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3fb29a7514
perf trace requires root because it needs to use [ku]probes. Skip those test when it's not run as root. Before: $ perf test probe 47: Probe SDT events : Ok 104: test perf probe of function from different CU : FAILED! 115: perftool-testsuite_probe : FAILED! 117: Add vfs_getname probe to get syscall args filenames : FAILED! 118: probe libc's inet_pton & backtrace it with ping : FAILED! 119: Use vfs_getname probe to get syscall args filenames : FAILED! After: $ perf test probe 47: Probe SDT events : Ok 104: test perf probe of function from different CU : Skip 115: perftool-testsuite_probe : Skip 117: Add vfs_getname probe to get syscall args filenames : Skip 118: probe libc's inet_pton & backtrace it with ping : Skip 119: Use vfs_getname probe to get syscall args filenames : Skip Tested-by: Thomas Falcon <thomas.falcon@intel.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Link: https://lore.kernel.org/r/20250304022837.1877845-3-namhyung@kernel.org Signed-off-by: Namhyung Kim <namhyung@kernel.org>
90 lines
1.6 KiB
Bash
Executable File
90 lines
1.6 KiB
Bash
Executable File
#!/bin/bash
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# test perf probe of function from different CU
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# SPDX-License-Identifier: GPL-2.0
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set -e
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# shellcheck source=lib/probe.sh
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. "$(dirname $0)"/lib/probe.sh
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skip_if_no_perf_probe || exit 2
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[ "$(id -u)" == 0 ] || exit 2
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# skip if there's no gcc
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if ! [ -x "$(command -v gcc)" ]; then
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echo "failed: no gcc compiler"
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exit 2
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fi
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temp_dir=$(mktemp -d /tmp/perf-uprobe-different-cu-sh.XXXXXXXXXX)
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cleanup()
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{
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trap - EXIT TERM INT
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if [[ "${temp_dir}" =~ ^/tmp/perf-uprobe-different-cu-sh.*$ ]]; then
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echo "--- Cleaning up ---"
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perf probe -x ${temp_dir}/testfile -d foo || true
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rm -f "${temp_dir}/"*
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rmdir "${temp_dir}"
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fi
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}
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trap_cleanup()
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{
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cleanup
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exit 1
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}
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trap trap_cleanup EXIT TERM INT
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cat > ${temp_dir}/testfile-foo.h << EOF
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struct t
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{
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int *p;
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int c;
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};
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extern int foo (int i, struct t *t);
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EOF
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cat > ${temp_dir}/testfile-foo.c << EOF
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#include "testfile-foo.h"
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int
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foo (int i, struct t *t)
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{
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int j, res = 0;
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for (j = 0; j < i && j < t->c; j++)
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res += t->p[j];
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return res;
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}
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EOF
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cat > ${temp_dir}/testfile-main.c << EOF
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#include "testfile-foo.h"
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static struct t g;
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int
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main (int argc, char **argv)
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{
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int i;
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int j[argc];
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g.c = argc;
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g.p = j;
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for (i = 0; i < argc; i++)
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j[i] = (int) argv[i][0];
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return foo (3, &g);
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}
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EOF
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gcc -g -Og -flto -c ${temp_dir}/testfile-foo.c -o ${temp_dir}/testfile-foo.o
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gcc -g -Og -c ${temp_dir}/testfile-main.c -o ${temp_dir}/testfile-main.o
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gcc -g -Og -o ${temp_dir}/testfile ${temp_dir}/testfile-foo.o ${temp_dir}/testfile-main.o
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perf probe -x ${temp_dir}/testfile --funcs foo | grep "foo"
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perf probe -x ${temp_dir}/testfile foo
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cleanup
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