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cam_iosched: use tunable flag and make a bool really a bool

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kern.cam.do_dynamic_iosched is really a bool, so change its type to
bool. While I'm here, also use the CTLFLAG_TUN flag instead of a
separate tunable line for it and kern.cam.iosched_alpha_bits.

MFC After:		1 week
Sponsored by:		Netflix
This commit is contained in:
Warner Losh 2021-07-13 00:00:33 -06:00
parent 431ddd9436
commit a065ccb280
1 changed files with 3 additions and 5 deletions
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8
sys/cam/cam_iosched.c
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@ -70,9 +70,8 @@ static MALLOC_DEFINE(M_CAMSCHED, "CAM I/O Scheduler",
#ifdef CAM_IOSCHED_DYNAMIC
static int do_dynamic_iosched = 1;
TUNABLE_INT("kern.cam.do_dynamic_iosched", &do_dynamic_iosched);
SYSCTL_INT(_kern_cam, OID_AUTO, do_dynamic_iosched, CTLFLAG_RD,
static bool do_dynamic_iosched = 1;
SYSCTL_BOOL(_kern_cam, OID_AUTO, do_dynamic_iosched, CTLFLAG_RD | CTLFLAG_TUN,
&do_dynamic_iosched, 1,
"Enable Dynamic I/O scheduler optimizations.");
@ -97,8 +96,7 @@ SYSCTL_INT(_kern_cam, OID_AUTO, do_dynamic_iosched, CTLFLAG_RD,
* Note: See computation of EMA and EMVAR for acceptable ranges of alpha.
*/
static int alpha_bits = 9;
TUNABLE_INT("kern.cam.iosched_alpha_bits", &alpha_bits);
SYSCTL_INT(_kern_cam, OID_AUTO, iosched_alpha_bits, CTLFLAG_RW,
SYSCTL_INT(_kern_cam, OID_AUTO, iosched_alpha_bits, CTLFLAG_RW | CTLFLAG_TUN,
&alpha_bits, 1,
"Bits in EMA's alpha.");