linux-kernel - [PATCH] arm64: wire up cachestat for arm64

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Message-Id: <20230511092843.3896327-1-nphamcs@gmail.com>
Date:   Thu, 11 May 2023 02:28:43 -0700
From:   Nhat Pham <nphamcs@...il.com>
To:     akpm@...ux-foundation.org
Cc:     linux-api@...r.kernel.org, kernel-team@...a.com,
        linux-arch@...r.kernel.org, hannes@...xchg.org, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, arnd@...db.de,
        catalin.marinas@....com, will@...nel.org,
        linux-arm-kernel@...ts.infradead.org
Subject: [PATCH] arm64: wire up cachestat for arm64

cachestat is a new syscall that was previously wired in for most
architectures:

https://lore.kernel.org/lkml/20230503013608.2431726-1-nphamcs@gmail.com/
https://lore.kernel.org/linux-mm/20230510195806.2902878-1-nphamcs@gmail.com/

However, those patches miss arm64, which has its own syscall table in arch/arm64.
This patch wires cachestat in for arm64.

Signed-off-by: Nhat Pham <nphamcs@...il.com>
Suggested-by: Geert Uytterhoeven <geert@...ux-m68k.org>
Suggested-by: Arnd Bergmann <arnd@...db.de>
---
 arch/arm64/include/asm/unistd.h   | 2 +-
 arch/arm64/include/asm/unistd32.h | 2 ++
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/include/asm/unistd.h b/arch/arm64/include/asm/unistd.h
index 037feba03a51..64a514f90131 100644
--- a/arch/arm64/include/asm/unistd.h
+++ b/arch/arm64/include/asm/unistd.h
@@ -39,7 +39,7 @@
 #define __ARM_NR_compat_set_tls		(__ARM_NR_COMPAT_BASE + 5)
 #define __ARM_NR_COMPAT_END		(__ARM_NR_COMPAT_BASE + 0x800)
 
-#define __NR_compat_syscalls		451
+#define __NR_compat_syscalls		452
 #endif
 
 #define __ARCH_WANT_SYS_CLONE
diff --git a/arch/arm64/include/asm/unistd32.h b/arch/arm64/include/asm/unistd32.h
index 604a2053d006..d952a28463e0 100644
--- a/arch/arm64/include/asm/unistd32.h
+++ b/arch/arm64/include/asm/unistd32.h
@@ -907,6 +907,8 @@ __SYSCALL(__NR_process_mrelease, sys_process_mrelease)
 __SYSCALL(__NR_futex_waitv, sys_futex_waitv)
 #define __NR_set_mempolicy_home_node 450
 __SYSCALL(__NR_set_mempolicy_home_node, sys_set_mempolicy_home_node)
+#define __NR_cachestat 451
+__SYSCALL(__NR_cachestat, sys_cachestat)
 
 /*
  * Please add new compat syscalls above this comment and update
-- 
2.34.1