linux-kernel - Re: [PATCH v7 6/7] drm/i915: Replace custom intel runtime_pm tracker with ref

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Message-ID: <bc7374f0-4b1c-a632-4581-9e4da0a5090f@linux.intel.com>
Date:   Sun, 23 Apr 2023 12:45:10 +0800
From:   Zhou Furong <furong.zhou@...ux.intel.com>
To:     Andrzej Hajda <andrzej.hajda@...el.com>,
        Jani Nikula <jani.nikula@...ux.intel.com>,
        Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>,
        Tvrtko Ursulin <tvrtko.ursulin@...ux.intel.com>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>
Cc:     linux-kernel@...r.kernel.org, intel-gfx@...ts.freedesktop.org,
        dri-devel@...ts.freedesktop.org,
        Chris Wilson <chris@...is-wilson.co.uk>,
        netdev@...r.kernel.org, Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Dmitry Vyukov <dvyukov@...gle.com>,
        "David S. Miller" <davem@...emloft.net>,
        Andi Shyti <andi.shyti@...ux.intel.com>
Subject: Re: [PATCH v7 6/7] drm/i915: Replace custom intel runtime_pm tracker
 with ref_tracker library



> +
> +static inline void
> +intel_wakeref_tracker_show(struct ref_tracker_dir *dir,
> +			   struct drm_printer *p)
> +{
> +	const size_t buf_size = PAGE_SIZE;
> +	char *buf, *sb, *se;
> +	size_t count;
> +
> +	buf = kmalloc(buf_size, GFP_NOWAIT);
> +	if (!buf)
> +		return;
> +
> +	count = ref_tracker_dir_snprint(dir, buf, buf_size);
> +	if (!count)
> +		goto free;
> +	/* printk does not like big buffers, so we split it */
> +	for (sb = buf; *sb; sb = se + 1) {
> +		se = strchrnul(sb, '\n');
> +		drm_printf(p, "%.*s", (int)(se - sb + 1), sb);
> +		if (!*se)
> +			break;
> +	}
> +	if (count >= buf_size)
> +		drm_printf(p, "\n...dropped %zd extra bytes of leak report.\n",
> +			   count + 1 - buf_size);
> +free:
> +	kfree(buf);
> +}
> +

move to c source?