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>
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File | Mode | Size |
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Makefile | -rw-r--r-- | 1.3 KB |
bpf_sk_storage.c | -rw-r--r-- | 22.9 KB |
datagram.c | -rw-r--r-- | 20.5 KB |
datagram.h | -rw-r--r-- | 322 bytes |
dev.c | -rw-r--r-- | 282.1 KB |
dev_addr_lists.c | -rw-r--r-- | 24.2 KB |
dev_ioctl.c | -rw-r--r-- | 12.1 KB |
devlink.c | -rw-r--r-- | 266.0 KB |
drop_monitor.c | -rw-r--r-- | 40.3 KB |
dst.c | -rw-r--r-- | 7.9 KB |
dst_cache.c | -rw-r--r-- | 3.5 KB |
failover.c | -rw-r--r-- | 7.4 KB |
fib_notifier.c | -rw-r--r-- | 4.8 KB |
fib_rules.c | -rw-r--r-- | 30.1 KB |
filter.c | -rw-r--r-- | 278.8 KB |
flow_dissector.c | -rw-r--r-- | 48.0 KB |
flow_offload.c | -rw-r--r-- | 12.5 KB |
gen_estimator.c | -rw-r--r-- | 6.9 KB |
gen_stats.c | -rw-r--r-- | 11.5 KB |
gro_cells.c | -rw-r--r-- | 2.3 KB |
hwbm.c | -rw-r--r-- | 1.9 KB |
link_watch.c | -rw-r--r-- | 5.7 KB |
lwt_bpf.c | -rw-r--r-- | 14.7 KB |
lwtunnel.c | -rw-r--r-- | 8.8 KB |
neighbour.c | -rw-r--r-- | 91.4 KB |
net-procfs.c | -rw-r--r-- | 8.8 KB |
net-sysfs.c | -rw-r--r-- | 46.0 KB |
net-sysfs.h | -rw-r--r-- | 510 bytes |
net-traces.c | -rw-r--r-- | 1.7 KB |
net_namespace.c | -rw-r--r-- | 32.4 KB |
netclassid_cgroup.c | -rw-r--r-- | 3.3 KB |
netevent.c | -rw-r--r-- | 1.8 KB |
netpoll.c | -rw-r--r-- | 19.5 KB |
netprio_cgroup.c | -rw-r--r-- | 6.6 KB |
page_pool.c | -rw-r--r-- | 15.6 KB |
pktgen.c | -rw-r--r-- | 95.4 KB |
ptp_classifier.c | -rw-r--r-- | 7.4 KB |
request_sock.c | -rw-r--r-- | 5.0 KB |
rtnetlink.c | -rw-r--r-- | 136.3 KB |
scm.c | -rw-r--r-- | 8.3 KB |
secure_seq.c | -rw-r--r-- | 4.9 KB |
skbuff.c | -rw-r--r-- | 156.9 KB |
skmsg.c | -rw-r--r-- | 24.7 KB |
sock.c | -rw-r--r-- | 88.5 KB |
sock_diag.c | -rw-r--r-- | 7.8 KB |
sock_map.c | -rw-r--r-- | 37.2 KB |
sock_reuseport.c | -rw-r--r-- | 9.1 KB |
stream.c | -rw-r--r-- | 5.4 KB |
sysctl_net_core.c | -rw-r--r-- | 15.1 KB |
timestamping.c | -rw-r--r-- | 1.5 KB |
tso.c | -rw-r--r-- | 2.6 KB |
utils.c | -rw-r--r-- | 11.6 KB |
xdp.c | -rw-r--r-- | 12.2 KB |
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