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267ed5d859
linux/tools/perf
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Andi Kleen 267ed5d859 perf affinity: Add infrastructure to save/restore affinity 
The kernel perf subsystem has to IPI to the target CPU for many
operations. On systems with many CPUs and when managing many events the
overhead can be dominated by lots of IPIs.

An alternative is to set up CPU affinity in the perf tool, then set up
all the events for that CPU, and then move on to the next CPU.

Add some affinity management infrastructure to enable such a model.
Used in followon patches.

Committer notes:

Use zfree() in some places, add missing stdbool.h header, some minor
coding style changes.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: http://lore.kernel.org/lkml/20191121001522.180827-3-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-11-28 08:08:38 -03:00
..
arch perf maps: Rename map_groups.h to maps.h 2019-11-26 11:07:46 -03:00
bench perf env: Remove needless cpumap.h header 2019-09-20 09:19:21 -03:00
Documentation perf intel-pt: Add support for recording AUX area samples 2019-11-22 10:48:13 -03:00
examples/bpf
include/bpf
jvmti perf jvmti: Link against tools/lib/ctype.h to have weak strlcpy() 2019-10-15 11:47:38 -03:00
lib perf evsel: Avoid close(-1) 2019-11-06 15:43:05 -03:00
pmu-events perf vendor events power9: Fix commas so PMU event files are valid JSON 2019-11-12 15:26:55 -03:00
python
scripts perf scripts python: exported-sql-viewer.py: Fix use of TRUE with SQLite 2019-11-13 09:13:16 -03:00
tests perf tests: Rename tests/map_groups.c to tests/maps.c 2019-11-26 11:07:46 -03:00
trace perf trace: Wire up strarray__strtoul_flags() 2019-10-19 15:35:02 -03:00
ui perf maps: Rename map_groups.h to maps.h 2019-11-26 11:07:46 -03:00
util perf affinity: Add infrastructure to save/restore affinity 2019-11-28 08:08:38 -03:00
.gitignore perf: Update .gitignore file 2019-08-31 22:27:52 -03:00
Build
builtin-annotate.c pref tools: Make 'struct addr_map_symbol' contain 'struct map_symbol' 2019-11-12 08:20:53 -03:00
builtin-bench.c perf tools: Remove perf.h from source files not needing it 2019-08-29 17:38:32 -03:00
builtin-buildid-cache.c perf session: Return error code for perf_session__new() function on failure 2019-09-20 15:58:11 -03:00
builtin-buildid-list.c perf session: Return error code for perf_session__new() function on failure 2019-09-20 15:58:11 -03:00
builtin-c2c.c perf c2c: Fix memory leak in build_cl_output() 2019-10-15 12:08:13 -03:00
builtin-config.c perf tools: Remove util.h from where it is not needed 2019-09-20 09:19:20 -03:00
builtin-data.c perf debug: Remove needless include directives from debug.h 2019-08-31 19:10:19 -03:00
builtin-diff.c perf diff: Use llabs() with 64-bit values 2019-11-28 08:08:38 -03:00
builtin-evlist.c perf evsel: Introduce evsel_fprintf.h 2019-09-25 16:26:34 -03:00
builtin-ftrace.c perf auxtrace: Uninline functions that touch perf_session 2019-08-31 22:24:10 -03:00
builtin-help.c perf debug: Remove needless include directives from debug.h 2019-08-31 19:10:19 -03:00
builtin-inject.c perf inject: Cut AUX area samples 2019-11-22 10:48:13 -03:00
builtin-kallsyms.c perf dsos: Move the dsos struct and its methods to separate source files 2019-08-31 22:24:10 -03:00
builtin-kmem.c perf callchain: Use 'struct map_symbol' in 'struct callchain_cursor_node' 2019-11-12 08:20:53 -03:00
builtin-kvm.c perf kvm: Use evlist layer api when possible 2019-11-06 15:43:05 -03:00
builtin-list.c perf list: Hide deprecated events by default 2019-10-19 15:35:01 -03:00
builtin-lock.c perf session: Return error code for perf_session__new() function on failure 2019-09-20 15:58:11 -03:00
builtin-mem.c perf session: Return error code for perf_session__new() function on failure 2019-09-20 15:58:11 -03:00
builtin-probe.c perf probe: No need for symbol.h, symbol_conf is enough 2019-08-31 22:24:10 -03:00
builtin-record.c perf record: Add support for AUX area sampling 2019-11-22 10:48:13 -03:00
builtin-report.c perf thread: Rename thread->mg to thread->maps 2019-11-26 11:07:46 -03:00
builtin-sched.c perf callchain: Use 'struct map_symbol' in 'struct callchain_cursor_node' 2019-11-12 08:20:53 -03:00
builtin-script.c perf script: Move map__fprintf_srccode() to near its only user 2019-11-26 11:07:45 -03:00
builtin-stat.c perf parse: Report initial event parsing error 2019-11-18 19:14:29 -03:00
builtin-timechart.c perf session: Return error code for perf_session__new() function on failure 2019-09-20 15:58:11 -03:00
builtin-top.c perf annotate: Pass a 'map_symbol' in places receiving a pair of 'map' and 'symbol' pointers 2019-11-12 08:20:53 -03:00
builtin-trace.c perf parse: Report initial event parsing error 2019-11-18 19:14:29 -03:00
builtin-version.c perf symbols: Move mem_info and branch_info out of symbol.h 2019-08-31 22:27:48 -03:00
builtin.h perf tools: Remove needless util.h include from builtin.h 2019-08-28 17:19:34 -03:00
check-headers.sh Merge branch 'x86/core' into perf/core, to resolve conflicts and to pick up completed topic tree 2019-11-25 09:09:27 +01:00
command-list.txt
CREDITS
design.txt
Makefile
Makefile.config perf tools: Allow to link with libbpf dynamicaly 2019-11-26 11:17:45 -03:00
Makefile.perf perf tools: Allow to link with libbpf dynamicaly 2019-11-26 11:17:45 -03:00
MANIFEST
perf-archive.sh
perf-completion.sh
perf-read-vdso.c
perf-sys.h perf tools: Make usage of test_attr__* optional for perf-sys.h 2019-10-31 21:38:41 +01:00
perf-with-kcore.sh
perf.c libperf: Merge libperf_set_print() into libperf_init() 2019-09-25 09:51:49 -03:00
perf.h perf time-utils: Adopt rdclock() from perf.h 2019-08-29 17:38:32 -03:00