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| author | Ingo Molnar <mingo@kernel.org> | 2020-11-07 12:50:48 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2020-11-07 13:20:17 +0100 |
| commit | 666fab4a3ea143315a9c059fad9f3a0f1365d54b (patch) | |
| tree | e9e4be3b0eeac79346d52a86183326617d0c9999 /scripts/atomic | |
| parent | 0a986ea81e1aa8ac17e82cda53cc95158217956e (diff) | |
| parent | 659caaf65dc9c7150aa3e80225ec6e66b25ab3ce (diff) | |
| download | linux-666fab4a3ea143315a9c059fad9f3a0f1365d54b.tar.bz2 | |
Merge branch 'linus' into perf/kprobes
Conflicts:
include/asm-generic/atomic-instrumented.h
kernel/kprobes.c
Use the upstream atomic-instrumented.h checksum, and pick
the kprobes version of kernel/kprobes.c, which effectively
reverts this upstream workaround:
645f224e7ba2: ("kprobes: Tell lockdep about kprobe nesting")
Since the new code *should* be fine without nesting.
Knock on wood ...
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'scripts/atomic')
| -rwxr-xr-x | scripts/atomic/check-atomics.sh | 1 | ||||
| -rwxr-xr-x | scripts/atomic/gen-atomic-instrumented.sh | 21 |
2 files changed, 16 insertions, 6 deletions
diff --git a/scripts/atomic/check-atomics.sh b/scripts/atomic/check-atomics.sh index 8378c63a1e09..82748d42ecc5 100755 --- a/scripts/atomic/check-atomics.sh +++ b/scripts/atomic/check-atomics.sh @@ -16,6 +16,7 @@ fi cat <<EOF | asm-generic/atomic-instrumented.h asm-generic/atomic-long.h +linux/atomic-arch-fallback.h linux/atomic-fallback.h EOF while read header; do diff --git a/scripts/atomic/gen-atomic-instrumented.sh b/scripts/atomic/gen-atomic-instrumented.sh index 85dc25685c0d..5766ffcec7c5 100755 --- a/scripts/atomic/gen-atomic-instrumented.sh +++ b/scripts/atomic/gen-atomic-instrumented.sh @@ -5,9 +5,10 @@ ATOMICDIR=$(dirname $0) . ${ATOMICDIR}/atomic-tbl.sh -#gen_param_check(arg) +#gen_param_check(meta, arg) gen_param_check() { + local meta="$1"; shift local arg="$1"; shift local type="${arg%%:*}" local name="$(gen_param_name "${arg}")" @@ -17,17 +18,25 @@ gen_param_check() i) return;; esac - # We don't write to constant parameters - [ ${type#c} != ${type} ] && rw="read" + if [ ${type#c} != ${type} ]; then + # We don't write to constant parameters. + rw="read" + elif [ "${meta}" != "s" ]; then + # An atomic RMW: if this parameter is not a constant, and this atomic is + # not just a 's'tore, this parameter is both read from and written to. + rw="read_write" + fi printf "\tinstrument_atomic_${rw}(${name}, sizeof(*${name}));\n" } -#gen_param_check(arg...) +#gen_params_checks(meta, arg...) gen_params_checks() { + local meta="$1"; shift + while [ "$#" -gt 0 ]; do - gen_param_check "$1" + gen_param_check "$meta" "$1" shift; done } @@ -77,7 +86,7 @@ gen_proto_order_variant() local ret="$(gen_ret_type "${meta}" "${int}")" local params="$(gen_params "${int}" "${atomic}" "$@")" - local checks="$(gen_params_checks "$@")" + local checks="$(gen_params_checks "${meta}" "$@")" local args="$(gen_args "$@")" local retstmt="$(gen_ret_stmt "${meta}")" |