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Adrian Hunter c990621606 perf kcore_copy: Do not check /proc/modules is unchanged 
[ Upstream commit 5b427df27b ]

/proc/kallsyms and /proc/modules are compared before and after the copy
in order to ensure no changes during the copy.

However /proc/modules also might change due to reference counts changing
even though that does not make any difference.

Any modules loaded or unloaded should be visible in changes to kallsyms,
so it is not necessary to check /proc/modules also anyway.

Remove the comparison checking that /proc/modules is unchanged.

Fixes: fc1b691d76 ("perf buildid-cache: Add ability to add kcore to the cache")
Reported-by: Daniel Dao <dqminh@cloudflare.com>
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Tested-by: Daniel Dao <dqminh@cloudflare.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/r/20220914122429.8770-1-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-09-28 11:10:36 +02:00
..
arch perf symbol: Remove arch__symbols__fixup_end() 2022-05-09 09:05:09 +02:00
bench perf bench numa: Address compiler error on s390 2022-05-25 09:18:00 +02:00
Documentation perf c2c: Update documentation for metrics reorganization 2020-10-15 12:02:12 -03:00
examples/bpf
include/bpf
jvmti perf jvmti: Remove redundant jitdump line table entries 2020-05-29 16:51:38 -03:00
pmu-events perf jevents: Fix event syntax error caused by ExtSel 2022-06-09 10:21:21 +02:00
python tweewide: Fix most Shebang lines 2021-05-22 11:40:55 +02:00
scripts perf scripts python: exported-sql-viewer.py: Fix warning display 2021-06-03 09:00:28 +02:00
tests perf tests: Remove bash construct from record+zstd_comp_decomp.sh 2021-11-26 10:39:13 +01:00
trace perf beauty: Update copy of linux/socket.h with the kernel sources 2021-06-23 14:42:54 +02:00
ui perf hist: Fix memory leak of a perf_hpp_fmt 2021-12-08 09:03:20 +01:00
util perf kcore_copy: Do not check /proc/modules is unchanged 2022-09-28 11:10:36 +02:00
.gitignore .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
Build
builtin-annotate.c perf evsel: Rename perf_evsel__resort*() to evsel__resort*() 2020-05-28 10:03:24 -03:00
builtin-bench.c perf bench: Add build-id injection benchmark 2020-10-13 10:59:42 -03:00
builtin-buildid-cache.c perf tools: Pass build_id object to build_id__sprintf() 2020-10-14 08:46:22 -03:00
builtin-buildid-list.c
builtin-c2c.c perf c2c: Fix sorting in percent_rmt_hitm_cmp() 2022-06-14 18:32:37 +02:00
builtin-config.c
builtin-data.c perf data: Add support to store time of day in CTF data conversion 2020-08-06 09:43:37 -03:00
builtin-diff.c perf diff: Fix error return value in __cmd_diff() 2020-11-27 14:21:23 -03:00
builtin-evlist.c perf evsel: Rename perf_evsel__fprintf() to evsel__fprintf() 2020-05-28 10:03:24 -03:00
builtin-ftrace.c perf ftrace: Fix access to pid in array when setting a pid filter 2021-05-07 11:04:31 +02:00
builtin-help.c
builtin-inject.c perf inject: Fix itrace space allowed for new attributes 2021-12-17 10:14:41 +01:00
builtin-kallsyms.c
builtin-kmem.c perf kmem: Pass additional arguments to 'perf record' 2020-07-10 09:37:55 -03:00
builtin-kvm.c perf evlist: Fix the class prefix for 'struct evlist' 'add' evsel methods 2020-06-22 16:28:09 -03:00
builtin-list.c perf list: Remove dead code in argument check 2020-09-09 11:12:10 -03:00
builtin-lock.c perf lock: Don't free "lock_seq_stat" if read_count isn't zero 2020-11-12 17:55:41 -03:00
builtin-mem.c perf c2c: Fix 'perf c2c record -e list' to show the default events used 2020-05-28 10:03:25 -03:00
builtin-probe.c perf probe: Do not show the skipped events 2020-05-28 10:03:24 -03:00
builtin-record.c perf record: Fix continue profiling after draining the buffer 2021-03-04 11:38:09 +01:00
builtin-report.c perf report: Set PERF_SAMPLE_DATA_SRC bit for Arm SPE event 2022-04-27 13:53:56 +02:00
builtin-sched.c perf sched: Fix record failure when CONFIG_SCHEDSTATS is not set 2021-07-28 14:35:36 +02:00
builtin-script.c perf script: Fix CPU filtering of a script's switch events 2022-01-05 12:40:34 +01:00
builtin-stat.c perf tools: Allow creation of cgroup without open 2020-09-28 09:18:06 -03:00
builtin-timechart.c perf tools: Replace zero-length array with flexible-array 2020-05-28 10:03:27 -03:00
builtin-top.c perf top: Skip side-band event setup if HAVE_LIBBPF_SUPPORT is not set 2020-08-21 10:22:23 -03:00
builtin-trace.c perf trace: Fix segfault when trying to trace events by cgroup 2020-11-03 08:31:03 -03:00
builtin-version.c perf tools: Make GTK2 support opt-in 2020-09-04 17:11:59 -03:00
builtin.h
check-headers.sh x86/insn: Add a __ignore_sync_check__ marker 2022-07-25 11:26:11 +02:00
command-list.txt
CREDITS
design.txt perf tools: Support CAP_PERFMON capability 2020-04-16 12:19:08 -03:00
Makefile
Makefile.config perf python: Fix build when PYTHON_CONFIG is user supplied 2022-08-31 17:15:24 +02:00
Makefile.perf perf build: Fix ccache usage in $(CC) when generating arch errno table 2021-03-17 17:06:16 +01:00
MANIFEST
perf-archive.sh
perf-completion.sh
perf-read-vdso.c
perf-sys.h perf tests: Call test_attr__open() directly 2020-09-10 11:55:37 -03:00
perf-with-kcore.sh
perf.c perf tools: Fix perf's libperf_print callback 2022-04-13 21:01:07 +02:00
perf.h