Björn Töpel 75ccbef636 bpf: Introduce BPF dispatcher ... The BPF dispatcher is a multi-way branch code generator, mainly targeted for XDP programs. When an XDP program is executed via the bpf_prog_run_xdp(), it is invoked via an indirect call. The indirect call has a substantial performance impact, when retpolines are enabled. The dispatcher transform indirect calls to direct calls, and therefore avoids the retpoline. The dispatcher is generated using the BPF JIT, and relies on text poking provided by bpf_arch_text_poke(). The dispatcher hijacks a trampoline function it via the __fentry__ nop of the trampoline. One dispatcher instance currently supports up to 64 dispatch points. A user creates a dispatcher with its corresponding trampoline with the DEFINE_BPF_DISPATCHER macro. Signed-off-by: Björn Töpel <bjorn.topel@intel.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20191213175112.30208-3-bjorn.topel@gmail.com		2019-12-13 13:09:32 -08:00
..
bpf	bpf: Introduce BPF dispatcher	2019-12-13 13:09:32 -08:00
cgroup	Merge branch 'for-5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup	2019-11-25 19:23:46 -08:00
configs
debug	kdb: Tweak escape handling for vi users	2019-10-28 12:08:29 +00:00
dma	lib/genalloc.c: rename addr_in_gen_pool to gen_pool_has_addr	2019-12-04 19:44:13 -08:00
events	mm/mmap.c: use IS_ERR_VALUE to check return value of get_unmapped_area	2019-12-01 06:29:19 -08:00
gcov	um: Enable CONFIG_CONSTRUCTORS	2019-09-15 21:37:13 +02:00
irq	irqchip updates for Linux 5.5	2019-11-20 14:16:34 +01:00
livepatch	New tracing features:	2019-11-27 11:42:01 -08:00
locking	Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2019-11-26 16:02:40 -08:00
power	Additional power management updates for 5.5-rc1	2019-12-04 10:48:09 -08:00
printk	Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2019-12-03 09:29:50 -08:00
rcu	Merge branches 'doc.2019.10.29a', 'fixes.2019.10.30a', 'nohz.2019.10.28a', 'replace.2019.10.30a', 'torture.2019.10.05a' and 'lkmm.2019.10.05a' into HEAD	2019-10-30 08:47:13 -07:00
sched	Merge branch 'thermal/next' of git://git.kernel.org/pub/scm/linux/kernel/git/thermal/linux	2019-12-05 11:21:24 -08:00
time	Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2019-12-03 12:20:25 -08:00
trace	Two fixes and one patch that was missed:	2019-12-04 19:13:52 -08:00
.gitignore
acct.c
async.c
audit.c	audit: remove redundant condition check in kauditd_thread()	2019-10-25 11:48:14 -04:00
audit.h
audit_fsnotify.c
audit_tree.c
audit_watch.c	audit_get_nd(): don't unlock parent too early	2019-11-10 11:56:55 -05:00
auditfilter.c
auditsc.c	Revert "bpf: Emit audit messages upon successful prog load and unload"	2019-11-23 09:56:02 -08:00
backtracetest.c
bounds.c
capability.c
compat.c	y2038: itimer: compat handling to itimer.c	2019-11-15 14:38:30 +01:00
configs.c
context_tracking.c	context_tracking: Rename context_tracking_is_enabled() => context_tracking_enabled()	2019-10-29 10:01:12 +01:00
cpu.c	Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2019-11-26 16:02:40 -08:00
cpu_pm.c
crash_core.c
crash_dump.c
cred.c
delayacct.c
dma.c
elfcore.c	kernel/elfcore.c: include proper prototypes	2019-09-25 17:51:39 -07:00
exec_domain.c
exit.c	Pipework for general notification queue	2019-11-30 14:12:13 -08:00
extable.c	bpf: Add support for BTF pointers to x86 JIT	2019-10-17 16:44:36 +02:00
fail_function.c
fork.c	Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2019-12-03 12:20:25 -08:00
