From b509504e6b6eb8590d2d7dad2447c1bd933ce94c Mon Sep 17 00:00:00 2001 From: Damjan Marion Date: Fri, 11 Sep 2020 22:13:46 +0200 Subject: vppinfra: add clib_log2_page_sz and format/unformat functions Type: improvement Change-Id: Ie44dbf9396cfed19dba153810b7bd76ce5377cd4 Signed-off-by: Damjan Marion --- src/vppinfra/std-formats.c | 68 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 68 insertions(+) (limited to 'src/vppinfra/std-formats.c') diff --git a/src/vppinfra/std-formats.c b/src/vppinfra/std-formats.c index 62d309e2fb0..f4892d6d6f4 100644 --- a/src/vppinfra/std-formats.c +++ b/src/vppinfra/std-formats.c @@ -268,6 +268,74 @@ unformat_memory_size (unformat_input_t * input, va_list * va) return 1; } +/* Unparse memory page size e.g. 4K, 2M */ +u8 * +format_log2_page_size (u8 * s, va_list * va) +{ + clib_mem_page_sz_t log2_page_sz = va_arg (*va, clib_mem_page_sz_t); + + if (log2_page_sz == CLIB_MEM_PAGE_SZ_UNKNOWN) + return format (s, "unknown"); + + if (log2_page_sz == CLIB_MEM_PAGE_SZ_DEFAULT) + return format (s, "default"); + + if (log2_page_sz == CLIB_MEM_PAGE_SZ_DEFAULT_HUGE) + return format (s, "default-hugepage"); + + if (log2_page_sz >= 30) + return format (s, "%uG", 1 << (log2_page_sz - 30)); + + if (log2_page_sz >= 20) + return format (s, "%uM", 1 << (log2_page_sz - 20)); + + if (log2_page_sz >= 10) + return format (s, "%uK", 1 << (log2_page_sz - 10)); + + return format (s, "%u", 1 << log2_page_sz); +} + +/* Parse memory page size e.g. 4K, 2M */ +uword +unformat_log2_page_size (unformat_input_t * input, va_list * va) +{ + uword amount, shift, c; + clib_mem_page_sz_t *result = va_arg (*va, clib_mem_page_sz_t *); + + if (unformat (input, "default")) + return CLIB_MEM_PAGE_SZ_DEFAULT; + + if (unformat (input, "default-hugepage")) + return CLIB_MEM_PAGE_SZ_DEFAULT_HUGE; + + if (!unformat (input, "%wd%_", &amount)) + return CLIB_MEM_PAGE_SZ_UNKNOWN; + + c = unformat_get_input (input); + switch (c) + { + case 'k': + case 'K': + shift = 10; + break; + case 'm': + case 'M': + shift = 20; + break; + case 'g': + case 'G': + shift = 30; + break; + default: + shift = 0; + unformat_put_input (input); + break; + } + + *result = min_log2 (amount) + shift; + return 1; +} + /* Format c identifier: e.g. a_name -> "a name". Works for both vector names and null terminated c strings. */ u8 * -- cgit 1.2.3-korg