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| author | Nicholas Piggin <npiggin@gmail.com> | 2018-05-05 03:19:29 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2018-06-03 20:40:26 +1000 |
| commit | 36d632ea831fd2fa3cb62599a465825f59076f64 (patch) | |
| tree | eb42671fef17f2f03c16fd1095d7887311ad33e6 | |
| parent | 54071e4176f0cedc39809f51cdbc78edd38ee77a (diff) | |
| download | linux-stable-36d632ea831fd2fa3cb62599a465825f59076f64.tar.gz linux-stable-36d632ea831fd2fa3cb62599a465825f59076f64.tar.bz2 linux-stable-36d632ea831fd2fa3cb62599a465825f59076f64.zip | |
powerpc/64: remove start_tb and accum_tb from thread_struct
These fields are only written to.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
| -rw-r--r-- | arch/powerpc/include/asm/processor.h | 4 | ||||
| -rw-r--r-- | arch/powerpc/kernel/process.c | 6 |
2 files changed, 1 insertions, 9 deletions
diff --git a/arch/powerpc/include/asm/processor.h b/arch/powerpc/include/asm/processor.h index c4b36a494a63..eff269adfa71 100644 --- a/arch/powerpc/include/asm/processor.h +++ b/arch/powerpc/include/asm/processor.h @@ -264,10 +264,6 @@ struct thread_struct { struct thread_fp_state *fp_save_area; int fpexc_mode; /* floating-point exception mode */ unsigned int align_ctl; /* alignment handling control */ -#ifdef CONFIG_PPC64 - unsigned long start_tb; /* Start purr when proc switched in */ - unsigned long accum_tb; /* Total accumulated purr for process */ -#endif #ifdef CONFIG_HAVE_HW_BREAKPOINT struct perf_event *ptrace_bps[HBP_NUM]; /* diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c index 25db000fa5b3..f4e5291584c5 100644 --- a/arch/powerpc/kernel/process.c +++ b/arch/powerpc/kernel/process.c @@ -1188,11 +1188,7 @@ struct task_struct *__switch_to(struct task_struct *prev, */ if (firmware_has_feature(FW_FEATURE_SPLPAR)) { struct cpu_usage *cu = this_cpu_ptr(&cpu_usage_array); - long unsigned start_tb, current_tb; - start_tb = old_thread->start_tb; - cu->current_tb = current_tb = mfspr(SPRN_PURR); - old_thread->accum_tb += (current_tb - start_tb); - new_thread->start_tb = current_tb; + cu->current_tb = mfspr(SPRN_PURR); } #endif /* CONFIG_PPC64 */ |