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From: K Prateek Nayak <kprateek.nayak@amd.com>
To: Thomas Gleixner <tglx@kernel.org>, Ingo Molnar <mingo@redhat.com>,
	"Peter Zijlstra" <peterz@infradead.org>,
	Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
	Arnd Bergmann <arnd@arndb.de>
Cc: "Darren Hart" <dvhart@infradead.org>,
	"Davidlohr Bueso" <dave@stgolabs.net>,
	"André Almeida" <andrealmeid@igalia.com>,
	linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org,
	"K Prateek Nayak" <kprateek.nayak@amd.com>
Subject: [RFC PATCH v2 6/7] asm-generic/runtime-const: Add dummy runtime_const_mask_32()
Date: Mon, 16 Mar 2026 05:24:00 +0000	[thread overview]
Message-ID: <20260316052401.18910-7-kprateek.nayak@amd.com> (raw)
In-Reply-To: <20260316052401.18910-1-kprateek.nayak@amd.com>

From: Peter Zijlstra <peterz@infradead.org>

Add a dummy runtime_const_mask_32() for all the architectures that do
not support runtime-const.

Link: https://patch.msgid.link/20260227161841.GH606826@noisy.programming.kicks-ass.net
Not-yet-signed-off-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: K Prateek Nayak <kprateek.nayak@amd.com>
---
 include/asm-generic/runtime-const.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/asm-generic/runtime-const.h b/include/asm-generic/runtime-const.h
index 670499459514..03e6e3e02401 100644
--- a/include/asm-generic/runtime-const.h
+++ b/include/asm-generic/runtime-const.h
@@ -10,6 +10,7 @@
  */
 #define runtime_const_ptr(sym) (sym)
 #define runtime_const_shift_right_32(val, sym) ((u32)(val)>>(sym))
+#define runtime_const_mask_32(val, sym) ((u32)(val)&(sym))
 #define runtime_const_init(type,sym) do { } while (0)
 
 #endif
-- 
2.43.0


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  parent reply	other threads:[~2026-03-16  5:26 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-03-16  5:23 [RFC PATCH v2 0/7] futex: Use runtime constants for futex_hash computation K Prateek Nayak
2026-03-16  5:23 ` [RFC PATCH v2 1/7] x86/runtime-const: Introduce runtime_const_mask_32() K Prateek Nayak
2026-03-16  5:23 ` [RFC PATCH v2 2/7] arm64/runtime-const: " K Prateek Nayak
2026-03-16 11:50   ` David Laight
2026-03-16 17:09     ` K Prateek Nayak
2026-03-16  5:23 ` [RFC PATCH v2 3/7] arm64/runtime-const: Use aarch64_insn_patch_text_nosync() for patching K Prateek Nayak
2026-03-16 11:52   ` David Laight
2026-03-16 17:13     ` K Prateek Nayak
2026-03-16  5:23 ` [RFC PATCH v2 4/7] riscv/runtime-const: Introduce runtime_const_mask_32() K Prateek Nayak
2026-03-16  5:23 ` [RFC PATCH v2 5/7] s390/runtime-const: " K Prateek Nayak
2026-03-16 19:19   ` Heiko Carstens
2026-03-17  1:55     ` K Prateek Nayak
2026-03-16  5:24 ` K Prateek Nayak [this message]
2026-03-16  5:24 ` [RFC PATCH v2 7/7] futex: Use runtime constants for __futex_hash() hot path K Prateek Nayak
2026-03-16  8:14   ` Sebastian Andrzej Siewior
2026-03-16 17:15     ` K Prateek Nayak
2026-03-17  3:06   ` Samuel Holland
2026-03-17  5:11     ` K Prateek Nayak

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