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0def8af038
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Yang Jihong 0def8af038 perf debug: Set debug_peo_args and redirect_to_stderr variable to correct values in perf_quiet_option() 
[ Upstream commit 188ac720d3 ]

When perf uses quiet mode, perf_quiet_option() sets the 'debug_peo_args'
variable to -1, and display_attr() incorrectly determines the value of
'debug_peo_args'.  As a result, unexpected information is displayed.

Before:

  # perf record --quiet -- ls > /dev/null
  ------------------------------------------------------------
  perf_event_attr:
    size                             128
    { sample_period, sample_freq }   4000
    sample_type                      IP|TID|TIME|PERIOD
    read_format                      ID|LOST
    disabled                         1
    inherit                          1
    mmap                             1
    comm                             1
    freq                             1
    enable_on_exec                   1
    task                             1
    precise_ip                       3
    sample_id_all                    1
    exclude_guest                    1
    mmap2                            1
    comm_exec                        1
    ksymbol                          1
    bpf_event                        1
  ------------------------------------------------------------
  ...

After:
  # perf record --quiet -- ls > /dev/null
  #

redirect_to_stderr is a similar problem.

Fixes: f78eaef0e0 ("perf tools: Allow to force redirect pr_debug to stderr.")
Fixes: ccd26741f5 ("perf tool: Provide an option to print perf_event_open args and return value")
Suggested-by: Adrian Hunter <adrian.hunter@intel.com>
Reviewed-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Yang Jihong <yangjihong1@huawei.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Carsten Haitzler <carsten.haitzler@arm.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: martin.lau@kernel.org
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ravi Bangoria <ravi.bangoria@amd.com>
Cc: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Link: https://lore.kernel.org/r/20221220035702.188413-2-yangjihong1@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-12-31 13:14:45 +01:00
..
accounting
arch x86/cpu: Restore AMD's DE_CFG MSR after resume 2022-11-16 09:58:31 +01:00
bootconfig tools/bootconfig: Define memblock_free_ptr() to fix build error 2021-09-15 09:49:48 -07:00
bpf bpftool: Fix NULL pointer dereference when pin {PROG, MAP, LINK} without FILE 2022-11-16 09:58:15 +01:00
build tools build: Switch to new openssl API for test-libcrypto 2022-08-25 11:40:14 +02:00
cgroup
debugging
edid
firewire
firmware
gpio
hv
iio tools: iio: iio_generic_buffer: Fix read size 2022-12-02 17:41:10 +01:00
include tools/include: Add _RET_IP_ and math definitions to kernel.h 2022-12-31 13:14:44 +01:00
io_uring tools/io_uring/io_uring-cp: sync with liburing example 2021-08-13 08:58:11 -06:00
kvm/kvm_stat tools/kvm_stat: fix display of error when multiple processes are found 2022-08-11 13:07:51 +02:00
laptop
leds
lib libbpf: Avoid enum forward-declarations in public API in C++ mode 2022-12-31 13:14:43 +01:00
memory-model
objtool objtool, kcsan: Add volatile read/write instrumentation to whitelist 2022-12-31 13:13:57 +01:00
pci tools: PCI: Zero-initialize param 2021-08-05 11:01:30 +01:00
pcmcia
perf perf debug: Set debug_peo_args and redirect_to_stderr variable to correct values in perf_quiet_option() 2022-12-31 13:14:45 +01:00
power tools/power turbostat: fix ICX DRAM power numbers 2022-06-09 10:22:32 +02:00
rcu
scripts
spi
testing KVM: selftests: Fix build regression by using accessor function 2022-12-31 13:14:44 +01:00
thermal/tmon tools/thermal: Fix possible path truncations 2022-08-17 14:24:15 +02:00
time
tracing tools/latency-collector: Use correct size when writing queue_full_warning 2021-11-18 19:16:19 +01:00
usb usb: testusb: Fix for showing the connection speed 2021-09-14 10:31:41 +02:00
virtio tools/virtio: compile with -pthread 2022-05-25 09:57:25 +02:00
vm tools/vm/slabinfo-gnuplot: use "grep -E" instead of "egrep" 2022-12-08 11:28:42 +01:00
wmi
Makefile