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drm/i915/perf: Register sysctl path globally

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We do not require to register the sysctl paths per instance,
so making registration global.

v2: make sysctl path register and unregister function driver
    specific (Tvrtko and Lucas).

Cc: Sudeep Dutt <sudeep.dutt@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Venkata Sandeep Dhanalakota <venkata.s.dhanalakota@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/20191213155152.69182-1-venkata.s.dhanalakota@intel.com
This commit is contained in:
Venkata Sandeep Dhanalakota
2019-12-13 07:51:51 -08:00
committed by Chris Wilson
parent b69fa3610b
commit 3dc716fd3c
4 changed files with 23 additions and 6 deletions
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17
drivers/gpu/drm/i915/i915_perf.c
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@@ -387,6 +387,8 @@ struct i915_oa_config_bo {
struct i915_vma *vma;
};
static struct ctl_table_header *sysctl_header;
static enum hrtimer_restart oa_poll_check_timer_cb(struct hrtimer *hrtimer);
void i915_oa_config_release(struct kref *ref)
@@ -4228,7 +4230,7 @@ static struct ctl_table dev_root[] = {
};
/**
* i915_perf_init - initialize i915-perf state on module load
* i915_perf_init - initialize i915-perf state on module bind
* @i915: i915 device instance
*
* Initializes i915-perf state without exposing anything to userspace.
@@ -4345,7 +4347,6 @@ void i915_perf_init(struct drm_i915_private *i915)
oa_sample_rate_hard_limit = 1000 *
(RUNTIME_INFO(i915)->cs_timestamp_frequency_khz / 2);
perf->sysctl_header = register_sysctl_table(dev_root);
mutex_init(&perf->metrics_lock);
idr_init(&perf->metrics_idr);
@@ -4381,6 +4382,16 @@ static int destroy_config(int id, void *p, void *data)
return 0;
}
void i915_perf_sysctl_register(void)
{
sysctl_header = register_sysctl_table(dev_root);
}
void i915_perf_sysctl_unregister(void)
{
unregister_sysctl_table(sysctl_header);
}
/**
* i915_perf_fini - Counter part to i915_perf_init()
* @i915: i915 device instance
@@ -4395,8 +4406,6 @@ void i915_perf_fini(struct drm_i915_private *i915)
idr_for_each(&perf->metrics_idr, destroy_config, perf);
idr_destroy(&perf->metrics_idr);
unregister_sysctl_table(perf->sysctl_header);
memset(&perf->ops, 0, sizeof(perf->ops));
perf->i915 = NULL;
}