forked from Minki/linux
4ec37538a6
Commit f2db53f14d ("drm/i915: Replace "_load" with "_probe"
consequently") deliberately left the name of the module parameter
unchanged as that would require a corresponding change on IGT size.
Now as the IGT side change has been submitted, complete the switch to
the "probe" nomenclature.
Suggested-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Signed-off-by: Janusz Krzysztofik <janusz.krzysztofik@linux.intel.com>
Cc: Michał Wajdeczko <michal.wajdeczko@intel.com>
Cc: Michał Winiarski <michal.winiarski@intel.com>
Cc: Piotr Piórkowski <piotr.piorkowski@intel.com>
Cc: Tomasz Lis <tomasz.lis@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20191029102036.6326-3-janusz.krzysztofik@linux.intel.com
108 lines
2.5 KiB
C
108 lines
2.5 KiB
C
// SPDX-License-Identifier: MIT
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/*
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* Copyright © 2019 Intel Corporation
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*/
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#include <drm/drm_drv.h>
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#include "i915_drv.h"
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#include "i915_utils.h"
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#define FDO_BUG_URL "https://bugs.freedesktop.org/enter_bug.cgi?product=DRI"
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#define FDO_BUG_MSG "Please file a bug at " FDO_BUG_URL " against DRM/Intel " \
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"providing the dmesg log by booting with drm.debug=0xf"
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void
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__i915_printk(struct drm_i915_private *dev_priv, const char *level,
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const char *fmt, ...)
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{
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static bool shown_bug_once;
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struct device *kdev = dev_priv->drm.dev;
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bool is_error = level[1] <= KERN_ERR[1];
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bool is_debug = level[1] == KERN_DEBUG[1];
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struct va_format vaf;
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va_list args;
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if (is_debug && !(drm_debug & DRM_UT_DRIVER))
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return;
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va_start(args, fmt);
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vaf.fmt = fmt;
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vaf.va = &args;
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if (is_error)
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dev_printk(level, kdev, "%pV", &vaf);
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else
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dev_printk(level, kdev, "[" DRM_NAME ":%ps] %pV",
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__builtin_return_address(0), &vaf);
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va_end(args);
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if (is_error && !shown_bug_once) {
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/*
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* Ask the user to file a bug report for the error, except
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* if they may have caused the bug by fiddling with unsafe
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* module parameters.
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*/
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if (!test_taint(TAINT_USER))
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dev_notice(kdev, "%s", FDO_BUG_MSG);
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shown_bug_once = true;
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}
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}
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#if IS_ENABLED(CONFIG_DRM_I915_DEBUG)
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static unsigned int i915_probe_fail_count;
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int __i915_inject_probe_error(struct drm_i915_private *i915, int err,
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const char *func, int line)
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{
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if (i915_probe_fail_count >= i915_modparams.inject_probe_failure)
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return 0;
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if (++i915_probe_fail_count < i915_modparams.inject_probe_failure)
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return 0;
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__i915_printk(i915, KERN_INFO,
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"Injecting failure %d at checkpoint %u [%s:%d]\n",
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err, i915_modparams.inject_probe_failure, func, line);
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i915_modparams.inject_probe_failure = 0;
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return err;
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}
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bool i915_error_injected(void)
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{
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return i915_probe_fail_count && !i915_modparams.inject_probe_failure;
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}
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#endif
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void cancel_timer(struct timer_list *t)
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{
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if (!READ_ONCE(t->expires))
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return;
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del_timer(t);
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WRITE_ONCE(t->expires, 0);
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}
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void set_timer_ms(struct timer_list *t, unsigned long timeout)
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{
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if (!timeout) {
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cancel_timer(t);
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return;
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}
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timeout = msecs_to_jiffies_timeout(timeout);
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/*
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* Paranoia to make sure the compiler computes the timeout before
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* loading 'jiffies' as jiffies is volatile and may be updated in
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* the background by a timer tick. All to reduce the complexity
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* of the addition and reduce the risk of losing a jiffie.
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*/
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barrier();
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mod_timer(t, jiffies + timeout);
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}
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