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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
commitace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch)
treeb2d64bc10158fdd5497876388cd68142ca374ed3 /tools/perf/util/cacheline.h
parentInitial commit. (diff)
downloadlinux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz
linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tools/perf/util/cacheline.h')
-rw-r--r--tools/perf/util/cacheline.h36
1 files changed, 36 insertions, 0 deletions
diff --git a/tools/perf/util/cacheline.h b/tools/perf/util/cacheline.h
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+++ b/tools/perf/util/cacheline.h
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+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef PERF_CACHELINE_H
+#define PERF_CACHELINE_H
+
+#include <linux/compiler.h>
+
+int __pure cacheline_size(void);
+
+
+/*
+ * Some architectures have 'Adjacent Cacheline Prefetch' feature,
+ * which performs like the cacheline size being doubled.
+ */
+static inline u64 cl_address(u64 address, bool double_cl)
+{
+ u64 size = cacheline_size();
+
+ if (double_cl)
+ size *= 2;
+
+ /* return the cacheline of the address */
+ return (address & ~(size - 1));
+}
+
+static inline u64 cl_offset(u64 address, bool double_cl)
+{
+ u64 size = cacheline_size();
+
+ if (double_cl)
+ size *= 2;
+
+ /* return the offset inside cacheline */
+ return (address & (size - 1));
+}
+
+#endif // PERF_CACHELINE_H