From: Steven Rostedt <rostedt@goodmis.org>
To: Kirill Tkhai <ktkhai@virtuozzo.com>
Cc: Peter Zijlstra <peterz@infradead.org>,
mingo@redhat.com, juri.lelli@redhat.com,
vincent.guittot@linaro.org, dietmar.eggemann@arm.com,
bsegall@google.com, mgorman@suse.de,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2] sched: Micro optimization in pick_next_task() and in check_preempt_curr()
Date: Thu, 19 Dec 2019 11:05:17 -0500 [thread overview]
Message-ID: <20191219110517.0dbdb211@gandalf.local.home> (raw)
In-Reply-To: <44c95c18-7593-f3e7-f710-a7d424af7442@virtuozzo.com>
On Thu, 19 Dec 2019 18:20:58 +0300
Kirill Tkhai <ktkhai@virtuozzo.com> wrote:
> diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
> index e00f41aa8ec4..ff12a422ff19 100644
> --- a/include/asm-generic/vmlinux.lds.h
> +++ b/include/asm-generic/vmlinux.lds.h
> @@ -108,6 +108,13 @@
> #define SBSS_MAIN .sbss
> #endif
I would also add a comment here:
/*
* The order of the sched class addresses are important, as they are
* used to determine the order of the priority of each sched class in
* relation to each other.
*/
>
> +#define SCHED_DATA \
> + *(__idle_sched_class) \
> + *(__fair_sched_class) \
> + *(__rt_sched_class) \
> + *(__dl_sched_class) \
> + *(__stop_sched_class)
> +
> /*
> * Align to a 32 byte boundary equal to the
> * alignment gcc 4.5 uses for a struct
> @@ -308,6 +315,7 @@
> #define DATA_DATA \
> *(.xiptext) \
> *(DATA_MAIN) \
> + SCHED_DATA \
> *(.ref.data) \
> *(.data..shared_aligned) /* percpu related */ \
> MEM_KEEP(init.data*) \
next prev parent reply other threads:[~2019-12-19 16:05 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-19 12:39 [PATCH RFC] sched: Micro optimization in pick_next_task() and in check_preempt_curr() Kirill Tkhai
2019-12-19 13:12 ` Peter Zijlstra
2019-12-19 14:02 ` Peter Zijlstra
2019-12-19 14:25 ` Kirill Tkhai
2019-12-19 14:31 ` Kirill Tkhai
2019-12-19 14:43 ` Steven Rostedt
2019-12-19 14:46 ` Kirill Tkhai
2019-12-19 14:59 ` Steven Rostedt
2019-12-19 15:20 ` [PATCH v2] " Kirill Tkhai
2019-12-19 15:40 ` Steven Rostedt
2019-12-19 16:08 ` Kirill Tkhai
2019-12-19 16:22 ` Steven Rostedt
2019-12-19 20:16 ` Kirill Tkhai
2019-12-19 20:20 ` Steven Rostedt
2019-12-19 16:05 ` Steven Rostedt [this message]
2019-12-19 14:04 ` [Q] ld: Does LTO reorder ro variables in two files? Kirill Tkhai
2019-12-19 15:21 ` Jeff Law
2019-12-19 15:30 ` Kirill Tkhai
2019-12-19 15:45 ` Alexander Monakov
2019-12-19 16:08 ` Kirill Tkhai
2019-12-19 13:50 ` [PATCH RFC] sched: Micro optimization in pick_next_task() and in check_preempt_curr() Steven Rostedt
2019-12-19 13:53 ` Kirill Tkhai
2019-12-19 13:53 ` Peter Zijlstra
2020-06-25 11:53 ` [tip: sched/core] sched: Force the address order of each sched class descriptor tip-bot2 for Steven Rostedt (VMware)
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