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drm/vmwgfx: Add a mksstat counter for cotable resizes

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There's been a lot of cotable resizes on startup which we can track
by adding a mks stat to measure both the invocation count and
time spent doing cotable resizes.

This is only used if kernel is configured with CONFIG_DRM_VMWGFX_MKSSTATS
The stats are collected on the host size inside the vmware-stats.log
file.

Signed-off-by: Zack Rusin <zackr@vmware.com>
Reviewed-by: Michael Banack <banackm@vmware.com>
Reviewed-by: Martin Krastev <krastevm@vmware.com>
Reviewed-by: Maaz Mombasawala <mombasawalam@vmware.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221022040236.616490-16-zack@kde.org
This commit is contained in:
Zack Rusin
2022-10-22 00:02:34 -04:00
parent 2e10cdc6e8
commit 4bb50606cb
3 changed files with 22 additions and 9 deletions
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16
drivers/gpu/drm/vmwgfx/vmwgfx_msg.c
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@@ -85,7 +85,14 @@ struct rpc_channel {
u32 cookie_low;
};
#if IS_ENABLED(CONFIG_DRM_VMWGFX_MKSSTATS)
/* Kernel mksGuestStats counter names and desciptions; same order as enum mksstat_kern_stats_t */
static const char* const mksstat_kern_name_desc[MKSSTAT_KERN_COUNT][2] =
{
{ "vmw_execbuf_ioctl", "vmw_execbuf_ioctl" },
{ "vmw_cotable_resize", "vmw_cotable_resize" },
};
#endif
/**
* vmw_open_channel
@@ -695,12 +702,6 @@ static inline void hypervisor_ppn_remove(PPN64 pfn)
/* Header to the text description of mksGuestStat instance descriptor */
#define MKSSTAT_KERNEL_DESCRIPTION "vmwgfx"
/* Kernel mksGuestStats counter names and desciptions; same order as enum mksstat_kern_stats_t */
static const char* const mksstat_kern_name_desc[MKSSTAT_KERN_COUNT][2] =
{
{ "vmw_execbuf_ioctl", "vmw_execbuf_ioctl" },
};
/**
* mksstat_init_record: Initializes an MKSGuestStatCounter-based record
* for the respective mksGuestStat index.
@@ -786,6 +787,7 @@ static int mksstat_init_kern_id(struct page **ppage)
/* Set up all kernel-internal counters and corresponding structures */
pstrs_acc = pstrs;
pstrs_acc = mksstat_init_record_time(MKSSTAT_KERN_EXECBUF, pstat, pinfo, pstrs_acc);
pstrs_acc = mksstat_init_record_time(MKSSTAT_KERN_COTABLE_RESIZE, pstat, pinfo, pstrs_acc);
/* Add new counters above, in their order of appearance in mksstat_kern_stats_t */