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powerpc/perf: remove current_is_64bit()
Since commit ed1cd6deb0
("powerpc: Activate CONFIG_THREAD_INFO_IN_TASK")
current_is_64bit() is quivalent to !is_32bit_task().
Remove the redundant function.
Suggested-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michal Suchanek <msuchanek@suse.de>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20190912194633.12045-1-msuchanek@suse.de
This commit is contained in:
parent
de84ffc3cc
commit
42484d2c0f
1 changed files with 1 additions and 16 deletions
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@ -284,16 +284,6 @@ static void perf_callchain_user_64(struct perf_callchain_entry_ctx *entry,
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}
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}
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static inline int current_is_64bit(void)
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{
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/*
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* We can't use test_thread_flag() here because we may be on an
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* interrupt stack, and the thread flags don't get copied over
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* from the thread_info on the main stack to the interrupt stack.
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*/
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return !test_ti_thread_flag(task_thread_info(current), TIF_32BIT);
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}
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#else /* CONFIG_PPC64 */
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/*
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* On 32-bit we just access the address and let hash_page create a
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@ -321,11 +311,6 @@ static inline void perf_callchain_user_64(struct perf_callchain_entry_ctx *entry
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{
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}
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static inline int current_is_64bit(void)
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{
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return 0;
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}
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static inline int valid_user_sp(unsigned long sp, int is_64)
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{
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if (!sp || (sp & 7) || sp > TASK_SIZE - 32)
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@ -486,7 +471,7 @@ static void perf_callchain_user_32(struct perf_callchain_entry_ctx *entry,
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void
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perf_callchain_user(struct perf_callchain_entry_ctx *entry, struct pt_regs *regs)
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{
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if (current_is_64bit())
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if (!is_32bit_task())
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perf_callchain_user_64(entry, regs);
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else
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perf_callchain_user_32(entry, regs);
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