diff options
Diffstat (limited to 'sys-utils/lsmem.c')
| -rw-r--r-- | sys-utils/lsmem.c | 98 |
1 files changed, 97 insertions, 1 deletions
diff --git a/sys-utils/lsmem.c b/sys-utils/lsmem.c index aeffd29dd..1d26579fd 100644 --- a/sys-utils/lsmem.c +++ b/sys-utils/lsmem.c @@ -42,11 +42,25 @@ #define MEMORY_STATE_GOING_OFFLINE 2 #define MEMORY_STATE_UNKNOWN 3 +enum zone_id { + ZONE_DMA = 0, + ZONE_DMA32, + ZONE_NORMAL, + ZONE_HIGHMEM, + ZONE_MOVABLE, + ZONE_DEVICE, + ZONE_NONE, + ZONE_UNKNOWN, + MAX_NR_ZONES, +}; + struct memory_block { uint64_t index; uint64_t count; int state; int node; + int nr_zones; + int zones[MAX_NR_ZONES]; unsigned int removable:1; }; @@ -72,7 +86,9 @@ struct lsmem { want_state : 1, want_removable : 1, want_summary : 1, - want_table : 1; + want_table : 1, + want_zones : 1, + have_zones : 1; }; enum { @@ -82,6 +98,18 @@ enum { COL_REMOVABLE, COL_BLOCK, COL_NODE, + COL_ZONES, +}; + +static char *zone_names[] = { + [ZONE_DMA] = "DMA", + [ZONE_DMA32] = "DMA32", + [ZONE_NORMAL] = "Normal", + [ZONE_HIGHMEM] = "Highmem", + [ZONE_MOVABLE] = "Movable", + [ZONE_DEVICE] = "Device", + [ZONE_NONE] = "None", /* block contains more than one zone, can't be offlined */ + [ZONE_UNKNOWN] = "Unknown", }; /* column names */ @@ -102,6 +130,7 @@ static struct coldesc coldescs[] = { [COL_REMOVABLE] = { "REMOVABLE", 0, SCOLS_FL_RIGHT, N_("memory is removable")}, [COL_BLOCK] = { "BLOCK", 0, SCOLS_FL_RIGHT, N_("memory block number or blocks range")}, [COL_NODE] = { "NODE", 0, SCOLS_FL_RIGHT, N_("numa node of memory")}, + [COL_ZONES] = { "ZONES", 0, SCOLS_FL_RIGHT, N_("valid zones for the memory range")}, }; /* columns[] array specifies all currently wanted output column. The columns @@ -120,6 +149,20 @@ static inline size_t err_columns_index(size_t arysz, size_t idx) return idx; } +/* + * name must be null-terminated + */ +static int zone_name_to_id(const char *name) +{ + size_t i; + + for (i = 0; i < ARRAY_SIZE(zone_names); i++) { + if (!strcasecmp(name, zone_names[i])) + return i; + } + return ZONE_UNKNOWN; +} + #define add_column(ary, n, id) \ ((ary)[ err_columns_index(ARRAY_SIZE(ary), (n)) ] = (id)) @@ -214,6 +257,25 @@ static void add_scols_line(struct lsmem *lsmem, struct memory_block *blk) else str = xstrdup("-"); break; + case COL_ZONES: + if (lsmem->have_zones) { + char valid_zones[BUFSIZ]; + int j, zone_id; + + valid_zones[0] = '\0'; + for (j = 0; j < blk->nr_zones; j++) { + zone_id = blk->zones[j]; + if (strlen(valid_zones) + + strlen(zone_names[zone_id]) > BUFSIZ - 2) + break; + strcat(valid_zones, zone_names[zone_id]); + if (j + 1 < blk->nr_zones) + strcat(valid_zones, "/"); + } + str = xstrdup(valid_zones); + } else + str = xstrdup("-"); + break; } if (str && scols_line_refer_data(line, i, str) != 0) @@ -272,7 +334,9 @@ static int memory_block_get_node(char *name) static void memory_block_read_attrs(struct lsmem *lsmem, char *name, struct memory_block *blk) { + char *token = NULL; char line[BUFSIZ]; + int i; blk->count = 1; blk->index = strtoumax(name + 6, NULL, 10); /* get <num> of "memory<num>" */ @@ -287,11 +351,26 @@ static void memory_block_read_attrs(struct lsmem *lsmem, char *name, blk->state = MEMORY_STATE_GOING_OFFLINE; if (lsmem->have_nodes) blk->node = memory_block_get_node(name); + + blk->nr_zones = 0; + if (lsmem->have_zones) { + path_read_str(line, sizeof(line), _PATH_SYS_MEMORY"/%s/%s", name, + "valid_zones"); + token = strtok(line, " "); + } + for (i = 0; i < MAX_NR_ZONES; i++) { + if (token) { + blk->zones[i] = zone_name_to_id(token); + blk->nr_zones++; + token = strtok(NULL, " "); + } + } } static int is_mergeable(struct lsmem *lsmem, struct memory_block *blk) { struct memory_block *curr; + int i; if (!lsmem->nblocks) return 0; @@ -308,6 +387,15 @@ static int is_mergeable(struct lsmem *lsmem, struct memory_block *blk) if (curr->node != blk->node) return 0; } + if (lsmem->want_zones && lsmem->have_zones) { + if (curr->nr_zones != blk->nr_zones) + return 0; + for (i = 0; i < curr->nr_zones; i++) { + if (curr->zones[i] == ZONE_UNKNOWN || + curr->zones[i] != blk->zones[i]) + return 0; + } + } return 1; } @@ -362,6 +450,12 @@ static void read_basic_info(struct lsmem *lsmem) if (memory_block_get_node(lsmem->dirs[0]->d_name) != -1) lsmem->have_nodes = 1; + + /* The valid_zones sysfs attribute was introduced with kernel 3.18 */ + if (path_exist(_PATH_SYS_MEMORY "/memory0/valid_zones")) + lsmem->have_zones = 1; + else if (lsmem->want_zones) + warnx(_("Cannot read zones, no valid_zones sysfs attribute present")); } static void __attribute__((__noreturn__)) usage(void) @@ -553,6 +647,8 @@ int main(int argc, char **argv) lsmem->want_node = 1; if (has_column(COL_REMOVABLE)) lsmem->want_removable = 1; + if (has_column(COL_ZONES)) + lsmem->want_zones = 1; /* * Read data and print output |