Jiri Olsa b01c1f69c8 perf tools: Restore proper cwd on return from mnt namespace ... When reporting on 'record' server we try to retrieve/use the mnt namespace of the profiled tasks. We use following API with cookie to hold the return namespace, roughly: nsinfo__mountns_enter(struct nsinfo *nsi, struct nscookie *nc) setns(newns, 0); ... new ns related open.. ... nsinfo__mountns_exit(struct nscookie *nc) setns(nc->oldns) Once finished we setns to old namespace, which also sets the current working directory (cwd) to "/", trashing the cwd we had. This is mostly fine, because we use absolute paths almost everywhere, but it screws up 'perf diff': # perf diff failed to open perf.data: No such file or directory (try 'perf record' first) ... Adding the current working directory to be part of the cookie and restoring it in the nsinfo__mountns_exit call. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Krister Johansen <kjlx@templeofstupid.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Fixes: 843ff37bb5 ("perf symbols: Find symbols in different mount namespace") Link: http://lkml.kernel.org/r/20181101170001.30019-1-jolsa@kernel.org [ No need to check for NULL args for free(), use zfree() for struct members ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>		2018-11-19 12:12:26 -08:00
..
c++	perf tools: Fix a clang 7.0 compilation error	2018-06-25 11:59:37 -03:00
cs-etm-decoder	perf cs-etm: Fix start tracing packet handling	2018-07-31 10:57:56 -03:00
include	…
intel-pt-decoder	perf intel-pt: Add MTC and CYC timestamps to debug log	2018-11-05 14:53:54 -03:00
libunwind	…
scripting-engines	tools lib traceevent, perf tools: Rename enum print_arg_type to enum tep_print_arg_type	2018-09-19 17:17:44 -03:00
Build	tools build feature: Check if get_current_dir_name() is available	2018-11-19 12:12:17 -08:00
PERF-VERSION-GEN	…
annotate.c	perf annotate: Add Sparc support	2018-10-18 11:16:38 -03:00
annotate.h	perf annotate: Fix parsing aarch64 branch instructions after objdump update	2018-08-30 15:51:54 -03:00
arm-spe-pkt-decoder.c	…
arm-spe-pkt-decoder.h	…
arm-spe.c	…
arm-spe.h	…
auxtrace.c	perf script: Make itrace script default to all calls	2018-10-24 15:29:54 -03:00
auxtrace.h	perf script: Make itrace script default to all calls	2018-10-24 15:29:54 -03:00
block-range.c	…
block-range.h	…
bpf-loader.c	perf bpf-loader: use PTR_ERR_OR_ZERO inetead of return code	2018-09-19 10:25:09 -03:00
bpf-loader.h	perf bpf: Make bpf__setup_output_event() return the bpf-output event	2018-08-08 15:55:58 -03:00
bpf-prologue.c	docs: Fix some broken references	2018-06-15 18:10:01 -03:00
bpf-prologue.h	…
branch.c	…
branch.h	…
build-id.c	perf thread: Make thread__find_map() return the map	2018-04-26 13:47:08 -03:00
build-id.h	…
cache.h	…
call-path.c	…
call-path.h	…
callchain.c	…
callchain.h	…
cgroup.c	perf cgroup: Make evlist__find_cgroup() more compact	2018-06-04 10:28:50 -03:00
cgroup.h	…
cloexec.c	…
cloexec.h	…
color.c	…
color.h	…
comm.c	perf tools: Fix struct comm_str removal crash	2018-07-24 14:54:03 -03:00
comm.h	…
compress.h	perf tools: Add is_compressed callback to compressions array	2018-08-20 08:54:59 -03:00
config.c	perf config: Call perf_config__init() lazily	2018-05-16 16:11:09 -03:00
config.h	perf config: Call perf_config__init() lazily	2018-05-16 16:11:09 -03:00
counts.c	…
counts.h	…
cpumap.c	…
cpumap.h	…