freezer.c	Revert "libata, freezer: avoid block device removal while system is frozen"	2019-10-06 09:11:37 -06:00
futex.c	futex: Prevent exit livelock	2019-11-20 09:40:38 +01:00
gen_kheaders.sh	kheaders: explain why include/config/autoconf.h is excluded from md5sum	2019-11-11 20:10:01 +09:00
groups.c
hung_task.c
iomem.c
irq_work.c	irq_work: Fix IRQ_WORK_BUSY bit clearing	2019-11-15 10:48:37 +01:00
jump_label.c	jump_label: Don't warn on __exit jump entries	2019-08-29 15:10:10 +01:00
kallsyms.c	kallsyms: Don't let kallsyms_lookup_size_offset() fail on retrieving the first symbol	2019-08-27 16:19:56 +01:00
kcmp.c
Kconfig.freezer
Kconfig.hz
Kconfig.locks
Kconfig.preempt	sched/Kconfig: Fix spelling mistake in user-visible help text	2019-11-12 11:35:32 +01:00
kcov.c	kcov: remote coverage support	2019-12-04 19:44:14 -08:00
kexec.c
kexec_core.c	kexec: bail out upon SIGKILL when allocating memory.	2019-09-25 17:51:40 -07:00
kexec_elf.c	kexec_elf: support 32 bit ELF files	2019-09-06 23:58:44 +02:00
kexec_file.c	kexec: Fix pointer-to-int-cast warnings	2019-11-01 21:42:58 +01:00
kexec_internal.h
kheaders.c
kmod.c
kprobes.c	Tracing updates:	2019-09-20 11:19:48 -07:00
ksysfs.c
kthread.c	kthread: make __kthread_queue_delayed_work static	2019-10-16 09:20:58 -07:00
latencytop.c
Makefile	Kbuild updates for v5.5	2019-12-02 17:35:04 -08:00
module-internal.h
module.c	Modules updates for v5.5	2019-12-05 12:27:16 -08:00
module_signature.c
module_signing.c
notifier.c	kernel/notifier.c: remove blocking_notifier_chain_cond_register()	2019-12-04 19:44:12 -08:00
nsproxy.c
padata.c	padata: remove cpu_index from the parallel_queue	2019-09-13 21:15:41 +10:00
panic.c	locking/refcount: Remove unused 'refcount_error_report()' function	2019-11-25 09:15:42 +01:00
params.c
pid.c	fork: extend clone3() to support setting a PID	2019-11-15 23:49:22 +01:00
pid_namespace.c	fork: extend clone3() to support setting a PID	2019-11-15 23:49:22 +01:00
profile.c	kernel/profile.c: use cpumask_available to check for NULL cpumask	2019-12-04 19:44:12 -08:00
ptrace.c
range.c
reboot.c
relay.c
resource.c	mm/memory_hotplug.c: use PFN_UP / PFN_DOWN in walk_system_ram_range()	2019-09-24 15:54:09 -07:00
rseq.c
seccomp.c	seccomp: add SECCOMP_USER_NOTIF_FLAG_CONTINUE	2019-10-10 14:45:51 -07:00
signal.c	cgroup: freezer: call cgroup_enter_frozen() with preemption disabled in ptrace_stop()	2019-10-11 08:39:57 -07:00
smp.c
smpboot.c
smpboot.h
softirq.c
stackleak.c
stacktrace.c	stacktrace: Get rid of unneeded '!!' pattern	2019-11-11 10:30:59 +01:00
stop_machine.c	Merge branch 'for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu	2019-10-31 09:33:19 +01:00
sys.c	kernel/sys.c: avoid copying possible padding bytes in copy_to_user	2019-12-04 19:44:12 -08:00
sys_ni.c	y2038: allow disabling time32 system calls	2019-11-15 14:38:30 +01:00
sysctl-test.c	kernel/sysctl-test: Add null pointer test for sysctl.c:proc_dointvec()	2019-09-30 17:35:01 -06:00
sysctl.c	kernel: sysctl: make drop_caches write-only	2019-12-01 12:59:07 -08:00
sysctl_binary.c	sysctl: Remove the sysctl system call	2019-11-26 13:03:56 -06:00
task_work.c
taskstats.c
test_kprobes.c
torture.c
tracepoint.c
tsacct.c
ucount.c
uid16.c
uid16.h
umh.c
up.c
user-return-notifier.c
user.c
user_namespace.c
utsname.c
utsname_sysctl.c
watchdog.c
watchdog_hld.c
workqueue.c	Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2019-11-26 15:42:43 -08:00
workqueue_internal.h