diff options
Diffstat (limited to '0021-ZEN-INTERACTIVE-Use-BFQ-as-our-elevator.patch')
| -rw-r--r-- | 0021-ZEN-INTERACTIVE-Use-BFQ-as-our-elevator.patch | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/0021-ZEN-INTERACTIVE-Use-BFQ-as-our-elevator.patch b/0021-ZEN-INTERACTIVE-Use-BFQ-as-our-elevator.patch new file mode 100644 index 000000000000..73e2d4d97fac --- /dev/null +++ b/0021-ZEN-INTERACTIVE-Use-BFQ-as-our-elevator.patch @@ -0,0 +1,51 @@ +From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 +From: "Jan Alexander Steffens (heftig)" <jan.steffens@gmail.com> +Date: Mon, 27 Jan 2020 18:11:05 +0100 +Subject: [PATCH] ZEN: INTERACTIVE: Use BFQ as our elevator + +Add a scheduler even to multi-queue block devices: We prefer +interactivity to throughput and want BFQ if possible. +--- + block/elevator.c | 6 +++++- + init/Kconfig | 4 ++++ + 2 files changed, 9 insertions(+), 1 deletion(-) + +diff --git a/block/elevator.c b/block/elevator.c +index b18f38f7e88a..a3e85e2f4d96 100644 +--- a/block/elevator.c ++++ b/block/elevator.c +@@ -638,11 +638,15 @@ static struct elevator_type *elevator_get_default(struct request_queue *q) + if (q->tag_set && q->tag_set->flags & BLK_MQ_F_NO_SCHED_BY_DEFAULT) + return NULL; + ++#ifndef CONFIG_ZEN_INTERACTIVE + if (q->nr_hw_queues != 1 && + !blk_mq_is_shared_tags(q->tag_set->flags)) + return NULL; ++#endif + +-#if defined(CONFIG_MQ_IOSCHED_DEADLINE_NODEFAULT) ++#if defined(CONFIG_ZEN_INTERACTIVE) && defined(CONFIG_IOSCHED_BFQ) ++ return elevator_get(q, "bfq", false); ++#elif defined(CONFIG_MQ_IOSCHED_DEADLINE_NODEFAULT) + return elevator_get(q, "mq-deadline-nodefault", false); + #else + return elevator_get(q, "mq-deadline", false); +diff --git a/init/Kconfig b/init/Kconfig +index 344ca4b9f15a..450355b8aa2a 100644 +--- a/init/Kconfig ++++ b/init/Kconfig +@@ -113,6 +113,10 @@ config ZEN_INTERACTIVE + help + Tunes the kernel for responsiveness at the cost of throughput and power usage. + ++ --- Block Layer ---------------------------------------- ++ ++ Default scheduler.........: mq-deadline -> bfq ++ + config BROKEN + bool + +-- +2.35.1 + |