From ff011b256012157e2b7ccf2b9298a24b1322c770 Mon Sep 17 00:00:00 2001 From: Damjan Marion Date: Tue, 21 Sep 2021 11:38:04 +0200 Subject: vppinfra: make default hugepage size configurable i.e. memory { default-hugepage-size 1G } Type: improvement Change-Id: I822afb51712ae92f4e4992b8ffa33dcb15ccaef1 Signed-off-by: Damjan Marion --- src/vppinfra/linux/mem.c | 38 +++----------------------------------- src/vppinfra/mem.h | 18 ++++++++++++++++-- 2 files changed, 19 insertions(+), 37 deletions(-) (limited to 'src/vppinfra') diff --git a/src/vppinfra/linux/mem.c b/src/vppinfra/linux/mem.c index 036890f9c8d..3b752cf43cf 100644 --- a/src/vppinfra/linux/mem.c +++ b/src/vppinfra/linux/mem.c @@ -75,40 +75,6 @@ map_unlock () clib_atomic_release (&clib_mem_main.map_lock); } -__clib_export uword -clib_mem_get_default_hugepage_size (void) -{ - unformat_input_t input; - static u32 size = 0; - int fd; - - if (size) - goto done; - - /* - * If the kernel doesn't support hugepages, /proc/meminfo won't - * say anything about it. Use the regular page size as a default. - */ - size = clib_mem_get_page_size () / 1024; - - if ((fd = open ("/proc/meminfo", 0)) == -1) - return 0; - - unformat_init_clib_file (&input, fd); - - while (unformat_check_input (&input) != UNFORMAT_END_OF_INPUT) - { - if (unformat (&input, "Hugepagesize:%_%u kB", &size)) - ; - else - unformat_skip_line (&input); - } - unformat_free (&input); - close (fd); -done: - return 1024ULL * size; -} - static clib_mem_page_sz_t legacy_get_log2_default_hugepage_size (void) { @@ -156,6 +122,8 @@ clib_mem_main_init () else /* likely kernel older than 4.14 */ mm->log2_default_hugepage_sz = legacy_get_log2_default_hugepage_size (); + mm->log2_sys_default_hugepage_sz = mm->log2_default_hugepage_sz; + /* numa nodes */ va = mmap (0, page_size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); @@ -270,7 +238,7 @@ clib_mem_vm_create_fd (clib_mem_page_sz_t log2_page_size, char *fmt, ...) if (log2_page_size == mm->log2_page_sz) log2_page_size = CLIB_MEM_PAGE_SZ_DEFAULT; - else if (log2_page_size == mm->log2_default_hugepage_sz) + else if (log2_page_size == mm->log2_sys_default_hugepage_sz) log2_page_size = CLIB_MEM_PAGE_SZ_DEFAULT_HUGE; switch (log2_page_size) diff --git a/src/vppinfra/mem.h b/src/vppinfra/mem.h index 1cab0ae7252..dfe8de93626 100644 --- a/src/vppinfra/mem.h +++ b/src/vppinfra/mem.h @@ -130,9 +130,12 @@ typedef struct /* log2 system page size */ clib_mem_page_sz_t log2_page_sz; - /* log2 system default hugepage size */ + /* log2 default hugepage size */ clib_mem_page_sz_t log2_default_hugepage_sz; + /* log2 system default hugepage size */ + clib_mem_page_sz_t log2_sys_default_hugepage_sz; + /* bitmap of available numa nodes */ u32 numa_node_bitmap; @@ -470,15 +473,26 @@ clib_mem_get_page_size (void) return 1ULL << clib_mem_main.log2_page_sz; } +static_always_inline void +clib_mem_set_log2_default_hugepage_size (clib_mem_page_sz_t log2_page_sz) +{ + clib_mem_main.log2_default_hugepage_sz = log2_page_sz; +} + static_always_inline clib_mem_page_sz_t clib_mem_get_log2_default_hugepage_size () { return clib_mem_main.log2_default_hugepage_sz; } +static_always_inline uword +clib_mem_get_default_hugepage_size (void) +{ + return 1ULL << clib_mem_main.log2_default_hugepage_sz; +} + int clib_mem_vm_create_fd (clib_mem_page_sz_t log2_page_size, char *fmt, ...); uword clib_mem_get_fd_page_size (int fd); -uword clib_mem_get_default_hugepage_size (void); clib_mem_page_sz_t clib_mem_get_fd_log2_page_size (int fd); uword clib_mem_vm_reserve (uword start, uword size, clib_mem_page_sz_t log2_page_sz); -- cgit 1.2.3-korg