47dce51acc
Adding support to decompress file before reading build id. Adding filename__read_build_id and change its current versions to read_build_id. Shutting down stderr output of perf list in the shell test: 82: Check open filename arg using perf trace + vfs_getname : Ok because with decompression code in the place we the filename__read_build_id function is more verbose in case of error and the test did not account for that. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexei Budankov <abudankov@huawei.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <songliubraving@fb.com> Cc: Stephane Eranian <eranian@google.com> Link: http://lore.kernel.org/lkml/20201214105457.543111-7-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
44 lines
1.4 KiB
Bash
Executable File
44 lines
1.4 KiB
Bash
Executable File
#!/bin/sh
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# Check open filename arg using perf trace + vfs_getname
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# Uses the 'perf test shell' library to add probe:vfs_getname to the system
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# then use it with 'perf trace' using 'touch' to write to a temp file, then
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# checks that that was captured by the vfs_getname was used by 'perf trace',
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# that already handles "probe:vfs_getname" if present, and used in the
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# "open" syscall "filename" argument beautifier.
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# SPDX-License-Identifier: GPL-2.0
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# Arnaldo Carvalho de Melo <acme@kernel.org>, 2017
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. $(dirname $0)/lib/probe.sh
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skip_if_no_perf_probe || exit 2
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skip_if_no_perf_trace || exit 2
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. $(dirname $0)/lib/probe_vfs_getname.sh
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file=$(mktemp /tmp/temporary_file.XXXXX)
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trace_open_vfs_getname() {
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evts=$(echo $(perf list syscalls:sys_enter_open* 2>/dev/null | egrep 'open(at)? ' | sed -r 's/.*sys_enter_([a-z]+) +\[.*$/\1/') | sed 's/ /,/')
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perf trace -e $evts touch $file 2>&1 | \
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egrep " +[0-9]+\.[0-9]+ +\( +[0-9]+\.[0-9]+ ms\): +touch\/[0-9]+ open(at)?\((dfd: +CWD, +)?filename: +${file}, +flags: CREAT\|NOCTTY\|NONBLOCK\|WRONLY, +mode: +IRUGO\|IWUGO\) += +[0-9]+$"
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}
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add_probe_vfs_getname || skip_if_no_debuginfo
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err=$?
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if [ $err -ne 0 ] ; then
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exit $err
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fi
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# Do not use whatever ~/.perfconfig file, it may change the output
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# via trace.{show_timestamp,show_prefix,etc}
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export PERF_CONFIG=/dev/null
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trace_open_vfs_getname
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err=$?
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rm -f ${file}
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cleanup_probe_vfs_getname
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exit $err
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