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ANDROID: vendor_hooks: add vendor hook in blk_mq_alloc_rqs()

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This vendor hook let us attach oem data as payload to the request.
The payload is used by oem driver for debugging purpose.

Bug: 188749221
Change-Id: Iac598bd9cce836dac0efe9198a3e7752928f351a
Signed-off-by: Yang Yang <yang.yang@vivo.com>
(cherry picked from commit eecc725a8e)
This commit is contained in:
Yang Yang
2022-06-01 15:15:12 +08:00
committed by Todd Kjos
parent c249ab0433
commit 1c6391dd7a
3 changed files with 29 additions and 0 deletions
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3
block/blk-mq.c
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@@ -41,6 +41,8 @@
#include "blk-mq-sched.h"
#include "blk-rq-qos.h"
#include <trace/hooks/block.h>
static DEFINE_PER_CPU(struct llist_head, blk_cpu_done);
static void blk_mq_poll_stats_start(struct request_queue *q);
@@ -2459,6 +2461,7 @@ int blk_mq_alloc_rqs(struct blk_mq_tag_set *set, struct blk_mq_tags *tags,
*/
rq_size = round_up(sizeof(struct request) + set->cmd_size,
cache_line_size());
trace_android_vh_blk_alloc_rqs(&rq_size, set, tags);
left = rq_size * depth;
for (i = 0; i < depth; ) {

2
drivers/android/vendor_hooks.c
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@@ -29,6 +29,7 @@
#include <trace/hooks/preemptirq.h>
#include <trace/hooks/ftrace_dump.h>
#include <trace/hooks/ufshcd.h>
#include <trace/hooks/block.h>
#include <trace/hooks/cgroup.h>
#include <trace/hooks/sys.h>
#include <trace/hooks/iommu.h>
@@ -301,3 +302,4 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_force_compatible_post);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_regmap_update);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_dma_buf_release);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_mmc_check_status);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_blk_alloc_rqs);

24
include/trace/hooks/block.h Normal file
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@@ -0,0 +1,24 @@
/* SPDX-License-Identifier: GPL-2.0 */
#undef TRACE_SYSTEM
#define TRACE_SYSTEM block
#define TRACE_INCLUDE_PATH trace/hooks
#if !defined(_TRACE_HOOK_BLOCK_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_HOOK_BLOCK_H
#include <linux/tracepoint.h>
#include <trace/hooks/vendor_hooks.h>
struct blk_mq_tag_set;
struct blk_mq_tags;
DECLARE_HOOK(android_vh_blk_alloc_rqs,
TP_PROTO(size_t *rq_size, struct blk_mq_tag_set *set,
struct blk_mq_tags *tags),
TP_ARGS(rq_size, set, tags));
#endif /* _TRACE_HOOK_BLOCK_H */
/* This part must be outside protection */
#include <trace/define_trace.h>