Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752192AbdHAT6I (ORCPT ); Tue, 1 Aug 2017 15:58:08 -0400 Received: from mail.kernel.org ([198.145.29.99]:58904 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752129AbdHAT6C (ORCPT ); Tue, 1 Aug 2017 15:58:02 -0400 DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1F7A122DA6 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=acme@kernel.org From: Arnaldo Carvalho de Melo To: Ingo Molnar Cc: linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, Arnaldo Carvalho de Melo , Adrian Hunter , David Ahern , Jiri Olsa , Namhyung Kim , Paolo Bonzini , =?UTF-8?q?Radim=20Kr=C4=8Dm=C3=A1=C5=99?= , Wang Nan Subject: [PATCH 15/18] perf trace beauty ioctl: Pass _IOC_DIR to the per _IOC_TYPE scnprintf Date: Tue, 1 Aug 2017 16:56:42 -0300 Message-Id: <20170801195645.16986-16-acme@kernel.org> X-Mailer: git-send-email 2.9.4 In-Reply-To: <20170801195645.16986-1-acme@kernel.org> References: <20170801195645.16986-1-acme@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 6168 Lines: 137 From: Arnaldo Carvalho de Melo Not all subsystems use the fact that we may have the same _IOC_NR for different _IOC_DIR, as in the end it'll result in a different ioctl number. So, for instance, vhost virtio has: #define VHOST_GET_FEATURES _IOR(VHOST_VIRTIO, 0x00, __u64) #define VHOST_SET_FEATURES _IOW(VHOST_VIRTIO, 0x00, __u64) So same _IOC_NR (0x00) but different _IOC_DIR (R versus W), but it also have: #define VHOST_SET_VRING_ENDIAN _IOW(VHOST_VIRTIO, 0x13, struct vhost_vring_state) #define VHOST_GET_VRING_ENDIAN _IOW(VHOST_VIRTIO, 0x14, struct vhost_vring_state) A "get" operation that uses a "W" _IOC_DIR, and its implementation, uses copy_to_user, it should've probably been _IOR(). Then: /* Base value where queue looks for available descriptors */ #define VHOST_SET_VRING_BASE _IOW(VHOST_VIRTIO, 0x12, struct vhost_vring_state) /* Get accessor: reads index, writes value in num */ #define VHOST_GET_VRING_BASE _IOWR(VHOST_VIRTIO, 0x12, struct vhost_vring_state) So we'll need to use _IOC_DIR() to disambiguate the VHOST_VIRTIO ioctl bautifier. Cc: Adrian Hunter Cc: David Ahern Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paolo Bonzini Cc: Radim Krčmář Cc: Wang Nan Link: http://lkml.kernel.org/n/tip-rq6q717ql7j2z7kuccafgq84@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/trace/beauty/ioctl.c | 24 ++++++++++++------------ 1 file changed, 12 insertions(+), 12 deletions(-) diff --git a/tools/perf/trace/beauty/ioctl.c b/tools/perf/trace/beauty/ioctl.c index 89fa4eb68247..8633d96ed131 100644 --- a/tools/perf/trace/beauty/ioctl.c +++ b/tools/perf/trace/beauty/ioctl.c @@ -19,7 +19,7 @@ */ #include -static size_t ioctl__scnprintf_tty_cmd(int nr, char *bf, size_t size) +static size_t ioctl__scnprintf_tty_cmd(int nr, int dir, char *bf, size_t size) { static const char *ioctl_tty_cmd[] = { "TCGETS", "TCSETS", "TCSETSW", "TCSETSF", "TCGETA", "TCSETA", "TCSETAW", @@ -41,10 +41,10 @@ static size_t ioctl__scnprintf_tty_cmd(int nr, char *bf, size_t size) if (nr < strarray__ioctl_tty_cmd.nr_entries && strarray__ioctl_tty_cmd.entries[nr] != NULL) return scnprintf(bf, size, "%s", strarray__ioctl_tty_cmd.entries[nr]); - return scnprintf(bf, size, "(%#x, %#x)", 