perf trace beauty: Default header_dir to cwd to work without parms

Useful when checking the effects of header synchs for the files it uses
as a input to generate string tables, in retrospect this is how it
should've been done from day 1, not requiring the header_dir to be set
on the Makefile, will change everything later, so that the only parm,
common to all generators will be $(srctree) and $(beauty_outdir).

So, to see what it generates, just call it without any parameters:

  $ tools/perf/trace/beauty/vhost_virtio_ioctl.sh
  static const char *vhost_virtio_ioctl_cmds[] = {
	[0x00] = "SET_FEATURES",
	[0x01] = "SET_OWNER",
	[0x02] = "RESET_OWNER",
	[0x03] = "SET_MEM_TABLE",
	[0x04] = "SET_LOG_BASE",
	[0x07] = "SET_LOG_FD",
	[0x10] = "SET_VRING_NUM",
	[0x11] = "SET_VRING_ADDR",
	[0x12] = "SET_VRING_BASE",
	[0x13] = "SET_VRING_ENDIAN",
	[0x14] = "GET_VRING_ENDIAN",
	[0x20] = "SET_VRING_KICK",
	[0x21] = "SET_VRING_CALL",
	[0x22] = "SET_VRING_ERR",
	[0x23] = "SET_VRING_BUSYLOOP_TIMEOUT",
	[0x24] = "GET_VRING_BUSYLOOP_TIMEOUT",
	[0x30] = "NET_SET_BACKEND",
	[0x40] = "SCSI_SET_ENDPOINT",
	[0x41] = "SCSI_CLEAR_ENDPOINT",
	[0x42] = "SCSI_GET_ABI_VERSION",
	[0x43] = "SCSI_SET_EVENTS_MISSED",
	[0x44] = "SCSI_GET_EVENTS_MISSED",
	[0x60] = "VSOCK_SET_GUEST_CID",
	[0x61] = "VSOCK_SET_RUNNING",
  };
  static const char *vhost_virtio_ioctl_read_cmds[] = {
	[0x00] = "GET_FEATURES",
	[0x12] = "GET_VRING_BASE",
  };
  $

Or:

  $ tools/perf/trace/beauty/sndrv_pcm_ioctl.sh
  static const char *sndrv_pcm_ioctl_cmds[] = {
	[0x00] = "PVERSION",
	[0x01] = "INFO",
	[0x02] = "TSTAMP",
	[0x03] = "TTSTAMP",
	[0x04] = "USER_PVERSION",
	[0x10] = "HW_REFINE",
	[0x11] = "HW_PARAMS",
	[0x12] = "HW_FREE",
	[0x13] = "SW_PARAMS",
	[0x20] = "STATUS",
	[0x21] = "DELAY",
	[0x22] = "HWSYNC",
	[0x23] = "SYNC_PTR",
	[0x24] = "STATUS_EXT",
	[0x32] = "CHANNEL_INFO",
	[0x40] = "PREPARE",
	[0x41] = "RESET",
	[0x42] = "START",
	[0x43] = "DROP",
	[0x44] = "DRAIN",
	[0x45] = "PAUSE",
	[0x46] = "REWIND",
	[0x47] = "RESUME",
	[0x48] = "XRUN",
	[0x49] = "FORWARD",
	[0x50] = "WRITEI_FRAMES",
	[0x51] = "READI_FRAMES",
	[0x52] = "WRITEN_FRAMES",
	[0x53] = "READN_FRAMES",
	[0x60] = "LINK",
	[0x61] = "UNLINK",
  };
  $

Etc.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: https://lkml.kernel.org/n/tip-90am4vm8hh1osms894dp2otr@git.kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/trace/beauty/drm_ioctl.sh

 #!/bin/sh
 
-drm_header_dir=$1
+[ $# -eq 1 ] && header_dir=$1 || header_dir=tools/include/uapi/drm/
+
 printf "#ifndef DRM_COMMAND_BASE\n"
-grep "#define DRM_COMMAND_BASE" $drm_header_dir/drm.h
+grep "#define DRM_COMMAND_BASE" $header_dir/drm.h
 printf "#endif\n"
 
 printf "static const char *drm_ioctl_cmds[] = {\n"
-grep "^#define DRM_IOCTL.*DRM_IO" $drm_header_dir/drm.h | \
+grep "^#define DRM_IOCTL.*DRM_IO" $header_dir/drm.h | \
 	sed -r 's/^#define +DRM_IOCTL_([A-Z0-9_]+)[	 ]+DRM_IO[A-Z]* *\( *(0x[[:xdigit:]]+),*.*/	[\2] = "\1",/g'
-grep "^#define DRM_I915_[A-Z_0-9]\+[	 ]\+0x" $drm_header_dir/i915_drm.h | \
+grep "^#define DRM_I915_[A-Z_0-9]\+[	 ]\+0x" $header_dir/i915_drm.h | \
 	sed -r 's/^#define +DRM_I915_([A-Z0-9_]+)[	 ]+(0x[[:xdigit:]]+)/\t[DRM_COMMAND_BASE + \2] = "I915_\1",/g'
 printf "};\n"

tools/perf/trace/beauty/kcmp_type.sh

 #!/bin/sh
 
-header_dir=$1
+[ $# -eq 1 ] && header_dir=$1 || header_dir=tools/include/uapi/linux/
 
 printf "static const char *kcmp_types[] = {\n"
 regex='^[[:space:]]+(KCMP_(\w+)),'

tools/perf/trace/beauty/kvm_ioctl.sh

 #!/bin/sh
 
-kvm_header_dir=$1
+[ $# -eq 1 ] && header_dir=$1 || header_dir=tools/include/uapi/linux/
 
