[PATCH 0/6] linux v4.5 updates

[PATCH 0/6] linux v4.5 updates

[Szabolcs Nagy]

update musl headers following linux v4.5 uapi changes.

Szabolcs Nagy (6):
  mips64: add recent linux syscall numbers
  add copy_file_range syscall numbers from linux v4.5
  add IPV6_HDRINCL socket option from linux v4.5
  add SO_ATTACH_REUSEPORT_[CE]BPF socket options from linux v4.5
  add EPOLLEXCLUSIVE epoll flag from linux v4.5
  add MADV_FREE madvise command from linux v4.5

 arch/aarch64/bits/syscall.h | 2 ++
 arch/arm/bits/syscall.h     | 2 ++
 arch/i386/bits/syscall.h    | 2 ++
 arch/mips/bits/syscall.h    | 2 ++
 arch/mips64/bits/syscall.h  | 8 ++++++++
 arch/or1k/bits/syscall.h    | 2 ++
 arch/powerpc/bits/syscall.h | 2 ++
 arch/x32/bits/syscall.h     | 2 ++
 arch/x86_64/bits/syscall.h  | 2 ++
 include/netinet/in.h        | 1 +
 include/sys/epoll.h         | 1 +
 include/sys/mman.h          | 1 +
 include/sys/socket.h        | 3 ++-
 13 files changed, 29 insertions(+), 1 deletion(-)

-- 
2.7.2

[PATCH 1/6] mips64: add recent linux syscall numbers

[Szabolcs Nagy]

add userfaultfd, membarrier and mlock2 system call numbers.
---
 arch/mips64/bits/syscall.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/mips64/bits/syscall.h b/arch/mips64/bits/syscall.h
index d9b4f42..8c81882 100644
--- a/arch/mips64/bits/syscall.h
+++ b/arch/mips64/bits/syscall.h
@@ -314,6 +314,9 @@
 #define __NR_memfd_create		5314
 #define __NR_bpf			5315
 #define __NR_execveat			5316
+#define __NR_userfaultfd		5317
+#define __NR_membarrier			5318
+#define __NR_mlock2			5319
 
 #define SYS_read			5000
 #define SYS_write			5001
@@ -631,3 +634,6 @@
 #define SYS_memfd_create		5314
 #define SYS_bpf				5315
 #define SYS_execveat			5316
+#define SYS_userfaultfd			5317
+#define SYS_membarrier			5318
+#define SYS_mlock2			5319
-- 
2.7.2

[PATCH 2/6] add copy_file_range syscall numbers from linux v4.5

[Szabolcs Nagy]

it was introduced for offloading copying between regular files
in linux commit 29732938a6289a15e907da234d6692a2ead71855

(microblaze and sh does not yet have the syscall number.)
---
 arch/aarch64/bits/syscall.h | 2 ++
 arch/arm/bits/syscall.h     | 2 ++
 arch/i386/bits/syscall.h    | 2 ++
 arch/mips/bits/syscall.h    | 2 ++
 arch/mips64/bits/syscall.h  | 2 ++
 arch/or1k/bits/syscall.h    | 2 ++
 arch/powerpc/bits/syscall.h | 2 ++
 arch/x32/bits/syscall.h     | 2 ++
 arch/x86_64/bits/syscall.h  | 2 ++
 9 files changed, 18 insertions(+)

diff --git a/arch/aarch64/bits/syscall.h b/arch/aarch64/bits/syscall.h
index 31bed73..eddbe92 100644
--- a/arch/aarch64/bits/syscall.h
+++ b/arch/aarch64/bits/syscall.h
@@ -268,6 +268,7 @@
 #define __NR_userfaultfd 282
 #define __NR_membarrier 283
 #define __NR_mlock2 284
+#define __NR_copy_file_range 285
 
 #define SYS_io_setup __NR_io_setup
 #define SYS_io_destroy __NR_io_destroy
@@ -539,3 +540,4 @@
 #define SYS_userfaultfd __NR_userfaultfd
 #define SYS_membarrier __NR_membarrier
 #define SYS_mlock2 __NR_mlock2
+#define SYS_copy_file_range __NR_copy_file_range
diff --git a/arch/arm/bits/syscall.h b/arch/arm/bits/syscall.h
index 036c562..be30be7 100644
--- a/arch/arm/bits/syscall.h
+++ b/arch/arm/bits/syscall.h
@@ -344,6 +344,7 @@
 #define __NR_userfaultfd	388
 #define __NR_membarrier		389
 #define __NR_mlock2		390
+#define __NR_copy_file_range	391
 
