diff options
| -rw-r--r-- | include/trace/events/cma.h | 66 | ||||
| -rw-r--r-- | mm/cma.c | 5 |
2 files changed, 71 insertions, 0 deletions
diff --git a/include/trace/events/cma.h b/include/trace/events/cma.h new file mode 100644 index 0000000..d7cd961 --- /dev/null +++ b/include/trace/events/cma.h @@ -0,0 +1,66 @@ +#undef TRACE_SYSTEM +#define TRACE_SYSTEM cma + +#if !defined(_TRACE_CMA_H) || defined(TRACE_HEADER_MULTI_READ) +#define _TRACE_CMA_H + +#include <linux/types.h> +#include <linux/tracepoint.h> + +TRACE_EVENT(cma_alloc, + + TP_PROTO(unsigned long pfn, const struct page *page, + unsigned int count, unsigned int align), + + TP_ARGS(pfn, page, count, align), + + TP_STRUCT__entry( + __field(unsigned long, pfn) + __field(const struct page *, page) + __field(unsigned int, count) + __field(unsigned int, align) + ), + + TP_fast_assign( + __entry->pfn = pfn; + __entry->page = page; + __entry->count = count; + __entry->align = align; + ), + + TP_printk("pfn=%lx page=%p count=%u align=%u", + __entry->pfn, + __entry->page, + __entry->count, + __entry->align) +); + +TRACE_EVENT(cma_release, + + TP_PROTO(unsigned long pfn, const struct page *page, + unsigned int count), + + TP_ARGS(pfn, page, count), + + TP_STRUCT__entry( + __field(unsigned long, pfn) + __field(const struct page *, page) + __field(unsigned int, count) + ), + + TP_fast_assign( + __entry->pfn = pfn; + __entry->page = page; + __entry->count = count; + ), + + TP_printk("pfn=%lx page=%p count=%u", + __entry->pfn, + __entry->page, + __entry->count) +); + +#endif /* _TRACE_CMA_H */ + +/* This part must be outside protection */ +#include <trace/define_trace.h> @@ -23,6 +23,7 @@ # define DEBUG #endif #endif +#define CREATE_TRACE_POINTS #include <linux/memblock.h> #include <linux/err.h> @@ -34,6 +35,7 @@ #include <linux/cma.h> #include <linux/highmem.h> #include <linux/io.h> +#include <trace/events/cma.h> #include "cma.h" @@ -414,6 +416,8 @@ struct page *cma_alloc(struct cma *cma, unsigned int count, unsigned int align) start = bitmap_no + mask + 1; } + trace_cma_alloc(page ? pfn : -1UL, page, count, align); + pr_debug("%s(): returned %p\n", __func__, page); return page; } @@ -446,6 +450,7 @@ bool cma_release(struct cma *cma, const struct page *pages, unsigned int count) free_contig_range(pfn, count); cma_clear_bitmap(cma, pfn, count); + trace_cma_release(pfn, pages, count); return true; } |