Beau Belgrave 2fc3d0ac09 tracing/user_events: Allow events to persist for perfmon_capable users ... [ Upstream commit 5dbd04eddb ] There are several scenarios that have come up where having a user_event persist even if the process that registered it exits. The main one is having a daemon create events on bootup that shouldn't get deleted if the daemon has to exit or reload. Another is within OpenTelemetry exporters, they wish to potentially check if a user_event exists on the system to determine if exporting the data out should occur. The user_event in this case must exist even in the absence of the owning process running (such as the above daemon case). Expose the previously internal flag USER_EVENT_REG_PERSIST to user processes. Upon register or delete of events with this flag, ensure the user is perfmon_capable to prevent random user processes with access to tracefs from creating events that persist after exit. Link: https://lkml.kernel.org/r/20230912180704.1284-2-beaub@linux.microsoft.com Signed-off-by: Beau Belgrave <beaub@linux.microsoft.com> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> Stable-dep-of: bd125a0840 ("tracing/user_events: Fix non-spaced field matching") Signed-off-by: Sasha Levin <sashal@kernel.org>		2024-06-12 11:12:11 +02:00
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acpi	ACPI: x86: Move acpi_quirk_skip_serdev_enumeration() out of CONFIG_X86_ANDROID_TABLETS	2024-04-13 13:07:31 +02:00
asm-generic	sched: Add missing memory barrier in switch_mm_cid	2024-04-27 17:11:41 +02:00
clocksource
crypto
drm	drm/edid: Parse topology block for all DispID structure v1.x	2024-06-12 11:12:05 +02:00
dt-bindings	clk: renesas: r8a779g0: Correct PFC/GPIO parent clocks	2024-03-26 18:19:47 -04:00
keys
kunit
kvm	KVM: arm64: Fix host-programmed guest events in nVHE	2024-04-10 16:35:48 +02:00
linux	dev_printk: Add and use dev_no_printk()	2024-06-12 11:11:57 +02:00
math-emu
media	media: mc: Add num_links flag to media_pad	2024-04-03 15:28:17 +02:00
memory
misc
net	Bluetooth: HCI: Remove HCI_AMP support	2024-06-12 11:11:55 +02:00
pcmcia
ras
rdma
rv
scsi	scsi: sd: Fix TCG OPAL unlock on system resume	2024-04-03 15:28:59 +02:00
soc	soc: qcom: socinfo: rename PM2250 to PM4125	2024-03-26 18:19:23 -04:00
sound	ASoC: Intel: common: add ACPI matching tables for Arrow Lake	2024-06-12 11:11:59 +02:00
target
trace	ASoC: tracing: Export SND_SOC_DAPM_DIR_OUT to its value	2024-06-12 11:12:03 +02:00
uapi	tracing/user_events: Allow events to persist for perfmon_capable users	2024-06-12 11:12:11 +02:00
ufs
vdso
video
xen	xen/events: reduce externally visible helper functions	2024-03-01 13:34:57 +01:00