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Date: Tue, 26 Jul 2022 21:18:52 +0500
From: Muhammad Usama Anjum <usama.anjum@...labora.com>
To: Jonathan Corbet <corbet@....net>,
Andy Lutomirski <luto@...nel.org>,
Thomas Gleixner <tglx@...utronix.de>,
Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
Dave Hansen <dave.hansen@...ux.intel.com>,
x86@...nel.org (maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)),
"H. Peter Anvin" <hpa@...or.com>, Arnd Bergmann <arnd@...db.de>,
Andrew Morton <akpm@...ux-foundation.org>,
Peter Zijlstra <peterz@...radead.org>,
Arnaldo Carvalho de Melo <acme@...nel.org>,
Mark Rutland <mark.rutland@....com>,
Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
Jiri Olsa <jolsa@...nel.org>,
Namhyung Kim <namhyung@...nel.org>,
Shuah Khan <shuah@...nel.org>,
linux-doc@...r.kernel.org (open list:DOCUMENTATION),
linux-kernel@...r.kernel.org (open list),
linux-fsdevel@...r.kernel.org (open list:PROC FILESYSTEM),
linux-api@...r.kernel.org (open list:ABI/API),
linux-arch@...r.kernel.org (open list:GENERIC INCLUDE/ASM HEADER FILES),
linux-mm@...ck.org (open list:MEMORY MANAGEMENT),
linux-perf-users@...r.kernel.org (open list:PERFORMANCE EVENTS
SUBSYSTEM),
linux-kselftest@...r.kernel.org (open list:KERNEL SELFTEST FRAMEWORK),
krisman@...labora.com
Cc: Muhammad Usama Anjum <usama.anjum@...labora.com>,
kernel@...labora.com
Subject: [PATCH 3/5] mm: wire up process_memwatch syscall for x86
Wire up syscall entry point for both i386 and x86_64 architectures.
Signed-off-by: Muhammad Usama Anjum <usama.anjum@...labora.com>
---
arch/x86/entry/syscalls/syscall_32.tbl | 1 +
arch/x86/entry/syscalls/syscall_64.tbl | 1 +
include/linux/syscalls.h | 3 ++-
include/uapi/asm-generic/unistd.h | 5 ++++-
kernel/sys_ni.c | 1 +
tools/include/uapi/asm-generic/unistd.h | 5 ++++-
tools/perf/arch/x86/entry/syscalls/syscall_64.tbl | 1 +
7 files changed, 14 insertions(+), 3 deletions(-)
diff --git a/arch/x86/entry/syscalls/syscall_32.tbl b/arch/x86/entry/syscalls/syscall_32.tbl
index 320480a8db4f..601d33909880 100644
--- a/arch/x86/entry/syscalls/syscall_32.tbl
+++ b/arch/x86/entry/syscalls/syscall_32.tbl
@@ -455,3 +455,4 @@
448 i386 process_mrelease sys_process_mrelease
449 i386 futex_waitv sys_futex_waitv
450 i386 set_mempolicy_home_node sys_set_mempolicy_home_node
+451 i386 process_memwatch sys_process_memwatch
diff --git a/arch/x86/entry/syscalls/syscall_64.tbl b/arch/x86/entry/syscalls/syscall_64.tbl
index c84d12608cd2..3bddea588ce7 100644
--- a/arch/x86/entry/syscalls/syscall_64.tbl
+++ b/arch/x86/entry/syscalls/syscall_64.tbl
@@ -372,6 +372,7 @@
448 common process_mrelease sys_process_mrelease
449 common futex_waitv sys_futex_waitv
450 common set_mempolicy_home_node sys_set_mempolicy_home_node
+451 common process_memwatch sys_process_memwatch
#
# Due to a historical design error, certain syscalls are numbered differently
diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h
index a34b0f9a9972..efa240510e4c 100644
--- a/include/linux/syscalls.h
+++ b/include/linux/syscalls.h
@@ -939,7 +939,6 @@ asmlinkage long sys_move_pages(pid_t pid, unsigned long nr_pages,
const int __user *nodes,
int __user *status,
int flags);
-
asmlinkage long sys_rt_tgsigqueueinfo(pid_t tgid, pid_t pid, int sig,
siginfo_t __user *uinfo);
asmlinkage long sys_perf_event_open(
@@ -1056,6 +1055,8 @@ asmlinkage long sys_memfd_secret(unsigned int flags);
asmlinkage long sys_set_mempolicy_home_node(unsigned long start, unsigned long len,
unsigned long home_node,
unsigned long flags);
+asmlinkage long sys_process_memwatch(int pidfd, void __user *addr, int len,
+ unsigned int flags, loff_t __user *vec, int vec_len);
/*
* Architecture-specific system calls
diff --git a/include/uapi/asm-generic/unistd.h b/include/uapi/asm-generic/unistd.h
index 45fa180cc56a..805a8d5cf0c4 100644
--- a/include/uapi/asm-generic/unistd.h
+++ b/include/uapi/asm-generic/unistd.h
@@ -886,8 +886,11 @@ __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_process_memwatch 451
+__SC_COMP(__NR_process_memwatch, sys_process_memwatch, compat_sys_process_memwatch)
+
#undef __NR_syscalls
-#define __NR_syscalls 451
+#define __NR_syscalls 452
/*
* 32 bit systems traditionally used different
diff --git a/kernel/sys_ni.c b/kernel/sys_ni.c
index a492f159624f..74f31317481a 100644
--- a/kernel/sys_ni.c
+++ b/kernel/sys_ni.c
@@ -298,6 +298,7 @@ COND_SYSCALL(set_mempolicy);
COND_SYSCALL(migrate_pages);
COND_SYSCALL(move_pages);
COND_SYSCALL(set_mempolicy_home_node);
+COND_SYSCALL(process_memwatch);
COND_SYSCALL(perf_event_open);
COND_SYSCALL(accept4);
diff --git a/tools/include/uapi/asm-generic/unistd.h b/tools/include/uapi/asm-generic/unistd.h
index 45fa180cc56a..805a8d5cf0c4 100644
--- a/tools/include/uapi/asm-generic/unistd.h
+++ b/tools/include/uapi/asm-generic/unistd.h
@@ -886,8 +886,11 @@ __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_process_memwatch 451
+__SC_COMP(__NR_process_memwatch, sys_process_memwatch, compat_sys_process_memwatch)
+
#undef __NR_syscalls
-#define __NR_syscalls 451
+#define __NR_syscalls 452
/*
* 32 bit systems traditionally used different
diff --git a/tools/perf/arch/x86/entry/syscalls/syscall_64.tbl b/tools/perf/arch/x86/entry/syscalls/syscall_64.tbl
index c84d12608cd2..3bddea588ce7 100644
--- a/tools/perf/arch/x86/entry/syscalls/syscall_64.tbl
+++ b/tools/perf/arch/x86/entry/syscalls/syscall_64.tbl
@@ -372,6 +372,7 @@
448 common process_mrelease sys_process_mrelease
449 common futex_waitv sys_futex_waitv
450 common set_mempolicy_home_node sys_set_mempolicy_home_node
+451 common process_memwatch sys_process_memwatch
#
# Due to a historical design error, certain syscalls are numbered differently
--
2.30.2
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