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author | Andrew Murray <andrew.murray@arm.com> | 2019-08-28 18:50:05 +0100 |
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committer | Will Deacon <will@kernel.org> | 2019-08-29 15:10:10 +0100 |
commit | 8f35eaa5f2de020073a48ad51112237c5932cfcc (patch) | |
tree | 7c8c92bcc562cc79495a89ce0abec2a5ba38e201 /kernel/irq/Makefile | |
parent | e21a712a9685488f5ce80495b37b9fdbe96c230d (diff) |
jump_label: Don't warn on __exit jump entries
On architectures that discard .exit.* sections at runtime, a
warning is printed for each jump label that is used within an
in-kernel __exit annotated function:
can't patch jump_label at ehci_hcd_cleanup+0x8/0x3c
WARNING: CPU: 0 PID: 1 at kernel/jump_label.c:410 __jump_label_update+0x12c/0x138
As these functions will never get executed (they are free'd along
with the rest of initmem) - we do not need to patch them and should
not display any warnings.
The warning is displayed because the test required to satisfy
jump_entry_is_init is based on init_section_contains (__init_begin to
__init_end) whereas the test in __jump_label_update is based on
init_kernel_text (_sinittext to _einittext) via kernel_text_address).
Fixes: 19483677684b ("jump_label: Annotate entries that operate on __init code earlier")
Signed-off-by: Andrew Murray <andrew.murray@arm.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'kernel/irq/Makefile')
0 files changed, 0 insertions, 0 deletions