 #define __ARM_NR_breakpoint	0x0f0001
 #define __ARM_NR_cacheflush	0x0f0002
@@ -699,3 +700,4 @@
 #define SYS_userfaultfd	388
 #define SYS_membarrier		389
 #define SYS_mlock2		390
+#define SYS_copy_file_range	391
diff --git a/arch/i386/bits/syscall.h b/arch/i386/bits/syscall.h
index b1a389b..25cd50a 100644
--- a/arch/i386/bits/syscall.h
+++ b/arch/i386/bits/syscall.h
@@ -375,6 +375,7 @@
 #define __NR_userfaultfd	374
 #define __NR_membarrier		375
 #define __NR_mlock2		376
+#define __NR_copy_file_range	377
 
 
 /* Repeated with SYS_ prefix */
@@ -756,3 +757,4 @@
 #define SYS_userfaultfd		374
 #define SYS_membarrier		375
 #define SYS_mlock2		376
+#define SYS_copy_file_range	377
diff --git a/arch/mips/bits/syscall.h b/arch/mips/bits/syscall.h
index 340c587..40ca6ba 100644
--- a/arch/mips/bits/syscall.h
+++ b/arch/mips/bits/syscall.h
@@ -357,6 +357,7 @@
 #define __NR_userfaultfd             4357
 #define __NR_membarrier              4358
 #define __NR_mlock2                  4359
+#define __NR_copy_file_range         4360
 
 
 /* Repeated with SYS_ prefix */
@@ -719,3 +720,4 @@
 #define SYS_userfaultfd             4357
 #define SYS_membarrier              4358
 #define SYS_mlock2                  4359
+#define SYS_copy_file_range         4360
diff --git a/arch/mips64/bits/syscall.h b/arch/mips64/bits/syscall.h
index 8c81882..a84a519 100644
--- a/arch/mips64/bits/syscall.h
+++ b/arch/mips64/bits/syscall.h
@@ -317,6 +317,7 @@
 #define __NR_userfaultfd		5317
 #define __NR_membarrier			5318
 #define __NR_mlock2			5319
+#define __NR_copy_file_range		5320
 
 #define SYS_read			5000
 #define SYS_write			5001
@@ -637,3 +638,4 @@
 #define SYS_userfaultfd			5317
 #define SYS_membarrier			5318
 #define SYS_mlock2			5319
+#define SYS_copy_file_range		5320
diff --git a/arch/or1k/bits/syscall.h b/arch/or1k/bits/syscall.h
index a73b232..de810a4 100644
--- a/arch/or1k/bits/syscall.h
+++ b/arch/or1k/bits/syscall.h
@@ -268,6 +268,7 @@
 #define __NR_userfaultfd 282
 #define __NR_membarrier 283
 #define __NR_mlock2 284
+#define __NR_copy_file_range 285
 
 #define SYS_io_setup __NR_io_setup
 #define SYS_io_destroy __NR_io_destroy
@@ -539,3 +540,4 @@
 #define SYS_userfaultfd __NR_userfaultfd
 #define SYS_membarrier __NR_membarrier
 #define SYS_mlock2 __NR_mlock2
+#define SYS_copy_file_range __NR_copy_file_range
diff --git a/arch/powerpc/bits/syscall.h b/arch/powerpc/bits/syscall.h
index e02f56f..eb5295f 100644
--- a/arch/powerpc/bits/syscall.h
+++ b/arch/powerpc/bits/syscall.h
@@ -368,6 +368,7 @@
 #define __NR_userfaultfd           364
 #define __NR_membarrier            365
 #define __NR_mlock2                378
+#define __NR_copy_file_range       379
 
 /*
  * repeated with SYS prefix
@@ -742,3 +743,4 @@
 #define SYS_userfaultfd           364
 #define SYS_membarrier            365
 #define SYS_mlock2                378
+#define SYS_copy_file_range       379
diff --git a/arch/x32/bits/syscall.h b/arch/x32/bits/syscall.h
index 4a1099d..bd5ab3b 100644
--- a/arch/x32/bits/syscall.h
+++ b/arch/x32/bits/syscall.h
@@ -280,6 +280,7 @@
 #define __NR_userfaultfd (__X32_SYSCALL_BIT + 323)
 #define __NR_membarrier (__X32_SYSCALL_BIT + 324)
 #define __NR_mlock2 (__X32_SYSCALL_BIT + 325)
+#define __NR_copy_file_range (__X32_SYSCALL_BIT + 326)
 
 #define __NR_rt_sigaction (__X32_SYSCALL_BIT + 512)
 #define __NR_rt_sigreturn (__X32_SYSCALL_BIT + 513)
@@ -613,6 +614,7 @@
 #define SYS_userfaultfd __NR_userfaultfd
 #define SYS_membarrier __NR_membarrier
 #define SYS_mlock2 __NR_mlock2
+#define SYS_copy_file_range __NR_copy_file_range
 
 
 #define SYS_rt_sigaction __NR_rt_sigaction
diff --git a/arch/x86_64/bits/syscall.h b/arch/x86_64/bits/syscall.h
index 22aa716..1b02df9 100644
--- a/arch/x86_64/bits/syscall.h
+++ b/arch/x86_64/bits/syscall.h
@@ -324,6 +324,7 @@
 #define __NR_userfaultfd			323
 #define __NR_membarrier				324
 #define __NR_mlock2				325
+#define __NR_copy_file_range			326
 