cs-etm.c	perf cs-etm: Correct CPU mode for samples	2018-10-31 09:57:50 -03:00
cs-etm.h	coresight: Move to SPDX identifier	2018-04-19 12:29:41 -03:00
ctype.c	…
data-convert-bt.c	tools lib traceevent, perf tools: Rename enum format_flags to enum tep_format_flags	2018-09-19 17:14:13 -03:00
data-convert-bt.h	…
data-convert.h	…
data.c	…
data.h	…
db-export.c	perf db-export: Add trace begin / end branch type variants	2018-09-20 11:10:25 -03:00
db-export.h	…
debug.c	…
debug.h	…
demangle-java.c	…
demangle-java.h	…
demangle-rust.c	…
demangle-rust.h	…
drv_configs.c	…
drv_configs.h	…
dso.c	perf tools: Remove ext from struct kmod_path	2018-08-20 08:54:59 -03:00
dso.h	perf tools: Remove ext from struct kmod_path	2018-08-20 08:54:59 -03:00
dump-insn.c	…
dump-insn.h	…
dwarf-aux.c	perf config: Rename to HAVE_DWARF_GETLOCATIONS_SUPPORT	2018-04-02 13:50:24 -03:00
dwarf-aux.h	…
dwarf-regs.c	…
env.c	perf machine: Add nr_cpus_avail()	2018-05-22 10:52:49 -03:00
env.h	perf record: Encode -k clockid frequency into Perf trace	2018-10-18 11:16:38 -03:00
event.c	perf tools: Don't clone maps from parent when synthesizing forks	2018-10-31 10:18:01 -03:00
event.h	perf machine: Synthesize and process mmap events for x86 PTI entry trampolines	2018-05-23 10:26:39 -03:00
evlist.c	perf evlist: Move perf_evsel__reset_weak_group into evlist	2018-11-05 14:37:09 -03:00
evlist.h	perf evlist: Move perf_evsel__reset_weak_group into evlist	2018-11-05 14:37:09 -03:00
evsel.c	perf tools: Fix crash on synthesizing the unit	2018-11-12 08:37:49 -08:00
evsel.h	perf trace: Introduce per-event maximum number of events property	2018-10-22 14:27:12 -03:00
evsel_fprintf.c	tools lib traceevent, perf tools: Rename struct format{_field} to struct tep_format{_field}	2018-09-19 17:13:15 -03:00
expr.h	…
expr.y	…
find-vdso-map.c	…
genelf.c	perf tools: Fix spelling mistake: "builid" -> "buildid"	2018-04-30 12:02:03 -03:00
genelf.h	perf jitdump: Add Sparc support.	2018-10-18 11:16:38 -03:00
genelf_debug.c	…
generate-cmdlist.sh	perf tools: Rename HAVE_SYSCALL_TABLE to HAVE_SYSCALL_TABLE_SUPPORT	2018-04-12 10:33:31 -03:00
get_current_dir_name.c	tools build feature: Check if get_current_dir_name() is available	2018-11-19 12:12:17 -08:00
group.h	…
header.c	perf record: Encode -k clockid frequency into Perf trace	2018-10-18 11:16:38 -03:00
header.h	perf record: Encode -k clockid frequency into Perf trace	2018-10-18 11:16:38 -03:00
help-unknown-cmd.c	…
help-unknown-cmd.h	…
hist.c	perf hists: Reimplement hists__has_callchains()	2018-06-07 14:42:27 -03:00
hist.h	perf hists: Clarify callchain disabling when available	2018-07-24 14:37:33 -03:00
intel-bts.c	perf intel-pt/bts: Calculate cpumode for synthesized samples	2018-10-31 12:56:26 -03:00
intel-bts.h	…
intel-pt.c	perf intel-pt: Add more event information to debug log	2018-11-05 14:53:37 -03:00
intel-pt.h	…
intlist.c	…
intlist.h	…
jit.h	…
jitdump.c	…
jitdump.h	…
kvm-stat.h	…
levenshtein.c	…
levenshtein.h	…
llvm-utils.c	perf bpf: Give precedence to bpf header dir	2018-08-30 15:52:20 -03:00
llvm-utils.h	perf llvm: Allow passing options to llc in addition to clang	2018-08-20 08:54:58 -03:00
lzma.c	perf tools: Add lzma_is_compressed function	2018-08-20 08:54:59 -03:00
machine.c	perf tools: Don't clone maps from parent when synthesizing forks	2018-10-31 10:18:01 -03:00
machine.h	tools lib traceevent, perf tools: Rename pevent_set_* APIs	2018-08-13 15:22:10 -03:00
