Re: [PATCH v4 02/27] hardirq/nmi: Allow nested nmi_enter()

[PATCH v4 00/27] tracing vs world · Peter Zijlstra <peterz@infradead.org> · 2020-02-21
[PATCH v4 05/27] x86: Replace ist_enter() with nmi_enter() · Peter Zijlstra <peterz@infradead.org> · 2020-02-21
Re: [PATCH v4 05/27] x86: Replace ist_enter() with nmi_enter() · Andy Lutomirski <luto@kernel.org> · 2020-02-21
Re: [PATCH v4 05/27] x86: Replace ist_enter() with nmi_enter() · Peter Zijlstra <peterz@infradead.org> · 2020-02-21
Re: [PATCH v4 05/27] x86: Replace ist_enter() with nmi_enter() · Peter Zijlstra <peterz@infradead.org> · 2020-02-24
Re: [PATCH v4 05/27] x86: Replace ist_enter() with nmi_enter() · Steven Rostedt <rostedt@goodmis.org> · 2020-02-24
Re: [PATCH v4 05/27] x86: Replace ist_enter() with nmi_enter() · Peter Zijlstra <peterz@infradead.org> · 2020-02-24
Re: [PATCH v4 05/27] x86: Replace ist_enter() with nmi_enter() · Steven Rostedt <rostedt@goodmis.org> · 2020-02-24
Re: [PATCH v4 05/27] x86: Replace ist_enter() with nmi_enter() · Peter Zijlstra <peterz@infradead.org> · 2020-02-24
Re: [PATCH v4 05/27] x86: Replace ist_enter() with nmi_enter() · Steven Rostedt <rostedt@goodmis.org> · 2020-02-24
Re: [PATCH v4 05/27] x86: Replace ist_enter() with nmi_enter() · Peter Zijlstra <peterz@infradead.org> · 2020-02-26
Re: [PATCH v4 05/27] x86: Replace ist_enter() with nmi_enter() · Peter Zijlstra <peterz@infradead.org> · 2020-02-26
Re: [PATCH v4 05/27] x86: Replace ist_enter() with nmi_enter() · Peter Zijlstra <peterz@infradead.org> · 2020-02-26
Re: [PATCH v4 05/27] x86: Replace ist_enter() with nmi_enter() · Steven Rostedt <rostedt@goodmis.org> · 2020-02-26
Re: [PATCH v4 05/27] x86: Replace ist_enter() with nmi_enter() · Masami Hiramatsu <mhiramat@kernel.org> · 2020-03-07
[PATCH v4 26/27] x86/int3: Inline bsearch() · Peter Zijlstra <peterz@infradead.org> · 2020-02-21
[PATCH v4 21/27] asm-generic/atomic: Use __always_inline for fallback wrappers · Peter Zijlstra <peterz@infradead.org> · 2020-02-21
[PATCH v4 23/27] locking/atomics: Flip fallbacks and instrumentation · Peter Zijlstra <peterz@infradead.org> · 2020-02-21
[PATCH v4 18/27] x86/int3: Ensure that poke_int3_handler() is not traced · Peter Zijlstra <peterz@infradead.org> · 2020-02-21
[PATCH v4 03/27] x86/entry: Flip _TIF_SIGPENDING and _TIF_NOTIFY_RESUME handling · Peter Zijlstra <peterz@infradead.org> · 2020-02-21
Re: [PATCH v4 03/27] x86/entry: Flip _TIF_SIGPENDING and _TIF_NOTIFY_RESUME handling · Peter Zijlstra <peterz@infradead.org> · 2020-02-21
[PATCH v4 24/27] x86/int3: Avoid atomic instrumentation · Peter Zijlstra <peterz@infradead.org> · 2020-02-21
[PATCH v4 07/27] rcu: Make RCU IRQ enter/exit functions rely on in_nmi() · Peter Zijlstra <peterz@infradead.org> · 2020-02-21
Re: [PATCH v4 07/27] rcu: Make RCU IRQ enter/exit functions rely on in_nmi() · Frederic Weisbecker <frederic@kernel.org> · 2020-02-26
[PATCH v4 09/27] rcu: Rename rcu_irq_{enter,exit}_irqson() · Peter Zijlstra <peterz@infradead.org> · 2020-02-21
Re: [PATCH v4 09/27] rcu: Rename rcu_irq_{enter,exit}_irqson() · Steven Rostedt <rostedt@goodmis.org> · 2020-02-21
Re: [PATCH v4 09/27] rcu: Rename rcu_irq_{enter,exit}_irqson() · Peter Zijlstra <peterz@infradead.org> · 2020-02-24
Re: [PATCH v4 09/27] rcu: Rename rcu_irq_{enter,exit}_irqson() · Frederic Weisbecker <frederic@kernel.org> · 2020-02-26
[PATCH v4 11/27] rcu,tracing: Create trace_rcu_{enter,exit}() · Peter Zijlstra <peterz@infradead.org> · 2020-02-21
Re: [PATCH v4 11/27] rcu,tracing: Create trace_rcu_{enter,exit}() · Peter Zijlstra <peterz@infradead.org> · 2020-03-06
