kexec_crash_loaded() function	2016-08-02 19:35:30 -04:00
kthread.c
latencytop.c
Makefile
membarrier.c
memremap.c
module-internal.h
module.c	dynamic_debug: only add header when used	2016-08-02 19:35:03 -04:00
module_signing.c
notifier.c
nsproxy.c
padata.c
panic.c	kexec: use core_param for crash_kexec_post_notifiers boot option	2016-08-02 19:35:29 -04:00
params.c
pid.c
pid_namespace.c
profile.c
ptrace.c
range.c
reboot.c
relay.c	relay: add global mode support for buffer-only channels	2016-08-02 19:35:41 -04:00
resource.c
seccomp.c
signal.c
smp.c
smpboot.c
smpboot.h
softirq.c
stacktrace.c
stop_machine.c
sys.c
sys_ni.c
sysctl.c	printk: add kernel parameter to control writes to /dev/kmsg	2016-08-02 19:35:06 -04:00
sysctl_binary.c
task_work.c	task_work: use READ_ONCE/lockless_dereference, avoid pi_lock if !task_works	2016-08-02 19:35:02 -04:00
taskstats.c
test_kprobes.c
torture.c
tracepoint.c
tsacct.c
uid16.c
up.c
user-return-notifier.c
user.c
user_namespace.c
utsname.c
utsname_sysctl.c
watchdog.c
workqueue.c
workqueue_internal.h