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075167363f
linux/tools/perf
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Andi Kleen 075167363f perf tools: Add a simple expression parser for JSON 
Add a simple expression parser good enough to parse JSON relation
expressions. The parser is implemented using bison.

This is just intended as an simple parser for internal usage in the
event lists, not the beginning of a "perf scripting language"

v2: Use expr__ prefix instead of expr_
    Support multiple free variables for parser

Committer note:

The v2 patch had:

  %define api.pure full

In expr.y, that is a feature introduced in bison 2.7, to have reentrant
parsers, not using global variables, which would make tools/perf stop
building with the bison version shipped in older distros, so Andi
realised that the other parsers (e.g. parse-events.y) were using:

  %pure-parser

Which is present in older versions of bison and fits the bill.

I added:

  CFLAGS_expr-bison.o += -DYYENABLE_NLS=0 -DYYLTYPE_IS_TRIVIAL=0 -w

To finally make it build, copying what was there for pmu-bison.o,
another parser.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/20170320201711.14142-8-andi@firstfloor.org
[ stdlib.h is needed in tests/expr.c for free() fixing build in systems such as ubuntu:16.04-x-s390 ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-03-23 11:39:27 -03:00
..
arch perf sdt x86: Add renaming logic for rNN and other registers 2017-03-21 11:07:17 -03:00
bench perf bench numa: Add more comment for -c option 2017-03-06 12:39:30 -03:00
Documentation perf stat: Collapse identically named events 2017-03-21 16:04:11 -03:00
jvmti perf kvmti: Remove unused Makefile file 2016-11-14 12:42:56 -03:00
pmu-events perf vendor events: Add mapping for KnightsMill PMU events 2017-03-03 19:07:13 -03:00
python perf python: Add tracepoint example 2016-07-12 16:23:35 -03:00
scripts perf/core improvements and fixes: 2016-08-04 11:02:38 +02:00
tests perf tools: Add a simple expression parser for JSON 2017-03-23 11:39:27 -03:00
trace perf trace: Check if MAP_32BIT is defined (again) 2016-12-20 09:37:40 -03:00
ui perf hists browser: Fix typo in function switch_data_file 2017-03-13 11:58:57 -03:00
util perf tools: Add a simple expression parser for JSON 2017-03-23 11:39:27 -03:00
.gitignore perf tools: Ignore generated files pmu-events/{jevents,pmu-events.c} for git 2017-03-13 10:59:36 -03:00
Build perf ftrace: Introduce new 'ftrace' tool 2017-01-26 11:43:01 -03:00
builtin-annotate.c perf tools: Add PERF_RECORD_NAMESPACES to include namespaces related info 2017-03-14 11:38:23 -03:00
builtin-bench.c perf subcmd: Create subcmd library 2015-12-17 14:27:14 -03:00
builtin-buildid-cache.c tools: Introduce str_error_r() 2016-07-12 15:19:47 -03:00
builtin-buildid-list.c perf subcmd: Create subcmd library 2015-12-17 14:27:14 -03:00
builtin-c2c.c perf c2c: Fix display bug when using pipe 2017-03-07 12:48:46 -03:00
builtin-config.c perf config: Mark where are config items from (user or system) 2016-11-14 13:10:37 -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 tools: Add PERF_RECORD_NAMESPACES to include namespaces related info 2017-03-14 11:38:23 -03:00
builtin-evlist.c perf evlist: Rename for_each() macros to for_each_entry() 2016-06-23 11:26:15 -03:00
builtin-ftrace.c perf ftrace: Use pager for displaying result 2017-03-03 19:07:17 -03:00
builtin-help.c perf tools: Propagate perf_config() errors 2017-01-27 12:23:33 -03:00
builtin-inject.c perf tools: Add PERF_RECORD_NAMESPACES to include namespaces related info 2017-03-14 11:38:23 -03:00
builtin-kallsyms.c perf kallsyms: Introduce tool to look for extended symbol information on the running kernel 2017-01-11 16:48:01 -03:00
builtin-kmem.c perf tools: Add PERF_RECORD_NAMESPACES to include namespaces related info 2017-03-14 11:38:23 -03:00
builtin-kvm.c perf tools: Add PERF_RECORD_NAMESPACES to include namespaces related info 2017-03-14 11:38:23 -03:00
builtin-list.c perf list: Add debug support for outputing alias string 2017-02-08 08:55:04 -03:00
builtin-lock.c perf lock: Make 'f' part of the common 'lock_options' 2017-03-17 11:49:07 -03:00
builtin-mem.c perf tools: Add PERF_RECORD_NAMESPACES to include namespaces related info 2017-03-14 11:38:23 -03:00
builtin-probe.c perf probe: Return errno when not hitting any event 2017-03-21 10:45:02 -03:00
builtin-record.c perf record: Synthesize namespace events for current processes 2017-03-14 15:16:09 -03:00
builtin-report.c perf tools: Add PERF_RECORD_NAMESPACES to include namespaces related info 2017-03-14 11:38:23 -03:00
builtin-sched.c perf sched timehist: Add --next option 2017-03-14 15:17:38 -03:00
builtin-script.c perf script: Add 'brstackinsn' for branch stacks 2017-03-16 09:24:35 -03:00
builtin-stat.c perf stat: Handle partially bad results with merging 2017-03-21 16:07:00 -03:00
builtin-timechart.c perf timechart: Use OPT_PARENT for common options 2017-03-17 11:49:08 -03:00
builtin-top.c perf utils: Check verbose flag properly 2017-02-20 11:35:54 -03:00
builtin-trace.c perf tools: Add PERF_RECORD_NAMESPACES to include namespaces related info 2017-03-14 11:38:23 -03:00
builtin-version.c perf tools: Move cmd_version() to builtin-version.c 2015-12-09 13:42:03 -03:00
builtin.h perf ftrace: Introduce new 'ftrace' tool 2017-01-26 11:43:01 -03:00
check-headers.sh perf tools: Move headers check into bash script 2016-12-15 16:25:44 -03:00
command-list.txt perf tools: Missing c2c command in command-list 2017-03-13 10:59:31 -03:00
CREDITS
design.txt
Makefile perf build tests: Do parallell builds with 'build-test' 2016-02-04 15:57:00 -03:00
Makefile.config tools build: Add test for sched_getcpu() 2017-03-03 19:07:19 -03:00
Makefile.perf perf build: Add special fixdep cleaning rule 2017-02-17 16:04:38 -03:00
MANIFEST tools include: Adopt kernel's refcount.h 2017-03-03 19:07:14 -03:00
perf-archive.sh
perf-completion.sh perf tools: Avoid confusion with preloaded bash function for perf bash completion 2015-03-19 13:53:27 -03:00
perf-read-vdso.c perf tools: Build programs to copy 32-bit compatibility 2014-10-29 10:32:48 -02:00
perf-sys.h perf powerpc: Fix build-test failure 2016-09-08 13:44:07 -03:00
perf-with-kcore.sh perf tools: Fix perf-with-kcore handling of arguments containing spaces 2015-08-06 16:48:27 -03:00
perf.c perf tools: Propagate perf_config() errors 2017-01-27 12:23:33 -03:00
perf.h perf tools: Add PERF_RECORD_NAMESPACES to include namespaces related info 2017-03-14 11:38:23 -03:00