From: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
To: andriy.shevchenko@linux.intel.com
Cc: platform-driver-x86@vger.kernel.org, prarit@redhat.com,
linux-kernel@vger.kernel.org,
Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Subject: [PATCH 05/27] tools/power/x86/intel-speed-select: Special handling for CPU 0 online/offline
Date: Thu, 5 Mar 2020 14:45:16 -0800 [thread overview]
Message-ID: <20200305224538.490864-6-srinivas.pandruvada@linux.intel.com> (raw)
In-Reply-To: <20200305224538.490864-1-srinivas.pandruvada@linux.intel.com>
When "-o" option for force online/offline is used with command:
perf-profile set-config-level
If the config level calls for CPU 0 online/offline, then call fails
as there is special kernel setup required for CPU 0 online/offline
and the currently not setup for that.
But when call is for online CPU 0, then don't fail. Just warn that
this system is not setup for CPU 0 online/offline.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
---
tools/power/x86/intel-speed-select/isst-config.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/tools/power/x86/intel-speed-select/isst-config.c b/tools/power/x86/intel-speed-select/isst-config.c
index 405b03cba248..b8f4846d7c78 100644
--- a/tools/power/x86/intel-speed-select/isst-config.c
+++ b/tools/power/x86/intel-speed-select/isst-config.c
@@ -220,8 +220,14 @@ static void set_cpu_online_offline(int cpu, int state)
"/sys/devices/system/cpu/cpu%d/online", cpu);
fd = open(buffer, O_WRONLY);
- if (fd < 0)
+ if (fd < 0) {
+ if (!cpu && state) {
+ fprintf(stderr, "This system is not configured for CPU 0 online/offline\n");
+ fprintf(stderr, "Ignoring online request for CPU 0 as this is already online\n");
+ return;
+ }
err(-1, "%s open failed", buffer);
+ }
if (state)
ret = write(fd, "1\n", 2);
--
2.24.1
next prev parent reply other threads:[~2020-03-05 22:45 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-05 22:45 [PATCH 00/27] tools/power/x86/intel-speed-select: Enhancements Srinivas Pandruvada
2020-03-05 22:45 ` [PATCH 01/27] tools/power/x86/intel-speed-select: Warn for invalid package id Srinivas Pandruvada
2020-03-05 22:45 ` [PATCH 02/27] tools/power/x86/intel-speed-select: Make target CPU optional for core-power info Srinivas Pandruvada
2020-03-05 22:45 ` [PATCH 03/27] tools/power/x86/intel-speed-select: Enhance core-power info command Srinivas Pandruvada
2020-03-05 22:45 ` [PATCH 04/27] tools/power/x86/intel-speed-select: Use more verbiage for clos information Srinivas Pandruvada
2020-03-05 22:45 ` Srinivas Pandruvada [this message]
2020-03-05 22:45 ` [PATCH 06/27] tools/power/x86/intel-speed-select: Max CPU count calculation when CPU0 is offline Srinivas Pandruvada
2020-03-05 22:45 ` [PATCH 07/27] tools/power/x86/intel-speed-select: Store topology information Srinivas Pandruvada
2020-03-05 22:45 ` [PATCH 08/27] tools/power/x86/intel-speed-select: Helpful warning for missing kernel interface Srinivas Pandruvada
2020-03-05 22:45 ` [PATCH 09/27] tools/power/x86/intel-speed-select: Enhance help Srinivas Pandruvada
2020-03-05 22:45 ` [PATCH 10/27] tools/power/x86/intel-speed-select: Enhance --info option Srinivas Pandruvada
2020-03-05 22:45 ` [PATCH 11/27] tools/power/x86/intel-speed-select: Add an API for error/information print Srinivas Pandruvada
2020-03-05 22:45 ` [PATCH 12/27] tools/power/x86/intel-speed-select: Improve error display for perf-profile feature Srinivas Pandruvada
2020-03-05 22:45 ` [PATCH 13/27] tools/power/x86/intel-speed-select: Check feature status first Srinivas Pandruvada
2020-03-05 22:45 ` [PATCH 14/27] tools/power/x86/intel-speed-select: Display error for invalid priority type Srinivas Pandruvada
2020-03-05 22:45 ` [PATCH 15/27] tools/power/x86/intel-speed-select: Enhance help for core-power assoc Srinivas Pandruvada
2020-03-05 22:45 ` [PATCH 16/27] tools/power/x86/intel-speed-select: Improve output of perf-profile commands Srinivas Pandruvada
2020-03-05 22:45 ` [PATCH 17/27] tools/power/x86/intel-speed-select: Improve error display for base-freq feature Srinivas Pandruvada
2020-03-05 22:45 ` [PATCH 18/27] tools/power/x86/intel-speed-select: Improve error display for turbo-freq feature Srinivas Pandruvada
2020-03-05 22:45 ` [PATCH 19/27] tools/power/x86/intel-speed-select: Kernel interface error handling Srinivas Pandruvada
2020-03-05 22:45 ` [PATCH 20/27] tools/power/x86/intel-speed-select: Improve core-power result and error display Srinivas Pandruvada
2020-03-05 22:45 ` [PATCH 21/27] tools/power/x86/intel-speed-select: Show error for invalid CPUs in the options Srinivas Pandruvada
2020-03-05 22:45 ` [PATCH 22/27] tools/power/x86/intel-speed-select: Improve CLX commands Srinivas Pandruvada
2020-03-05 22:45 ` [PATCH 23/27] tools/power/x86/intel-speed-select: Fix avx options for turbo-freq feature Srinivas Pandruvada
2020-03-05 22:45 ` [PATCH 24/27] tools/power/x86/intel-speed-select: Print friendly warning for bad command line Srinivas Pandruvada
2020-03-05 22:45 ` [PATCH 25/27] tools/power/x86/intel-speed-select: Add display for enabled cpus count Srinivas Pandruvada
2020-03-05 22:45 ` [PATCH 26/27] tools/power/x86/intel-speed-select: Avoid duplicate Package strings for json Srinivas Pandruvada
2020-03-05 22:45 ` [PATCH 27/27] tools/power/x86/intel-speed-select: Update version Srinivas Pandruvada
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