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Arnaldo Carvalho de Melo fdbdd7e858 perf evsel: Make perf_evsel__name() accept a NULL argument 
In which case it simply returns "unknown", like when it can't figure out
the evsel->name value.

This makes this code more robust and fixes a problem in 'perf trace'
where a NULL evsel was being passed to a routine that only used the
evsel for printing its name when a invalid syscall id was passed.

Reported-by: Leo Yan <leo.yan@linaro.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-f30ztaasku3z935cn3ak3h53@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-06-17 15:57:20 -03:00
..
accounting
arch Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-06-02 11:08:12 -07:00
bpf SPDX update for 5.2-rc2, round 1 2019-05-21 12:33:38 -07:00
build tools build feature tests: Add missing SPDX headers 2019-06-17 15:57:19 -03:00
cgroup
crypto crypto: user - rename err_cnt parameter 2018-12-07 14:15:00 +08:00
debugging tools: add a kernel-chktaint to tools/debugging 2019-01-08 16:29:52 -07:00
firewire treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
firmware tools/firmware/ihex2fw: Replace explicit alignment with ALIGN 2019-01-22 10:23:18 +01:00
gpio tools gpio: Allow overriding CFLAGS 2018-12-28 16:33:08 -03:00
hv treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 280 2019-06-05 17:36:36 +02:00
iio Merge 5.0-rc6 into staging-next 2019-02-11 09:25:01 +01:00
include Linux 5.2-rc3 2019-06-03 11:56:35 +02:00
io_uring tools/io_uring: sync with liburing 2019-05-23 10:25:26 -06:00
kvm/kvm_stat tools/kvm_stat: fix fields filter for child events 2019-05-24 21:27:17 +02:00
laptop
leds
lib Merge branch 'x86/cpu' into perf/core, to pick up dependent changes 2019-06-17 12:29:16 +02:00
memory-model tools/memory-model: Add support for synchronize_srcu_expedited() 2019-04-04 13:48:34 -07:00
nfsd
objtool treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
pci treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 341 2019-06-05 17:37:07 +02:00
pcmcia
perf perf evsel: Make perf_evsel__name() accept a NULL argument 2019-06-17 15:57:20 -03:00
power treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441 2019-06-05 17:37:17 +02:00
scripts
spi treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 178 2019-05-30 11:29:19 -07:00
testing SPDX update for 5.2-rc4 2019-06-08 12:52:42 -07:00
thermal/tmon treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 89 2019-05-24 17:37:52 +02:00
time treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282 2019-06-05 17:36:37 +02:00
usb treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
virtio virtio: fixes 2019-06-03 10:04:05 -07:00
vm treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282 2019-06-05 17:36:37 +02:00
wmi treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
Makefile Merge branch 'thorsten' into docs-next 2019-01-08 16:38:36 -07:00