Since commit ed1cd6deb013 ("powerpc: Activate CONFIG_THREAD_INFO_IN_TASK")
current_is_64bit() is quivalent to !is_32bit_task().
Remove the redundant function.Link: https://github.com/linuxppc/issues/issues/275 Link: https://lkml.org/lkml/2019/9/12/540 Fixes: linuxppc#275 Suggested-by: Christophe Leroy <christophe.le...@c-s.fr> Signed-off-by: Michal Suchanek <msucha...@suse.de> --- arch/powerpc/perf/callchain.c | 17 +---------------- 1 file changed, 1 insertion(+), 16 deletions(-) diff --git a/arch/powerpc/perf/callchain.c b/arch/powerpc/perf/callchain.c index 7863ee0a0e69..fbf76cb01026 100644 --- a/arch/powerpc/perf/callchain.c +++ b/arch/powerpc/perf/callchain.c @@ -275,16 +275,6 @@ static void perf_callchain_user_64(struct perf_callchain_entry_ctx *entry, } } -static inline int current_is_64bit(void) -{ - /* - * We can't use test_thread_flag() here because we may be on an - * interrupt stack, and the thread flags don't get copied over - * from the thread_info on the main stack to the interrupt stack. - */ - return !test_ti_thread_flag(task_thread_info(current), TIF_32BIT); -} - #else /* CONFIG_PPC64 */ static int read_user_stack_slow(void __user *ptr, void *buf, int nb) { @@ -296,11 +286,6 @@ static inline void perf_callchain_user_64(struct perf_callchain_entry_ctx *entry { } -static inline int current_is_64bit(void) -{ - return 0; -} - #define __SIGNAL_FRAMESIZE32 __SIGNAL_FRAMESIZE #define sigcontext32 sigcontext #define mcontext32 mcontext @@ -477,7 +462,7 @@ static void perf_callchain_user_32(struct perf_callchain_entry_ctx *entry, void perf_callchain_user(struct perf_callchain_entry_ctx *entry, struct pt_regs *regs) { - if (current_is_64bit()) + if (!is_32bit_task()) perf_callchain_user_64(entry, regs); else perf_callchain_user_32(entry, regs); -- 2.23.0
