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d436f90a64
linux/tools/perf
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Ian Rogers d436f90a64 perf machine: Move machine's threads into its own abstraction 
Move thread_rb_node into the machine.c file. This hides the
implementation of threads from the rest of the code allowing for it to
be refactored.

Locking discipline is tightened up in this change. As the lock is now
encapsulated in threads, the findnew function requires holding it (as
it already did in machine). Rather than do conditionals with locks
based on whether the thread should be created (which could potentially
be error prone with a read lock match with a write unlock), have a
separate threads__find that won't create the thread and only holds the
read lock. This effectively duplicates the findnew logic, with the
existing findnew logic only operating under a write lock assuming
creation is necessary as a previous find failed. The creation may
still fail with the write lock due to another thread. The duplication
is removed in a later next patch that delegates the implementation to
hashtable.

Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Yang Jihong <yangjihong1@huawei.com>
Cc: Oliver Upton <oliver.upton@linux.dev>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/r/20240301053646.1449657-5-irogers@google.com
2024-03-03 22:51:44 -08:00
..
arch treewide: remove meaningless assignments in Makefiles 2024-02-23 14:19:07 -08:00
bench libperf cpumap: Replace usage of perf_cpu_map__new(NULL) with perf_cpu_map__new_online_cpus() 2023-12-12 14:55:13 -03:00
dlfilters perf dlfilter: Add a test for object_code() 2023-09-30 00:09:06 -07:00
Documentation perf: script: prefer capstone to XED 2024-02-20 18:07:34 -08:00
include/perf perf dlfilter: Add al_cleanup() 2023-08-15 16:41:49 -03:00
jvmti
pmu-events perf vendor events amd: Fix Zen 4 cache latency events 2024-03-03 22:49:37 -08:00
python
scripts perf scripts python arm-cs-trace-disasm.py: Do not ignore disam first sample 2023-12-20 14:31:59 -03:00
tests perf test: Fix spelling mistake "curent" -> "current" 2024-02-26 21:41:27 -08:00
trace tools headers uapi: Sync linux/stat.h with the kernel sources to pick STATX_MNT_ID_UNIQUE 2024-01-26 10:51:48 -03:00
ui perf: script: prefer capstone to XED 2024-02-20 18:07:34 -08:00
util perf machine: Move machine's threads into its own abstraction 2024-03-03 22:51:44 -08:00
.gitignore perf build: Shellcheck support for OUTPUT directory 2023-12-05 15:46:43 -03:00
Build
builtin-annotate.c perf annotate: Add --insn-stat option for debugging 2023-12-23 22:40:17 -03:00
builtin-bench.c perf tools changes for v6.6: 2023-09-09 20:06:17 -07:00
builtin-buildid-cache.c perf buildid-cache: Fix use of uninitialized value 2023-10-12 10:01:56 -07:00
builtin-buildid-list.c perf util: Move input_name to util 2023-04-10 19:21:31 -03:00
builtin-c2c.c perf mem: Clean up perf_pmus__num_mem_pmus() 2024-01-24 14:05:22 -08:00
builtin-config.c perf path: Make mkpath thread safe, remove 16384 bytes from .bss 2023-05-28 10:24:14 -03:00
builtin-daemon.c perf tools: Add missing else to cmd_daemon subcommand condition 2023-06-27 12:09:44 -07:00
builtin-data.c perf util: Move input_name to util 2023-04-10 19:21:31 -03:00
builtin-diff.c perf diff: Replaces some ',' as separator with the more usual ';' 2023-07-20 11:43:45 -03:00
builtin-evlist.c perf util: Move input_name to util 2023-04-10 19:21:31 -03:00
builtin-ftrace.c libperf cpumap: Replace usage of perf_cpu_map__new(NULL) with perf_cpu_map__new_online_cpus() 2023-12-12 14:55:13 -03:00
builtin-help.c perf path: Make mkpath thread safe, remove 16384 bytes from .bss 2023-05-28 10:24:14 -03:00
builtin-inject.c perf record: Lazy load kernel symbols 2023-11-09 13:49:32 -03:00
builtin-kallsyms.c perf symbol: Remove now unused symbol_conf.sort_by_name 2023-06-23 21:48:49 -07:00
builtin-kmem.c perf callchain: Use pthread keys for tls callchain_cursor 2023-06-12 15:57:54 -03:00
builtin-kvm.c perf evsel: Introduce evsel__name_is() method to check if the evsel name is equal to a given string 2023-04-24 14:28:11 -03:00
builtin-kwork.c perf kwork: Fix a build error on 32-bit 2023-11-21 10:02:38 -08:00
builtin-list.c perf list: For metricgroup only list include description 2024-02-16 16:07:34 -08:00
builtin-lock.c perf lock: Fix a memory leak on an error path 2023-11-27 10:21:27 -03:00
builtin-mem.c perf mem: Clean up perf_pmus__num_mem_pmus() 2024-01-24 14:05:22 -08:00
builtin-probe.c perf probe: Dynamically allocate params memory 2023-05-28 10:24:02 -03:00
builtin-record.c Merge branch 'perf-tools' into perf-tools-next 2024-02-12 12:19:21 -08:00
builtin-report.c perf report: Sort child tasks by tid 2024-03-03 22:50:55 -08:00
builtin-sched.c perf sched: Move curr_pid and cpu_last_switched initialization to perf_sched__{lat|map|replay}() 2024-02-09 14:08:41 -08:00
builtin-script.c perf: script: add raw|disasm arguments to --insn-trace option 2024-02-20 18:07:21 -08:00
builtin-stat.c perf stat: Support per-cluster aggregation 2024-02-09 14:59:53 -08:00
builtin-timechart.c perf addr_location: Add init/exit/copy functions 2023-06-12 15:57:53 -03:00
builtin-top.c Merge branch 'perf-tools' into perf-tools-next 2024-02-12 12:19:21 -08:00
builtin-trace.c perf trace: Ignore thread hashing in summary 2024-03-03 22:51:18 -08:00
builtin-version.c perf version: Display availability of OpenCSD support 2024-03-03 22:48:40 -08:00
builtin.h perf usage: Move usage strings 2023-04-10 19:20:53 -03:00
check-headers.sh perf tools: Add get_unaligned_leNN() 2023-10-17 12:40:02 -07:00
command-list.txt
CREDITS
design.txt
Makefile
Makefile.config treewide: remove meaningless assignments in Makefiles 2024-02-23 14:19:07 -08:00
Makefile.perf perf bpf: Check that the minimal vmlinux.h installed is the latest one 2024-02-26 08:16:08 -08:00
MANIFEST tools perf: Add arm64 sysreg files to MANIFEST 2023-11-22 11:17:53 -08:00
perf-archive.sh perf archive: Add new option '--unpack' to expand tarballs 2023-12-20 13:20:45 -03:00
perf-completion.sh perf shell completion: Support completion of metrics/metricgroups 2023-09-11 10:26:36 -03:00
perf-iostat.sh
perf-read-vdso.c
perf-sys.h
perf.c perf tools: Add --debug-file option to redirect debug output 2023-11-28 14:14:53 -03:00
perf.h perf util: Move perf_guest/host declarations 2023-04-10 19:22:05 -03:00