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| author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2017-11-13 17:10:13 -0800 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2017-11-13 17:10:13 -0800 |
| commit | c25141062a82ae8bddced1b3ce2b57a1c0efabe0 (patch) | |
| tree | 105edf10059bc0c4f2f00338b0c861b813d1bb1a /include/linux/blktrace_api.h | |
| parent | 26dd633e437dca218547ccbeacc71fe8a620b6f6 (diff) | |
| parent | c1b433e04ef9c0a1c4d65bfe918472ffa334dff4 (diff) | |
| download | lwn-c25141062a82ae8bddced1b3ce2b57a1c0efabe0.tar.gz lwn-c25141062a82ae8bddced1b3ce2b57a1c0efabe0.zip | |
Merge branch 'next' into for-linus
Prepare input updates for 4.15 merge window.
Diffstat (limited to 'include/linux/blktrace_api.h')
| -rw-r--r-- | include/linux/blktrace_api.h | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/include/linux/blktrace_api.h b/include/linux/blktrace_api.h index d2e908586e3d..8804753805ac 100644 --- a/include/linux/blktrace_api.h +++ b/include/linux/blktrace_api.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ #ifndef BLKTRACE_H #define BLKTRACE_H @@ -28,10 +29,12 @@ struct blk_trace { atomic_t dropped; }; +struct blkcg; + extern int blk_trace_ioctl(struct block_device *, unsigned, char __user *); extern void blk_trace_shutdown(struct request_queue *); -extern __printf(2, 3) -void __trace_note_message(struct blk_trace *, const char *fmt, ...); +extern __printf(3, 4) +void __trace_note_message(struct blk_trace *, struct blkcg *blkcg, const char *fmt, ...); /** * blk_add_trace_msg - Add a (simple) message to the blktrace stream @@ -46,12 +49,14 @@ void __trace_note_message(struct blk_trace *, const char *fmt, ...); * NOTE: Can not use 'static inline' due to presence of var args... * **/ -#define blk_add_trace_msg(q, fmt, ...) \ +#define blk_add_cgroup_trace_msg(q, cg, fmt, ...) \ do { \ struct blk_trace *bt = (q)->blk_trace; \ if (unlikely(bt)) \ - __trace_note_message(bt, fmt, ##__VA_ARGS__); \ + __trace_note_message(bt, cg, fmt, ##__VA_ARGS__);\ } while (0) +#define blk_add_trace_msg(q, fmt, ...) \ + blk_add_cgroup_trace_msg(q, NULL, fmt, ##__VA_ARGS__) #define BLK_TN_MAX_MSG 128 static inline bool blk_trace_note_message_enabled(struct request_queue *q) @@ -82,6 +87,7 @@ extern struct attribute_group blk_trace_attr_group; # define blk_trace_startstop(q, start) (-ENOTTY) # define blk_trace_remove(q) (-ENOTTY) # define blk_add_trace_msg(q, fmt, ...) do { } while (0) +# define blk_add_cgroup_trace_msg(q, cg, fmt, ...) do { } while (0) # define blk_trace_remove_sysfs(dev) do { } while (0) # define blk_trace_note_message_enabled(q) (false) static inline int blk_trace_init_sysfs(struct device *dev) |