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checksyscalls: only run when necessary

Currently checksyscalls.sh is unconditionally executed during each build. Most of these executions are unnecessary. Only run checksyscalls.sh if one of its inputs have changed. This new logic does not work for the multiple invocations done for MIPS. The effect is that checksyscalls.sh is still executed unconditionally. However this is not worse than before.

Thomas Weißschuh committed 7 months ago

Commit b34db3f1 parent e856b6c2 files · +14 −3Browse files

Unified · Split

2 files
  1. Kbuild +9 −3
  2. scripts/checksyscalls.sh +5 −0
Kbuild+9−3
@@ -47,12 +47,18 @@ $(rq-offsets-file): kernel/sched/rq-offsets.s FORCE · 46 unmodified lines
47 47
48# Check for missing system calls48# Check for missing system calls
49 49
50missing-syscalls-file := .tmp_missing-syscalls
51
52targets += $(missing-syscalls-file)
53
50quiet_cmd_syscalls = CALL $<54quiet_cmd_syscalls = CALL $<
51 cmd_syscalls = $(CONFIG_SHELL) $< $(CC) $(c_flags) $(missing_syscalls_flags)55 cmd_syscalls = DEPFILE=$(depfile) $(CONFIG_SHELL) $< $(CC) $(c_flags) $(missing_syscalls_flags); touch $@
56
57$(missing-syscalls-file): scripts/checksyscalls.sh $(rq-offsets-file) FORCE
58 $(call if_changed_dep,syscalls)
52 59
53PHONY += missing-syscalls60PHONY += missing-syscalls
54missing-syscalls: scripts/checksyscalls.sh $(rq-offsets-file)61missing-syscalls: $(missing-syscalls-file)
55 $(call cmd,syscalls)
56 62
57# Check the manual modification of atomic headers63# Check the manual modification of atomic headers
58 64
scripts/checksyscalls.sh+5−0
@@ -275,3 +275,8 @@ syscall_list() { · 274 unmodified lines
275 275
276(ignore_list && syscall_list ${reference_table}) | \276(ignore_list && syscall_list ${reference_table}) | \
277$* -Wno-error -Wno-unused-macros -E -x c - > /dev/null277$* -Wno-error -Wno-unused-macros -E -x c - > /dev/null
278
279# For fixdep
280if [ -n "${DEPFILE}" ]; then
281 echo "${0}: ${0} ${reference_table}" >> "${DEPFILE}"
282fi