kernel.git/arch/parisc/kernel/processor.c, branch linux-4.14.y

parisc: Drop loops_per_jiffy from per_cpu struct

2023-09-23T08:47:03Z

commit 93346da8ff47cc00f953c7f38a2d6ba11977fc42 upstream. There is no need to keep a loops_per_jiffy value per cpu. Drop it. Signed-off-by: Helge Deller Cc: Guenter Roeck Signed-off-by: Greg Kroah-Hartman

parisc: Fix /proc/cpuinfo output for lscpu

2023-09-23T08:47:00Z

commit 9f5ba4b3e1b3c123eeca5d2d09161e8720048b5c upstream. The lscpu command is broken since commit cab56b51ec0e ("parisc: Fix device names in /proc/iomem") added the PA pathname to all PA devices, includig the CPUs. lscpu parses /proc/cpuinfo and now believes it found different CPU types since every CPU is listed with an unique identifier (PA pathname). Fix this problem by simply dropping the PA pathname when listing the CPUs in /proc/cpuinfo. There is no need to show the pathname in this procfs file. Fixes: cab56b51ec0e ("parisc: Fix device names in /proc/iomem") Signed-off-by: Helge Deller Cc: # v4.9+ Signed-off-by: Greg Kroah-Hartman

parisc: Merge model and model name into one line in /proc/cpuinfo

2022-05-12T10:17:08Z

commit 5b89966bc96a06f6ad65f64ae4b0461918fcc9d3 upstream. The Linux tool "lscpu" shows the double amount of CPUs if we have "model" and "model name" in two different lines in /proc/cpuinfo. This change combines the model and the model name into one line. Signed-off-by: Helge Deller Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman

parisc: Move init_per_cpu() into init section

2017-09-22T17:47:08Z

Signed-off-by: Helge Deller

parisc/core: Fix section mismatches

2017-08-22T14:34:37Z

Signed-off-by: Helge Deller

parisc/random: Add machine specific randomness

2017-08-22T14:34:34Z

Add some machine-specific information like values of cr16 cycle counter, machine-specific software ID and machine model to the random generator. Signed-off-by: Helge Deller

parisc: Enhance detection of synchronous cr16 clocksources

2017-05-10T15:46:14Z

The cr16 clocks of the physical PARISC CPUs are usually nonsynchronous. Nevertheless, it seems that each CPU socket (which holds two cores) of PA8800 and PA8900 CPUs (e.g. in a C8000 workstation) is fed by the same clock source, which makes the cr16 clocks of each CPU socket syncronous. Let's try to detect such situations and mark the cr16 clocksource stable on single-socket and single-core machines. Signed-off-by: Helge Deller

parisc: Optimize timer interrupt function

2016-12-20T20:39:40Z

Restructure the timer interrupt function to better cope with missed timer irqs. Optimize the calculation when the next interrupt should happen and skip irqs if they would happen too shortly after exit of the irq function. The update_process_times() call is done anyway at every timer irq, so we can safely drop the prof_counter and prof_multiplier variables from the per_cpu structure. Signed-off-by: Helge Deller

parisc: Enhance CPU detection code on PAT machines

2016-12-12T21:28:09Z

This patch fixes the debug code which runs during the inventory scan on machines with PAT firmware. Additionally print out the relationship between the detected logical CPU number and it's physical location and physical cpu number. This leads to information which can be used to feed numa-structures in the kernel in later patches. An example output is from my single-CPU (2 cores) C8000 machine is: Logical CPU #0 is physical cpu #0 at 0xffff0000ffff15, hpa 0xfffffffffe780000 Logical CPU #1 is physical cpu #1 at 0xffff0000ffff15, hpa 0xfffffffffe781000 Signed-off-by: Helge Deller

parisc: Fix automatic selection of cr16 clocksource

2016-08-20T11:33:51Z

Commit 54b66800907 (parisc: Add native high-resolution sched_clock() implementation) added support to use the CPU-internal cr16 counters as reliable clocksource with the help of HAVE_UNSTABLE_SCHED_CLOCK. Sadly the commit missed to remove the hack which prevented cr16 to become the default clocksource even on SMP systems. Signed-off-by: Helge Deller Cc: stable@vger.kernel.org # 4.7+