perf/x86/intel/uncore: Correct fixed counter index check in generic code
authorKan Liang <kan.liang@intel.com>
Thu, 3 May 2018 18:25:08 +0000 (11:25 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 3 Aug 2018 05:50:26 +0000 (07:50 +0200)
commit71b1bf6e97534f11dc268d4c9b7e5a9b9235e662
tree7927d8905fe3447acedd3219901154196a1769e6
parent38c8c0a9709d2159fd989b0061b0b73364427b64
perf/x86/intel/uncore: Correct fixed counter index check in generic code

[ Upstream commit 4749f8196452eeb73cf2086a6a9705bae479d33d ]

There is no index which is bigger than UNCORE_PMC_IDX_FIXED. The only
exception is client IMC uncore, which has been specially handled.
For generic code, it is not correct to use >= to check fixed counter.
The code quality issue will bring problem when a new counter index is
introduced.

Signed-off-by: Kan Liang <kan.liang@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: acme@kernel.org
Cc: eranian@google.com
Link: http://lkml.kernel.org/r/1525371913-10597-3-git-send-email-kan.liang@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
arch/x86/events/intel/uncore.c