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| author | Nick Desaulniers <ndesaulniers@google.com> | 2020-01-04 13:00:02 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-01-17 19:47:17 +0100 |
| commit | dab02b0aedb06e339d4b35961dd4890118c69570 (patch) | |
| tree | 1ae87a149c68b9032a9d6cb3e1e6f6a51903326d | |
| parent | 246d487edd89c94a7773c354dc8a0904d530a60d (diff) | |
| download | linux-rt-dab02b0aedb06e339d4b35961dd4890118c69570.tar.gz | |
hexagon: work around compiler crash
[ Upstream commit 63e80314ab7cf4783526d2e44ee57a90514911c9 ]
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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -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 41866a06adf7..ec4ef682923d 100644 --- a/arch/hexagon/kernel/stacktrace.c +++ b/arch/hexagon/kernel/stacktrace.c @@ -24,8 +24,6 @@ #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; @@ -43,7 +41,7 @@ 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; |