clock: Define and use new clock_display_freq()
It's common to want to print a human-readable indication of a clock's
frequency. Provide a utility function in the clock API to return a
string which is a displayable representation of the frequency,
and use it in qdev-monitor.c.
Before:
(qemu) info qtree
[...]
dev: xilinx,zynq_slcr, id ""
clock-in "ps_clk" freq_hz=3.
333333e+07
mmio
00000000f8000000/
0000000000001000
After:
dev: xilinx,zynq_slcr, id ""
clock-in "ps_clk" freq_hz=33.3 MHz
mmio
00000000f8000000/
0000000000001000
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Luc Michel <luc@lmichel.fr>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <
20201215150929.30311-5-peter.maydell@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>