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FreeBSD: Improve taskq wrapper

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- Group tqent_task and tqent_timeout_task into a union.  They are
never used same time. This shrinks taskq_ent_t from 192 to 160 bytes.
 - Remove tqent_registered.  Use tqent_id != 0 instead.
 - Remove tqent_cancelled.  Use taskqueue pending counter instead.
 - Change tqent_type into uint_t.  We don't need to pack it any more.
 - Change tqent_rc into uint_t, matching refcount(9).
 - Take shared locks in taskq_lookup().
 - Call proper taskqueue_drain_timeout() for TIMEOUT_TASK in
taskq_cancel_id() and taskq_wait_id().
 - Switch from CK_LIST to regular LIST.

Reviewed-by: Allan Jude <allan@klarasystems.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Mateusz Guzik <mjguzik@gmail.com>
Signed-off-by:	Alexander Motin <mav@FreeBSD.org>
Sponsored by:	iXsystems, Inc.
Closes #15356
This commit is contained in:
Alexander Motin
2023-10-13 13:41:11 -04:00
committed by GitHub
parent 8a74070128
commit 380c25f640
2 changed files with 46 additions and 46 deletions
Download Patch File Download Diff File Expand all files Collapse all files
include/os/freebsd/spl/sys/taskq.h
+9 -9
View File
@@ -30,9 +30,9 @@
#include <sys/types.h>
#include <sys/proc.h>
#include <sys/queue.h>
#include <sys/taskqueue.h>
#include <sys/thread.h>
#include <sys/ck.h>
#ifdef __cplusplus
extern "C" {
@@ -48,16 +48,16 @@ typedef uintptr_t taskqid_t;
typedef void (task_func_t)(void *);
typedef struct taskq_ent {
struct task tqent_task;
struct timeout_task tqent_timeout_task;
union {
struct task tqent_task;
struct timeout_task tqent_timeout_task;
};
task_func_t *tqent_func;
void *tqent_arg;
taskqid_t tqent_id;
CK_LIST_ENTRY(taskq_ent) tqent_hash;
uint8_t tqent_type;
uint8_t tqent_registered;
uint8_t tqent_cancelled;
volatile uint32_t tqent_rc;
taskqid_t tqent_id;
LIST_ENTRY(taskq_ent) tqent_hash;
uint_t tqent_type;
volatile uint_t tqent_rc;
} taskq_ent_t;
/*