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3606c0e1a1
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German Gomez 3606c0e1a1 perf evsel: Override attr->sample_period for non-libpfm4 events 
A previous patch preventing "attr->sample_period" values from being
overridden in pfm events changed a related behaviour in arm-spe.

Before said patch:

  perf record -c 10000 -e arm_spe_0// -- sleep 1

Would yield an SPE event with period=10000. After the patch, the period
in "-c 10000" was being ignored because the arm-spe code initializes
sample_period to a non-zero value.

This patch restores the previous behaviour for non-libpfm4 events.

Fixes: ae5dcc8abe (“perf record: Prevent override of attr->sample_period for libpfm4 events”)
Reported-by: Chase Conklin <chase.conklin@arm.com>
Signed-off-by: German Gomez <german.gomez@arm.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: John Fastabend <john.fastabend@gmail.com>
Cc: KP Singh <kpsingh@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Martin KaFai Lau <kafai@fb.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Song Liu <songliubraving@fb.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Yonghong Song <yhs@fb.com>
Cc: bpf@vger.kernel.org
Cc: netdev@vger.kernel.org
Link: http://lore.kernel.org/lkml/20220118144054.2541-1-german.gomez@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-01-22 17:15:47 -03:00
..
accounting
arch tools headers UAPI: Sync x86 arch prctl headers with the kernel sources 2022-01-19 14:41:29 -03:00
bootconfig
bpf libbpf 1.0: Deprecate bpf_map__is_offload_neutral() 2022-01-05 16:09:06 -08:00
build Merge remote-tracking branch 'torvalds/master' into perf/core 2022-01-13 10:20:59 -03:00
cgroup
counter
debugging
edid
firewire
firmware
gpio
hv
iio
include tools headers UAPI: Sync files changed by new set_mempolicy_home_node syscall 2022-01-20 11:20:37 -03:00
io_uring
kvm/kvm_stat
laptop
leds
lib perf cpumap: Migrate to libperf cpumap api 2022-01-22 17:08:42 -03:00
memory-model
objtool Merge branch 'signal-for-v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2022-01-17 05:49:30 +02:00
pci
pcmcia
perf perf evsel: Override attr->sample_period for non-libpfm4 events 2022-01-22 17:15:47 -03:00
power More ACPI updates for 5.17-rc1 2022-01-18 08:51:51 +02:00
rcu
scripts tools: Help cross-building with clang 2021-12-16 12:15:04 -08:00
spi
testing RISCV: 2022-01-16 16:15:14 +02:00
thermal/tmon
time
tracing rtla: Add Documentation 2022-01-13 17:02:43 -05:00
usb
virtio
vm
wmi
Makefile