map.c	Merge remote-tracking branch 'acme/perf/urgent' into perf/core	2018-09-18 17:20:41 -03:00
map.h	perf map: Optimize maps__fixup_overlappings()	2018-08-08 15:56:00 -03:00
mem-events.c	…
mem-events.h	…
mem2node.c	…
mem2node.h	…
memswap.c	…
memswap.h	…
metricgroup.c	perf list: Unify metric group description format with PMU event description	2018-07-31 11:35:44 -03:00
metricgroup.h	perf stat: Add transaction flag (-T) support for s390	2018-07-24 14:49:37 -03:00
mmap.c	perf tools: Add 'struct perf_mmap' arg to record__write()	2018-09-19 10:25:11 -03:00
mmap.h	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2018-10-24 06:47:44 +01:00
namespaces.c	perf tools: Restore proper cwd on return from mnt namespace	2018-11-19 12:12:26 -08:00
namespaces.h	perf tools: Restore proper cwd on return from mnt namespace	2018-11-19 12:12:26 -08:00
ordered-events.c	perf ordered_events: Prevent crossing max_alloc_size	2018-09-19 10:25:08 -03:00
ordered-events.h	perf ordered_events: Add 'struct ordered_events_buffer' layer	2018-09-19 10:24:57 -03:00
parse-branch-options.c	…
parse-branch-options.h	…
parse-events.c	perf evsel: Introduce per event max_events property	2018-10-19 16:31:09 -03:00
parse-events.h	perf evsel: Introduce per event max_events property	2018-10-19 16:31:09 -03:00
parse-events.l	perf evsel: Introduce per event max_events property	2018-10-19 16:31:09 -03:00
parse-events.y	perf tools: Fix error index for pmu event parser	2018-06-07 15:50:14 -03:00
parse-regs-options.c	…
parse-regs-options.h	…
path.c	…
path.h	…
perf-hooks-list.h	…
perf-hooks.c	…
perf-hooks.h	…
perf_regs.c	…
perf_regs.h	…
pmu.c	perf stat: Handle different PMU names with common prefix	2018-11-05 14:37:10 -03:00
pmu.h	…
pmu.l	…
pmu.y	…
print_binary.c	…
print_binary.h	…
probe-event.c	perf probe: Support SDT markers having reference counter (semaphore)	2018-09-24 04:44:54 -04:00
probe-event.h	perf probe: Support SDT markers having reference counter (semaphore)	2018-09-24 04:44:54 -04:00
probe-file.c	perf probe: Support SDT markers having reference counter (semaphore)	2018-09-24 04:44:54 -04:00
probe-file.h	perf probe: Support SDT markers having reference counter (semaphore)	2018-09-24 04:44:54 -04:00
probe-finder.c	…
probe-finder.h	…
pstack.c	…
pstack.h	…
python-ext-sources	…
python.c	tools lib traceevent, perf tools: Rename enum format_flags to enum tep_format_flags	2018-09-19 17:14:13 -03:00
rb_resort.h	…
rblist.c	…
rblist.h	…
record.c	…
rwsem.c	…
rwsem.h	…
s390-cpumsf-kernel.h	perf report: Add raw report support for s390 auxiliary trace	2018-08-08 15:26:48 -03:00
s390-cpumsf.c	perf report: Create auxiliary trace data files for s390	2018-08-30 15:52:20 -03:00
s390-cpumsf.h	perf auxtrace: Support for perf report -D for s390	2018-08-03 10:34:18 -03:00
sane_ctype.h	…
session.c	perf tools: Remove perf_tool from event_op3	2018-09-19 10:25:10 -03:00
session.h	perf tools: Remove perf_tool from event_op2	2018-09-19 10:25:10 -03:00
setns.c	…
setup.py	perf python: More portable way to make CFLAGS work with clang	2018-10-08 14:30:45 -03:00
smt.c	…
smt.h	…
sort.c	tools lib traceevent, perf tools: Rename enum format_flags to enum tep_format_flags	2018-09-19 17:14:13 -03:00
sort.h	tools lib traceevent, perf tools: Rename struct pevent to struct tep_handle	2018-08-10 15:29:35 -03:00
