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android_kernel_sony_sdm845/tools/perf
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Filename Latest commit message Latest commit date
Kyle Meyer cb993d3d3b perf tools: Increase MAX_NR_CPUS and MAX_CACHES 
[ Upstream commit 9f94c7f947e919c343b30f080285af53d0fa9902 ]

Attempting to profile 1024 or more CPUs with perf causes two errors:

  perf record -a
  [ perf record: Woken up X times to write data ]
  way too many cpu caches..
  [ perf record: Captured and wrote X MB perf.data (X samples) ]

  perf report -C 1024
  Error: failed to set  cpu bitmap
  Requested CPU 1024 too large. Consider raising MAX_NR_CPUS

  Increasing MAX_NR_CPUS from 1024 to 2048 and redefining MAX_CACHES as
  MAX_NR_CPUS * 4 returns normal functionality to perf:

  perf record -a
  [ perf record: Woken up X times to write data ]
  [ perf record: Captured and wrote X MB perf.data (X samples) ]

  perf report -C 1024
  ...

Signed-off-by: Kyle Meyer <kyle.meyer@hpe.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20190620193630.154025-1-meyerk@stormcage.eag.rdlabs.hpecorp.net
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2019-08-04 09:33:22 +02:00
..
arch perf cs-etm: Properly set the value of 'old' and 'head' in snapshot mode 2019-08-04 09:33:18 +02:00
bench perf bench numa: Add define for RUSAGE_THREAD if not present 2019-05-25 18:26:56 +02:00
Documentation perf config: Fix an error in the config template documentation 2019-04-20 09:07:48 +02:00
jvmti perf jit: Fix build issue on Ubuntu 2016-10-17 11:25:34 -03:00
pmu-events perf tools: Fix build with ARCH=x86_64 2018-01-23 19:57:07 +01:00
python perf python: Add tracepoint example 2016-07-12 16:23:35 -03:00
scripts perf script python: Fix export-to-postgresql.py occasional failure 2018-10-18 09:13:21 +02:00
tests perf test 6: Fix missing kvm module load for s390 2019-08-04 09:33:19 +02:00
trace perf trace: Check if MAP_32BIT is defined (again) 2017-01-26 08:24:36 +01:00
ui perf ui helpline: Use strlcpy() as a shorter form of strncpy() + explicit set nul 2019-07-10 09:55:36 +02:00
util perf tools: Increase MAX_NR_CPUS and MAX_CACHES 2019-08-04 09:33:22 +02:00
.gitignore perf tools: Add arch/*/include/generated/ to .gitignore 2016-05-30 12:41:46 -03:00
Build
builtin-annotate.c perf annotate: Add branch stack / basic block 2016-09-08 13:44:03 -03:00
builtin-bench.c
builtin-buildid-cache.c tools: Introduce str_error_r() 2016-07-12 15:19:47 -03:00
builtin-buildid-list.c
builtin-config.c perf config: Reimplement show_config() using config_set__for_each 2016-06-23 17:23:00 -03:00
builtin-data.c perf data ctf: Add '--all' option for 'perf data convert' 2016-06-28 10:54:57 -03:00
builtin-diff.c perf diff: Fix -o/--order option behavior (again) 2017-02-14 15:25:42 -08:00
builtin-evlist.c perf evlist: Rename for_each() macros to for_each_entry() 2016-06-23 11:26:15 -03:00
builtin-help.c perf help: Remove needless use of strncpy() 2019-07-10 09:55:36 +02:00
builtin-inject.c perf symbols: Remove symbol_filter_t machinery 2016-09-05 11:14:50 -03:00
builtin-kmem.c perf symbols: Remove symbol_filter_t machinery 2016-09-05 11:14:50 -03:00
builtin-kvm.c perf kvm: Use NSEC_PER_USEC 2016-08-23 15:37:33 -03:00
builtin-list.c perf list: Support long jevents descriptions 2016-10-03 21:35:47 -03:00
builtin-lock.c
builtin-mem.c perf mem: Fix --all-user/--all-kernel options 2017-01-26 08:24:35 +01:00
builtin-probe.c perf probe: Return errno when not hitting any event 2018-03-22 09:17:40 +01:00
builtin-record.c perf record: Add support for using symbols in address filters 2016-09-29 11:17:02 -03:00
builtin-report.c perf report: Enable group view with hierarchy 2016-09-13 16:43:41 -03:00
builtin-sched.c perf sched: Use linux/time64.h 2016-08-23 15:37:33 -03:00
builtin-script.c perf symbols: Remove symbol_filter_t machinery 2016-09-05 11:14:50 -03:00
builtin-stat.c perf stat: Fix core dump when flag T is used 2018-05-30 07:50:45 +02:00
builtin-timechart.c perf timechart: Use NSEC_PER_U?SEC 2016-08-23 15:37:33 -03:00
builtin-top.c perf top: Fix error handling in cmd_top() 2019-04-20 09:07:49 +02:00
builtin-trace.c perf trace: Add mmap alias for s390 2018-04-13 19:48:17 +02:00
builtin-version.c
builtin.h perf tools: Remove needless 'extern' from function prototypes 2016-03-23 15:06:35 -03:00
check-headers.sh tools include: Adopt linux/bits.h 2019-05-31 06:48:13 -07:00
command-list.txt
CREDITS
design.txt
Makefile perf tools: Disable parallelism for 'make clean' 2018-11-10 07:42:57 -08:00
Makefile.config perf tools: Fix build with ARCH=x86_64 2018-01-23 19:57:07 +01:00
Makefile.perf perf tools: Move headers check into bash script 2018-06-05 10:28:56 +02:00
MANIFEST tools include: Introduce linux/bug.h, from the kernel sources 2018-06-05 10:28:56 +02:00
perf-archive.sh
perf-completion.sh
perf-read-vdso.c
perf-sys.h perf powerpc: Fix build-test failure 2016-09-08 13:44:07 -03:00
perf-with-kcore.sh
perf.c perf tools: Just pr_debug() about not being able to read cacheline_size 2016-07-15 10:08:29 -03:00
perf.h perf tools: Increase MAX_NR_CPUS and MAX_CACHES 2019-08-04 09:33:22 +02:00