tools/perf/tests/kmod-path.c
Source file repositories/reference/linux-study-clean/tools/perf/tests/kmod-path.c
File Facts
- System
- Linux kernel
- Corpus path
tools/perf/tests/kmod-path.c- Extension
.c- Size
- 6635 bytes
- Lines
- 164
- Domain
- Support Tooling And Documentation
- Bucket
- tools
- Inferred role
- Support Tooling And Documentation: implementation source
- Status
- source implementation candidate
Why This File Exists
Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.
- Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.
- Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.
Dependency Surface
stdbool.hstdlib.hstring.htests.hdso.hdebug.hevent.h
Detected Declarations
function testfunction test_is_kernel_modulefunction test__kmod_path__parse
Annotated Snippet
// SPDX-License-Identifier: GPL-2.0
#include <stdbool.h>
#include <stdlib.h>
#include <string.h>
#include "tests.h"
#include "dso.h"
#include "debug.h"
#include "event.h"
static int test(const char *path, bool alloc_name, bool kmod,
int comp, const char *name)
{
struct kmod_path m;
memset(&m, 0x0, sizeof(m));
TEST_ASSERT_VAL("kmod_path__parse",
!__kmod_path__parse(&m, path, alloc_name));
pr_debug("%s - alloc name %d, kmod %d, comp %d, name '%s'\n",
path, alloc_name, m.kmod, m.comp, m.name);
TEST_ASSERT_VAL("wrong kmod", m.kmod == kmod);
TEST_ASSERT_VAL("wrong comp", m.comp == comp);
if (name)
TEST_ASSERT_VAL("wrong name", m.name && !strcmp(name, m.name));
else
TEST_ASSERT_VAL("wrong name", !m.name);
free(m.name);
return 0;
}
static int test_is_kernel_module(const char *path, int cpumode, bool expect)
{
TEST_ASSERT_VAL("is_kernel_module",
(!!is_kernel_module(path, cpumode)) == (!!expect));
pr_debug("%s (cpumode: %d) - is_kernel_module: %s\n",
path, cpumode, expect ? "true" : "false");
return 0;
}
#define T(path, an, k, c, n) \
TEST_ASSERT_VAL("failed", !test(path, an, k, c, n))
#define M(path, c, e) \
TEST_ASSERT_VAL("failed", !test_is_kernel_module(path, c, e))
static int test__kmod_path__parse(struct test_suite *t __maybe_unused, int subtest __maybe_unused)
{
/* path alloc_name kmod comp name */
T("/xxxx/xxxx/x-x.ko", true , true, 0 , "[x_x]");
T("/xxxx/xxxx/x-x.ko", false , true, 0 , NULL );
T("/xxxx/xxxx/x-x.ko", true , true, 0 , "[x_x]");
T("/xxxx/xxxx/x-x.ko", false , true, 0 , NULL );
M("/xxxx/xxxx/x-x.ko", PERF_RECORD_MISC_CPUMODE_UNKNOWN, true);
M("/xxxx/xxxx/x-x.ko", PERF_RECORD_MISC_KERNEL, true);
M("/xxxx/xxxx/x-x.ko", PERF_RECORD_MISC_USER, false);
#ifdef HAVE_ZLIB_SUPPORT
/* path alloc_name kmod comp name */
T("/xxxx/xxxx/x.ko.gz", true , true, 1 , "[x]");
T("/xxxx/xxxx/x.ko.gz", false , true, 1 , NULL );
T("/xxxx/xxxx/x.ko.gz", true , true, 1 , "[x]");
T("/xxxx/xxxx/x.ko.gz", false , true, 1 , NULL );
M("/xxxx/xxxx/x.ko.gz", PERF_RECORD_MISC_CPUMODE_UNKNOWN, true);
M("/xxxx/xxxx/x.ko.gz", PERF_RECORD_MISC_KERNEL, true);
M("/xxxx/xxxx/x.ko.gz", PERF_RECORD_MISC_USER, false);
/* path alloc_name kmod comp name */
T("/xxxx/xxxx/x.gz", true , false, 1 , "x.gz");
T("/xxxx/xxxx/x.gz", false , false, 1 , NULL );
T("/xxxx/xxxx/x.gz", true , false, 1 , "x.gz");
T("/xxxx/xxxx/x.gz", false , false, 1 , NULL );
M("/xxxx/xxxx/x.gz", PERF_RECORD_MISC_CPUMODE_UNKNOWN, false);
M("/xxxx/xxxx/x.gz", PERF_RECORD_MISC_KERNEL, false);
M("/xxxx/xxxx/x.gz", PERF_RECORD_MISC_USER, false);
/* path alloc_name kmod comp name */
T("x.gz", true , false, 1 , "x.gz");
T("x.gz", false , false, 1 , NULL );
T("x.gz", true , false, 1 , "x.gz");
T("x.gz", false , false, 1 , NULL );
M("x.gz", PERF_RECORD_MISC_CPUMODE_UNKNOWN, false);
M("x.gz", PERF_RECORD_MISC_KERNEL, false);
M("x.gz", PERF_RECORD_MISC_USER, false);
/* path alloc_name kmod comp name */
T("x.ko.gz", true , true, 1 , "[x]");
Annotation
- Immediate include surface: `stdbool.h`, `stdlib.h`, `string.h`, `tests.h`, `dso.h`, `debug.h`, `event.h`.
- Detected declarations: `function test`, `function test_is_kernel_module`, `function test__kmod_path__parse`.
- Atlas domain: Support Tooling And Documentation / tools.
- Implementation status: source implementation candidate.
Implementation Notes
- This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
- Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
- Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.