https://github.com/torvalds/linux
Revision 8b464eac9765dfc84d0327fa3f3668faa439d1ce authored by Ian Rogers on 17 March 2022, 23:16:43 UTC, committed by Arnaldo Carvalho de Melo on 18 March 2022, 21:39:09 UTC
As seen with 'perf stat --null ..' and reported in: https://lore.kernel.org/lkml/YjCLcpcX2peeQVCH@kernel.org/ v2. Avoids setting evsel in the empty list case as suggested by Jiri Olsa. Committer testing: Before: $ perf stat --null sleep 1 Segmentation fault (core dumped) $ After: $ perf stat --null sleep 1 Performance counter stats for 'sleep 1': 1.010340646 seconds time elapsed 0.001420000 seconds user 0.000000000 seconds sys $ Fixes: 472832d2c000b961 ("perf evlist: Refactor evlist__for_each_cpu()") Reported-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Ian Rogers <irogers@google.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lore.kernel.org/r/20220317231643.550902-1-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Tip revision: 8b464eac9765dfc84d0327fa3f3668faa439d1ce authored by Ian Rogers on 17 March 2022, 23:16:43 UTC
perf evlist: Avoid iteration for empty evlist.
perf evlist: Avoid iteration for empty evlist.
Tip revision: 8b464ea
File | Mode | Size |
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damon | ||
kasan | ||
kfence | ||
Kconfig | -rw-r--r-- | 27.4 KB |
Kconfig.debug | -rw-r--r-- | 6.4 KB |
Makefile | -rw-r--r-- | 4.8 KB |
backing-dev.c | -rw-r--r-- | 26.4 KB |
balloon_compaction.c | -rw-r--r-- | 8.2 KB |
bootmem_info.c | -rw-r--r-- | 3.3 KB |
cma.c | -rw-r--r-- | 15.7 KB |
cma.h | -rw-r--r-- | 1.4 KB |
cma_debug.c | -rw-r--r-- | 4.5 KB |
cma_sysfs.c | -rw-r--r-- | 2.4 KB |
compaction.c | -rw-r--r-- | 83.6 KB |
debug.c | -rw-r--r-- | 6.9 KB |
debug_page_ref.c | -rw-r--r-- | 1.4 KB |
debug_vm_pgtable.c | -rw-r--r-- | 38.1 KB |
dmapool.c | -rw-r--r-- | 13.6 KB |
early_ioremap.c | -rw-r--r-- | 6.7 KB |
fadvise.c | -rw-r--r-- | 5.3 KB |
failslab.c | -rw-r--r-- | 1.4 KB |
filemap.c | -rw-r--r-- | 111.0 KB |
folio-compat.c | -rw-r--r-- | 3.7 KB |
frontswap.c | -rw-r--r-- | 7.9 KB |
gup.c | -rw-r--r-- | 89.7 KB |
gup_test.c | -rw-r--r-- | 5.6 KB |
gup_test.h | -rw-r--r-- | 938 bytes |
highmem.c | -rw-r--r-- | 19.6 KB |
hmm.c | -rw-r--r-- | 16.8 KB |
huge_memory.c | -rw-r--r-- | 85.6 KB |
hugetlb.c | -rw-r--r-- | 192.5 KB |
hugetlb_cgroup.c | -rw-r--r-- | 24.6 KB |
hugetlb_vmemmap.c | -rw-r--r-- | 13.0 KB |
hugetlb_vmemmap.h | -rw-r--r-- | 1.1 KB |
hwpoison-inject.c | -rw-r--r-- | 2.6 KB |
init-mm.c | -rw-r--r-- | 1.6 KB |
internal.h | -rw-r--r-- | 22.5 KB |
interval_tree.c | -rw-r--r-- | 3.1 KB |
io-mapping.c | -rw-r--r-- | 993 bytes |
ioremap.c | -rw-r--r-- | 1.2 KB |
khugepaged.c | -rw-r--r-- | 60.2 KB |
kmemleak.c | -rw-r--r-- | 56.8 KB |
ksm.c | -rw-r--r-- | 88.6 KB |
list_lru.c | -rw-r--r-- | 13.8 KB |
maccess.c | -rw-r--r-- | 9.1 KB |
madvise.c | -rw-r--r-- | 36.2 KB |
mapping_dirty_helpers.c | -rw-r--r-- | 10.5 KB |
memblock.c | -rw-r--r-- | 60.6 KB |
