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cacheinfo: add i/d cache_linesize_log

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Signed-off-by: Emilio G. Cota <cota@braap.org>
Message-Id: <20180910232752.31565-2-cota@braap.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Emilio G. Cota 2018-09-10 19:27:41 -04:00 committed by Paolo Bonzini
parent 87a09cdc52
commit 5fe2103429
2 changed files with 10 additions and 0 deletions
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2
include/qemu/osdep.h
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@ -570,6 +570,8 @@ extern uintptr_t qemu_real_host_page_size;
extern intptr_t qemu_real_host_page_mask; extern intptr_t qemu_real_host_page_mask;
extern int qemu_icache_linesize; extern int qemu_icache_linesize;
extern int qemu_icache_linesize_log;
extern int qemu_dcache_linesize; extern int qemu_dcache_linesize;
extern int qemu_dcache_linesize_log;
#endif #endif

8
util/cacheinfo.c
View File

@ -7,9 +7,12 @@
*/ */
#include "qemu/osdep.h" #include "qemu/osdep.h"
#include "qemu/host-utils.h"
int qemu_icache_linesize = 0; int qemu_icache_linesize = 0;
int qemu_icache_linesize_log;
int qemu_dcache_linesize = 0; int qemu_dcache_linesize = 0;
int qemu_dcache_linesize_log;
/* /*
* Operating system specific detection mechanisms. * Operating system specific detection mechanisms.
@ -172,6 +175,11 @@ static void __attribute__((constructor)) init_cache_info(void)
arch_cache_info(&isize, &dsize); arch_cache_info(&isize, &dsize);
fallback_cache_info(&isize, &dsize); fallback_cache_info(&isize, &dsize);
assert((isize & (isize - 1)) == 0);
assert((dsize & (dsize - 1)) == 0);
qemu_icache_linesize = isize; qemu_icache_linesize = isize;
qemu_icache_linesize_log = ctz32(isize);
qemu_dcache_linesize = dsize; qemu_dcache_linesize = dsize;
qemu_dcache_linesize_log = ctz32(dsize);
} }