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Date:   Tue, 28 May 2019 09:53:03 -0300
From:   Arnaldo Carvalho de Melo <acme@...hat.com>
To:     Lionel Landwerlin <lionel.g.landwerlin@...el.com>
Cc:     Arnaldo Carvalho de Melo <acme@...nel.org>,
        Ingo Molnar <mingo@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Jiri Olsa <jolsa@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        Clark Williams <williams@...hat.com>,
        linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org,
        Adrian Hunter <adrian.hunter@...el.com>,
        Brendan Gregg <brendan.d.gregg@...il.com>,
        Christian König <christian.koenig@....com>,
        Chunming Zhou <david1.zhou@....com>,
        Dave Airlie <airlied@...hat.com>,
        Luis Cláudio Gonçalves <lclaudio@...hat.com>
Subject: Re: [PATCH 25/44] tools headers UAPI: Sync drm/drm.h with the kernel

Em Tue, May 28, 2019 at 09:07:03AM +0100, Lionel Landwerlin escreveu:
> On 27/05/2019 23:37, Arnaldo Carvalho de Melo wrote:
> >From: Arnaldo Carvalho de Melo <acme@...hat.com>
> >
> >To pick up the changes in these csets:
> >
> >   060cebb20cdb ("drm: introduce a capability flag for syncobj timeline support")
> >   50d1ebef79ef ("drm/syncobj: add timeline signal ioctl for syncobj v5")
> >   ea569910cbab ("drm/syncobj: add transition iotcls between binary and timeline v2")
> >   27b575a9aa2f ("drm/syncobj: add timeline payload query ioctl v6")
> >   01d6c3578379 ("drm/syncobj: add support for timeline point wait v8")
> >   783195ec1cad ("drm/syncobj: disable the timeline UAPI for now v2")
> >   48197bc564c7 ("drm: add syncobj timeline support v9")
> >
> >Which automagically results in the following new ioctls being recognized
> >by the 'perf trace' ioctl cmd arg beautifier:
> >
> >   $ tools/perf/trace/beauty/drm_ioctl.sh > /tmp/before
> >   $ cp include/uapi/drm/drm.h tools/include/uapi/drm/drm.h
> >   $ tools/perf/trace/beauty/drm_ioctl.sh > /tmp/after
> >   $ diff -u /tmp/before /tmp/after
> >   --- /tmp/before	2019-05-22 10:25:31.443151182 -0300
> >   +++ /tmp/after	2019-05-22 10:25:46.449354819 -0300
> >   @@ -103,6 +103,10 @@
> >    	[0xC7] = "MODE_LIST_LESSEES",
> >    	[0xC8] = "MODE_GET_LEASE",
> >    	[0xC9] = "MODE_REVOKE_LEASE",
> >   +	[0xCA] = "SYNCOBJ_TIMELINE_WAIT",
> >   +	[0xCB] = "SYNCOBJ_QUERY",
> >   +	[0xCC] = "SYNCOBJ_TRANSFER",
> >   +	[0xCD] = "SYNCOBJ_TIMELINE_SIGNAL",
> >    	[DRM_COMMAND_BASE + 0x00] = "I915_INIT",
> >    	[DRM_COMMAND_BASE + 0x01] = "I915_FLUSH",
> >    	[DRM_COMMAND_BASE + 0x02] = "I915_FLIP",
> >     $
> >
> >I.e. the strace like raw_tracepoint:sys_enter handler in 'perf trace'
> >will get the cmd integer value and map it to the string.
> >
> >At some point it should be possible to translate from string to integer
> >and use to filter using expressions such as:
> >
> >    # perf trace -e ioctl/cmd==DRM_IOCTL_SYNCOBJ*/
> >
> >Or some more suitable syntax to express that only these ioctls when
> >acting on DRM fds should be shown.
> >
> >Cc: Adrian Hunter <adrian.hunter@...el.com>
> >Cc: Brendan Gregg <brendan.d.gregg@...il.com>
> >Cc: Christian König <christian.koenig@....com>
> >Cc: Chunming Zhou <david1.zhou@....com>
> >Cc: Dave Airlie <airlied@...hat.com>
> >Cc: Jiri Olsa <jolsa@...nel.org>
> >Cc: Lionel Landwerlin <lionel.g.landwerlin@...el.com>
> >Cc: Luis Cláudio Gonçalves <lclaudio@...hat.com>
> >Cc: Namhyung Kim <namhyung@...nel.org>
> >Link: https://lkml.kernel.org/n/tip-jrc9ogw33w4zgqc3pu7o1l3g@git.kernel.org
> >Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
> 
> 
> Acked-by: Lionel Landwerlin <lionel.g.landwerlin@...el.com>

Thank, added since I'll have to resubmit this branch.

