* [RFC PATCH 06/39] blktrace: add act and prio check helpers
@ 2020-11-05 2:40 Chaitanya Kulkarni
0 siblings, 0 replies; 2+ messages in thread
From: Chaitanya Kulkarni @ 2020-11-05 2:40 UTC (permalink / raw)
To: linux-btrace
Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
---
kernel/trace/blktrace.c | 37 +++++++++++++++++++++++++++++++++++++
1 file changed, 37 insertions(+)
diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c
index 96c11bda8eef..12ba2b170f02 100644
--- a/kernel/trace/blktrace.c
+++ b/kernel/trace/blktrace.c
@@ -311,6 +311,43 @@ static int act_log_check(struct blk_trace *bt, u32 what, sector_t sector,
return 0;
}
+static inline bool prio_log_check(struct blk_trace_ext *bt, u32 ioprio)
+{
+ bool ret;
+
+ switch (IOPRIO_PRIO_CLASS(ioprio)) {
+ case IOPRIO_CLASS_NONE:
+ ret = (bt->prio_mask & 0x01) ? true : false;
+ break;
+ case IOPRIO_CLASS_RT:
+ ret = (bt->prio_mask & 0x02) ? true : false;
+ break;
+ case IOPRIO_CLASS_BE:
+ ret = (bt->prio_mask & 0x04) ? true : false;
+ break;
+ case IOPRIO_CLASS_IDLE:
+ ret = (bt->prio_mask & 0x08) ? true : false;
+ break;
+ default:
+ /*XXX: print rate limit warn here */
+ ret = false;
+ }
+ return ret;
+}
+
+static inline int act_log_check_ext(struct blk_trace_ext *bt, u64 what,
+ sector_t sector, pid_t pid)
+{
+ if (((bt->act_mask << BLK_TC_SHIFT_EXT) & what) = 0)
+ return 1;
+ if (sector && (sector < bt->start_lba || sector > bt->end_lba))
+ return 1;
+ if (bt->pid && pid != bt->pid)
+ return 1;
+
+ return 0;
+}
+
/*
* Data direction bit lookup
*/
--
2.22.1
^ permalink raw reply related [flat|nested] 2+ messages in thread
* [RFC PATCH 06/39] blktrace: add act and prio check helpers
@ 2020-08-25 22:09 Chaitanya Kulkarni
0 siblings, 0 replies; 2+ messages in thread
From: Chaitanya Kulkarni @ 2020-08-25 22:09 UTC (permalink / raw)
To: linux-btrace
Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
---
kernel/trace/blktrace.c | 37 +++++++++++++++++++++++++++++++++++++
1 file changed, 37 insertions(+)
diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c
index f739a1b73a47..a2270818e29c 100644
--- a/kernel/trace/blktrace.c
+++ b/kernel/trace/blktrace.c
@@ -311,6 +311,43 @@ static int act_log_check(struct blk_trace *bt, u32 what, sector_t sector,
return 0;
}
+static inline bool prio_log_check(struct blk_trace_ext *bt, u32 ioprio)
+{
+ bool ret;
+
+ switch (IOPRIO_PRIO_CLASS(ioprio)) {
+ case IOPRIO_CLASS_NONE:
+ ret = (bt->prio_mask & 0x01) ? true : false;
+ break;
+ case IOPRIO_CLASS_RT:
+ ret = (bt->prio_mask & 0x02) ? true : false;
+ break;
+ case IOPRIO_CLASS_BE:
+ ret = (bt->prio_mask & 0x04) ? true : false;
+ break;
+ case IOPRIO_CLASS_IDLE:
+ ret = (bt->prio_mask & 0x08) ? true : false;
+ break;
+ default:
+ /*XXX: print rate limit warn here */
+ ret = false;
+ }
+ return ret;
+}
+
+static inline int act_log_check_ext(struct blk_trace_ext *bt, u64 what,
+ sector_t sector, pid_t pid)
+{
+ if (((bt->act_mask << BLK_TC_SHIFT_EXT) & what) = 0)
+ return 1;
+ if (sector && (sector < bt->start_lba || sector > bt->end_lba))
+ return 1;
+ if (bt->pid && pid != bt->pid)
+ return 1;
+
+ return 0;
+}
+
/*
* Data direction bit lookup
*/
--
2.22.1
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