From: Matt Turner <mattst88@gmail.com>
To: Madhavan Srinivasan <maddy@linux.ibm.com>,
Michael Ellerman <mpe@ellerman.id.au>,
Nicholas Piggin <npiggin@gmail.com>,
"Christophe Leroy (CS GROUP)" <chleroy@kernel.org>,
"Ritesh Harjani (IBM)" <ritesh.list@gmail.com>,
Shrikanth Hegde <sshegde@linux.ibm.com>,
Paul Mackerras <paulus@ozlabs.org>
Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org,
Matt Turner <mattst88@gmail.com>
Subject: [PATCH 5/8] powerpc/perf: mpc7450: Add the PMC6 L3 events to the alternatives table
Date: Mon, 09 Nov 2026 20:47:04 -0500 [thread overview]
Message-ID: <20261109-ppc32-perf-v1-5-a6e8a55b3b48@gmail.com> (raw)
In-Reply-To: <20261109-ppc32-perf-v1-0-a6e8a55b3b48@gmail.com>
PMC6 repeats five L3 events at a second select value that the
alternatives table doesn't list:
0x61f L3 hits, also 0x503 and 0x603
0x620 L3 misses, also 0x514 and 0x61e
0x621 L3 instruction misses, also 0x505 and 0x605
0x622 L3 data misses, also 0x507 and 0x607
0x625 L3 touch hits, also 0x50e and 0x60e
Each is the same event as the PMC5 code, so add them to its row. The
scheduler can then move them to PMC5 when PMC6 is taken.
Not tested on hardware with an L3; the 7448 has none.
Signed-off-by: Matt Turner <mattst88@gmail.com>
---
arch/powerpc/perf/mpc7450-pmu.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/arch/powerpc/perf/mpc7450-pmu.c b/arch/powerpc/perf/mpc7450-pmu.c
index 27337a03ebde..b2fe977cea16 100644
--- a/arch/powerpc/perf/mpc7450-pmu.c
+++ b/arch/powerpc/perf/mpc7450-pmu.c
@@ -185,18 +185,18 @@ static int mpc7450_get_constraint(u64 event, unsigned long *maskp,
static const unsigned int event_alternatives[][MAX_ALT] = {
{ 0x217, 0x317 }, /* PM_L1_DCACHE_MISS */
{ 0x502, 0x602 }, /* PM_L2_HIT */
- { 0x503, 0x603 }, /* PM_L3_HIT */
+ { 0x503, 0x603, 0x61f }, /* PM_L3_HIT */
{ 0x504, 0x604 }, /* PM_L2_ICACHE_MISS */
- { 0x505, 0x605 }, /* PM_L3_ICACHE_MISS */
+ { 0x505, 0x605, 0x621 }, /* PM_L3_ICACHE_MISS */
{ 0x506, 0x606 }, /* PM_L2_DCACHE_MISS */
- { 0x507, 0x607 }, /* PM_L3_DCACHE_MISS */
+ { 0x507, 0x607, 0x622 }, /* PM_L3_DCACHE_MISS */
{ 0x50a, 0x623 }, /* PM_LD_HIT_L3 */
{ 0x50b, 0x624 }, /* PM_ST_HIT_L3 */
{ 0x50d, 0x60d }, /* PM_L2_TOUCH_HIT */
- { 0x50e, 0x60e }, /* PM_L3_TOUCH_HIT */
+ { 0x50e, 0x60e, 0x625 }, /* PM_L3_TOUCH_HIT */
{ 0x512, 0x612 }, /* PM_INT_LOCAL */
{ 0x513, 0x61d }, /* PM_L2_MISS */
- { 0x514, 0x61e }, /* PM_L3_MISS */
+ { 0x514, 0x61e, 0x620 }, /* PM_L3_MISS */
};
/*
--
2.55.0
next prev parent reply other threads:[~2026-11-10 1:47 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-11-10 1:46 [PATCH 0/8] powerpc/perf: mpc7450: Event fixes, SIAR sampling and sysfs event names Matt Turner
2026-11-10 1:47 ` [PATCH 1/8] powerpc/perf: mpc7450: Event 0x30d does not use the threshold Matt Turner
2026-11-10 1:47 ` [PATCH 2/8] powerpc/perf: mpc7450: Event 0x634 counts L2 prefetches, not L1I Matt Turner
2026-11-10 1:47 ` [PATCH 3/8] powerpc/perf: mpc7450: Remove the snoop retry alternatives Matt Turner
2026-11-10 1:47 ` [PATCH 4/8] powerpc/perf: mpc7450: Fill in the L1 data cache events Matt Turner
2026-11-10 1:47 ` Matt Turner [this message]
2026-11-10 1:47 ` [PATCH 6/8] powerpc/perf: mpc7450: Export the event format in sysfs Matt Turner
2026-11-10 1:47 ` [PATCH 7/8] powerpc/perf: Use SIAR for sample addresses on 32-bit Matt Turner
2026-11-10 1:47 ` [PATCH 8/8] powerpc/perf: mpc7450: Export event names in sysfs Matt Turner
2026-11-10 1:55 ` [PATCH 0/8] powerpc/perf: mpc7450: Event fixes, SIAR sampling and sysfs event names Matt Turner
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