summaryrefslogtreecommitdiff
path: root/include/linux/cache.h
diff options
context:
space:
mode:
authorMark Brown <broonie@kernel.org>2022-10-19 16:37:01 +0100
committerMark Brown <broonie@kernel.org>2022-10-19 16:37:01 +0100
commit008f05a72d32dcc14038801649ec67af765fcc3c (patch)
treec958a2ab7039ea3e03621b1cbae4fcad41ee947c /include/linux/cache.h
parent32def55d237e8507d4eb8442628fc2e59a899ea0 (diff)
parentdf496157a5afa1b6d1f4c46ad6549c2c346d1e59 (diff)
ASoC: jz4752b: Capture fixes
Merge series from Siarhei Volkau <lis8215@gmail.com>: The patchset fixes: - Line In path stays powered off during capturing or bypass to mixer. - incorrectly represented dB values in alsamixer, et al. - incorrect represented Capture input selector in alsamixer in Playback tab. - wrong control selected as Capture Master
Diffstat (limited to 'include/linux/cache.h')
-rw-r--r--include/linux/cache.h13
1 files changed, 13 insertions, 0 deletions
diff --git a/include/linux/cache.h b/include/linux/cache.h
index d742c57eaee5..5da1bbd96154 100644
--- a/include/linux/cache.h
+++ b/include/linux/cache.h
@@ -85,4 +85,17 @@
#define cache_line_size() L1_CACHE_BYTES
#endif
+/*
+ * Helper to add padding within a struct to ensure data fall into separate
+ * cachelines.
+ */
+#if defined(CONFIG_SMP)
+struct cacheline_padding {
+ char x[0];
+} ____cacheline_internodealigned_in_smp;
+#define CACHELINE_PADDING(name) struct cacheline_padding name
+#else
+#define CACHELINE_PADDING(name)
+#endif
+
#endif /* __LINUX_CACHE_H */