diff options
Diffstat (limited to 'kernel/events/internal.h')
| -rw-r--r-- | kernel/events/internal.h | 25 |
1 files changed, 19 insertions, 6 deletions
diff --git a/kernel/events/internal.h b/kernel/events/internal.h index 05f9f6d626df..486fd78eb8d5 100644 --- a/kernel/events/internal.h +++ b/kernel/events/internal.h @@ -123,21 +123,19 @@ static inline unsigned long perf_aux_size(struct ring_buffer *rb) return rb->aux_nr_pages << PAGE_SHIFT; } -#define DEFINE_OUTPUT_COPY(func_name, memcpy_func) \ -static inline unsigned long \ -func_name(struct perf_output_handle *handle, \ - const void *buf, unsigned long len) \ +#define __DEFINE_OUTPUT_COPY_BODY(advance_buf, memcpy_func, ...) \ { \ unsigned long size, written; \ \ do { \ size = min(handle->size, len); \ - written = memcpy_func(handle->addr, buf, size); \ + written = memcpy_func(__VA_ARGS__); \ written = size - written; \ \ len -= written; \ handle->addr += written; \ - buf += written; \ + if (advance_buf) \ + buf += written; \ handle->size -= written; \ if (!handle->size) { \ struct ring_buffer *rb = handle->rb; \ @@ -152,6 +150,21 @@ func_name(struct perf_output_handle *handle, \ return len; \ } +#define DEFINE_OUTPUT_COPY(func_name, memcpy_func) \ +static inline unsigned long \ +func_name(struct perf_output_handle *handle, \ + const void *buf, unsigned long len) \ +__DEFINE_OUTPUT_COPY_BODY(true, memcpy_func, handle->addr, buf, size) + +static inline unsigned long +__output_custom(struct perf_output_handle *handle, perf_copy_f copy_func, + const void *buf, unsigned long len) +{ + unsigned long orig_len = len; + __DEFINE_OUTPUT_COPY_BODY(false, copy_func, handle->addr, buf, + orig_len - len, size) +} + static inline unsigned long memcpy_common(void *dst, const void *src, unsigned long n) { |