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powerpc: Move default hash table size calculation to hash_utils_64.c

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We weren't computing the size of the hash table correctly on iSeries
because the relevant code in prom.c was #ifdef CONFIG_PPC_PSERIES.
This moves the code to hash_utils_64.c, makes it unconditional, and
cleans it up a bit.

Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Paul Mackerras
2005-10-12 16:58:53 +10:00
parent b6ec995a21
commit 3eac8c69d1
2 changed files with 22 additions and 21 deletions
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20
arch/powerpc/kernel/prom.c
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@@ -1323,26 +1323,6 @@ void __init early_init_devtree(void *params)
*/
scan_flat_dt(early_init_dt_scan_cpus, NULL);
#ifdef CONFIG_PPC_PSERIES
/* If hash size wasn't obtained above, we calculate it now based on
* the total RAM size
*/
if (ppc64_pft_size == 0) {
unsigned long rnd_mem_size, pteg_count;
/* round mem_size up to next power of 2 */
rnd_mem_size = 1UL << __ilog2(systemcfg->physicalMemorySize);
if (rnd_mem_size < systemcfg->physicalMemorySize)
rnd_mem_size <<= 1;
/* # pages / 2 */
pteg_count = max(rnd_mem_size >> (12 + 1), 1UL << 11);
ppc64_pft_size = __ilog2(pteg_count << 7);
}
DBG("Hash pftSize: %x\n", (int)ppc64_pft_size);
#endif
DBG(" <- early_init_devtree()\n");
}