linux-perf-users.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Anshuman Khandual <anshuman.khandual@arm.com>
To: linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org, peterz@infradead.org,
	acme@kernel.org, mark.rutland@arm.com, will@kernel.org,
	catalin.marinas@arm.com
Cc: Anshuman Khandual <anshuman.khandual@arm.com>,
	James Clark <james.clark@arm.com>, Rob Herring <robh@kernel.org>,
	Marc Zyngier <maz@kernel.org>, Ingo Molnar <mingo@redhat.com>
Subject: [PATCH V2 3/7] arm64/perf: Update struct pmu_hw_events for BRBE
Date: Thu,  8 Sep 2022 10:40:42 +0530	[thread overview]
Message-ID: <20220908051046.465307-4-anshuman.khandual@arm.com> (raw)
In-Reply-To: <20220908051046.465307-1-anshuman.khandual@arm.com>

A single perf event instance BRBE related contexts and data will be tracked
in struct pmu_hw_events. Hence update the structure to accommodate required
details related to BRBE.

Cc: Will Deacon <will@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
---
 include/linux/perf/arm_pmu.h | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/include/linux/perf/arm_pmu.h b/include/linux/perf/arm_pmu.h
index 3d427ac0ca45..18e519e4e658 100644
--- a/include/linux/perf/arm_pmu.h
+++ b/include/linux/perf/arm_pmu.h
@@ -43,6 +43,11 @@
 	},								\
 }
 
+/*
+ * Maximum branch records in BRBE
+ */
+#define BRBE_MAX_ENTRIES 64
+
 /* The events for a given PMU register set. */
 struct pmu_hw_events {
 	/*
@@ -69,6 +74,23 @@ struct pmu_hw_events {
 	struct arm_pmu		*percpu_pmu;
 
 	int irq;
+
+	/* Detected BRBE attributes */
+	bool				v1p1;
+	int				brbe_cc;
+	int				brbe_nr;
+
+	/* Evaluated BRBE configuration */
+	u64				brbfcr;
+	u64				brbcr;
+
+	/* Tracked BRBE context */
+	unsigned int			brbe_users;
+	void				*brbe_context;
+
+	/* Captured BRBE buffer - copied as is into perf_sample_data */
+	struct perf_branch_stack	brbe_stack;
+	struct perf_branch_entry	brbe_entries[BRBE_MAX_ENTRIES];
 };
 
 enum armpmu_attr_groups {
-- 
2.25.1


  parent reply	other threads:[~2022-09-08  5:11 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-09-08  5:10 [PATCH V2 0/7] arm64/perf: Enable branch stack sampling Anshuman Khandual
2022-09-08  5:10 ` [PATCH V2 1/7] arm64/perf: Add register definitions for BRBE Anshuman Khandual
2022-09-12  9:57   ` Mark Brown
2022-09-13  6:24     ` Anshuman Khandual
2022-09-13 11:30       ` Mark Brown
2022-09-08  5:10 ` [PATCH V2 2/7] arm64/perf: Update struct arm_pmu " Anshuman Khandual
2022-09-08  5:10 ` Anshuman Khandual [this message]
     [not found]   ` <202209082022.6BPdyQn8-lkp@intel.com>
2022-09-09  3:11     ` [PATCH V2 3/7] arm64/perf: Update struct pmu_hw_events " Anshuman Khandual
     [not found]   ` <202209082259.XDCTMY9g-lkp@intel.com>
2022-09-09  3:14     ` Anshuman Khandual
2022-09-12 10:12   ` Mark Brown
2022-09-13  5:33     ` Anshuman Khandual
2022-09-13 11:43       ` Mark Brown
2022-09-14  3:39         ` Anshuman Khandual
2022-09-14  9:35           ` Mark Brown
2022-09-08  5:10 ` [PATCH V2 4/7] driver/perf/arm_pmu_platform: Add support for BRBE attributes detection Anshuman Khandual
2022-09-08  5:10 ` [PATCH V2 5/7] arm64/perf: Drive BRBE from perf event states Anshuman Khandual
2022-09-08 15:31   ` kernel test robot
2022-09-08  5:10 ` [PATCH V2 6/7] arm64/perf: Add BRBE driver Anshuman Khandual
2022-09-08  9:23   ` kernel test robot
2022-09-08 10:16     ` Anshuman Khandual
2022-09-13 10:39   ` James Clark
2022-09-13 11:38     ` Anshuman Khandual
2022-09-08  5:10 ` [PATCH V2 7/7] arm64/perf: Enable branch stack sampling Anshuman Khandual
2022-09-13 10:55 ` [PATCH V2 0/7] " James Clark
2022-09-13 12:12   ` Anshuman Khandual
2022-09-13 13:12     ` James Clark
2022-09-14  4:43       ` Anshuman Khandual

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20220908051046.465307-4-anshuman.khandual@arm.com \
    --to=anshuman.khandual@arm.com \
    --cc=acme@kernel.org \
    --cc=catalin.marinas@arm.com \
    --cc=james.clark@arm.com \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-perf-users@vger.kernel.org \
    --cc=mark.rutland@arm.com \
    --cc=maz@kernel.org \
    --cc=mingo@redhat.com \
    --cc=peterz@infradead.org \
    --cc=robh@kernel.org \
    --cc=will@kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).