block: make blktrace use per-cpu buffers for message notes

[firefly-linux-kernel-4.4.55.git] / include / linux / blktrace_api.h

diff --git a/include/linux/blktrace_api.h b/include/linux/blktrace_api.h
index b7cd8f1eedbe423b0ce7faca7fe9979fd91463af..e3ef903aae88224fef2f43fa96b0e0f199baa09b 100644 (file)
--- a/include/linux/blktrace_api.h
+++ b/include/linux/blktrace_api.h
@@ -121,6 +121,7 @@ struct blk_trace {
        int trace_state;
        struct rchan *rchan;
        unsigned long *sequence;
+       unsigned char *msg_data;
        u16 act_mask;
        u64 start_lba;
        u64 end_lba;
@@ -172,7 +173,7 @@ extern void __trace_note_message(struct blk_trace *, const char *fmt, ...);
                if (unlikely(bt))                                       \
                        __trace_note_message(bt, fmt, ##__VA_ARGS__);   \
        } while (0)
-#define BLK_TN_MAX_MSG         1024
+#define BLK_TN_MAX_MSG         128
 
 /**
  * blk_add_trace_rq - Add a trace for a request oriented action