diff options
| author | stanley lieber <stanley.lieber@gmail.com> | 2014-02-28 00:27:32 -0500 |
|---|---|---|
| committer | stanley lieber <stanley.lieber@gmail.com> | 2014-02-28 00:27:32 -0500 |
| commit | d8035a86f77b7351ebdea9bad0ba77593b84ed76 (patch) | |
| tree | 50cc15002b0b556c38c22051ae2e07a77d4c81f5 /sys/src/9/bcm | |
| parent | fd112b949f8843146ba40bc7c95688acc97bd899 (diff) | |
bcm kernel: add *kernelpercent option for cmdline.txt
Diffstat (limited to 'sys/src/9/bcm')
| -rw-r--r-- | sys/src/9/bcm/main.c | 24 |
1 files changed, 20 insertions, 4 deletions
diff --git a/sys/src/9/bcm/main.c b/sys/src/9/bcm/main.c index 9afe84b1a..3382bd397 100644 --- a/sys/src/9/bcm/main.c +++ b/sys/src/9/bcm/main.c @@ -425,11 +425,16 @@ userinit(void) void confinit(void) { - int i; + int i, userpcnt; ulong kpages; uintptr pa; char *p; + if(p = getconf("*kernelpercent")) + userpcnt = 100 - strtol(p, 0, 0); + else + userpcnt = 0; + if(0 && (p = getconf("service")) != nil){ if(strcmp(p, "cpu") == 0) cpuserver = 1; @@ -465,8 +470,19 @@ confinit(void) conf.npage += conf.mem[i].npage; } - conf.upages = (conf.npage*80)/100; - conf.ialloc = ((conf.npage-conf.upages)/2)*BY2PG; + if(userpcnt < 10) + userpcnt = 60 + cpuserver*10; + kpages = conf.npage - (conf.npage*userpcnt)/100; + + /* + * can't go past the end of virtual memory + * (ulong)-KZERO is 2^32 - KZERO + */ + if(kpages > ((ulong)-KZERO)/BY2PG) + kpages = ((ulong)-KZERO)/BY2PG; + + conf.upages = conf.npage - kpages; + conf.ialloc = (kpages/2)*BY2PG; /* only one processor */ conf.nmach = 1; @@ -494,7 +510,7 @@ confinit(void) + conf.nproc*sizeof(Proc) + conf.nimage*sizeof(Image) + conf.nswap - + conf.nswppo*sizeof(Page); + + conf.nswppo*sizeof(Page*); mainmem->maxsize = kpages; if(!cpuserver) /* |