linux.git/tools/perf/check-headers.sh, branch v5.6

tools include UAPI: Sync x86's syscalls_64.tbl, generic unistd.h and fcntl.h to pick up openat2 and pidfd_getfd

2020-02-11T19:41:06+00:00

  fddb5d430ad9 ("open: introduce openat2(2) syscall")
  9a2cef09c801 ("arch: wire up pidfd_getfd syscall")

We also need to grab a copy of uapi/linux/openat2.h since it is now
needed by fcntl.h, add it to tools/perf/check_headers.h.

  $ diff -u tools/perf/arch/x86/entry/syscalls/syscall_64.tbl arch/x86/entry/syscalls/syscall_64.tbl
  --- tools/perf/arch/x86/entry/syscalls/syscall_64.tbl	2019-12-20 16:43:57.662429958 -0300
  +++ arch/x86/entry/syscalls/syscall_64.tbl	2020-02-10 16:36:22.070012468 -0300
  @@ -357,6 +357,8 @@
   433	common	fspick			__x64_sys_fspick
   434	common	pidfd_open		__x64_sys_pidfd_open
   435	common	clone3			__x64_sys_clone3/ptregs
  +437	common	openat2			__x64_sys_openat2
  +438	common	pidfd_getfd		__x64_sys_pidfd_getfd

   #
   # x32-specific system call numbers start at 512 to avoid cache impact
  $

Update tools/'s copy of that file:

  $ cp arch/x86/entry/syscalls/syscall_64.tbl tools/perf/arch/x86/entry/syscalls/syscall_64.tbl

See the result:

  $ diff -u /tmp/build/perf/arch/x86/include/generated/asm/syscalls_64.c.before /tmp/build/perf/arch/x86/include/generated/asm/syscalls_64.c
  --- /tmp/build/perf/arch/x86/include/generated/asm/syscalls_64.c.before	2020-02-10 16:42:59.010636041 -0300
  +++ /tmp/build/perf/arch/x86/include/generated/asm/syscalls_64.c	2020-02-10 16:43:24.149958337 -0300
  @@ -346,5 +346,7 @@
   	[433] = "fspick",
   	[434] = "pidfd_open",
   	[435] = "clone3",
  +	[437] = "openat2",
  +	[438] = "pidfd_getfd",
   };
  -#define SYSCALLTBL_x86_64_MAX_ID 435
  +#define SYSCALLTBL_x86_64_MAX_ID 438
  $

Now one can use:

  perf trace -e openat2,pidfd_getfd

To get just those syscalls or use in things like:

  perf trace -e open*

To get all the open variant (open, openat, openat2, etc) or:

  perf trace pidfd*

To get the pidfd syscalls.

Cc: Adrian Hunter 
Cc: Aleksa Sarai 
Cc: Al Viro 
Cc: Christian Brauner 
Cc: Jiri Olsa 
Cc: Namhyung Kim 
Cc: Sargun Dhillon 
Signed-off-by: Arnaldo Carvalho de Melo

perf bench: Update the copies of x86's mem{cpy,set}_64.S

2019-12-02T14:40:57+00:00

And update linux/linkage.h, which requires in turn that we make these
files switch from ENTRY()/ENDPROC() to SYM_FUNC_START()/SYM_FUNC_END():

  tools/perf/arch/arm64/tests/regs_load.S
  tools/perf/arch/arm/tests/regs_load.S
  tools/perf/arch/powerpc/tests/regs_load.S
  tools/perf/arch/x86/tests/regs_load.S

We also need to switch SYM_FUNC_START_LOCAL() to SYM_FUNC_START() for
the functions used directly by 'perf bench', and update
tools/perf/check_headers.sh to ignore those changes when checking if the
kernel original files drifted from the copies we carry.

