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Make enable of disk cache statistics code configurable.

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* configure.ac: --enable-cache-stats added.
* config.h.in (DISK_CACHE_STATS): New define.
* grub-core/Makefile.core.def (cacheinfo): New command.
* include/grub/disk.h(grub_disk_cache_get_performance): New function.
* grub-core/commands/cacheinfo.c: New file.
* grub-core/commands/minicmd.c (grub_rescue_cmd_info): Updated and
moved to cacheinfo.c.
* grub-core/kern/disk.c: Use DISK_CACHE_STATS to disable disk cache
debug code.
* include/grub/disk.h: Likewise.
This commit is contained in:
Szymon Janc 2011-08-19 21:28:09 +02:00
commit b526cbb6fa
8 changed files with 106 additions and 23 deletions
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6
grub-core/kern/disk.c
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@ -46,7 +46,7 @@ static struct grub_disk_cache grub_disk_cache_table[GRUB_DISK_CACHE_NUM];
void (*grub_disk_firmware_fini) (void);
int grub_disk_firmware_is_tainted;
#if 0
#if DISK_CACHE_STATS
static unsigned long grub_disk_cache_hits;
static unsigned long grub_disk_cache_misses;
@ -119,13 +119,13 @@ grub_disk_cache_fetch (unsigned long dev_id, unsigned long disk_id,
&& cache->sector == sector)
{
cache->lock = 1;
#if 0
#if DISK_CACHE_STATS
grub_disk_cache_hits++;
#endif
return cache->data;
}
#if 0
#if DISK_CACHE_STATS
grub_disk_cache_misses++;
#endif