srcline.c	perf report: Don't crash on invalid inline debug information	2018-10-16 14:52:21 -03:00
srcline.h	…
stat-display.c	perf stat: Move the display functions to stat-display.c	2018-08-30 15:52:25 -03:00
stat-shadow.c	perf stat: Pass a 'struct perf_stat_config' argument to global print functions	2018-08-30 15:52:23 -03:00
stat.c	perf tools: Remove perf_tool from event_op2	2018-09-19 10:25:10 -03:00
stat.h	perf tools: Remove perf_tool from event_op2	2018-09-19 10:25:10 -03:00
strbuf.c	perf strbuf: Match va_{add,copy} with va_end	2018-10-08 14:23:44 -03:00
strbuf.h	…
strfilter.c	…
strfilter.h	…
string.c	…
string2.h	…
strlist.c	…
strlist.h	…
svghelper.c	…
svghelper.h	…
symbol-elf.c	Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2018-11-03 18:13:43 -07:00
symbol-minimal.c	perf symbols: Unify symbol maps	2018-04-27 10:47:06 -03:00
symbol.c	perf symbols: Add BSS symbols when reading from /proc/kallsyms	2018-06-06 12:52:09 -03:00
symbol.h	Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2018-11-03 18:13:43 -07:00
symbol_fprintf.c	perf symbols: Unify symbol maps	2018-04-27 10:47:06 -03:00
syscalltbl.c	perf trace arm64: Use generated syscall table	2018-07-24 14:53:01 -03:00
syscalltbl.h	…
target.c	…
target.h	…
term.c	…
term.h	…
thread-stack.c	perf intel-pt: Insert callchain context into synthesized callchains	2018-10-31 12:54:27 -03:00
thread-stack.h	perf intel-pt: Insert callchain context into synthesized callchains	2018-10-31 12:54:27 -03:00
thread.c	perf tools: Don't clone maps from parent when synthesizing forks	2018-10-31 10:18:01 -03:00
thread.h	perf tools: Don't clone maps from parent when synthesizing forks	2018-10-31 10:18:01 -03:00
thread_map.c	…
thread_map.h	…
time-utils.c	…
time-utils.h	…
tool.h	perf tools: Remove perf_tool from event_op3	2018-09-19 10:25:10 -03:00
top.c	…
top.h	perf annotate stdio: Use annotation_options consistently	2018-06-04 10:28:52 -03:00
trace-event-info.c	perf tools: Cleanup trace-event-info 'tdata' leak	2018-10-08 14:23:45 -03:00
trace-event-parse.c	tools lib traceevent, perf tools: Move struct tep_handler definition in a local header file	2018-10-08 15:05:37 -03:00
trace-event-read.c	tools lib traceevent, perf tools: Move struct tep_handler definition in a local header file	2018-10-08 15:05:37 -03:00
trace-event-scripting.c	tools lib traceevent, perf tools: Rename struct pevent to struct tep_handle	2018-08-10 15:29:35 -03:00
trace-event.c	tools lib traceevent, perf tools: Rename struct event_format to struct tep_event_format	2018-09-19 17:11:50 -03:00
trace-event.h	tools lib traceevent: Rename struct plugin_list to struct tep_plugin_list	2018-09-19 17:29:26 -03:00
trigger.h	…
tsc.c	…
tsc.h	…
units.c	…
units.h	…
unwind-libdw.c	perf unwind: Take pgoff into account when reporting elf to libdwfl	2018-10-31 09:57:50 -03:00
unwind-libdw.h	…
unwind-libunwind-local.c	perf script: Show correct offsets for DWARF-based unwinding	2018-07-24 14:53:11 -03:00
unwind-libunwind.c	…
unwind.h	…
usage.c	…
util-cxx.h	…
util.c	perf util: Make copyfile_offset() global	2018-09-19 10:25:12 -03:00
util.h	tools build feature: Check if get_current_dir_name() is available	2018-11-19 12:12:17 -08:00
values.c	…
values.h	…
vdso.c	perf map: Remove enum_type arg to map_groups__first()	2018-04-26 13:47:15 -03:00
vdso.h	…
xyarray.c	…
xyarray.h	…
zlib.c	perf tools: Add gzip_is_compressed function	2018-08-20 08:54:59 -03:00