Revision 5501e9229a80d95a1ea68609f44c447a75d23ed5 authored by Adrian Hunter on 07 January 2021, 17:41:59 UTC, committed by Arnaldo Carvalho de Melo on 15 January 2021, 20:28:27 UTC
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>
1 parent a1bf230
lld-version.sh
#!/bin/sh
# SPDX-License-Identifier: GPL-2.0
#
# Usage: $ ./scripts/lld-version.sh ld.lld
#
# Print the linker version of `ld.lld' in a 5 or 6-digit form
# such as `100001' for ld.lld 10.0.1 etc.
linker_string="$($* --version)"
if ! ( echo $linker_string | grep -q LLD ); then
echo 0
exit 1
fi
VERSION=$(echo $linker_string | cut -d ' ' -f 2)
MAJOR=$(echo $VERSION | cut -d . -f 1)
MINOR=$(echo $VERSION | cut -d . -f 2)
PATCHLEVEL=$(echo $VERSION | cut -d . -f 3)
printf "%d%02d%02d\\n" $MAJOR $MINOR $PATCHLEVEL
![swh spinner](/static/img/swh-spinner.gif)
Computing file changes ...