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| author | Alfredo Dal'Ava Junior <alfredo@FreeBSD.org> | 2020-04-15 20:33:09 +0000 |
|---|---|---|
| committer | Alfredo Dal'Ava Junior <alfredo@FreeBSD.org> | 2020-04-15 20:33:09 +0000 |
| commit | d80a9248224e8f80d9b4798297e6151e6d37ac87 (patch) | |
| tree | 5712b0d328bc37a0bba7b2953ec35b5414447f79 /sys/powerpc/aim | |
| parent | 3076591b7a92f9359d297bef555f4f9f62e9d8f7 (diff) | |
| download | src-d80a9248224e8f80d9b4798297e6151e6d37ac87.tar.gz src-d80a9248224e8f80d9b4798297e6151e6d37ac87.zip | |
powerpc: autosize bpvo based on physical memory
Default moea64_bpvo_pool_size 327680 was insufficient for initial
memory mapping at boot time on systems with, for example, 64G and
no huge pages enabled.
Submitted by: Andre Silva <afscoelho@gmail.com>
Reviewed by: jhibbits, alfredo
Approved by: jhibbits (mentor)
Sponsored by: Eldorado Research Institute (eldorado.org.br)
Differential Revision: https://reviews.freebsd.org/D24102
Notes
Notes:
svn path=/head/; revision=359992
Diffstat (limited to 'sys/powerpc/aim')
| -rw-r--r-- | sys/powerpc/aim/mmu_oea64.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/sys/powerpc/aim/mmu_oea64.c b/sys/powerpc/aim/mmu_oea64.c index 3bb0880978de..82d38d2f70ea 100644 --- a/sys/powerpc/aim/mmu_oea64.c +++ b/sys/powerpc/aim/mmu_oea64.c @@ -65,6 +65,7 @@ __FBSDID("$FreeBSD$"); #include <sys/systm.h> #include <sys/vmmeter.h> #include <sys/smp.h> +#include <sys/reboot.h> #include <sys/kdb.h> @@ -184,10 +185,12 @@ uma_zone_t moea64_pvo_zone; /* zone for pvo entries */ static struct pvo_entry *moea64_bpvo_pool; static int moea64_bpvo_pool_index = 0; -static int moea64_bpvo_pool_size = 327680; +static int moea64_bpvo_pool_size = 0; SYSCTL_INT(_machdep, OID_AUTO, moea64_allocated_bpvo_entries, CTLFLAG_RD, &moea64_bpvo_pool_index, 0, ""); +#define BPVO_POOL_SIZE 327680 /* Sensible historical default value */ +#define BPVO_POOL_EXPANSION_FACTOR 3 #define VSID_NBPW (sizeof(u_int32_t) * 8) #ifdef __powerpc64__ #define NVSIDS (NPMAPS * 16) @@ -916,6 +919,20 @@ moea64_mid_bootstrap(mmu_t mmup, vm_offset_t kernelstart, vm_offset_t kernelend) * Initialise the bootstrap pvo pool. */ TUNABLE_INT_FETCH("machdep.moea64_bpvo_pool_size", &moea64_bpvo_pool_size); + if (moea64_bpvo_pool_size == 0) { + if (!hw_direct_map) + moea64_bpvo_pool_size = ((ptoa((uintmax_t)physmem) * sizeof(struct vm_page)) / + (PAGE_SIZE * PAGE_SIZE)) * BPVO_POOL_EXPANSION_FACTOR; + else + moea64_bpvo_pool_size = BPVO_POOL_SIZE; + } + + if (boothowto & RB_VERBOSE) { + printf("mmu_oea64: bpvo pool entries = %d, bpvo pool size = %ju MB\n", + moea64_bpvo_pool_size, + moea64_bpvo_pool_size*sizeof(struct pvo_entry) / 1048576); + } + moea64_bpvo_pool = (struct pvo_entry *)moea64_bootstrap_alloc( moea64_bpvo_pool_size*sizeof(struct pvo_entry), PAGE_SIZE); moea64_bpvo_pool_index = 0; |