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util/tc: add a util function for setting bytes_mapped_limit

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tc drivers set this based on os_get_total_physical_memory()/divisor,
which is going to be totally wrong for 32bit processes and explode
the address space

this util function can be used to handle per-platform clamping

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11853>
This commit is contained in:
Mike Blumenkrantz 2021-07-14 13:43:13 -04:00 • committed by Marge Bot
parent 3db856689d
commit 671d579b46
2 changed files with 14 additions and 0 deletions
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11
src/gallium/auxiliary/util/u_threaded_context.c
View file

@ -4207,3 +4207,14 @@ fail:
tc_destroy(&tc->base);
return NULL;
}
void
threaded_context_init_bytes_mapped_limit(struct threaded_context *tc, unsigned divisor)
{
uint64_t total_ram;
if (os_get_total_physical_memory(&total_ram)) {
tc->bytes_mapped_limit = total_ram / divisor;
if (sizeof(void*) == 4)
tc->bytes_mapped_limit = MIN2(tc->bytes_mapped_limit, 512*1024*1024UL);
}
}

3
src/gallium/auxiliary/util/u_threaded_context.h
View file

@ -504,6 +504,9 @@ threaded_context_create(struct pipe_context *pipe,
bool driver_calls_flush_notify,
struct threaded_context **out);
void
threaded_context_init_bytes_mapped_limit(struct threaded_context *tc, unsigned divisor);
void
threaded_context_flush(struct pipe_context *_pipe,
struct tc_unflushed_batch_token *token,