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75d7ba32f9
Use the dedicated non-atomic helpers for {clear,set}_bit() and their
test variants, i.e. the double-underscore versions. Depsite being
defined in atomic.h, and despite the kernel versions being atomic in the
kernel, tools' {clear,set}_bit() helpers aren't actually atomic. Move
to the double-underscore versions so that the versions that are expected
to be atomic (for kernel developers) can be made atomic without affecting
users that don't want atomic operations.
No functional change intended.
Signed-off-by: Sean Christopherson <seanjc@google.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Message-Id: <20221119013450.2643007-6-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
55 lines
1.4 KiB
C
55 lines
1.4 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include <linux/compiler.h>
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#include <linux/bitmap.h>
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#include <perf/cpumap.h>
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#include <internal/cpumap.h>
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#include "tests.h"
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#include "debug.h"
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#define NBITS 100
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static unsigned long *get_bitmap(const char *str, int nbits)
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{
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struct perf_cpu_map *map = perf_cpu_map__new(str);
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unsigned long *bm = NULL;
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int i;
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bm = bitmap_zalloc(nbits);
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if (map && bm) {
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for (i = 0; i < perf_cpu_map__nr(map); i++)
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__set_bit(perf_cpu_map__cpu(map, i).cpu, bm);
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}
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if (map)
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perf_cpu_map__put(map);
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return bm;
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}
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static int test_bitmap(const char *str)
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{
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unsigned long *bm = get_bitmap(str, NBITS);
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char buf[100];
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int ret;
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bitmap_scnprintf(bm, NBITS, buf, sizeof(buf));
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pr_debug("bitmap: %s\n", buf);
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ret = !strcmp(buf, str);
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free(bm);
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return ret;
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}
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static int test__bitmap_print(struct test_suite *test __maybe_unused, int subtest __maybe_unused)
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{
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TEST_ASSERT_VAL("failed to convert map", test_bitmap("1"));
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TEST_ASSERT_VAL("failed to convert map", test_bitmap("1,5"));
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TEST_ASSERT_VAL("failed to convert map", test_bitmap("1,3,5,7,9,11,13,15,17,19,21-40"));
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TEST_ASSERT_VAL("failed to convert map", test_bitmap("2-5"));
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TEST_ASSERT_VAL("failed to convert map", test_bitmap("1,3-6,8-10,24,35-37"));
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TEST_ASSERT_VAL("failed to convert map", test_bitmap("1,3-6,8-10,24,35-37"));
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TEST_ASSERT_VAL("failed to convert map", test_bitmap("1-10,12-20,22-30,32-40"));
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return 0;
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}
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DEFINE_SUITE("Print bitmap", bitmap_print);
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