Adds a new type of action 'drv_data' for blktrace to handle binary
driver-specific data. Since the data is binary, blkparse will only put it in
a binary file, not in the regular human-readable output.
Signed-off-by: Stefan Raspl <raspl@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Martin Peschke <mp3@xxxxxxxxxx>
---
act_mask.c | 1 +
blkparse.c | 3 +++
blktrace_api.h | 5 ++++-
3 files changed, 8 insertions(+), 1 deletion(-)
--- a/act_mask.c
+++ b/act_mask.c
@@ -25,6 +25,7 @@ static struct mask_map mask_maps[] = {
DECLARE_MASK_MAP(PC),
DECLARE_MASK_MAP(AHEAD),
DECLARE_MASK_MAP(META),
+ DECLARE_MASK_MAP(DRV_DATA),
};
int find_mask_map(char *string)
--- a/blktrace_api.h
+++ b/blktrace_api.h
@@ -7,7 +7,7 @@
* Trace categories
*/
enum {
- BLK_TC_READ = 1 << 0, /* reads */
+ BLK_TC_READ = 1 << 0, /* reads */
BLK_TC_WRITE = 1 << 1, /* writes */
BLK_TC_BARRIER = 1 << 2, /* barrier */
BLK_TC_SYNC = 1 << 3, /* sync */
@@ -20,6 +20,7 @@ enum {
BLK_TC_NOTIFY = 1 << 10, /* special message */
BLK_TC_AHEAD = 1 << 11, /* readahead */
BLK_TC_META = 1 << 12, /* metadata */
+ BLK_TC_DRV_DATA = 1 << 13, /* binary driver data */
BLK_TC_END = 1 << 15, /* only 16-bits, reminder */
};
@@ -46,6 +47,7 @@ enum {
__BLK_TA_SPLIT, /* bio was split */
__BLK_TA_BOUNCE, /* bio was bounced */
__BLK_TA_REMAP, /* bio was remapped */
+ __BLK_TA_DRV_DATA, /* binary driver data */
};
/*
@@ -75,6 +77,7 @@ enum blktrace_notify {
#define BLK_TA_SPLIT (__BLK_TA_SPLIT)
#define BLK_TA_BOUNCE (__BLK_TA_BOUNCE)
#define BLK_TA_REMAP (__BLK_TA_REMAP | BLK_TC_ACT(BLK_TC_QUEUE))
+#define BLK_TA_DRV_DATA (__BLK_TA_DRV_DATA | BLK_TC_ACT(BLK_TC_DRV_DATA))
#define BLK_TN_PROCESS (__BLK_TN_PROCESS | BLK_TC_ACT(BLK_TC_NOTIFY))
#define BLK_TN_TIMESTAMP (__BLK_TN_TIMESTAMP | BLK_TC_ACT(BLK_TC_NOTIFY))
--- a/blkparse.c
+++ b/blkparse.c
@@ -1583,6 +1583,9 @@ static void dump_trace_fs(struct blk_io_
case __BLK_TA_REMAP:
log_generic(pci, t, "A");
break;
+ case __BLK_TA_DRV_DATA:
+ // dump to binary file only
+ break;
default:
fprintf(stderr, "Bad fs action %x\n", t->action);
break;
--
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