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115 lines
3.1 KiB
115 lines
3.1 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* Referrence tracker self test. |
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* |
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* Copyright (c) 2021 Eric Dumazet <[email protected]> |
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*/ |
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#include <linux/init.h> |
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#include <linux/module.h> |
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#include <linux/delay.h> |
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#include <linux/ref_tracker.h> |
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#include <linux/slab.h> |
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#include <linux/timer.h> |
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static struct ref_tracker_dir ref_dir; |
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static struct ref_tracker *tracker[20]; |
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#define TRT_ALLOC(X) static noinline void \ |
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alloctest_ref_tracker_alloc##X(struct ref_tracker_dir *dir, \ |
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struct ref_tracker **trackerp) \ |
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{ \ |
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ref_tracker_alloc(dir, trackerp, GFP_KERNEL); \ |
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} |
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TRT_ALLOC(1) |
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TRT_ALLOC(2) |
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TRT_ALLOC(3) |
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TRT_ALLOC(4) |
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TRT_ALLOC(5) |
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TRT_ALLOC(6) |
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TRT_ALLOC(7) |
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TRT_ALLOC(8) |
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TRT_ALLOC(9) |
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TRT_ALLOC(10) |
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TRT_ALLOC(11) |
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TRT_ALLOC(12) |
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TRT_ALLOC(13) |
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TRT_ALLOC(14) |
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TRT_ALLOC(15) |
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TRT_ALLOC(16) |
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TRT_ALLOC(17) |
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TRT_ALLOC(18) |
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TRT_ALLOC(19) |
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#undef TRT_ALLOC |
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static noinline void |
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alloctest_ref_tracker_free(struct ref_tracker_dir *dir, |
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struct ref_tracker **trackerp) |
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{ |
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ref_tracker_free(dir, trackerp); |
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} |
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static struct timer_list test_ref_tracker_timer; |
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static atomic_t test_ref_timer_done = ATOMIC_INIT(0); |
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static void test_ref_tracker_timer_func(struct timer_list *t) |
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{ |
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ref_tracker_alloc(&ref_dir, &tracker[0], GFP_ATOMIC); |
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atomic_set(&test_ref_timer_done, 1); |
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} |
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static int __init test_ref_tracker_init(void) |
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{ |
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int i; |
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ref_tracker_dir_init(&ref_dir, 100); |
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timer_setup(&test_ref_tracker_timer, test_ref_tracker_timer_func, 0); |
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mod_timer(&test_ref_tracker_timer, jiffies + 1); |
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alloctest_ref_tracker_alloc1(&ref_dir, &tracker[1]); |
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alloctest_ref_tracker_alloc2(&ref_dir, &tracker[2]); |
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alloctest_ref_tracker_alloc3(&ref_dir, &tracker[3]); |
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alloctest_ref_tracker_alloc4(&ref_dir, &tracker[4]); |
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alloctest_ref_tracker_alloc5(&ref_dir, &tracker[5]); |
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alloctest_ref_tracker_alloc6(&ref_dir, &tracker[6]); |
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alloctest_ref_tracker_alloc7(&ref_dir, &tracker[7]); |
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alloctest_ref_tracker_alloc8(&ref_dir, &tracker[8]); |
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alloctest_ref_tracker_alloc9(&ref_dir, &tracker[9]); |
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alloctest_ref_tracker_alloc10(&ref_dir, &tracker[10]); |
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alloctest_ref_tracker_alloc11(&ref_dir, &tracker[11]); |
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alloctest_ref_tracker_alloc12(&ref_dir, &tracker[12]); |
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alloctest_ref_tracker_alloc13(&ref_dir, &tracker[13]); |
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alloctest_ref_tracker_alloc14(&ref_dir, &tracker[14]); |
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alloctest_ref_tracker_alloc15(&ref_dir, &tracker[15]); |
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alloctest_ref_tracker_alloc16(&ref_dir, &tracker[16]); |
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alloctest_ref_tracker_alloc17(&ref_dir, &tracker[17]); |
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alloctest_ref_tracker_alloc18(&ref_dir, &tracker[18]); |
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alloctest_ref_tracker_alloc19(&ref_dir, &tracker[19]); |
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/* free all trackers but first 0 and 1. */ |
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for (i = 2; i < ARRAY_SIZE(tracker); i++) |
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alloctest_ref_tracker_free(&ref_dir, &tracker[i]); |
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/* Attempt to free an already freed tracker. */ |
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alloctest_ref_tracker_free(&ref_dir, &tracker[2]); |
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while (!atomic_read(&test_ref_timer_done)) |
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msleep(1); |
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/* This should warn about tracker[0] & tracker[1] being not freed. */ |
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ref_tracker_dir_exit(&ref_dir); |
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return 0; |
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} |
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static void __exit test_ref_tracker_exit(void) |
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{ |
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} |
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module_init(test_ref_tracker_init); |
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module_exit(test_ref_tracker_exit); |
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MODULE_LICENSE("GPL v2");
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