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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /scripts/atomic/fallbacks/dec | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rwxr-xr-x | scripts/atomic/fallbacks/dec | 7 | ||||
-rwxr-xr-x | scripts/atomic/fallbacks/dec_and_test | 15 | ||||
-rwxr-xr-x | scripts/atomic/fallbacks/dec_if_positive | 15 | ||||
-rwxr-xr-x | scripts/atomic/fallbacks/dec_unless_positive | 14 |
4 files changed, 51 insertions, 0 deletions
diff --git a/scripts/atomic/fallbacks/dec b/scripts/atomic/fallbacks/dec new file mode 100755 index 000000000..8c144c818 --- /dev/null +++ b/scripts/atomic/fallbacks/dec @@ -0,0 +1,7 @@ +cat <<EOF +static __always_inline ${ret} +arch_${atomic}_${pfx}dec${sfx}${order}(${atomic}_t *v) +{ + ${retstmt}arch_${atomic}_${pfx}sub${sfx}${order}(1, v); +} +EOF diff --git a/scripts/atomic/fallbacks/dec_and_test b/scripts/atomic/fallbacks/dec_and_test new file mode 100755 index 000000000..8549f359b --- /dev/null +++ b/scripts/atomic/fallbacks/dec_and_test @@ -0,0 +1,15 @@ +cat <<EOF +/** + * arch_${atomic}_dec_and_test - decrement and test + * @v: pointer of type ${atomic}_t + * + * Atomically decrements @v by 1 and + * returns true if the result is 0, or false for all other + * cases. + */ +static __always_inline bool +arch_${atomic}_dec_and_test(${atomic}_t *v) +{ + return arch_${atomic}_dec_return(v) == 0; +} +EOF diff --git a/scripts/atomic/fallbacks/dec_if_positive b/scripts/atomic/fallbacks/dec_if_positive new file mode 100755 index 000000000..86bdced34 --- /dev/null +++ b/scripts/atomic/fallbacks/dec_if_positive @@ -0,0 +1,15 @@ +cat <<EOF +static __always_inline ${ret} +arch_${atomic}_dec_if_positive(${atomic}_t *v) +{ + ${int} dec, c = arch_${atomic}_read(v); + + do { + dec = c - 1; + if (unlikely(dec < 0)) + break; + } while (!arch_${atomic}_try_cmpxchg(v, &c, dec)); + + return dec; +} +EOF diff --git a/scripts/atomic/fallbacks/dec_unless_positive b/scripts/atomic/fallbacks/dec_unless_positive new file mode 100755 index 000000000..c531d5afe --- /dev/null +++ b/scripts/atomic/fallbacks/dec_unless_positive @@ -0,0 +1,14 @@ +cat <<EOF +static __always_inline bool +arch_${atomic}_dec_unless_positive(${atomic}_t *v) +{ + ${int} c = arch_${atomic}_read(v); + + do { + if (unlikely(c > 0)) + return false; + } while (!arch_${atomic}_try_cmpxchg(v, &c, c - 1)); + + return true; +} +EOF |