linux-kernel - [PATCH v4 07/12] arm-cci: Get the status of a counter

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <1450374559-23315-8-git-send-email-suzuki.poulose@arm.com>
Date:	Thu, 17 Dec 2015 17:49:14 +0000
From:	"Suzuki K. Poulose" <suzuki.poulose@....com>
To:	linux-arm-kernel@...ts.infradead.org
Cc:	linux-kernel@...r.kernel.org, mark.rutland@....com,
	punit.agrawal@....com, arm@...nel.org,
	"Suzuki K. Poulose" <suzuki.poulose@....com>
Subject: [PATCH v4 07/12] arm-cci: Get the status of a counter

Add helper routines to get the counter status and the event
programmed on it.

Cc: Punit Agrawal <punit.agrawal@....com>
Acked-by: Mark Rutland <mark.rutland@....com>
Signed-off-by: Suzuki K. Poulose <suzuki.poulose@....com>
---
 drivers/bus/arm-cci.c |   12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/drivers/bus/arm-cci.c b/drivers/bus/arm-cci.c
index e2824a7..7f77f65 100644
--- a/drivers/bus/arm-cci.c
+++ b/drivers/bus/arm-cci.c
@@ -662,11 +662,23 @@ static void pmu_enable_counter(struct cci_pmu *cci_pmu, int idx)
 	pmu_write_register(cci_pmu, 1, idx, CCI_PMU_CNTR_CTRL);
 }
 
+static bool __maybe_unused
+pmu_counter_is_enabled(struct cci_pmu *cci_pmu, int idx)
+{
+	return (pmu_read_register(cci_pmu, idx, CCI_PMU_CNTR_CTRL) & 0x1) != 0;
+}
+
 static void pmu_set_event(struct cci_pmu *cci_pmu, int idx, unsigned long event)
 {
 	pmu_write_register(cci_pmu, event, idx, CCI_PMU_EVT_SEL);
 }
 
+static u32 __maybe_unused
+pmu_get_event(struct cci_pmu *cci_pmu, int idx)
+{
+	return pmu_read_register(cci_pmu, idx, CCI_PMU_EVT_SEL);
+}
+
 /*
  * Returns the number of programmable counters actually implemented
  * by the cci
-- 
1.7.9.5

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/