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c96fff391c095c11dc87dab35be72dee7d217cde
linux/kernel
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Tao Chen c96fff391c perf/ring_buffer: Allow the EPOLLRDNORM flag for poll 
The poll man page says POLLRDNORM is equivalent to POLLIN. For poll(),
it seems that if user sets pollfd with POLLRDNORM in userspace, perf_poll
will not return until timeout even if perf_output_wakeup called,
whereas POLLIN returns.

Fixes: 76369139ce ("perf: Split up buffer handling from core code")
Signed-off-by: Tao Chen <chen.dylane@linux.dev>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: https://lore.kernel.org/r/20250314030036.2543180-1-chen.dylane@linux.dev
2025-03-17 08:31:04 +01:00
..
bpf
Merge tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf
2025-02-20 15:37:17 -08:00
cgroup
Merge tag 'drm-misc-fixes-2025-02-20' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-fixes
2025-02-21 09:16:35 +10:00
configs
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debug
kdb: Remove unused flags stack
2025-01-25 08:22:26 +00:00
dma
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entry
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events
perf/ring_buffer: Allow the EPOLLRDNORM flag for poll
2025-03-17 08:31:04 +01:00
futex
Merge tag 'locking-urgent-2025-02-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2025-02-08 10:54:11 -08:00
gcov
gcov: clang: use correct function param names
2025-01-24 22:47:27 -08:00
irq
genirq: Remove unused CONFIG_GENERIC_PENDING_IRQ_CHIPFLAGS
2025-02-13 13:18:54 +01:00
kcsan
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livepatch
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locking
treewide: const qualify ctl_tables where applicable
2025-01-28 13:48:37 +01:00
module
Merge tag 'kbuild-v6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
2025-01-31 12:07:07 -08:00
power
Merge tag 'pm-6.14-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
2025-01-30 15:10:34 -08:00
printk
treewide: const qualify ctl_tables where applicable
2025-01-28 13:48:37 +01:00
rcu
Merge tag 'mm-stable-2025-01-26-14-59' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
2025-01-26 18:36:23 -08:00
sched
Merge tag 'sched-urgent-2025-02-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2025-02-28 17:00:16 -08:00
time
Merge tag 'timers-urgent-2025-02-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2025-02-08 11:55:03 -08:00
trace
ftrace: Avoid potential division by zero in function_stat_show()
2025-02-27 21:02:10 -05:00
.gitignore
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acct.c
acct: block access to kernel internal filesystems
2025-02-12 12:24:16 +01:00
async.c
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audit_fsnotify.c
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audit_tree.c
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audit_watch.c
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audit.c
audit: Initialize lsmctx to avoid memory allocation error
2025-01-29 20:02:04 -05:00
audit.h
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auditfilter.c
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auditsc.c
Merge tag 'lsm-pr-20250121' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/lsm
2025-01-21 20:03:04 -08:00
backtracetest.c
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bounds.c
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capability.c
kernel: remove get_task_comm() and print task comm directly
2025-01-12 20:21:15 -08:00
cfi.c
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compat.c
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configs.c
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context_tracking.c
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cpu_pm.c
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cpu.c
watchdog/hardlockup/perf: Fix perf_event memory leak
2025-03-06 12:05:33 +01:00
crash_core.c
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crash_reserve.c
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cred.c
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delayacct.c
treewide: const qualify ctl_tables where applicable
2025-01-28 13:48:37 +01:00
dma.c
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elfcorehdr.c
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exec_domain.c
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exit.c
treewide: const qualify ctl_tables where applicable
2025-01-28 13:48:37 +01:00
exit.h
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extable.c
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fail_function.c
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fork.c
kernel: be more careful about dup_mmap() failures and uprobe registering
2025-02-01 03:53:25 -08:00
freezer.c
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gen_kheaders.sh
Merge tag 'kbuild-v6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
2025-01-31 12:07:07 -08:00
groups.c
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hung_task.c
treewide: const qualify ctl_tables where applicable
2025-01-28 13:48:37 +01:00
iomem.c
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irq_work.c
kasan: make kasan_record_aux_stack_noalloc() the default behaviour
2025-01-13 22:40:36 -08:00
jump_label.c
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kallsyms_internal.h
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kallsyms_selftest.c
kallsyms: Use kthread_run_on_cpu()
2025-01-02 22:12:12 +01:00
kallsyms_selftest.h
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kallsyms.c
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kcmp.c
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Kconfig.freezer
