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#ifndef CPUS_H
#define CPUS_H

#include <unistd.h>
#include "built_in.h"
#include "die.h"

static inline unsigned int get_number_cpus(void)
{
	int ret = sysconf(_SC_NPROCESSORS_CONF);

	if (unlikely(ret <= 0))
		panic("get_number_cpus error!\n");

	return ret;
}

static inline unsigned int get_number_cpus_online(void)
{
	int ret = sysconf(_SC_NPROCESSORS_ONLN);

	if (unlikely(ret <= 0))
		panic("get_number_cpus_online error!\n");

	return ret;
}

#endif /* CPUS_H */
8b parentd243ad820295d1c499f9256f8ef04d1d36e74e34 (diff)
drm/i915: Fallback to single page pwrite/pread if unable to release fence
If we cannot release the fence (for example if someone is inexplicably trying to write into a tiled framebuffer that is currently pinned to the display! *cough* kms_frontbuffer_tracking *cough*) fallback to using the page-by-page pwrite/pread interface, rather than fail the syscall entirely. Since this is triggerable by the user (along pwrite) we have to remove the WARN_ON(fence->pin_count). Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20160818161718.27187-6-chris@chris-wilson.co.uk
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