 printf "static const char *kvm_ioctl_cmds[] = {\n"
 regex='^#[[:space:]]*define[[:space:]]+KVM_(\w+)[[:space:]]+_IO[RW]*\([[:space:]]*KVMIO[[:space:]]*,[[:space:]]*(0x[[:xdigit:]]+).*'
-egrep $regex ${kvm_header_dir}/kvm.h	| \
+egrep $regex ${header_dir}/kvm.h	| \
 	sed -r "s/$regex/\2 \1/g"	| \
 	egrep -v " ((ARM|PPC|S390)_|[GS]ET_(DEBUGREGS|PIT2|XSAVE|TSC_KHZ)|CREATE_SPAPR_TCE_64)" | \
 	sort | xargs printf "\t[%s] = \"%s\",\n"

tools/perf/trace/beauty/madvise_behavior.sh

 #!/bin/sh
 
-header_dir=$1
+[ $# -eq 1 ] && header_dir=$1 || header_dir=tools/include/uapi/asm-generic/
 
 printf "static const char *madvise_advices[] = {\n"
 regex='^[[:space:]]*#[[:space:]]*define[[:space:]]+MADV_([[:alnum:]_]+)[[:space:]]+([[:digit:]]+)[[:space:]]*.*'

tools/perf/trace/beauty/perf_ioctl.sh

 #!/bin/sh
 
-header_dir=$1
+[ $# -eq 1 ] && header_dir=$1 || header_dir=tools/include/uapi/linux/
 
 printf "static const char *perf_ioctl_cmds[] = {\n"
 regex='^#[[:space:]]*define[[:space:]]+PERF_EVENT_IOC_(\w+)[[:space:]]+_IO[RW]*[[:space:]]*\([[:space:]]*.\$.[[:space:]]*,[[:space:]]*([[:digit:]]+).*'

tools/perf/trace/beauty/pkey_alloc_access_rights.sh

 #!/bin/sh
 
-header_dir=$1
+[ $# -eq 1 ] && header_dir=$1 || header_dir=tools/include/uapi/asm-generic/
 
 printf "static const char *pkey_alloc_access_rights[] = {\n"
 regex='^[[:space:]]*#[[:space:]]*define[[:space:]]+PKEY_([[:alnum:]_]+)[[:space:]]+(0x[[:xdigit:]]+)[[:space:]]*'

tools/perf/trace/beauty/sndrv_ctl_ioctl.sh

 #!/bin/sh
 
-sound_header_dir=$1
+[ $# -eq 1 ] && header_dir=$1 || header_dir=tools/include/uapi/sound/
 
 printf "static const char *sndrv_ctl_ioctl_cmds[] = {\n"
-grep "^#define[\t ]\+SNDRV_CTL_IOCTL_" $sound_header_dir/asound.h | \
+grep "^#define[\t ]\+SNDRV_CTL_IOCTL_" $header_dir/asound.h | \
 	sed -r 's/^#define +SNDRV_CTL_IOCTL_([A-Z0-9_]+)[\t ]+_IO[RW]*\( *.U., *(0x[[:xdigit:]]+),?.*/\t[\2] = \"\1\",/g'
 printf "};\n"

tools/perf/trace/beauty/sndrv_pcm_ioctl.sh

 #!/bin/sh
 
-sound_header_dir=$1
+[ $# -eq 1 ] && header_dir=$1 || header_dir=tools/include/uapi/sound/
 
 printf "static const char *sndrv_pcm_ioctl_cmds[] = {\n"
-grep "^#define[\t ]\+SNDRV_PCM_IOCTL_" $sound_header_dir/asound.h | \
+grep "^#define[\t ]\+SNDRV_PCM_IOCTL_" $header_dir/asound.h | \
 	sed -r 's/^#define +SNDRV_PCM_IOCTL_([A-Z0-9_]+)[\t ]+_IO[RW]*\( *.A., *(0x[[:xdigit:]]+),?.*/\t[\2] = \"\1\",/g'
 printf "};\n"

tools/perf/trace/beauty/vhost_virtio_ioctl.sh

 #!/bin/sh
 
-vhost_virtio_header_dir=$1
+[ $# -eq 1 ] && header_dir=$1 || header_dir=tools/include/uapi/linux/
 
 printf "static const char *vhost_virtio_ioctl_cmds[] = {\n"
 regex='^#[[:space:]]*define[[:space:]]+VHOST_(\w+)[[:space:]]+_IOW?\([[:space:]]*VHOST_VIRTIO[[:space:]]*,[[:space:]]*(0x[[:xdigit:]]+).*'
-egrep $regex ${vhost_virtio_header_dir}/vhost.h | \
+egrep $regex ${header_dir}/vhost.h | \
 	sed -r "s/$regex/\2 \1/g"	| \
 	sort | xargs printf "\t[%s] = \"%s\",\n"
 printf "};\n"
 
 printf "static const char *vhost_virtio_ioctl_read_cmds[] = {\n"
 regex='^#[[:space:]]*define[[:space:]]+VHOST_(\w+)[[:space:]]+_IOW?R\([[:space:]]*VHOST_VIRTIO[[:space:]]*,[[:space:]]*(0x[[:xdigit:]]+).*'
-egrep $regex ${vhost_virtio_header_dir}/vhost.h | \
+egrep $regex ${header_dir}/vhost.h | \
 	sed -r "s/$regex/\2 \1/g"	| \
 	sort | xargs printf "\t[%s] = \"%s\",\n"
 printf "};\n"