Re: [PATCH v4 11/27] rcu,tracing: Create trace_rcu_{enter,exit}() · Peter Zijlstra <peterz@infradead.org> · 2020-03-06
[PATCH v4 02/27] hardirq/nmi: Allow nested nmi_enter() · Peter Zijlstra <peterz@infradead.org> · 2020-02-21
Re: [PATCH v4 02/27] hardirq/nmi: Allow nested nmi_enter() · Frederic Weisbecker <frederic@kernel.org> · 2020-02-21
Re: [PATCH v4 02/27] hardirq/nmi: Allow nested nmi_enter() · Petr Mladek <pmladek@suse.com> · 2020-02-24
Re: [PATCH v4 02/27] hardirq/nmi: Allow nested nmi_enter() · Frederic Weisbecker <frederic@kernel.org> · 2020-02-25
Re: [PATCH v4 02/27] hardirq/nmi: Allow nested nmi_enter() · Peter Zijlstra <peterz@infradead.org> · 2020-02-24
Re: [PATCH v4 02/27] hardirq/nmi: Allow nested nmi_enter() · Frederic Weisbecker <frederic@kernel.org> · 2020-02-25
Re: [PATCH v4 02/27] hardirq/nmi: Allow nested nmi_enter() · Peter Zijlstra <peterz@infradead.org> · 2020-02-25
Re: [PATCH v4 02/27] hardirq/nmi: Allow nested nmi_enter() · Frederic Weisbecker <frederic@kernel.org> · 2020-02-25
Re: [PATCH v4 02/27] hardirq/nmi: Allow nested nmi_enter() · Frederic Weisbecker <frederic@kernel.org> · 2020-02-25
Re: [PATCH v4 02/27] hardirq/nmi: Allow nested nmi_enter() · Peter Zijlstra <peterz@infradead.org> · 2020-02-27
Re: [PATCH v4 02/27] hardirq/nmi: Allow nested nmi_enter() · Frederic Weisbecker <frederic@kernel.org> · 2020-02-27
[PATCH v4 17/27] perf,tracing: Allow function tracing when !RCU · Peter Zijlstra <peterz@infradead.org> · 2020-02-21
[PATCH v4 25/27] lib/bsearch: Provide __always_inline variant · Peter Zijlstra <peterz@infradead.org> · 2020-02-21
[PATCH v4 10/27] rcu: Mark rcu_dynticks_curr_cpu_in_eqs() inline · Peter Zijlstra <peterz@infradead.org> · 2020-02-21
[PATCH v4 19/27] locking/atomics, kcsan: Add KCSAN instrumentation · Peter Zijlstra <peterz@infradead.org> · 2020-02-21
[PATCH v4 13/27] x86,tracing: Add comments to do_nmi() · Peter Zijlstra <peterz@infradead.org> · 2020-02-21
[PATCH v4 01/27] lockdep: Teach lockdep about "USED" <- "IN-NMI" inversions · Peter Zijlstra <peterz@infradead.org> · 2020-02-21
Re: [PATCH v4 01/27] lockdep: Teach lockdep about "USED" <- "IN-NMI" inversions · Steven Rostedt <rostedt@goodmis.org> · 2020-02-21
Re: [PATCH v4 01/27] lockdep: Teach lockdep about "USED" <- "IN-NMI" inversions · Peter Zijlstra <peterz@infradead.org> · 2020-02-21
Re: [PATCH v4 01/27] lockdep: Teach lockdep about "USED" <- "IN-NMI" inversions · Steven Rostedt <rostedt@goodmis.org> · 2020-02-21
Re: [PATCH v4 01/27] lockdep: Teach lockdep about "USED" <- "IN-NMI" inversions · Frederic Weisbecker <frederic@kernel.org> · 2020-02-21
Re: [PATCH v4 01/27] lockdep: Teach lockdep about "USED" <- "IN-NMI" inversions · Joel Fernandes <hidden> · 2020-02-22
Re: [PATCH v4 01/27] lockdep: Teach lockdep about "USED" <- "IN-NMI" inversions · Peter Zijlstra <peterz@infradead.org> · 2020-02-24
Re: [PATCH v4 01/27] lockdep: Teach lockdep about "USED" <- "IN-NMI" inversions · Joel Fernandes <hidden> · 2020-02-25
[PATCH v4 06/27] x86/doublefault: Remove memmove() call · Peter Zijlstra <peterz@infradead.org> · 2020-02-21
Re: [PATCH v4 06/27] x86/doublefault: Remove memmove() call · Andy Lutomirski <luto@kernel.org> · 2020-02-21
[PATCH v4 08/27] rcu/kprobes: Comment why rcu_nmi_enter() is marked NOKPROBE · Peter Zijlstra <peterz@infradead.org> · 2020-02-21
Re: [PATCH v4 08/27] rcu/kprobes: Comment why rcu_nmi_enter() is marked NOKPROBE · Frederic Weisbecker <frederic@kernel.org> · 2020-02-26
[PATCH v4 12/27] sched,rcu,tracing: Avoid tracing before in_nmi() is correct · Peter Zijlstra <peterz@infradead.org> · 2020-02-21
