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 |
|---|---|---|
| auth_gss | ||
| xprtrdma | ||
| Kconfig | -rw-r--r-- | 2.4 KB |
| Makefile | -rw-r--r-- | 628 bytes |
| addr.c | -rw-r--r-- | 8.7 KB |
| auth.c | -rw-r--r-- | 20.7 KB |
| auth_null.c | -rw-r--r-- | 2.7 KB |
| auth_unix.c | -rw-r--r-- | 5.3 KB |
| backchannel_rqst.c | -rw-r--r-- | 11.0 KB |
| cache.c | -rw-r--r-- | 45.6 KB |
| clnt.c | -rw-r--r-- | 71.1 KB |
| debugfs.c | -rw-r--r-- | 7.2 KB |
| netns.h | -rw-r--r-- | 976 bytes |
| rpc_pipe.c | -rw-r--r-- | 35.8 KB |
| rpcb_clnt.c | -rw-r--r-- | 27.4 KB |
| sched.c | -rw-r--r-- | 32.6 KB |
| socklib.c | -rw-r--r-- | 7.9 KB |
| socklib.h | -rw-r--r-- | 470 bytes |
| stats.c | -rw-r--r-- | 8.6 KB |
| sunrpc.h | -rw-r--r-- | 1.7 KB |
| sunrpc_syms.c | -rw-r--r-- | 2.8 KB |
| svc.c | -rw-r--r-- | 40.9 KB |
| svc_xprt.c | -rw-r--r-- | 38.0 KB |
| svcauth.c | -rw-r--r-- | 5.3 KB |
| svcauth_unix.c | -rw-r--r-- | 21.5 KB |
| svcsock.c | -rw-r--r-- | 39.0 KB |
| sysctl.c | -rw-r--r-- | 3.5 KB |
| timer.c | -rw-r--r-- | 2.9 KB |
| xdr.c | -rw-r--r-- | 54.9 KB |
| xprt.c | -rw-r--r-- | 52.0 KB |
| xprtmultipath.c | -rw-r--r-- | 13.3 KB |
| xprtsock.c | -rw-r--r-- | 81.7 KB |
Computing file changes ...
