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am 8b448629: am 16092b7a: Merge "fs_mgr: allow for zramsize to be specified as percentage of total memory" into lmp-mr1-dev

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* commit '8b4486294053ea96ac50d8c07d4fc23729ef7c52':
  fs_mgr: allow for zramsize to be specified as percentage of total memory
This commit is contained in:
Iliyan Malchev 2015-05-12 23:55:40 +00:00 committed by Android Git Automerger
commit 2557cd21f0
1 changed files with 21 additions and 1 deletions
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22
fs_mgr/fs_mgr_fstab.c
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@ -15,10 +15,12 @@
*/
#include <ctype.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/mount.h>
#include <unistd.h>
#include "fs_mgr_priv.h"
@ -75,6 +77,19 @@ static struct flag_list fs_mgr_flags[] = {
{ 0, 0 },
};
static uint64_t calculate_zram_size(unsigned int percentage)
{
uint64_t total;
total = sysconf(_SC_PHYS_PAGES);
total *= percentage;
total /= 100;
total *= sysconf(_SC_PAGESIZE);
return total;
}
static int parse_flags(char *flags, struct flag_list *fl,
struct fs_mgr_flag_values *flag_vals,
char *fs_options, int fs_options_len)
@ -156,7 +171,12 @@ static int parse_flags(char *flags, struct flag_list *fl,
} else if ((fl[i].flag == MF_SWAPPRIO) && flag_vals) {
flag_vals->swap_prio = strtoll(strchr(p, '=') + 1, NULL, 0);
} else if ((fl[i].flag == MF_ZRAMSIZE) && flag_vals) {
flag_vals->zram_size = strtoll(strchr(p, '=') + 1, NULL, 0);
int is_percent = !!strrchr(p, '%');
unsigned int val = strtoll(strchr(p, '=') + 1, NULL, 0);
if (is_percent)
flag_vals->zram_size = calculate_zram_size(val);
else
flag_vals->zram_size = val;
}
break;
}