Commit bff9504b authored Mar 05, 2019 by Mathieu Desnoyers Committed by Ingo Molnar Apr 19, 2019

rseq: Clean up comments by reflecting removal of event counter

The "event counter" was removed from rseq before it was merged upstream.
However, a few comments in the source code still refer to it. Adapt the
comments to match reality.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Ben Maurer <bmaurer@fb.com>
Cc: Boqun Feng <boqun.feng@gmail.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Chris Lameter <cl@linux.com>
Cc: Dave Watson <davejwatson@fb.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Joel Fernandes <joelaf@google.com>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Michael Kerrisk <mtk.manpages@gmail.com>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Paul Turner <pjt@google.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Deacon <will.deacon@arm.com>
Cc: linux-api@vger.kernel.org
Link: http://lkml.kernel.org/r/20190305194755.2602-2-mathieu.desnoyers@efficios.com

Signed-off-by: Ingo Molnar <mingo@kernel.org>

parent e53f31bf

arch/arm/kernel/signal.c

+1 −2

Original line number	Diff line number	Diff line
		@@ -549,8 +549,7 @@ static void handle_signal(struct ksignal ksig, struct pt_regs regs)
		int ret;

		/*
		* Increment event counter and perform fixup for the pre-signal
		* frame.
		* Perform fixup for the pre-signal frame.
		*/
		rseq_signal_deliver(ksig, regs);

arch/x86/kernel/signal.c

+1 −4

Original line number	Diff line number	Diff line
		@@ -688,10 +688,7 @@ setup_rt_frame(struct ksignal ksig, struct pt_regs regs)
		sigset_t *set = sigmask_to_save();
		compat_sigset_t cset = (compat_sigset_t ) set;

		/*
		* Increment event counter and perform fixup for the pre-signal
		* frame.
		*/
		/* Perform fixup for the pre-signal frame. */
		rseq_signal_deliver(ksig, regs);

		/* Set up the stack frame */

kernel/rseq.c

+1 −2

Original line number	Diff line number	Diff line
		@@ -254,8 +254,7 @@ static int rseq_ip_fixup(struct pt_regs *regs)
		* - signal delivery,
		* and return to user-space.
		*
		* This is how we can ensure that the entire rseq critical section,
		* consisting of both the C part and the assembly instruction sequence,
		* This is how we can ensure that the entire rseq critical section
		* will issue the commit instruction only if executed atomically with
		* respect to other threads scheduled on the same CPU, and with respect
		* to signal handlers.

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