From 5d08fecdd39f2373713a0475b75a4126800c9acf Mon Sep 17 00:00:00 2001 From: Jerin Jacob Date: Wed, 7 Nov 2018 06:59:06 +0000 Subject: [PATCH] eal: fix build MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Some toolchain has fls() definition in string.h as argument type int, which is conflicting uint32_t argument type. /export/dpdk.org/lib/librte_eal/common/rte_reciprocal.c:47:19: error: conflicting types for ‘fls’ static inline int fls(uint32_t x) ^~~ /opt/marvell-tools-201/aarch64-marvell-elf/include/strings.h:59:6: note: previous declaration of ‘fls’ was here int fls(int) __pure2; FreeBSD string.h also has fls() with argument as int type. https://www.freebsd.org/cgi/man.cgi?query=fls&sektion=3 Fixing the conflict by using rte version of fls. Fixes: ffe3ec811ef5 ("sched: introduce reciprocal divide") Fixes: faf2b25c9f80 ("fm10k: support VMDQ in multi-queue configuration") Cc: stable@dpdk.org Suggested-by: Thomas Monjalon Signed-off-by: Jerin Jacob --- drivers/net/fm10k/fm10k_ethdev.c | 11 +++-------- lib/librte_eal/common/rte_reciprocal.c | 17 +---------------- 2 files changed, 4 insertions(+), 24 deletions(-) diff --git a/drivers/net/fm10k/fm10k_ethdev.c b/drivers/net/fm10k/fm10k_ethdev.c index c852022dd9..85fb6c5cbc 100644 --- a/drivers/net/fm10k/fm10k_ethdev.c +++ b/drivers/net/fm10k/fm10k_ethdev.c @@ -464,11 +464,6 @@ fm10k_dev_configure(struct rte_eth_dev *dev) return 0; } -/* fls = find last set bit = 32 minus the number of leading zeros */ -#ifndef fls -#define fls(x) (((x) == 0) ? 0 : (32 - __builtin_clz((x)))) -#endif - static void fm10k_dev_vmdq_rx_configure(struct rte_eth_dev *dev) { @@ -1030,8 +1025,8 @@ fm10k_dev_dglort_map_configure(struct rte_eth_dev *dev) macvlan = FM10K_DEV_PRIVATE_TO_MACVLAN(dev->data->dev_private); nb_queue_pools = macvlan->nb_queue_pools; - pool_len = nb_queue_pools ? fls(nb_queue_pools - 1) : 0; - rss_len = fls(dev->data->nb_rx_queues - 1) - pool_len; + pool_len = nb_queue_pools ? rte_fls_u32(nb_queue_pools - 1) : 0; + rss_len = rte_fls_u32(dev->data->nb_rx_queues - 1) - pool_len; /* GLORT 0x0-0x3F are used by PF and VMDQ, 0x40-0x7F used by FD */ dglortdec = (rss_len << FM10K_DGLORTDEC_RSSLENGTH_SHIFT) | pool_len; @@ -1042,7 +1037,7 @@ fm10k_dev_dglort_map_configure(struct rte_eth_dev *dev) FM10K_WRITE_REG(hw, FM10K_DGLORTDEC(0), dglortdec); /* Flow Director configurations, only queue number is valid. */ - dglortdec = fls(dev->data->nb_rx_queues - 1); + dglortdec = rte_fls_u32(dev->data->nb_rx_queues - 1); dglortmask = (GLORT_FD_MASK << FM10K_DGLORTMAP_MASK_SHIFT) | (hw->mac.dglort_map + GLORT_FD_Q_BASE); FM10K_WRITE_REG(hw, FM10K_DGLORTMAP(1), dglortmask); diff --git a/lib/librte_eal/common/rte_reciprocal.c b/lib/librte_eal/common/rte_reciprocal.c index d81b11db6d..f017d0c283 100644 --- a/lib/librte_eal/common/rte_reciprocal.c +++ b/lib/librte_eal/common/rte_reciprocal.c @@ -41,28 +41,13 @@ #include "rte_reciprocal.h" -/* find largest set bit. - * portable and slow but does not matter for this usage. - */ -static inline int fls(uint32_t x) -{ - int b; - - for (b = 31; b >= 0; --b) { - if (x & (1u << b)) - return b + 1; - } - - return 0; -} - struct rte_reciprocal rte_reciprocal_value(uint32_t d) { struct rte_reciprocal R; uint64_t m; int l; - l = fls(d - 1); + l = rte_fls_u32(d - 1); m = ((1ULL << 32) * ((1ULL << l) - d)); m /= d; -- 2.20.1