Re: [PATCH 2/3 v2] proc: Export statistics for softirq to /proc

Eric Dumazet
2008-11-22T11:37:17Z

Keika Kobayashi a écrit :
> Export statistics for softirq in /proc/softirqs and /proc/stat.
>
> 1. /proc/softirqs
> Implement /proc/softirqs which shows the number of softirq
> for each CPU like /proc/interrupts.
>
> 2. /proc/stat
> Add the "softirq" line to /proc/stat.
> This line shows the number of softirq for all cpu.
> The first column is the total of all softirqs and
> each subsequent column is the total for particular softirq.
>
> Signed-off-by: Keika Kobayashi <kobayashi.kk@ncos.nec.co.jp>
> Reviewed-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
> ---
> fs/proc/Makefile | 1 +
> fs/proc/softirqs.c | 57 ++++++++++++++++++++++++++++++++++++++++++++++++++++
> fs/proc/stat.c | 17 +++++++++++++++
> 3 files changed, 75 insertions(+), 0 deletions(-)
> create mode 100644 fs/proc/softirqs.c
>
> diff --git a/fs/proc/Makefile b/fs/proc/Makefile
> index 63d9651..11a7b5c 100644
> --- a/fs/proc/Makefile
> +++ b/fs/proc/Makefile
> @@ -18,6 +18,7 @@ proc-y += meminfo.o
> proc-y += stat.o
> proc-y += uptime.o
> proc-y += version.o
> +proc-y += softirqs.o
> proc-$(CONFIG_PROC_SYSCTL) += proc_sysctl.o
> proc-$(CONFIG_NET) += proc_net.o
> proc-$(CONFIG_PROC_KCORE) += kcore.o
> diff --git a/fs/proc/softirqs.c b/fs/proc/softirqs.c
> new file mode 100644
> index 0000000..543f9d9
> --- /dev/null
> +++ b/fs/proc/softirqs.c
> @@ -0,0 +1,57 @@
> +#include <linux/init.h>
> +#include <linux/kernel_stat.h>
> +#include <linux/proc_fs.h>
> +#include <linux/seq_file.h>
> +
> +static const char *desc_array[] = {
> + "HI",
> + "TIMER",
> + "NET_TX",
> + "NET_RX",
> + "BLOCK",
> + "TASKLET",
> + "SCHED",
> +#ifdef CONFIG_HIGH_RES_TIMERS
> + "HRTIMER",
> +#endif
> + "RCU"};
> +

You could use C99 initializers here

[HI_SOFTIRQ] = "HI",
[TIMER_SOFTIRQ] = "TIMER",
...