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
| File | Mode | Size |
|---|---|---|
| partitions | ||
| Kconfig | -rw-r--r-- | 6.7 KB |
| Kconfig.iosched | -rw-r--r-- | 1.3 KB |
| Makefile | -rw-r--r-- | 1.7 KB |
| badblocks.c | -rw-r--r-- | 14.1 KB |
| bfq-cgroup.c | -rw-r--r-- | 38.5 KB |
| bfq-iosched.c | -rw-r--r-- | 236.5 KB |
| bfq-iosched.h | -rw-r--r-- | 36.7 KB |
| bfq-wf2q.c | -rw-r--r-- | 52.4 KB |
| bio-integrity.c | -rw-r--r-- | 12.5 KB |
| bio.c | -rw-r--r-- | 44.0 KB |
| blk-cgroup-rwstat.c | -rw-r--r-- | 3.4 KB |
| blk-cgroup-rwstat.h | -rw-r--r-- | 3.9 KB |
| blk-cgroup.c | -rw-r--r-- | 50.0 KB |
| blk-core.c | -rw-r--r-- | 47.9 KB |
| blk-crypto-fallback.c | -rw-r--r-- | 18.2 KB |
| blk-crypto-internal.h | -rw-r--r-- | 5.4 KB |
| blk-crypto.c | -rw-r--r-- | 11.9 KB |
| blk-exec.c | -rw-r--r-- | 2.6 KB |
| blk-flush.c | -rw-r--r-- | 15.1 KB |
| blk-integrity.c | -rw-r--r-- | 11.8 KB |
| blk-ioc.c | -rw-r--r-- | 10.1 KB |
| blk-iocost.c | -rw-r--r-- | 96.1 KB |
| blk-iolatency.c | -rw-r--r-- | 28.0 KB |
| blk-lib.c | -rw-r--r-- | 11.4 KB |
| blk-map.c | -rw-r--r-- | 15.7 KB |
| blk-merge.c | -rw-r--r-- | 30.4 KB |
| blk-mq-cpumap.c | -rw-r--r-- | 2.2 KB |
| blk-mq-debugfs-zoned.c | -rw-r--r-- | 435 bytes |
| blk-mq-debugfs.c | -rw-r--r-- | 24.4 KB |
| blk-mq-debugfs.h | -rw-r--r-- | 2.7 KB |
| blk-mq-pci.c | -rw-r--r-- | 1.3 KB |
| blk-mq-rdma.c | -rw-r--r-- | 1.3 KB |
| blk-mq-sched.c | -rw-r--r-- | 17.0 KB |
| blk-mq-sched.h | -rw-r--r-- | 2.4 KB |
| blk-mq-sysfs.c | -rw-r--r-- | 8.3 KB |
| blk-mq-tag.c | -rw-r--r-- | 17.0 KB |
| blk-mq-tag.h | -rw-r--r-- | 2.3 KB |
| blk-mq-virtio.c | -rw-r--r-- | 1.3 KB |
| blk-mq.c | -rw-r--r-- | 96.9 KB |
| blk-mq.h | -rw-r--r-- | 9.4 KB |
| blk-pm.c | -rw-r--r-- | 6.8 KB |
| blk-pm.h | -rw-r--r-- | 1.5 KB |
| blk-rq-qos.c | -rw-r--r-- | 7.1 KB |
| blk-rq-qos.h | -rw-r--r-- | 5.0 KB |
| blk-settings.c | -rw-r--r-- | 27.9 KB |
| blk-stat.c | -rw-r--r-- | 4.8 KB |
| blk-stat.h | -rw-r--r-- | 4.6 KB |
| blk-sysfs.c | -rw-r--r-- | 24.4 KB |
| blk-throttle.c | -rw-r--r-- | 67.7 KB |
| blk-timeout.c | -rw-r--r-- | 4.1 KB |
| blk-wbt.c | -rw-r--r-- | 19.8 KB |
| blk-wbt.h | -rw-r--r-- | 2.8 KB |
| blk-zoned.c | -rw-r--r-- | 14.3 KB |
| blk.h | -rw-r--r-- | 11.1 KB |
| bounce.c | -rw-r--r-- | 9.4 KB |
| bsg-lib.c | -rw-r--r-- | 9.9 KB |
| bsg.c | -rw-r--r-- | 11.1 KB |
| cmdline-parser.c | -rw-r--r-- | 4.9 KB |
| elevator.c | -rw-r--r-- | 18.5 KB |
| genhd.c | -rw-r--r-- | 52.8 KB |
| ioctl.c | -rw-r--r-- | 15.5 KB |
| ioprio.c | -rw-r--r-- | 5.1 KB |
| keyslot-manager.c | -rw-r--r-- | 10.9 KB |
| kyber-iosched.c | -rw-r--r-- | 27.8 KB |
| mq-deadline.c | -rw-r--r-- | 20.8 KB |
| opal_proto.h | -rw-r--r-- | 9.4 KB |
| scsi_ioctl.c | -rw-r--r-- | 22.6 KB |
| sed-opal.c | -rw-r--r-- | 62.5 KB |
| t10-pi.c | -rw-r--r-- | 7.8 KB |
Computing file changes ...