[PATCH v4 20/27] asm-generic/atomic: Use __always_inline for pure wrappers · Peter Zijlstra <peterz@infradead.org> · 2020-02-21
[PATCH v4 27/27] x86/int3: Ensure that poke_int3_handler() is not sanitized · Peter Zijlstra <peterz@infradead.org> · 2020-02-21
[PATCH v4 15/27] tracing: Employ trace_rcu_{enter,exit}() · Peter Zijlstra <peterz@infradead.org> · 2020-02-21
[PATCH v4 22/27] compiler: Simple READ/WRITE_ONCE() implementations · Peter Zijlstra <peterz@infradead.org> · 2020-02-21
[PATCH v4 14/27] perf,tracing: Prepare the perf-trace interface for RCU changes · Peter Zijlstra <peterz@infradead.org> · 2020-02-21
[PATCH v4 16/27] tracing: Remove regular RCU context for _rcuidle tracepoints (again) · Peter Zijlstra <peterz@infradead.org> · 2020-02-21
Re: [PATCH v4 16/27] tracing: Remove regular RCU context for _rcuidle tracepoints (again) · Peter Zijlstra <peterz@infradead.org> · 2020-03-06
Re: [PATCH v4 16/27] tracing: Remove regular RCU context for _rcuidle tracepoints (again) · Peter Zijlstra <peterz@infradead.org> · 2020-03-06
Re: [PATCH v4 16/27] tracing: Remove regular RCU context for _rcuidle tracepoints (again) · Alexei Starovoitov <hidden> · 2020-03-06
Re: [PATCH v4 16/27] tracing: Remove regular RCU context for _rcuidle tracepoints (again) · Mathieu Desnoyers <mathieu.desnoyers@efficios.com> · 2020-03-06
Re: [PATCH v4 16/27] tracing: Remove regular RCU context for _rcuidle tracepoints (again) · Steven Rostedt <rostedt@goodmis.org> · 2020-03-06
Re: [PATCH v4 16/27] tracing: Remove regular RCU context for _rcuidle tracepoints (again) · Joel Fernandes <hidden> · 2020-03-06
Re: [PATCH v4 16/27] tracing: Remove regular RCU context for _rcuidle tracepoints (again) · Steven Rostedt <rostedt@goodmis.org> · 2020-03-06
Re: [PATCH v4 16/27] tracing: Remove regular RCU context for _rcuidle tracepoints (again) · Joel Fernandes <hidden> · 2020-03-06
Re: [PATCH v4 16/27] tracing: Remove regular RCU context for _rcuidle tracepoints (again) · Mathieu Desnoyers <mathieu.desnoyers@efficios.com> · 2020-03-06
Re: [PATCH v4 16/27] tracing: Remove regular RCU context for _rcuidle tracepoints (again) · Steven Rostedt <rostedt@goodmis.org> · 2020-03-06
Re: [PATCH v4 16/27] tracing: Remove regular RCU context for _rcuidle tracepoints (again) · Mathieu Desnoyers <mathieu.desnoyers@efficios.com> · 2020-03-06
Re: [PATCH v4 16/27] tracing: Remove regular RCU context for _rcuidle tracepoints (again) · Steven Rostedt <rostedt@goodmis.org> · 2020-03-06
Re: [PATCH v4 16/27] tracing: Remove regular RCU context for _rcuidle tracepoints (again) · Alexei Starovoitov <hidden> · 2020-03-06
Re: [PATCH v4 16/27] tracing: Remove regular RCU context for _rcuidle tracepoints (again) · Joel Fernandes <hidden> · 2020-03-06
[PATCH v4 04/27] x86/mce: Delete ist_begin_non_atomic() · Peter Zijlstra <peterz@infradead.org> · 2020-02-21
Re: [PATCH v4 04/27] x86/mce: Delete ist_begin_non_atomic() · Andy Lutomirski <luto@kernel.org> · 2020-02-21
Re: [PATCH v4 04/27] x86/mce: Delete ist_begin_non_atomic() · Frederic Weisbecker <frederic@kernel.org> · 2020-02-21

From: Frederic Weisbecker <frederic@kernel.org>
Date: 2020-02-27 13:34:42
Also in: lkml

On Thu, Feb 27, 2020 at 10:10:42AM +0100, Peter Zijlstra wrote:

On Tue, Feb 25, 2020 at 11:10:32PM +0100, Frederic Weisbecker wrote:

quoted

So here is my previous proposal, based on a simple counter, this time
with comments and a few fixes:

I've presumed your SoB and made this your patch.

Ok, thanks!

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