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ebcb9464a2
linux/tools/perf
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Arnaldo Carvalho de Melo ebcb9464a2 perf env: Do not return pointers to local variables 
It is possible to return a pointer to a local variable when looking up
the architecture name for the running system and no normalization is
done on that value, i.e. we may end up returning the uts.machine local
variable.

While this doesn't happen on most arches, as normalization takes place,
lets fix this by making that a static variable and optimize it a bit by
not always running uname(), only the first time.

Noticed in fedora rawhide running with:

  [perfbuilder@a5ff49d6e6e4 ~]$ gcc --version
  gcc (GCC) 10.0.1 20200216 (Red Hat 10.0.1-0.8)

Reported-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-03-02 11:23:03 -03:00
..
arch perf arch powerpc: Sync powerpc syscall.tbl with the kernel sources 2020-02-18 13:36:57 -03:00
bench perf env: Remove needless cpumap.h header 2019-09-20 09:19:21 -03:00
Documentation perf config: Document missing config options 2020-02-27 10:45:19 -03:00
examples/bpf Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next 2020-01-28 16:02:33 -08:00
include/bpf perf bpf: Remove bpf/ subdir from bpf.h headers used to build bpf events 2020-02-18 10:13:28 -03:00
jvmti perf jvmti: Link against tools/lib/ctype.h to have weak strlcpy() 2019-10-15 11:47:38 -03:00
pmu-events perf vendor events s390: Remove name from L1D_RO_EXCL_WRITES description 2019-12-16 13:40:26 -03:00
python treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 407 2019-06-05 17:37:14 +02:00
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 bp_account: Make global variable static 2020-03-02 11:15:07 -03:00
trace perf beauty prctl: Export the 'options' strarray 2020-02-11 16:41:50 -03:00
ui perf annotate: Remove privsize from symbol__annotate() args 2020-02-27 11:06:14 -03:00
util perf env: Do not return pointers to local variables 2020-03-02 11:23:03 -03:00
.gitignore perf: Update .gitignore file 2019-08-31 22:27:52 -03:00
Build
builtin-annotate.c perf annotate: Prefer cmdline option over default config 2020-02-27 10:45:08 -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 return type for histogram sorting comparision functions 2020-01-14 13:29:21 -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: Fix processing of ID index for injected instruction tracing 2019-12-04 12:39:53 -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: Check return value of strlist__add() for -ENOMEM 2020-02-27 11:03:13 -03:00
builtin-record.c perf record: Adapt affinity to machines with #CPUs > 1K 2020-01-06 11:46:09 -03:00
builtin-report.c perf annotate: Make perf config effective 2020-02-27 10:44:59 -03:00
builtin-sched.c perf sched timehist: Add support for filtering on CPU 2020-01-06 11:46:09 -03:00
builtin-script.c perf script: Fix invalid LBR/binary mismatch error 2019-11-28 08:08:38 -03:00
builtin-stat.c perf stat: Use affinity for reading 2019-11-29 12:20:45 -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: Remove privsize from symbol__annotate() args 2020-02-27 11:06:14 -03:00
builtin-trace.c perf trace: Resolve prctl's 'option' arg strings to numbers 2020-02-11 16:41:50 -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 tools include UAPI: Sync x86's syscalls_64.tbl, generic unistd.h and fcntl.h to pick up openat2 and pidfd_getfd 2020-02-11 16:41:06 -03:00
command-list.txt
CREDITS
design.txt
Makefile
Makefile.config libperf: Move to tools/lib/perf 2020-01-06 11:46:09 -03:00
Makefile.perf libperf: Move to tools/lib/perf 2020-01-06 11:46:09 -03:00
MANIFEST libperf: Move to tools/lib/perf 2020-01-06 11:46:09 -03:00
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 Merge branch 'x86/cpu' into perf/core, to pick up dependent changes 2019-06-17 12:29:16 +02:00
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