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Kconfig.hz
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Kconfig.kexec
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Kconfig.locks
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Kconfig.preempt
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kcov.c
kcov: mark in_softirq_really() as __always_inline
2024-12-30 17:59:08 -08:00
kexec_core.c
treewide: const qualify ctl_tables where applicable
2025-01-28 13:48:37 +01:00
kexec_elf.c
…
kexec_file.c
…
kexec_internal.h
…
kexec.c
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kheaders.c
kheaders: Simplify attribute through __BIN_ATTR_SIMPLE_RO()
2024-12-24 09:46:49 +01:00
kprobes.c
treewide: const qualify ctl_tables where applicable
2025-01-28 13:48:37 +01:00
ksyms_common.c
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ksysfs.c
kernel/ksysfs.c: simplify bin_attribute definition
2025-01-07 16:59:15 +01:00
kthread.c
kthread: Fix return value on kzalloc() failure in kthread_affine_preferred()
2025-02-04 01:42:27 +01:00
latencytop.c
treewide: const qualify ctl_tables where applicable
2025-01-28 13:48:37 +01:00
Makefile
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module_signature.c
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notifier.c
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nsproxy.c
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padata.c
padata: avoid UAF for reorder_work
2025-01-19 12:44:28 +08:00
panic.c
treewide: const qualify ctl_tables where applicable
2025-01-28 13:48:37 +01:00
params.c
module: Constify 'struct module_attribute'
2025-01-26 13:05:23 +01:00
pid_namespace.c
treewide: const qualify ctl_tables where applicable
2025-01-28 13:48:37 +01:00
pid_sysctl.h
treewide: const qualify ctl_tables where applicable
2025-01-28 13:48:37 +01:00
pid.c
treewide: const qualify ctl_tables where applicable
2025-01-28 13:48:37 +01:00
profile.c
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ptrace.c
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range.c
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reboot.c
treewide: const qualify ctl_tables where applicable
2025-01-28 13:48:37 +01:00
regset.c
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relay.c
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resource_kunit.c
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resource.c
kernel/resource: simplify API __devm_release_region() implementation
2025-01-12 20:20:58 -08:00
rseq.c
rseq: Fix rseq registration with CONFIG_DEBUG_RSEQ
2025-02-21 14:21:02 +01:00
scftorture.c
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scs.c
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seccomp.c
seccomp: passthrough uretprobe systemcall without filtering
2025-02-06 12:48:21 -08:00
signal.c
treewide: const qualify ctl_tables where applicable
2025-01-28 13:48:37 +01:00
smp.c
Merge tag 'csd-lock.2025.01.28a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu
2025-01-28 11:34:03 -08:00
smpboot.c
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smpboot.h
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softirq.c
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stackleak.c
treewide: const qualify ctl_tables where applicable
2025-01-28 13:48:37 +01:00
stacktrace.c
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static_call_inline.c
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static_call.c
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stop_machine.c
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sys_ni.c
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sys.c
tracing: Add task_prctl_unknown tracepoint
2024-12-22 20:28:11 -08:00
sysctl-test.c
treewide: const qualify ctl_tables where applicable
2025-01-28 13:48:37 +01:00
sysctl.c
perf/core: Move perf_event sysctls into kernel/events
2025-02-21 14:53:02 +01:00
task_work.c
kasan: make kasan_record_aux_stack_noalloc() the default behaviour
2025-01-13 22:40:36 -08:00
taskstats.c
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torture.c
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tracepoint.c
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tsacct.c
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ucount.c
ucounts: move kfree() out of critical zone protected by ucounts_lock
2025-01-12 20:21:00 -08:00
uid16.c
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uid16.h
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umh.c
treewide: const qualify ctl_tables where applicable
2025-01-28 13:48:37 +01:00
up.c
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user_namespace.c
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user-return-notifier.c
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user.c
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usermode_driver.c
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utsname_sysctl.c
treewide: const qualify ctl_tables where applicable
2025-01-28 13:48:37 +01:00
utsname.c
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vhost_task.c
vhost: return task creation error instead of NULL
2025-03-01 02:52:52 -05:00
vmcore_info.c
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watch_queue.c
watch_queue: Use page->private instead of page->index
2024-12-22 11:29:51 +01:00
watchdog_buddy.c
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watchdog_perf.c
watchdog/hardlockup/perf: Warn if watchdog_ev is leaked
2025-03-06 12:07:39 +01:00
watchdog.c
watchdog/hardlockup/perf: Fix perf_event memory leak
2025-03-06 12:05:33 +01:00
workqueue_internal.h
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workqueue.c
Merge tag 'wq-for-6.14-rc4-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq
2025-02-26 14:22:47 -08:00