Alexander Shishkin a4faf00d99 perf/aux: Allow using AUX data in perf samples ... AUX data can be used to annotate perf events such as performance counters or tracepoints/breakpoints by including it in sample records when PERF_SAMPLE_AUX flag is set. Such samples would be instrumental in debugging and profiling by providing, for example, a history of instruction flow leading up to the event's overflow. The implementation makes use of grouping an AUX event with all the events that wish to take samples of the AUX data, such that the former is the group leader. The samplees should also specify the desired size of the AUX sample via attr.aux_sample_size. AUX capable PMUs need to explicitly add support for sampling, because it relies on a new callback to take a snapshot of the buffer without touching the event states. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vince Weaver <vincent.weaver@maine.edu> Cc: adrian.hunter@intel.com Cc: mathieu.poirier@linaro.org Link: https://lkml.kernel.org/r/20191025140835.53665-2-alexander.shishkin@linux.intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org>		2019-11-13 11:06:14 +01:00
..
bpf	bpf: Change size to u64 for bpf_map_{area_alloc, charge_init}()	2019-10-31 21:41:33 +01:00
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/aux: Allow using AUX data in perf samples	2019-11-13 11:06:14 +01:00
gcov	um: Enable CONFIG_CONSTRUCTORS	2019-09-15 21:37:13 +02:00
irq	irq/irqdomain: Update __irq_domain_alloc_fwnode() function documentation	2019-11-05 00:48:26 +01:00
livepatch	livepatch: Nullify obj->mod in klp_module_coming()'s error path	2019-08-19 13:03:37 +02:00
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: Fix pick_next_task() vs 'change' pattern race	2019-11-08 22:34:14 +01:00
time	timekeeping/vsyscall: Update VDSO data unconditionally	2019-11-04 23:02:53 +01:00
trace	Merge branch 'perf/urgent' into perf/core, to pick up fixes	2019-10-28 12:38:26 +01:00
.gitignore	Provide in-kernel headers to make extending kernel easier	2019-04-29 16:48:03 +02:00
acct.c	acct_on(): don't mess with freeze protection	2019-04-04 21:04:13 -04:00
async.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441	2019-06-05 17:37:17 +02:00
audit_fsnotify.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157	2019-05-30 11:26:37 -07:00
audit_tree.c	fsnotify: switch send_to_group() and ->handle_event to const struct qstr *	2019-04-26 13:51:03 -04:00
audit_watch.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156	2019-05-30 11:26:35 -07:00
audit.c	audit/stable-5.3 PR 20190702	2019-07-08 18:55:42 -07:00
audit.h	audit/stable-5.3 PR 20190702	2019-07-08 18:55:42 -07:00
auditfilter.c	audit/stable-5.3 PR 20190702	2019-07-08 18:55:42 -07:00
auditsc.c	audit: enforce op for string fields	2019-05-28 17:46:43 -04:00
backtracetest.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441	2019-06-05 17:37:17 +02:00
bounds.c
capability.c	LSM: add SafeSetID module that gates setid calls	2019-01-25 11:22:43 -08:00
compat.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
configs.c	kernel/configs: Replace GPL boilerplate code with SPDX identifier	2019-07-30 18:34:15 +02:00
context_tracking.c	treewide: Add SPDX license identifier for missed files	2019-05-21 10:50:45 +02:00
cpu_pm.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282	2019-06-05 17:36:37 +02:00
cpu.c	cpu/SMT: create and export cpu_smt_possible()	2019-09-24 13:37:28 +02:00
crash_core.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 230	2019-06-19 17:09:06 +02:00
crash_dump.c	treewide: Add SPDX license identifier for missed files	2019-05-21 10:50:45 +02:00
cred.c	Merge branch 'access-creds'	2019-07-25 08:36:29 -07:00
delayacct.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 25	2019-05-21 11:52:39 +02:00
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	fail_function: no need to check return value of debugfs_create functions	2019-06-03 15:49:06 +02:00
fork.c	clone3: validate stack arguments	2019-11-05 15:50:14 +01:00
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	treewide: Add SPDX license identifier for missed files	2019-05-21 10:50:45 +02:00
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	treewide: Add SPDX license identifier for missed files	2019-05-21 10:50:45 +02:00
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	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
Kconfig.hz	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
