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473f742e18
linux/tools/perf
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Namhyung Kim 473f742e18 perf tools: Use scandir() to iterate threads when synthesizing PERF_RECORD_ events 
Like in __event__synthesize_thread(), I think it's better to use
scandir() instead of the readdir() loop.  In case some malicious task
continues to create new threads, the readdir() loop will run over and
over to collect tids.  The scandir() also has the problem but the window
is much smaller since it doesn't do much work during the iteration.

Also add filter_task() function as we only care the tasks.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: https://lore.kernel.org/r/20210202090118.2008551-4-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-02-03 13:10:44 -03:00
..
arch perf stat: Add Topdown metrics events as default events 2021-02-03 13:10:43 -03:00
bench tools arch: Update arch/x86/lib/mem{cpy,set}_64.S copies used in 'perf bench mem memcpy' 2020-11-12 17:55:41 -03:00
Documentation perf script: Support DSO filter like in other perf tools 2021-02-03 13:10:43 -03:00
examples/bpf perf bpf examples: Fix bpf.h header include directive in 5sec.c example 2021-01-15 16:31:46 -03:00
include/bpf
jvmti perf jvmti: Remove redundant jitdump line table entries 2020-05-29 16:51:38 -03:00
pmu-events perf vendor events arm64: Reference common and uarch events for A76 2021-02-03 13:10:44 -03:00
python tweewide: Fix most Shebang lines 2020-12-08 23:30:04 +09:00
scripts perf script: Add min, max to futex-contention output, in addition to avg 2020-09-23 12:58:53 -03:00
tests perf test: Add parse-metric memory bandwidth testcase 2021-02-03 13:10:27 -03:00
trace tools arch x86: Sync the msr-index.h copy with the kernel sources 2020-12-24 09:24:19 -03:00
ui perf evlist: Use the right prefix for 'struct evlist' event selection methods 2020-11-30 15:01:08 -03:00
util perf tools: Use scandir() to iterate threads when synthesizing PERF_RECORD_ events 2021-02-03 13:10:44 -03:00
.gitignore .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
Build
builtin-annotate.c perf evlist: Use the right prefix for 'struct evlist' event group methods 2020-11-30 15:00:12 -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 buildid-cache: Add --debuginfod option to specify a server to fetch debug files 2020-12-28 12:20:39 -03:00
builtin-buildid-list.c perf buildid-list: Add support for mmap2's buildid events 2020-12-28 12:23:09 -03:00
builtin-c2c.c perf c2c: Add local variables for output metrics 2021-01-20 14:34:20 -03:00
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 evlist: Use the right prefix for 'struct evlist' diff methods 2020-11-30 15:18:48 -03:00
builtin-evlist.c perf evlist: Support pipe mode display 2020-12-17 14:36:17 -03:00
builtin-ftrace.c perf evlist: Use the right prefix for 'struct evlist' create maps methods 2020-11-30 14:56:52 -03:00
builtin-help.c
builtin-inject.c Merge remote-tracking branch 'torvalds/master' into perf/core 2020-11-30 08:56:55 -03:00
builtin-kallsyms.c
builtin-kmem.c perf evlist: Use the right prefix for 'struct evlist' 'find' methods 2020-11-30 09:48:07 -03:00
builtin-kvm.c perf evlist: Use the right prefix for 'struct evlist' mmap pages parsing method 2020-11-30 15:15:30 -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 mem: Support data page size 2021-01-20 14:34:20 -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 tools: Add 'ping' control command 2021-01-20 14:34:21 -03:00
builtin-report.c perf report: Support --header-only for pipe mode 2020-12-17 14:36:17 -03:00
builtin-sched.c perf evlist: Use the right prefix for 'struct evlist' 'find' methods 2020-11-30 09:48:07 -03:00
builtin-script.c perf script: Support DSO filter like in other perf tools 2021-02-03 13:10:43 -03:00
builtin-stat.c perf stat: Add Topdown metrics events as default events 2021-02-03 13:10:43 -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 evlist: Use the right prefix for 'struct evlist' mmap pages parsing method 2020-11-30 15:15:30 -03:00
builtin-trace.c perf evlist: Use the right prefix for 'struct evlist' mmap pages parsing method 2020-11-30 15:15:30 -03:00
builtin-version.c perf version: Add a feature for libpfm4 2020-11-04 09:42:40 -03:00
builtin.h
check-headers.sh perf s390: Move syscall.tbl check into check-headers.sh 2020-12-24 09:24:20 -03:00
command-list.txt
CREDITS
design.txt perf tools: Support CAP_PERFMON capability 2020-04-16 12:19:08 -03:00
Makefile tools: Let O= makes handle a relative path with -C option 2020-03-06 17:08:28 -03:00
Makefile.config perf build: Support build BPF skeletons with perf 2021-01-15 15:49:07 -03:00
Makefile.perf perf stat: Enable counting events for BPF programs 2021-01-20 14:25:28 -03:00
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.h