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author | Nick Terrell <terrelln@fb.com> | 2022-12-13 16:21:55 -0800 |
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committer | Nick Terrell <terrelln@fb.com> | 2022-12-13 16:21:55 -0800 |
commit | 4f2c0a4acffbec01079c28f839422e64ddeff004 (patch) | |
tree | 06ada4a8a6d94a94c93944806041b8c994cebfc5 /lib/trace_readwrite.c | |
parent | 88a309465b3f05a100c3b81966982c0f9f5d23a6 (diff) | |
parent | 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 (diff) | |
download | linux-4f2c0a4acffbec01079c28f839422e64ddeff004.tar.bz2 |
Merge branch 'main' into zstd-linus
Diffstat (limited to 'lib/trace_readwrite.c')
-rw-r--r-- | lib/trace_readwrite.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/lib/trace_readwrite.c b/lib/trace_readwrite.c new file mode 100644 index 000000000000..88637038b30c --- /dev/null +++ b/lib/trace_readwrite.c @@ -0,0 +1,47 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Register read and write tracepoints + * + * Copyright (c) 2021-2022 Qualcomm Innovation Center, Inc. All rights reserved. + */ + +#include <linux/ftrace.h> +#include <linux/module.h> +#include <asm-generic/io.h> + +#define CREATE_TRACE_POINTS +#include <trace/events/rwmmio.h> + +#ifdef CONFIG_TRACE_MMIO_ACCESS +void log_write_mmio(u64 val, u8 width, volatile void __iomem *addr, + unsigned long caller_addr) +{ + trace_rwmmio_write(caller_addr, val, width, addr); +} +EXPORT_SYMBOL_GPL(log_write_mmio); +EXPORT_TRACEPOINT_SYMBOL_GPL(rwmmio_write); + +void log_post_write_mmio(u64 val, u8 width, volatile void __iomem *addr, + unsigned long caller_addr) +{ + trace_rwmmio_post_write(caller_addr, val, width, addr); +} +EXPORT_SYMBOL_GPL(log_post_write_mmio); +EXPORT_TRACEPOINT_SYMBOL_GPL(rwmmio_post_write); + +void log_read_mmio(u8 width, const volatile void __iomem *addr, + unsigned long caller_addr) +{ + trace_rwmmio_read(caller_addr, width, addr); +} +EXPORT_SYMBOL_GPL(log_read_mmio); +EXPORT_TRACEPOINT_SYMBOL_GPL(rwmmio_read); + +void log_post_read_mmio(u64 val, u8 width, const volatile void __iomem *addr, + unsigned long caller_addr) +{ + trace_rwmmio_post_read(caller_addr, val, width, addr); +} +EXPORT_SYMBOL_GPL(log_post_read_mmio); +EXPORT_TRACEPOINT_SYMBOL_GPL(rwmmio_post_read); +#endif /* CONFIG_TRACE_MMIO_ACCESS */ |