Gautham R. Shenoy f7bc9b209e cpufreq: stats: Handle the case when trans_table goes beyond PAGE_SIZE ... On platforms with large number of Pstates, the transition table, which is a NxN matrix, can overflow beyond the PAGE_SIZE boundary. This can be seen on POWER9 which has 100+ Pstates. As a result, each time the trans_table is read for any of the CPUs, we will get the following error. --------------------------------------------------- fill_read_buffer: show+0x0/0xa0 returned bad count --------------------------------------------------- This patch ensures that in case of an overflow, we print a warning once in the dmesg and return FILE TOO LARGE error for this and all subsequent accesses of trans_table. Signed-off-by: Gautham R. Shenoy <ego@linux.vnet.ibm.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>		2017-11-08 23:41:25 +01:00
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amd-powernow.txt
core.txt	cpufreq: Documentation: Updates based on current code	2017-02-03 23:59:40 +01:00
cpu-drivers.txt	Documentation: cpu-freq: cpu-drivers: Fix repetition of word 'to'	2017-03-09 02:43:34 -07:00
cpufreq-nforce2.txt
cpufreq-stats.txt	cpufreq: stats: Handle the case when trans_table goes beyond PAGE_SIZE	2017-11-08 23:41:25 +01:00
index.txt	cpufreq: docs: Drop intel-pstate.txt from index.txt	2017-09-28 02:08:43 +02:00
pcc-cpufreq.txt	Revert "cpufreq: pcc-cpufreq: update default value of cpuinfo_transition_latency"	2016-07-22 23:51:06 +02:00