[PATCH v9 5/8] powerpc/perf: remove current_is_64bit()
From: Michal Suchanek <hidden>
Date: 2019-09-13 12:58:30
Also in:
linux-fsdevel, lkml
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Linus Torvalds
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 <redacted>
Signed-off-by: Michal Suchanek <redacted>
---
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