- Arnaldo
 
> 
> >---
> >  tools/include/uapi/drm/drm.h | 37 ++++++++++++++++++++++++++++++++++++
> >  1 file changed, 37 insertions(+)
> >
> >diff --git a/tools/include/uapi/drm/drm.h b/tools/include/uapi/drm/drm.h
> >index 300f336633f2..661d73f9a919 100644
> >--- a/tools/include/uapi/drm/drm.h
> >+++ b/tools/include/uapi/drm/drm.h
> >@@ -649,6 +649,7 @@ struct drm_gem_open {
> >  #define DRM_CAP_PAGE_FLIP_TARGET	0x11
> >  #define DRM_CAP_CRTC_IN_VBLANK_EVENT	0x12
> >  #define DRM_CAP_SYNCOBJ		0x13
> >+#define DRM_CAP_SYNCOBJ_TIMELINE	0x14
> >  /** DRM_IOCTL_GET_CAP ioctl argument type */
> >  struct drm_get_cap {
> >@@ -735,8 +736,18 @@ struct drm_syncobj_handle {
> >  	__u32 pad;
> >  };
> >+struct drm_syncobj_transfer {
> >+	__u32 src_handle;
> >+	__u32 dst_handle;
> >+	__u64 src_point;
> >+	__u64 dst_point;
> >+	__u32 flags;
> >+	__u32 pad;
> >+};
> >+
> >  #define DRM_SYNCOBJ_WAIT_FLAGS_WAIT_ALL (1 << 0)
> >  #define DRM_SYNCOBJ_WAIT_FLAGS_WAIT_FOR_SUBMIT (1 << 1)
> >+#define DRM_SYNCOBJ_WAIT_FLAGS_WAIT_AVAILABLE (1 << 2) /* wait for time point to become available */
> >  struct drm_syncobj_wait {
> >  	__u64 handles;
> >  	/* absolute timeout */
> >@@ -747,12 +758,33 @@ struct drm_syncobj_wait {
> >  	__u32 pad;
> >  };
> >+struct drm_syncobj_timeline_wait {
> >+	__u64 handles;
> >+	/* wait on specific timeline point for every handles*/
> >+	__u64 points;
> >+	/* absolute timeout */
> >+	__s64 timeout_nsec;
> >+	__u32 count_handles;
> >+	__u32 flags;
> >+	__u32 first_signaled; /* only valid when not waiting all */
> >+	__u32 pad;
> >+};
> >+
> >+
> >  struct drm_syncobj_array {
> >  	__u64 handles;
> >  	__u32 count_handles;
> >  	__u32 pad;
> >  };
> >+struct drm_syncobj_timeline_array {
> >+	__u64 handles;
> >+	__u64 points;
> >+	__u32 count_handles;
> >+	__u32 pad;
> >+};
> >+
> >+
> >  /* Query current scanout sequence number */
> >  struct drm_crtc_get_sequence {
> >  	__u32 crtc_id;		/* requested crtc_id */
> >@@ -909,6 +941,11 @@ extern "C" {
> >  #define DRM_IOCTL_MODE_GET_LEASE	DRM_IOWR(0xC8, struct drm_mode_get_lease)
> >  #define DRM_IOCTL_MODE_REVOKE_LEASE	DRM_IOWR(0xC9, struct drm_mode_revoke_lease)
> >+#define DRM_IOCTL_SYNCOBJ_TIMELINE_WAIT	DRM_IOWR(0xCA, struct drm_syncobj_timeline_wait)
> >+#define DRM_IOCTL_SYNCOBJ_QUERY		DRM_IOWR(0xCB, struct drm_syncobj_timeline_array)
> >+#define DRM_IOCTL_SYNCOBJ_TRANSFER	DRM_IOWR(0xCC, struct drm_syncobj_transfer)
> >+#define DRM_IOCTL_SYNCOBJ_TIMELINE_SIGNAL	DRM_IOWR(0xCD, struct drm_syncobj_timeline_array)
> >+
> >  /**
> >   * Device specific ioctls should only be in their respective headers
> >   * The device specific ioctl range is from 0x40 to 0x9f.
> 

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