diff options
| author |   Nick Desaulniers <ndesaulniers@google.com> | 2020-01-04 13:00:02 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2020-01-04 13:55:09 -0800 |
| commit | 63e80314ab7cf4783526d2e44ee57a90514911c9 (patch) | |
| tree | f0c23db2b28e9f2cc0064595eb30fe240a0204a8 /arch/hexagon/kernel | |
| parent | hexagon: parenthesize registers in asm predicates (diff) | |
| download | linux-dev-63e80314ab7cf4783526d2e44ee57a90514911c9.tar.xz linux-dev-63e80314ab7cf4783526d2e44ee57a90514911c9.zip | |
hexagon: work around compiler crash
Clang cannot translate the string "r30" into a valid register yet.
Link: https://github.com/ClangBuiltLinux/linux/issues/755
Link: http://lkml.kernel.org/r/20191028155722.23419-1-ndesaulniers@google.com
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Suggested-by: Sid Manning <sidneym@quicinc.com>
Reviewed-by: Brian Cain <bcain@codeaurora.org>
Cc: Allison Randal <allison@lohutok.net>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Richard Fontana <rfontana@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/hexagon/kernel')
| -rw-r--r-- | arch/hexagon/kernel/stacktrace.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/arch/hexagon/kernel/stacktrace.c b/arch/hexagon/kernel/stacktrace.c index 35f29423fda8..5ed02f699479 100644 --- a/arch/hexagon/kernel/stacktrace.c +++ b/arch/hexagon/kernel/stacktrace.c @@ -11,8 +11,6 @@ #include <linux/thread_info.h> #include <linux/module.h> -register unsigned long current_frame_pointer asm("r30"); - struct stackframe { unsigned long fp; unsigned long rets; @@ -30,7 +28,7 @@ void save_stack_trace(struct stack_trace *trace) low = (unsigned long)task_stack_page(current); high = low + THREAD_SIZE; - fp = current_frame_pointer; + fp = (unsigned long)__builtin_frame_address(0); while (fp >= low && fp <= (high - sizeof(*frame))) { frame = (struct stackframe *)fp; |