Skip to main content

Browse the archive

Revision 90f59ee41abf587ad4675a70434136c8707fdf4b authored by Daniel Bristot de Oliveira on 18 February 2022, 17:57:09 UTC, committed by Steven Rostedt (Google) on 26 February 2022, 02:05:30 UTC 
rtla/osnoise: Fix error message when failing to enable trace instance
 
When a trace instance creation fails, tools are printing:

	Could not enable -> osnoiser <- tracer for tracing

Print the actual (and correct) name of the tracer it fails to enable.

Link: https://lkml.kernel.org/r/53ef0582605af91eca14b19dba9fc9febb95d4f9.1645206561.git.bristot@kernel.org

Fixes: b1696371d865 ("rtla: Helper functions for rtla")
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
1 parent 316f710
Raw File
blk-mq-debugfs.h 
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef INT_BLK_MQ_DEBUGFS_H
#define INT_BLK_MQ_DEBUGFS_H

#ifdef CONFIG_BLK_DEBUG_FS

#include <linux/seq_file.h>

struct blk_mq_debugfs_attr {
	const char *name;
	umode_t mode;
	int (*show)(void *, struct seq_file *);
	ssize_t (*write)(void *, const char __user *, size_t, loff_t *);
	/* Set either .show or .seq_ops. */
	const struct seq_operations *seq_ops;
};

int __blk_mq_debugfs_rq_show(struct seq_file *m, struct request *rq);
int blk_mq_debugfs_rq_show(struct seq_file *m, void *v);

void blk_mq_debugfs_register(struct request_queue *q);
void blk_mq_debugfs_unregister(struct request_queue *q);
void blk_mq_debugfs_register_hctx(struct request_queue *q,
				  struct blk_mq_hw_ctx *hctx);
void blk_mq_debugfs_unregister_hctx(struct blk_mq_hw_ctx *hctx);
void blk_mq_debugfs_register_hctxs(struct request_queue *q);
void blk_mq_debugfs_unregister_hctxs(struct request_queue *q);

void blk_mq_debugfs_register_sched(struct request_queue *q);
void blk_mq_debugfs_unregister_sched(struct request_queue *q);
void blk_mq_debugfs_register_sched_hctx(struct request_queue *q,
				       struct blk_mq_hw_ctx *hctx);
void blk_mq_debugfs_unregister_sched_hctx(struct blk_mq_hw_ctx *hctx);

void blk_mq_debugfs_register_rqos(struct rq_qos *rqos);
void blk_mq_debugfs_unregister_rqos(struct rq_qos *rqos);
void blk_mq_debugfs_unregister_queue_rqos(struct request_queue *q);
#else
static inline void blk_mq_debugfs_register(struct request_queue *q)
{
}

static inline void blk_mq_debugfs_unregister(struct request_queue *q)
{
}

static inline void blk_mq_debugfs_register_hctx(struct request_queue *q,
						struct blk_mq_hw_ctx *hctx)
{
}

static inline void blk_mq_debugfs_unregister_hctx(struct blk_mq_hw_ctx *hctx)
{
}

static inline void blk_mq_debugfs_register_hctxs(struct request_queue *q)
{
}

static inline void blk_mq_debugfs_unregister_hctxs(struct request_queue *q)
{
}

static inline void blk_mq_debugfs_register_sched(struct request_queue *q)
{
}

static inline void blk_mq_debugfs_unregister_sched(struct request_queue *q)
{
}

static inline void blk_mq_debugfs_register_sched_hctx(struct request_queue *q,
						      struct blk_mq_hw_ctx *hctx)
{
}

static inline void blk_mq_debugfs_unregister_sched_hctx(struct blk_mq_hw_ctx *hctx)
{
}

static inline void blk_mq_debugfs_register_rqos(struct rq_qos *rqos)
{
}

static inline void blk_mq_debugfs_unregister_rqos(struct rq_qos *rqos)
{
}

static inline void blk_mq_debugfs_unregister_queue_rqos(struct request_queue *q)
{
}
#endif

#ifdef CONFIG_BLK_DEBUG_FS_ZONED
int queue_zone_wlock_show(void *data, struct seq_file *m);
#else
static inline int queue_zone_wlock_show(void *data, struct seq_file *m)
{
	return 0;
}
#endif

#endif
back to top