https://github.com/torvalds/linux
In some cases, the number of cpus (nr_cpus_online) is confused with the maximum cpu number (nr_cpus_avail), which results in the error in the example below: Example on system with 8 cpus: Before: # echo 0 > /sys/devices/system/cpu/cpu2/online # ./perf record --kcore -e intel_pt// taskset --cpu-list 7 uname Linux [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.147 MB perf.data ] # ./perf script --itrace=e Requested CPU 7 too large. Consider raising MAX_NR_CPUS 0x25908 [0x8]: failed to process type: 68 [Invalid argument] After: # ./perf script --itrace=e # Fixes: 8c7274691f0d ("perf machine: Replace MAX_NR_CPUS with perf_env::nr_cpus_online") Fixes: 7df4e36a4785 ("perf session: Replace MAX_NR_CPUS with perf_env::nr_cpus_online") Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Tested-by: Kan Liang <kan.liang@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: stable@vger.kernel.org Link: http://lore.kernel.org/lkml/20210107174159.24897-1-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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- v2.6.19-rc5
- v2.6.19-rc4
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- v2.6.18-rc7
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- v2.6.17-rc4
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- v2.6.17
- v2.6.16-rc6
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- v2.6.12-rc4
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- v2.6.12
- v2.6.11-tree
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perf intel-pt: Fix 'CPU too large' error
File | Mode | Size |
---|---|---|
accounting | ||
arch | ||
bootconfig | ||
bpf | ||
build | ||
cgroup | ||
debugging | ||
edid | ||
firewire | ||
firmware | ||
gpio | ||
hv | ||
iio | ||
include | ||
io_uring | ||
kvm | ||
laptop | ||
leds | ||
lib | ||
memory-model | ||
objtool | ||
pci | ||
pcmcia | ||
perf | ||
power | ||
scripts | ||
spi | ||
testing | ||
thermal | ||
time | ||
usb | ||
virtio | ||
vm | ||
wmi | ||
Makefile | -rw-r--r-- | 6.1 KB |
![swh spinner](/static/img/swh-spinner.gif)
Computing file changes ...