perf trace beautify ioctl: Beautify sound ioctl's 'cmd' arg

This time we try a new approach, using a copy of uapi/sound/asound.h we
auto generate the string tables, then include it in the ioctl cmd
beautifier.

This way either the sound developers will add the new commands to the
tools/ copy, like is happening with other areas of tools/include/ (bpf.h
comes to mind), or we'll be notified when building perf that our copy
drifted.

E.g.:

  # perf trace -p 22084 -e ioctl 2>&1 | head -5
     0.000 ( 0.068 ms): alsa-sink-ALC3/22084 ioctl(fd: 49</dev/snd/pcmC1D0p>, cmd: SNDRV_PCM_HWSYNC, arg: 0x557f8d7fa0f0) = 0
     0.344 ( 0.041 ms): alsa-sink-ALC3/22084 ioctl(fd: 46</dev/snd/controlC1>, cmd: SNDRV_CTL_ELEM_READ, arg: 0x7fe764018ee0) = 0
     0.403 ( 0.011 ms): alsa-sink-ALC3/22084 ioctl(fd: 49</dev/snd/pcmC1D0p>, cmd: SNDRV_PCM_HWSYNC, arg: 0x557f8d7fa0f0) = 0
     0.427 ( 0.009 ms): alsa-sink-ALC3/22084 ioctl(fd: 49</dev/snd/pcmC1D0p>, cmd: SNDRV_PCM_STATUS_EXT, arg: 0x7fe76c2e0b30) = 0
     2.461 ( 0.042 ms): alsa-sink-ALC3/22084 ioctl(fd: 49</dev/snd/pcmC1D0p>, cmd: SNDRV_PCM_HWSYNC, arg: 0x557f8d7fa0f0) = 0
  #

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: http://lkml.kernel.org/n/tip-8zuyf3e3u6jjcb2xzerw0kdi@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 26 insertions, 2 deletions

diff --git a/tools/perf/trace/beauty/ioctl.c b/tools/perf/trace/beauty/ioctl.c
index 732489d141c4..ec5a5a499667 100644
--- a/tools/perf/trace/beauty/ioctl.c
+++ b/tools/perf/trace/beauty/ioctl.c
@@ -55,6 +55,28 @@ static size_t ioctl__scnprintf_drm_cmd(int nr, char *bf, size_t size)
 	return scnprintf(bf, size, "(%#x, %#x)", 'd', nr);
 }
 
+static size_t ioctl__scnprintf_sndrv_pcm_cmd(int nr, char *bf, size_t size)
+{
+#include "trace/beauty/generated/ioctl/sndrv_pcm_ioctl_array.c"
+	static DEFINE_STRARRAY(sndrv_pcm_ioctl_cmds);
+
+	if (nr < strarray__sndrv_pcm_ioctl_cmds.nr_entries && strarray__sndrv_pcm_ioctl_cmds.entries[nr] != NULL)
+		return scnprintf(bf, size, "SNDRV_PCM_%s", strarray__sndrv_pcm_ioctl_cmds.entries[nr]);
+
+	return scnprintf(bf, size, "(%#x, %#x)", 'A', nr);
+}
+
+static size_t ioctl__scnprintf_sndrv_ctl_cmd(int nr, char *bf, size_t size)
+{
+#include "trace/beauty/generated/ioctl/sndrv_ctl_ioctl_array.c"
+	static DEFINE_STRARRAY(sndrv_ctl_ioctl_cmds);
+
+	if (nr < strarray__sndrv_ctl_ioctl_cmds.nr_entries && strarray__sndrv_ctl_ioctl_cmds.entries[nr] != NULL)
+		return scnprintf(bf, size, "SNDRV_CTL_%s", strarray__sndrv_ctl_ioctl_cmds.entries[nr]);
+
+	return scnprintf(bf, size, "(%#x, %#x)", 'U', nr);
+}
+
 static size_t ioctl__scnprintf_cmd(unsigned long cmd, char *bf, size_t size)
 {
 	int dir	 = _IOC_DIR(cmd),
@@ -66,8 +88,10 @@ static size_t ioctl__scnprintf_cmd(unsigned long cmd, char *bf, size_t size)
 		int	type;
 		size_t	(*scnprintf)(int nr, char *bf, size_t size);
 	} ioctl_types[] = { /* Must be ordered by type */
-			      { .type	= 'T', .scnprintf = ioctl__scnprintf_tty_cmd, },
-		['d' - 'T'] = { .type	= 'd', .scnprintf = ioctl__scnprintf_drm_cmd, }
+			      { .type	= 'A', .scnprintf = ioctl__scnprintf_sndrv_pcm_cmd, },
+		['T' - 'A']=  { .type	= 'T', .scnprintf = ioctl__scnprintf_tty_cmd, },
+		['U' - 'A']=  { .type	= 'U', .scnprintf = ioctl__scnprintf_sndrv_ctl_cmd, },
+		['d' - 'A'] = { .type	= 'd', .scnprintf = ioctl__scnprintf_drm_cmd, }
 	};
 	const int nr_types = ARRAY_SIZE(ioctl_types);