tools/perf/tests/shell/test_uprobe_from_different_cu.sh

Source file repositories/reference/linux-study-clean/tools/perf/tests/shell/test_uprobe_from_different_cu.sh

File Facts

System
Linux kernel
Corpus path
tools/perf/tests/shell/test_uprobe_from_different_cu.sh
Extension
.sh
Size
1662 bytes
Lines
90
Domain
Support Tooling And Documentation
Bucket
tools
Inferred role
Support Tooling And Documentation: tools
Status
atlas-only

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

#!/bin/bash
# test perf probe of function from different CU
# SPDX-License-Identifier: GPL-2.0

set -e

# shellcheck source=lib/probe.sh
. "$(dirname $0)"/lib/probe.sh

skip_if_no_perf_probe || exit 2
[ "$(id -u)" == 0 ] || exit 2

# skip if there's no gcc
if ! [ -x "$(command -v gcc)" ]; then
        echo "failed: no gcc compiler"
        exit 2
fi

temp_dir=$(mktemp -d /tmp/perf-uprobe-different-cu-sh.XXXXXXXXXX)

cleanup()
{
	trap - EXIT TERM INT
	if [[ "${temp_dir}" =~ ^/tmp/perf-uprobe-different-cu-sh.*$ ]]; then
		echo "--- Cleaning up ---"
		perf probe -x ${temp_dir}/testfile -d foo || true
		rm -f "${temp_dir}/"*
		rmdir "${temp_dir}"
	fi
}

trap_cleanup()
{
        cleanup
        exit 1
}

trap trap_cleanup EXIT TERM INT

cat > ${temp_dir}/testfile-foo.h << EOF
struct t
{
  int *p;
  int c;
};

extern int foo (int i, struct t *t);
EOF

cat > ${temp_dir}/testfile-foo.c << EOF
#include "testfile-foo.h"

int
foo (int i, struct t *t)
{
  int j, res = 0;
  for (j = 0; j < i && j < t->c; j++)
    res += t->p[j];

  return res;
}
EOF

cat > ${temp_dir}/testfile-main.c << EOF
#include "testfile-foo.h"

static struct t g;

int
main (int argc, char **argv)

Annotation

Implementation Notes