memcontrol.c | -rw-r--r-- | 191.9 KB |
memfd.c | -rw-r--r-- | 8.2 KB |
memory-failure.c | -rw-r--r-- | 60.7 KB |
memory.c | -rw-r--r-- | 148.4 KB |
memory_hotplug.c | -rw-r--r-- | 65.3 KB |
mempolicy.c | -rw-r--r-- | 77.8 KB |
mempool.c | -rw-r--r-- | 15.8 KB |
memremap.c | -rw-r--r-- | 13.8 KB |
memtest.c | -rw-r--r-- | 2.8 KB |
migrate.c | -rw-r--r-- | 87.9 KB |
mincore.c | -rw-r--r-- | 7.0 KB |
mlock.c | -rw-r--r-- | 22.5 KB |
mm_init.c | -rw-r--r-- | 5.3 KB |
mmap.c | -rw-r--r-- | 102.0 KB |
mmap_lock.c | -rw-r--r-- | 6.2 KB |
mmu_gather.c | -rw-r--r-- | 8.6 KB |
mmu_notifier.c | -rw-r--r-- | 35.0 KB |
mmzone.c | -rw-r--r-- | 2.2 KB |
mprotect.c | -rw-r--r-- | 17.7 KB |
mremap.c | -rw-r--r-- | 28.3 KB |
msync.c | -rw-r--r-- | 2.8 KB |
nommu.c | -rw-r--r-- | 44.3 KB |
oom_kill.c | -rw-r--r-- | 31.7 KB |
page-writeback.c | -rw-r--r-- | 89.8 KB |
page_alloc.c | -rw-r--r-- | 265.5 KB |
page_counter.c | -rw-r--r-- | 6.7 KB |
page_ext.c | -rw-r--r-- | 11.2 KB |
page_idle.c | -rw-r--r-- | 5.2 KB |
page_io.c | -rw-r--r-- | 11.2 KB |
page_isolation.c | -rw-r--r-- | 9.1 KB |
page_owner.c | -rw-r--r-- | 15.7 KB |
page_poison.c | -rw-r--r-- | 2.5 KB |
page_reporting.c | -rw-r--r-- | 10.3 KB |
page_reporting.h | -rw-r--r-- | 1.6 KB |
page_table_check.c | -rw-r--r-- | 6.4 KB |
page_vma_mapped.c | -rw-r--r-- | 8.7 KB |
pagewalk.c | -rw-r--r-- | 15.5 KB |
percpu-internal.h | -rw-r--r-- | 7.0 KB |
percpu-km.c | -rw-r--r-- | 3.2 KB |
percpu-stats.c | -rw-r--r-- | 5.9 KB |
percpu-vm.c | -rw-r--r-- | 11.7 KB |
percpu.c | -rw-r--r-- | 102.5 KB |
pgalloc-track.h | -rw-r--r-- | 1.3 KB |
pgtable-generic.c | -rw-r--r-- | 5.6 KB |
process_vm_access.c | -rw-r--r-- | 8.2 KB |
ptdump.c | -rw-r--r-- | 4.0 KB |
readahead.c | -rw-r--r-- | 19.6 KB |
rmap.c | -rw-r--r-- | 69.1 KB |
rodata_test.c | -rw-r--r-- | 1.3 KB |
secretmem.c | -rw-r--r-- | 5.5 KB |
shmem.c | -rw-r--r-- | 106.9 KB |
shuffle.c | -rw-r--r-- | 4.7 KB |
shuffle.h | -rw-r--r-- | 1.2 KB |
slab.c | -rw-r--r-- | 105.7 KB |
slab.h | -rw-r--r-- | 22.7 KB |
slab_common.c | -rw-r--r-- | 32.9 KB |
slob.c | -rw-r--r-- | 18.4 KB |
slub.c | -rw-r--r-- | 153.6 KB |
sparse-vmemmap.c | -rw-r--r-- | 15.7 KB |
sparse.c | -rw-r--r-- | 26.0 KB |
swap.c | -rw-r--r-- | 32.4 KB |
swap_cgroup.c | -rw-r--r-- | 5.1 KB |
swap_slots.c | -rw-r--r-- | 9.2 KB |
swap_state.c | -rw-r--r-- | 24.0 KB |
swapfile.c | -rw-r--r-- | 94.4 KB |
truncate.c | -rw-r--r-- | 26.5 KB |
usercopy.c | -rw-r--r-- | 9.6 KB |
userfaultfd.c | -rw-r--r-- | 17.7 KB |
util.c | -rw-r--r-- | 27.3 KB |
vmacache.c | -rw-r--r-- | 2.7 KB |
vmalloc.c | -rw-r--r-- | 103.1 KB |
vmpressure.c | -rw-r--r-- | 13.9 KB |
vmscan.c | -rw-r--r-- | 138.8 KB |
vmstat.c | -rw-r--r-- | 54.6 KB |
workingset.c | -rw-r--r-- | 21.7 KB |
z3fold.c | -rw-r--r-- | 47.0 KB |
zbud.c | -rw-r--r-- | 18.4 KB |
zpool.c | -rw-r--r-- | 11.2 KB |
zsmalloc.c | -rw-r--r-- | 57.3 KB |
zswap.c | -rw-r--r-- | 38.9 KB |
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