From: Pratik Rajesh Sampat <psampat@linux.ibm.com>
To: mpe@ellerman.id.au, benh@kernel.crashing.org, paulus@samba.org,
mikey@neuling.org, ravi.bangoria@linux.ibm.com,
ego@linux.vnet.ibm.com, svaidy@linux.ibm.com,
psampat@linux.ibm.com, pratik.r.sampat@gmail.com,
linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org
Subject: [PATCH v2 3/3] powerpc/powernv/idle: Rename pnv_first_spr_loss_level variable
Date: Fri, 10 Jul 2020 10:52:07 +0530 [thread overview]
Message-ID: <20200710052207.12003-4-psampat@linux.ibm.com> (raw)
In-Reply-To: <20200710052207.12003-1-psampat@linux.ibm.com>
Replace the variable name from using "pnv_first_spr_loss_level" to
"pnv_first_fullstate_loss_level".
As pnv_first_spr_loss_level is supposed to be the earliest state that
has OPAL_PM_LOSE_FULL_CONTEXT set, however as shallow states too loose
SPR values, render an incorrect terminology.
Signed-off-by: Pratik Rajesh Sampat <psampat@linux.ibm.com>
---
arch/powerpc/platforms/powernv/idle.c | 18 +++++++++---------
1 file changed, 9 insertions(+), 9 deletions(-)
diff --git a/arch/powerpc/platforms/powernv/idle.c b/arch/powerpc/platforms/powernv/idle.c
index f2e2a6a4c274..d54e7ef234e3 100644
--- a/arch/powerpc/platforms/powernv/idle.c
+++ b/arch/powerpc/platforms/powernv/idle.c
@@ -48,7 +48,7 @@ static bool default_stop_found;
* First stop state levels when SPR and TB loss can occur.
*/
static u64 pnv_first_tb_loss_level = MAX_STOP_STATE + 1;
-static u64 pnv_first_spr_loss_level = MAX_STOP_STATE + 1;
+static u64 pnv_first_fullstate_loss_level = MAX_STOP_STATE + 1;
/*
* psscr value and mask of the deepest stop idle state.
@@ -659,7 +659,7 @@ static unsigned long power9_idle_stop(unsigned long psscr, bool mmu_on)
*/
mmcr0 = mfspr(SPRN_MMCR0);
}
- if ((psscr & PSSCR_RL_MASK) >= pnv_first_spr_loss_level) {
+ if ((psscr & PSSCR_RL_MASK) >= pnv_first_fullstate_loss_level) {
sprs.lpcr = mfspr(SPRN_LPCR);
sprs.hfscr = mfspr(SPRN_HFSCR);
sprs.fscr = mfspr(SPRN_FSCR);
@@ -751,7 +751,7 @@ static unsigned long power9_idle_stop(unsigned long psscr, bool mmu_on)
* just always test PSSCR for SPR/TB state loss.
*/
pls = (psscr & PSSCR_PLS) >> PSSCR_PLS_SHIFT;
- if (likely(pls < pnv_first_spr_loss_level)) {
+ if (likely(pls < pnv_first_fullstate_loss_level)) {
if (sprs_saved)
atomic_stop_thread_idle();
goto out;
@@ -1098,7 +1098,7 @@ static void __init pnv_power9_idle_init(void)
* the deepest loss-less (OPAL_PM_STOP_INST_FAST) stop state.
*/
pnv_first_tb_loss_level = MAX_STOP_STATE + 1;
- pnv_first_spr_loss_level = MAX_STOP_STATE + 1;
+ pnv_first_fullstate_loss_level = MAX_STOP_STATE + 1;
for (i = 0; i < nr_pnv_idle_states; i++) {
int err;
struct pnv_idle_states_t *state = &pnv_idle_states[i];
@@ -1109,8 +1109,8 @@ static void __init pnv_power9_idle_init(void)
pnv_first_tb_loss_level = psscr_rl;
if ((state->flags & OPAL_PM_LOSE_FULL_CONTEXT) &&
- (pnv_first_spr_loss_level > psscr_rl))
- pnv_first_spr_loss_level = psscr_rl;
+ (pnv_first_fullstate_loss_level > psscr_rl))
+ pnv_first_fullstate_loss_level = psscr_rl;
/*
* The idle code does not deal with TB loss occurring
@@ -1121,8 +1121,8 @@ static void __init pnv_power9_idle_init(void)
* compatibility.
*/
if ((state->flags & OPAL_PM_TIMEBASE_STOP) &&
- (pnv_first_spr_loss_level > psscr_rl))
- pnv_first_spr_loss_level = psscr_rl;
+ (pnv_first_fullstate_loss_level > psscr_rl))
+ pnv_first_fullstate_loss_level = psscr_rl;
err = validate_psscr_val_mask(&state->psscr_val,
&state->psscr_mask,
@@ -1168,7 +1168,7 @@ static void __init pnv_power9_idle_init(void)
}
pr_info("cpuidle-powernv: First stop level that may lose SPRs = 0x%llx\n",
- pnv_first_spr_loss_level);
+ pnv_first_fullstate_loss_level);
pr_info("cpuidle-powernv: First stop level that may lose timebase = 0x%llx\n",
pnv_first_tb_loss_level);
--
2.25.4
next prev parent reply other threads:[~2020-07-10 5:28 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-10 5:22 [PATCH v2 0/3] Power10 basic energy management Pratik Rajesh Sampat
2020-07-10 5:22 ` [PATCH v2 1/3] powerpc/powernv/idle: Exclude mfspr on HID1, 4, 5 on P9 and above Pratik Rajesh Sampat
2020-07-13 5:53 ` Nicholas Piggin
2020-07-10 5:22 ` [PATCH v2 2/3] powerpc/powernv/idle: save-restore DAWR0, DAWRX0 for P10 Pratik Rajesh Sampat
2020-07-13 5:52 ` Nicholas Piggin
2020-07-20 4:30 ` Ravi Bangoria
2020-07-20 4:24 ` [PATCH v2 2/3] powerpc/powernv/idle: save-restore DAWR0,DAWRX0 " Ravi Bangoria
2020-07-24 1:25 ` Michael Neuling
2020-07-24 6:34 ` Pratik Sampat
2020-07-10 5:22 ` Pratik Rajesh Sampat [this message]
2020-07-13 5:23 ` [PATCH v2 0/3] Power10 basic energy management Nicholas Piggin
2020-07-13 10:02 ` Pratik Sampat
2020-07-13 16:50 ` Nicholas Piggin
2020-07-13 18:27 ` Pratik Sampat
2020-07-13 10:48 ` Gautham R Shenoy
2020-07-13 16:58 ` Nicholas Piggin
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