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| author | David S. Miller <davem@davemloft.net> | 2018-07-20 14:45:10 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-07-20 21:17:12 -0700 |
| commit | c4c5551df136a7c4edd7c2f433d9a296b39826a2 (patch) | |
| tree | a33d9f228efd34b0ad18e380385093405ef72d98 /kernel/bpf/btf.c | |
| parent | 40999f11ce677ce3c5d0e8f5f76c40192a26b479 (diff) | |
| parent | 48e5aee81f320da8abd1f09c8410f584315f59b0 (diff) | |
| download | linux-c4c5551df136a7c4edd7c2f433d9a296b39826a2.tar.bz2 | |
Merge ra.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux
All conflicts were trivial overlapping changes, so reasonably
easy to resolve.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'kernel/bpf/btf.c')
| -rw-r--r-- | kernel/bpf/btf.c | 30 |
1 files changed, 13 insertions, 17 deletions
diff --git a/kernel/bpf/btf.c b/kernel/bpf/btf.c index 2d49d18b793a..e016ac3afa24 100644 --- a/kernel/bpf/btf.c +++ b/kernel/bpf/btf.c @@ -991,16 +991,13 @@ static void btf_int_bits_seq_show(const struct btf *btf, void *data, u8 bits_offset, struct seq_file *m) { + u16 left_shift_bits, right_shift_bits; u32 int_data = btf_type_int(t); u16 nr_bits = BTF_INT_BITS(int_data); u16 total_bits_offset; u16 nr_copy_bytes; u16 nr_copy_bits; - u8 nr_upper_bits; - union { - u64 u64_num; - u8 u8_nums[8]; - } print_num; + u64 print_num; total_bits_offset = bits_offset + BTF_INT_OFFSET(int_data); data += BITS_ROUNDDOWN_BYTES(total_bits_offset); @@ -1008,21 +1005,20 @@ static void btf_int_bits_seq_show(const struct btf *btf, nr_copy_bits = nr_bits + bits_offset; nr_copy_bytes = BITS_ROUNDUP_BYTES(nr_copy_bits); - print_num.u64_num = 0; - memcpy(&print_num.u64_num, data, nr_copy_bytes); + print_num = 0; + memcpy(&print_num, data, nr_copy_bytes); - /* Ditch the higher order bits */ - nr_upper_bits = BITS_PER_BYTE_MASKED(nr_copy_bits); - if (nr_upper_bits) { - /* We need to mask out some bits of the upper byte. */ - u8 mask = (1 << nr_upper_bits) - 1; +#ifdef __BIG_ENDIAN_BITFIELD + left_shift_bits = bits_offset; +#else + left_shift_bits = BITS_PER_U64 - nr_copy_bits; +#endif + right_shift_bits = BITS_PER_U64 - nr_bits; - print_num.u8_nums[nr_copy_bytes - 1] &= mask; - } - - print_num.u64_num >>= bits_offset; + print_num <<= left_shift_bits; + print_num >>= right_shift_bits; - seq_printf(m, "0x%llx", print_num.u64_num); + seq_printf(m, "0x%llx", print_num); } static void btf_int_seq_show(const struct btf *btf, const struct btf_type *t, |