Hassan Naveed 0e24220821 tracing: Use xarray for syscall trace events ... Currently, a lot of memory is wasted for architectures like MIPS when init_ftrace_syscalls() allocates the array for syscalls using kcalloc. This is because syscalls numbers start from 4000, 5000 or 6000 and array elements up to that point are unused. Fix this by using a data structure more suited to storing sparsely populated arrays. The XARRAY data structure, implemented using radix trees, is much more memory efficient for storing the syscalls in question. Link: http://lkml.kernel.org/r/20191115234314.21599-1-hnaveed@wavecomp.com Signed-off-by: Hassan Naveed <hnaveed@wavecomp.com> Reviewed-by: Paul Burton <paulburton@kernel.org> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>		2019-11-22 19:47:41 -05:00
..
bpf	bpf: Fix use after free in bpf_get_prog_name	2019-10-22 21:59:49 -07:00
cgroup	sched/topology: Don't try to build empty sched domains	2019-10-29 09:58:45 +01:00
configs	…
debug	kgdb: don't use a notifier to enter kgdb at panic; call directly	2019-09-25 17:51:40 -07:00
dma	dma-mapping: fix false positivse warnings in dma_common_free_remap()	2019-10-05 10:24:17 +02:00
events	perf/core: Start rejecting the syscall with attr.__reserved_2 set	2019-10-28 11:01:59 +01:00
gcov	um: Enable CONFIG_CONSTRUCTORS	2019-09-15 21:37:13 +02:00
irq	Power management updates for 5.4-rc1	2019-09-17 19:15:14 -07:00
livepatch	ftrace: Introduce PERMANENT ftrace_ops flag	2019-11-04 09:33:15 -05:00
locking	Revert "locking/pvqspinlock: Don't wait if vCPU is preempted"	2019-09-25 10:22:37 +02:00
power	PM: QoS: Introduce frequency QoS	2019-10-21 02:05:21 +02:00
printk	Merge branch 'for-5.4' into for-linus	2019-09-16 12:54:25 +02:00
rcu	Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2019-09-16 17:25:49 -07:00
sched	sched/topology: Allow sched_asym_cpucapacity to be disabled	2019-10-29 09:58:46 +01:00
time	posix-cpu-timers: Fix two trivial comments	2019-10-23 14:48:24 +02:00
trace	tracing: Use xarray for syscall trace events	2019-11-22 19:47:41 -05:00
.gitignore	…
Kconfig.freezer	…
Kconfig.hz	…
Kconfig.locks	…
Kconfig.preempt	sched/rt, Kconfig: Unbreak def/oldconfig with CONFIG_PREEMPT=y	2019-07-22 18:05:11 +02:00
Makefile	Merge branch 'next-integrity' of git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity	2019-09-27 19:37:27 -07:00
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	…
compat.c	…
configs.c	kernel/configs: Replace GPL boilerplate code with SPDX identifier	2019-07-30 18:34:15 +02:00
context_tracking.c	…
cpu.c	cpu/SMT: create and export cpu_smt_possible()	2019-09-24 13:37:28 +02:00
cpu_pm.c	…
crash_core.c	…
crash_dump.c	…
cred.c	Merge branch 'access-creds'	2019-07-25 08:36:29 -07:00
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	tasks, sched/core: With a grace period after finish_task_switch(), remove unnecessary code	2019-09-25 17:42:29 +02:00
extable.c	extable: Add function to search only kernel exception table	2019-08-21 22:23:48 +10:00
fail_function.c	…
fork.c	kernel/sysctl.c: do not override max_threads provided by userspace	2019-10-07 15:47:19 -07:00
freezer.c	Revert "libata, freezer: avoid block device removal while system is frozen"	2019-10-06 09:11:37 -06:00
futex.c	hrtimer/treewide: Use hrtimer_sleeper_start_expires()	2019-08-01 17:43:16 +02:00
gen_kheaders.sh	kheaders: substituting --sort in archive creation	2019-10-17 09:08:19 +09:00
groups.c	…
hung_task.c	…
iomem.c	mm/nvdimm: add is_ioremap_addr and use that to check ioremap address	2019-07-12 11:05:40 -07:00
irq_work.c	…
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	…
kcov.c	…
kexec.c	kexec_load: Disable at runtime if the kernel is locked down	2019-08-19 21:54:15 -07:00
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	Merge branch 'next-lockdown' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security	2019-09-28 08:14:15 -07:00
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	…
module-internal.h	…
module.c	tracing: Verify if trace array exists before destroying it.	2019-11-13 09:37:29 -05:00
module_signature.c	MODSIGN: Export module signature definitions	2019-08-05 18:39:56 -04:00
module_signing.c	MODSIGN: Export module signature definitions	2019-08-05 18:39:56 -04:00
notifier.c	…
nsproxy.c	…
padata.c	padata: remove cpu_index from the parallel_queue	2019-09-13 21:15:41 +10:00
panic.c	panic: ensure preemption is disabled during panic()	2019-10-07 15:47:19 -07:00
params.c	lockdown: Lock down module params that specify hardware parameters (eg. ioport)	2019-08-19 21:54:16 -07:00
pid.c	kernel/pid.c: convert struct pid count to refcount_t	2019-07-16 19:23:24 -07:00
pid_namespace.c	proc/sysctl: add shared variables for range check	2019-07-18 17:08:07 -07:00
profile.c	…
ptrace.c	ptrace: add PTRACE_GET_SYSCALL_INFO request	2019-07-16 19:23:24 -07:00
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	…
signal.c	core-process-v5.4	2019-09-16 09:28:19 -07:00
smp.c	smp: Warn on function calls from softirq context	2019-07-20 11:27:16 +02:00
smpboot.c	…
smpboot.h	…
softirq.c	…
stackleak.c	…
stacktrace.c	stacktrace: Constify 'entries' arguments	2019-07-25 15:43:26 +02:00
stop_machine.c	stop_machine: Avoid potential race behaviour	2019-10-17 12:47:12 +02:00
sys.c	Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2019-09-17 12:35:15 -07:00
sys_ni.c	…
sysctl.c	parisc: sysctl.c: Use CONFIG_PARISC instead of __hppa_ define	2019-10-14 21:43:54 +02:00
sysctl_binary.c	…
task_work.c	…
taskstats.c	…
test_kprobes.c	…
torture.c	torture: Remove exporting of internal functions	2019-08-01 14:30:22 -07:00
tracepoint.c	The main changes in this release include:	2019-07-18 11:51:00 -07:00
tsacct.c	…
ucount.c	proc/sysctl: add shared variables for range check	2019-07-18 17:08:07 -07:00
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: Mark watchdog_hrtimer to expire in hard interrupt context	2019-08-01 20:51:20 +02:00
watchdog_hld.c	…
workqueue.c	workqueue: require CPU hotplug read exclusion for apply_workqueue_attrs	2019-09-13 21:15:40 +10:00
workqueue_internal.h	…