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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Kconfig | -rw-r--r-- | 642 bytes |
Makefile | -rw-r--r-- | 255 bytes |
af_smc.c | -rw-r--r-- | 65.1 KB |
smc.h | -rw-r--r-- | 8.5 KB |
smc_cdc.c | -rw-r--r-- | 13.6 KB |
smc_cdc.h | -rw-r--r-- | 8.3 KB |
smc_clc.c | -rw-r--r-- | 22.9 KB |
smc_clc.h | -rw-r--r-- | 11.0 KB |
smc_close.c | -rw-r--r-- | 12.2 KB |
smc_close.h | -rw-r--r-- | 759 bytes |
smc_core.c | -rw-r--r-- | 61.0 KB |
smc_core.h | -rw-r--r-- | 15.1 KB |
smc_diag.c | -rw-r--r-- | 7.4 KB |
smc_ib.c | -rw-r--r-- | 22.9 KB |
smc_ib.h | -rw-r--r-- | 3.6 KB |
smc_ism.c | -rw-r--r-- | 13.1 KB |
smc_ism.h | -rw-r--r-- | 1.8 KB |
smc_llc.c | -rw-r--r-- | 53.6 KB |
smc_llc.h | -rw-r--r-- | 3.6 KB |
smc_netlink.c | -rw-r--r-- | 1.9 KB |
smc_netlink.h | -rw-r--r-- | 605 bytes |
smc_netns.h | -rw-r--r-- | 381 bytes |
smc_pnet.c | -rw-r--r-- | 29.3 KB |
smc_pnet.h | -rw-r--r-- | 1.7 KB |
smc_rx.c | -rw-r--r-- | 11.6 KB |
smc_rx.h | -rw-r--r-- | 715 bytes |
smc_tx.c | -rw-r--r-- | 18.6 KB |
smc_tx.h | -rw-r--r-- | 1.1 KB |
smc_wr.c | -rw-r--r-- | 20.0 KB |
smc_wr.h | -rw-r--r-- | 3.5 KB |
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