This is to get the changes from:

  6dcc5627f6ae ("x86/asm: Change all ENTRY+ENDPROC to SYM_FUNC_*")
  ef1e03152cb0 ("x86/asm: Make some functions local")
  e9b9d020c487 ("x86/asm: Annotate aliases")

And address these tools/perf build warnings:

  Warning: Kernel ABI header at 'tools/arch/x86/lib/memcpy_64.S' differs from latest version at 'arch/x86/lib/memcpy_64.S'
  diff -u tools/arch/x86/lib/memcpy_64.S arch/x86/lib/memcpy_64.S
  Warning: Kernel ABI header at 'tools/arch/x86/lib/memset_64.S' differs from latest version at 'arch/x86/lib/memset_64.S'
  diff -u tools/arch/x86/lib/memset_64.S arch/x86/lib/memset_64.S

Cc: Adrian Hunter 
Cc: Borislav Petkov 
Cc: Jiri Olsa 
Cc: Jiri Slaby 
Cc: Namhyung Kim 
Link: https://lkml.kernel.org/n/tip-tay3l8x8k11p7y3qcpqh9qh5@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

Merge branch 'x86/core' into perf/core, to resolve conflicts and to pick up completed topic tree

2019-11-25T08:09:27+00:00

Conflicts:
	tools/perf/check-headers.sh

Signed-off-by: Ingo Molnar

x86: xen: insn: Decode Xen and KVM emulate-prefix signature

2019-10-17T19:31:57+00:00

Decode Xen and KVM's emulate-prefix signature by x86 insn decoder.
It is called "prefix" but actually not x86 instruction prefix, so
this adds insn.emulate_prefix_size field instead of reusing
insn.prefixes.

If x86 decoder finds a special sequence of instructions of
XEN_EMULATE_PREFIX and 'ud2a; .ascii "kvm"', it just counts the
length, set insn.emulate_prefix_size and fold it with the next
instruction. In other words, the signature and the next instruction
is treated as a single instruction.

Signed-off-by: Masami Hiramatsu 
Signed-off-by: Peter Zijlstra (Intel) 
Acked-by: Josh Poimboeuf 
Cc: Juergen Gross 
Cc: x86@kernel.org
Cc: Boris Ostrovsky 
Cc: Ingo Molnar 
Cc: Stefano Stabellini 
Cc: Andrew Cooper 
Cc: Borislav Petkov 
Cc: xen-devel@lists.xenproject.org
Cc: Randy Dunlap 
Link: https://lkml.kernel.org/r/156777564986.25081.4964537658500952557.stgit@devnote2

tools arch x86: Grab a copy of the file containing the IRQ vector defines

2019-10-15T18:42:01+00:00

We'll use it to generate a table and then convert the irq_vectors:*
tracepoint 'vector' arg in things like perf trace, script, etc.

Cc: Adrian Hunter 
Cc: Andi Kleen 
Cc: David Ahern 
Cc: Jiri Olsa 
Cc: Luis Cláudio Gonçalves 
Cc: Namhyung Kim 
Link: https://lkml.kernel.org/n/tip-z7gi058lzhnrm32slevg3xod@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

tools arch x86: Grab a copy of the file containing the MSR numbers

2019-10-07T15:22:18+00:00

We'll use it to generate a table and then convert the
msr:{read,write}_msr 'msr' option in things like perf trace, script,
etc.

Cc: Adrian Hunter 
Cc: Jiri Olsa 
Cc: Namhyung Kim 
Link: https://lkml.kernel.org/n/tip-y1f4s0y1s43d4drh7pd2huzn@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

tools headers uapi: Sync linux/fs.h with the kernel sources

2019-09-30T20:29:22+00:00

To pick the changes from:

  78a1b96bcf7a ("fscrypt: add FS_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS ioctl")
  23c688b54016 ("fscrypt: allow unprivileged users to add/remove keys for v2 policies")
  5dae460c2292 ("fscrypt: v2 encryption policy support")
  5a7e29924dac ("fscrypt: add FS_IOC_GET_ENCRYPTION_KEY_STATUS ioctl")
  b1c0ec3599f4 ("fscrypt: add FS_IOC_REMOVE_ENCRYPTION_KEY ioctl")
  22d94f493bfb ("fscrypt: add FS_IOC_ADD_ENCRYPTION_KEY ioctl")
  3b6df59bc4d2 ("fscrypt: use FSCRYPT_* definitions, not FS_*")
  2336d0deb2d4 ("fscrypt: use FSCRYPT_ prefix for uapi constants")
  7af0ab0d3aab ("fs, fscrypt: move uapi definitions to new header ")

That don't trigger any changes in tooling, as it so far is used only
for:

  $ grep -l 'fs\.h' tools/perf/trace/beauty/*.sh | xargs grep regex=
  tools/perf/trace/beauty/rename_flags.sh:regex='^[[:space:]]*#[[:space:]]*define[[:space:]]+RENAME_([[:alnum:]_]+)[[:space:]]+\(1[[:space:]]*<<[[:space:]]*([[:xdigit:]]+)[[:space:]]*\)[[:space:]]*.*'
  tools/perf/trace/beauty/sync_file_range.sh:regex='^[[:space:]]*#[[:space:]]*define[[:space:]]+SYNC_FILE_RANGE_([[:alnum:]_]+)[[:space:]]+([[:xdigit:]]+)[[:space:]]*.*'
  tools/perf/trace/beauty/usbdevfs_ioctl.sh:regex="^#[[:space:]]*define[[:space:]]+USBDEVFS_(\w+)(\(\w+\))?[[:space:]]+_IO[CWR]{0,2}\([[:space:]]*(_IOC_\w+,[[:space:]]*)?'U'[[:space:]]*,[[:space:]]*([[:digit:]]+).*"
  tools/perf/trace/beauty/usbdevfs_ioctl.sh:regex="^#[[:space:]]*define[[:space:]]+USBDEVFS_(\w+)[[:space:]]+_IO[WR]{0,2}\([[:space:]]*'U'[[:space:]]*,[[:space:]]*([[:digit:]]+).*"
  $

This silences this perf build warning:

  Warning: Kernel ABI header at 'tools/include/uapi/linux/fs.h' differs from latest version at 'include/uapi/linux/fs.h'
  diff -u tools/include/uapi/linux/fs.h include/uapi/linux/fs.h

Cc: Adrian Hunter 
Cc: Eric Biggers 
Cc: Jiri Olsa 
Cc: Namhyung Kim 
Link: https://lkml.kernel.org/n/tip-44g48exl9br9ba0t64chqb4i@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

perf build: Ignore intentional differences for the x86 insn decoder

2019-09-01T01:27:52+00:00

Since we need to build this in !x86, we need to explicitely use the x86
files, not things like asm/insn.h, so we intentionally differ from the
master copy in the kernel sources, add -I diff directives to ignore just
these differences when checking for drift.

Acked-by: Josh Poimboeuf 
Acked-by: Masami Hiramatsu 
Cc: Adrian Hunter 
Cc: Jiri Olsa 
Cc: Namhyung Kim 
Cc: Peter Zijlstra (Intel) 
Link: https://lkml.kernel.org/n/tip-9qziqjjt120mmz6kyepka9p7@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

perf intel-pt: Use shared x86 insn decoder

2019-09-01T01:27:52+00:00

Now that there's a common version of the decoder for all tools, use it
instead of the local copy.

Also use perf's check-headers.sh script to diff the decoder files to
make sure they remain in sync with the kernel version.  Objtool has a
similar check.

Committer notes:

Had to keep this all pointing explicitely to x86 headers/files, i.e.
instead of asm/isnn.h we had to use ../include/asm/insn.h when the files
were in differemt dirs, or just replace "" with "foo.h".

This way we continue to be able to process perf.data files with Intel PT
traces in distros other than x86.

Also fixed up the awk script paths to use $(srcdir)/tools/arch instead
or relative directories so that we keep detached tarballs (make help |
grep perf) working.

For now the include lines in these headers are being ignored so as not
to flag false reports of kernel/tools out of sync.

Signed-off-by: Josh Poimboeuf 
Reviewed-by: Masami Hiramatsu 
Acked-by: Peter Zijlstra (Intel) 
Cc: Adrian Hunter 
Cc: Jiri Olsa 
Cc: x86@kernel.org
Link: http://lore.kernel.org/lkml/8a37e615d2880f039505d693d1e068a009358a2b.1567118001.git.jpoimboe@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo

tools headers: Grab copy of linux/const.h, needed by linux/bits.h

2019-08-20T15:08:23+00:00

So that can update the copy of linux/bits.h that now uses macros defined
in const.h and that are not available in older systems.

Cc: Adrian Hunter 
Cc: Jiri Olsa 
Cc: Namhyung Kim 
Link: https://lkml.kernel.org/n/tip-c2qfcbl58hxyfb5u5xivp7is@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo