488570ebd4
Many open source projects have moved to using SPDX identifiers to specify license information, reducing the amount of boilerplate code in every source file. This patch replaces the bulk of SPDK .c, .cpp and Makefiles with the BSD-3-Clause identifier. Almost all of these files share the exact same license text, and this patch only modifies the files that contain the most common license text. There can be slight variations because the third clause contains company names - most say "Intel Corporation", but there are instances for Nvidia, Samsung, Eideticom and even "the copyright holder". Used a bash script to automate replacement of the license text with SPDX identifier which is checked into scripts/spdx.sh. Signed-off-by: Jim Harris <james.r.harris@intel.com> Change-Id: Iaa88ab5e92ea471691dc298cfe41ebfb5d169780 Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/12904 Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com> Community-CI: Mellanox Build Bot Tested-by: SPDK CI Jenkins <sys_sgci@intel.com> Reviewed-by: Aleksey Marchuk <alexeymar@nvidia.com> Reviewed-by: Changpeng Liu <changpeng.liu@intel.com> Reviewed-by: Dong Yi <dongx.yi@intel.com> Reviewed-by: Konrad Sztyber <konrad.sztyber@intel.com> Reviewed-by: Paul Luse <paul.e.luse@intel.com> Reviewed-by: <qun.wan@intel.com>
47 lines
1.4 KiB
C
47 lines
1.4 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright(c) Intel Corporation. All rights reserved.
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* All rights reserved.
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*/
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#include "spdk/stdinc.h"
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#include "spdk/util.h"
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#include "spdk/assert.h"
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/* The following will automatically generate several version of
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* this function, targeted at different architectures. This
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* is only supported by GCC 6 or newer. */
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#if defined(__GNUC__) && __GNUC__ >= 6 && !defined(__clang__) \
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&& (defined(__i386__) || defined(__x86_64__)) \
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&& defined(__ELF__)
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__attribute__((target_clones("bmi", "arch=core2", "arch=atom", "default")))
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#endif
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uint32_t
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spdk_u32log2(uint32_t x)
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{
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if (x == 0) {
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/* log(0) is undefined */
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return 0;
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}
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SPDK_STATIC_ASSERT(sizeof(x) == sizeof(unsigned int), "Incorrect size");
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return 31u - __builtin_clz(x);
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}
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/* The following will automatically generate several version of
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* this function, targeted at different architectures. This
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* is only supported by GCC 6 or newer. */
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#if defined(__GNUC__) && __GNUC__ >= 6 && !defined(__clang__) \
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&& (defined(__i386__) || defined(__x86_64__)) \
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&& defined(__ELF__)
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__attribute__((target_clones("bmi", "arch=core2", "arch=atom", "default")))
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#endif
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uint64_t
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spdk_u64log2(uint64_t x)
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{
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if (x == 0) {
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/* log(0) is undefined */
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return 0;
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}
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SPDK_STATIC_ASSERT(sizeof(x) == sizeof(unsigned long long), "Incorrect size");
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return 63u - __builtin_clzll(x);
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}
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