diff options
| author | Nathan Lynch | 2020-12-07 15:51:53 -0600 |
|---|---|---|
| committer | Michael Ellerman | 2020-12-08 21:41:01 +1100 |
| commit | 395b2c090907975c627902ba8fda0bdb04c7cad3 (patch) | |
| tree | 3e25fa9bae8d4c7bd3239a26e6555818ae8db7da | |
| parent | 796f9247b4fa9bec320d6b47ffde2ecf86cc71c0 (diff) | |
powerpc/rtas: remove rtas_suspend_cpu()
rtas_suspend_cpu() no longer has users; remove it and
__rtas_suspend_cpu() which now becomes unused as well.
Signed-off-by: Nathan Lynch <nathanl@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20201207215200.1785968-22-nathanl@linux.ibm.com
| -rw-r--r-- | arch/powerpc/include/asm/rtas.h | 1 | ||||
| -rw-r--r-- | arch/powerpc/kernel/rtas.c | 52 |
2 files changed, 0 insertions, 53 deletions
diff --git a/arch/powerpc/include/asm/rtas.h b/arch/powerpc/include/asm/rtas.h index 9a6107ffe378..97ccb40fb09f 100644 --- a/arch/powerpc/include/asm/rtas.h +++ b/arch/powerpc/include/asm/rtas.h @@ -256,7 +256,6 @@ extern bool rtas_indicator_present(int token, int *maxindex); extern int rtas_set_indicator(int indicator, int index, int new_value); extern int rtas_set_indicator_fast(int indicator, int index, int new_value); extern void rtas_progress(char *s, unsigned short hex); -extern int rtas_suspend_cpu(struct rtas_suspend_me_data *data); extern int rtas_suspend_last_cpu(struct rtas_suspend_me_data *data); int rtas_ibm_suspend_me(int *fw_status); diff --git a/arch/powerpc/kernel/rtas.c b/arch/powerpc/kernel/rtas.c index 7e6024f570da..aedd46967b99 100644 --- a/arch/powerpc/kernel/rtas.c +++ b/arch/powerpc/kernel/rtas.c @@ -873,58 +873,6 @@ int rtas_suspend_last_cpu(struct rtas_suspend_me_data *data) return __rtas_suspend_last_cpu(data, 0); } -static int __rtas_suspend_cpu(struct rtas_suspend_me_data *data, int wake_when_done) -{ - long rc = H_SUCCESS; - unsigned long msr_save; - int cpu; - - atomic_inc(&data->working); - - /* really need to ensure MSR.EE is off for H_JOIN */ - msr_save = mfmsr(); - mtmsr(msr_save & ~(MSR_EE)); - - while (rc == H_SUCCESS && !atomic_read(&data->done) && !atomic_read(&data->error)) - rc = plpar_hcall_norets(H_JOIN); - - mtmsr(msr_save); - - if (rc == H_SUCCESS) { - /* This cpu was prodded and the suspend is complete. */ - goto out; - } else if (rc == H_CONTINUE) { - /* All other cpus are in H_JOIN, this cpu does - * the suspend. - */ - return __rtas_suspend_last_cpu(data, wake_when_done); - } else { - printk(KERN_ERR "H_JOIN on cpu %i failed with rc = %ld\n", - smp_processor_id(), rc); - atomic_set(&data->error, rc); - } - - if (wake_when_done) { - atomic_set(&data->done, 1); - - /* This cpu did the suspend or got an error; in either case, - * we need to prod all other other cpus out of join state. - * Extra prods are harmless. - */ - for_each_online_cpu(cpu) - plpar_hcall_norets(H_PROD, get_hard_smp_processor_id(cpu)); - } -out: - if (atomic_dec_return(&data->working) == 0) - complete(data->complete); - return rc; -} - -int rtas_suspend_cpu(struct rtas_suspend_me_data *data) -{ - return __rtas_suspend_cpu(data, 0); -} - /** * rtas_call_reentrant() - Used for reentrant rtas calls * @token: Token for desired reentrant RTAS call |