'T', nr); + return scnprintf(bf, size, "(%#x, %#x, %#x)", 'T', nr, dir); } -static size_t ioctl__scnprintf_drm_cmd(int nr, char *bf, size_t size) +static size_t ioctl__scnprintf_drm_cmd(int nr, int dir, char *bf, size_t size) { #include "trace/beauty/generated/ioctl/drm_ioctl_array.c" static DEFINE_STRARRAY(drm_ioctl_cmds); @@ -52,10 +52,10 @@ static size_t ioctl__scnprintf_drm_cmd(int nr, char *bf, size_t size) if (nr < strarray__drm_ioctl_cmds.nr_entries && strarray__drm_ioctl_cmds.entries[nr] != NULL) return scnprintf(bf, size, "DRM_%s", strarray__drm_ioctl_cmds.entries[nr]); - return scnprintf(bf, size, "(%#x, %#x)", 'd', nr); + return scnprintf(bf, size, "(%#x, %#x, %#x)", 'd', nr, dir); } -static size_t ioctl__scnprintf_sndrv_pcm_cmd(int nr, char *bf, size_t size) +static size_t ioctl__scnprintf_sndrv_pcm_cmd(int nr, int dir, char *bf, size_t size) { #include "trace/beauty/generated/ioctl/sndrv_pcm_ioctl_array.c" static DEFINE_STRARRAY(sndrv_pcm_ioctl_cmds); @@ -63,10 +63,10 @@ static size_t ioctl__scnprintf_sndrv_pcm_cmd(int nr, char *bf, size_t size) 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); + return scnprintf(bf, size, "(%#x, %#x, %#x)", 'A', nr, dir); } -static size_t ioctl__scnprintf_sndrv_ctl_cmd(int nr, char *bf, size_t size) +static size_t ioctl__scnprintf_sndrv_ctl_cmd(int nr, int dir, char *bf, size_t size) { #include "trace/beauty/generated/ioctl/sndrv_ctl_ioctl_array.c" static DEFINE_STRARRAY(sndrv_ctl_ioctl_cmds); @@ -74,10 +74,10 @@ static size_t ioctl__scnprintf_sndrv_ctl_cmd(int nr, char *bf, size_t size) 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); + return scnprintf(bf, size, "(%#x, %#x, %#x)", 'U', nr, dir); } -static size_t ioctl__scnprintf_kvm_cmd(int nr, char *bf, size_t size) +static size_t ioctl__scnprintf_kvm_cmd(int nr, int dir, char *bf, size_t size) { #include "trace/beauty/generated/ioctl/kvm_ioctl_array.c" static DEFINE_STRARRAY(kvm_ioctl_cmds); @@ -85,7 +85,7 @@ static size_t ioctl__scnprintf_kvm_cmd(int nr, char *bf, size_t size) if (nr < strarray__kvm_ioctl_cmds.nr_entries && strarray__kvm_ioctl_cmds.entries[nr] != NULL) return scnprintf(bf, size, "KVM_%s", strarray__kvm_ioctl_cmds.entries[nr]); - return scnprintf(bf, size, "(%#x, %#x)", 0xAE, nr); + return scnprintf(bf, size, "(%#x, %#x, %#x)", 0xAE, nr, dir); } static size_t ioctl__scnprintf_cmd(unsigned long cmd, char *bf, size_t size) @@ -97,7 +97,7 @@ static size_t ioctl__scnprintf_cmd(unsigned long cmd, char *bf, size_t size) int printed = 0; static const struct ioctl_type { int type; - size_t (*scnprintf)(int nr, char *bf, size_t size); + size_t (*scnprintf)(int nr, int dir, char *bf, size_t size); } ioctl_types[] = { /* Must be ordered by type */ { .type = 'A', .scnprintf = ioctl__scnprintf_sndrv_pcm_cmd, }, ['T' - 'A']= { .type = 'T', .scnprintf = ioctl__scnprintf_tty_cmd, }, @@ -111,7 +111,7 @@ static size_t ioctl__scnprintf_cmd(unsigned long cmd, char *bf, size_t size) const int index = type - ioctl_types[0].type; if (ioctl_types[index].scnprintf != NULL) - return ioctl_types[index].scnprintf(nr, bf, size); + return ioctl_types[index].scnprintf(nr, dir, bf, size); } printed += scnprintf(bf + printed, size - printed, "%c", '('); -- 2.9.4