 
 
@@ -655,3 +656,4 @@
 #define SYS_userfaultfd				323
 #define SYS_membarrier				324
 #define SYS_mlock2				325
+#define SYS_copy_file_range			326
-- 
2.7.2

[PATCH 3/6] add IPV6_HDRINCL socket option from linux v4.5

[Szabolcs Nagy]

new in linux commit 715f504b118998c41a2079a17e16bf5a8a114885
same as IP_HDRINCL but for SOL_IPV6 sockets.
---
 include/netinet/in.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/netinet/in.h b/include/netinet/in.h
index 622bdfe..04cc81c 100644
--- a/include/netinet/in.h
+++ b/include/netinet/in.h
@@ -344,6 +344,7 @@ struct ip6_mtuinfo
 #define IPV6_LEAVE_ANYCAST      28
 #define IPV6_IPSEC_POLICY       34
 #define IPV6_XFRM_POLICY        35
+#define IPV6_HDRINCL            36
 
 #define IPV6_RECVPKTINFO        49
 #define IPV6_PKTINFO            50
-- 
2.7.2

[PATCH 4/6] add SO_ATTACH_REUSEPORT_[CE]BPF socket options from linux v4.5

[Szabolcs Nagy]

new socket options for setting classic or extended BPF program
for sockets in a SO_REUSEPORT group.  added in linux commit
538950a1b7527a0a52ccd9337e3fcd304f027f13
---
 include/sys/socket.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/sys/socket.h b/include/sys/socket.h
index a4db940..fd65349 100644
--- a/include/sys/socket.h
+++ b/include/sys/socket.h
@@ -220,7 +220,8 @@ struct linger
 #define SO_INCOMING_CPU         49
 #define SO_ATTACH_BPF           50
 #define SO_DETACH_BPF           SO_DETACH_FILTER
-
+#define SO_ATTACH_REUSEPORT_CBPF 51
+#define SO_ATTACH_REUSEPORT_EBPF 52
 
 #ifndef SOL_SOCKET
 #define SOL_SOCKET      1
-- 
2.7.2

[PATCH 5/6] add EPOLLEXCLUSIVE epoll flag from linux v4.5

[Szabolcs Nagy]

new flag for exclusive wakeup mode when an event source fd is attached
to multiple epoll fds but they should not all receive the events.
new in linux commit df0108c5da561c66c333bb46bfe3c1fc65905898
---
 include/sys/epoll.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/sys/epoll.h b/include/sys/epoll.h
index 1f0312e..ffe2311 100644
--- a/include/sys/epoll.h
+++ b/include/sys/epoll.h
@@ -28,6 +28,7 @@ enum EPOLL_EVENTS { __EPOLL_DUMMY };
 #define EPOLLERR 0x008
 #define EPOLLHUP 0x010
 #define EPOLLRDHUP 0x2000
+#define EPOLLEXCLUSIVE (1U<<28)
 #define EPOLLWAKEUP (1U<<29)
 #define EPOLLONESHOT (1U<<30)
 #define EPOLLET (1U<<31)
-- 
2.7.2

[PATCH 6/6] add MADV_FREE madvise command from linux v4.5

[Szabolcs Nagy]

allows the os to free the marked pages lazily on memory pressure.
expected to increase malloc performance.
new in linux commit 854e9ed09dedf0c19ac8640e91bcc74bc3f9e5c9
---
 include/sys/mman.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/sys/mman.h b/include/sys/mman.h
index 596a03a..8a5149c 100644
--- a/include/sys/mman.h
+++ b/include/sys/mman.h
@@ -62,6 +62,7 @@ extern "C" {
 #define MADV_SEQUENTIAL  2
 #define MADV_WILLNEED    3
 #define MADV_DONTNEED    4
+#define MADV_FREE        8
 #define MADV_REMOVE      9
 #define MADV_DONTFORK    10
 #define MADV_DOFORK      11
-- 
2.7.2

Re: [PATCH 0/6] linux v4.5 updates

[Rich Felker]

On Sat, Mar 19, 2016 at 01:34:27PM +0100, Szabolcs Nagy wrote:
> update musl headers following linux v4.5 uapi changes.
> 
> Szabolcs Nagy (6):
>   mips64: add recent linux syscall numbers
>   add copy_file_range syscall numbers from linux v4.5
>   add IPV6_HDRINCL socket option from linux v4.5
>   add SO_ATTACH_REUSEPORT_[CE]BPF socket options from linux v4.5
>   add EPOLLEXCLUSIVE epoll flag from linux v4.5
>   add MADV_FREE madvise command from linux v4.5

All look good; committing them. Thanks for sending to the ML this
time; it makes applying them with git am very easy.

Rich