From: Peter Zijlstra <peterz@infradead.org>
To: mingo@kernel.org, will@kernel.org, tglx@linutronix.de
Cc: x86@kernel.org, linux-kernel@vger.kernel.org,
a.darwish@linutronix.de, rostedt@goodmis.org,
bigeasy@linutronix.de
Subject: Re: [PATCH 2/6] lockdep: Change hardirq{s_enabled,_context} to per-cpu variables
Date: Wed, 27 May 2020 19:39:18 +0200 [thread overview]
Message-ID: <20200527173918.GD706495@hirez.programming.kicks-ass.net> (raw)
In-Reply-To: <20200527155003.202732880@infradead.org>
On Wed, May 27, 2020 at 05:45:29PM +0200, Peter Zijlstra wrote:
> -do { \
> - if (!current->hardirq_context++) \
> - current->hardirq_threaded = 0; \
> +# define lockdep_hardirq_enter() \
> +do { \
> + if (!this_cpu_inc_return(hardirq_context)) \
this_cpu_inc_return(hardirq_context) == 1
or this_cpu_fetch_inc(), which we don't have.
> + current->hardirq_threaded = 0; \
next prev parent reply other threads:[~2020-05-27 17:39 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-27 15:45 [PATCH 0/6] x86/entry,lockdep: Improve IRQ state tracking Peter Zijlstra
2020-05-27 15:45 ` [PATCH 1/6] x86/entry: Clarify irq_{enter,exit}_rcu() Peter Zijlstra
2020-05-27 15:45 ` [PATCH 2/6] lockdep: Change hardirq{s_enabled,_context} to per-cpu variables Peter Zijlstra
2020-05-27 17:39 ` Peter Zijlstra [this message]
2020-05-27 15:45 ` [PATCH 3/6] lockdep: Remove lockdep_hardirq{s_enabled,_context}() argument Peter Zijlstra
2020-05-27 15:45 ` [PATCH 4/6] x86/entry: Rename trace_hardirqs_off_prepare() Peter Zijlstra
2020-05-27 15:45 ` [PATCH 5/6] lockdep: Prepare for NMI IRQ state tracking Peter Zijlstra
2020-05-27 15:45 ` [PATCH 6/6] x86/entry: Fix NMI vs " Peter Zijlstra
2020-05-27 16:43 ` [PATCH 0/6] x86/entry,lockdep: Improve " Peter Zijlstra
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