Kconfig.locks	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
Kconfig.preempt	sched/rt, Kconfig: Unbreak def/oldconfig with CONFIG_PREEMPT=y	2019-07-22 18:05:11 +02:00
kcov.c	kcov: convert kcov.refcount to refcount_t	2019-03-07 18:32:02 -08:00
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
kexec.c	kexec_load: Disable at runtime if the kernel is locked down	2019-08-19 21:54:15 -07:00
kheaders.c	kheaders: Move from proc to sysfs	2019-05-24 20:16:01 +02:00
kmod.c
kprobes.c	Tracing updates:	2019-09-20 11:19:48 -07:00
ksysfs.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 170	2019-05-30 11:26:39 -07:00
kthread.c	kthread: make __kthread_queue_delayed_work static	2019-10-16 09:20:58 -07:00
latencytop.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441	2019-06-05 17:37:17 +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
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
module-internal.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 36	2019-05-24 17:27:11 +02:00
module.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
notifier.c	treewide: Add SPDX license identifier for missed files	2019-05-21 10:50:45 +02:00
nsproxy.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441	2019-06-05 17:37:17 +02:00
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_namespace.c	proc/sysctl: add shared variables for range check	2019-07-18 17:08:07 -07:00
pid.c	kernel/pid.c: convert struct pid count to refcount_t	2019-07-16 19:23:24 -07:00
profile.c	treewide: Add SPDX license identifier for missed files	2019-05-21 10:50:45 +02:00
ptrace.c	ptrace: add PTRACE_GET_SYSCALL_INFO request	2019-07-16 19:23:24 -07:00
range.c
reboot.c	treewide: Add SPDX license identifier for missed files	2019-05-21 10:50:45 +02:00
relay.c	Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2019-03-12 13:27:20 -07:00
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	signal: Remove task parameter from force_sig	2019-05-27 09:36:28 -05:00
seccomp.c	signal: Remove the signal number and task parameters from force_sig_info	2019-05-29 09:31:44 -05:00
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	treewide: Add SPDX license identifier for missed files	2019-05-21 10:50:45 +02:00
smpboot.h
softirq.c	Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2019-07-08 11:01:13 -07:00
stackleak.c	stackleak: Mark stackleak_track_stack() as notrace	2018-12-05 19:31:44 -08:00
stacktrace.c	stacktrace: Don't skip first entry on noncurrent tasks	2019-11-04 21:19:25 +01:00
stop_machine.c	stop_machine: Avoid potential race behaviour	2019-10-17 12:47:12 +02:00
sys_ni.c	arch: handle arches who do not yet define clone3	2019-06-21 01:54:53 +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
sysctl_binary.c	kernel/sysctl: add panic_print into sysctl	2019-01-04 13:13:47 -08:00
sysctl.c	parisc: sysctl.c: Use CONFIG_PARISC instead of __hppa_ define	2019-10-14 21:43:54 +02:00
task_work.c
taskstats.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157	2019-05-30 11:26:37 -07:00
test_kprobes.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 25	2019-05-21 11:52:39 +02:00
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	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157	2019-05-30 11:26:37 -07:00
ucount.c	proc/sysctl: add shared variables for range check	2019-07-18 17:08:07 -07:00
uid16.c
uid16.h
umh.c	treewide: Add SPDX license identifier for missed files	2019-05-21 10:50:45 +02:00
up.c	smp: Remove smp_call_function() and on_each_cpu() return values	2019-06-23 14:26:26 +02:00
user_namespace.c	Keyrings namespacing	2019-07-08 19:36:47 -07:00
user-return-notifier.c	treewide: Add SPDX license identifier for missed files	2019-05-21 10:50:45 +02:00
user.c	Keyrings namespacing	2019-07-08 19:36:47 -07:00
utsname_sysctl.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441	2019-06-05 17:37:17 +02:00
utsname.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441	2019-06-05 17:37:17 +02:00
watchdog_hld.c	kernel/watchdog_hld.c: hard lockup message should end with a newline	2019-04-19 09:46:05 -07:00
watchdog.c	watchdog: Mark watchdog_hrtimer to expire in hard interrupt context	2019-08-01 20:51:20 +02:00
workqueue_internal.h	sched/core, workqueues: Distangle worker accounting from rq lock	2019-04-16 16:55:15 +02:00
workqueue.c	workqueue: require CPU hotplug read exclusion for apply_workqueue_attrs	2019-09-13 21:15:40 +10:00