Commit f2e35789 authored by Yangtao Li's avatar Yangtao Li Committed by Jaegeuk Kim
Browse files

f2fs: export ipu policy in debugfs 



Export ipu_policy as a string in debugfs for better readability and
it can help us better understand some strategies of the file system.

Signed-off-by: default avatarYangtao Li <frank.li@vivo.com>
Reviewed-by: default avatarChao Yu <chao@kernel.org>
Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
parent 273a51e5

fs/f2fs/debug.c

+24 −0
Original line number Original line Diff line number Diff line
@@ -354,6 +354,17 @@ static char *s_flag[] = { 
	[SBI_IS_FREEZING]	= " freezefs",

	[SBI_IS_FREEZING]	= " freezefs",

};

};





static const char *ipu_mode_names[F2FS_IPU_MAX] = {

	[F2FS_IPU_FORCE]	= "FORCE",

	[F2FS_IPU_SSR]		= "SSR",

	[F2FS_IPU_UTIL]		= "UTIL",

	[F2FS_IPU_SSR_UTIL]	= "SSR_UTIL",

	[F2FS_IPU_FSYNC]	= "FSYNC",

	[F2FS_IPU_ASYNC]	= "ASYNC",

	[F2FS_IPU_NOCACHE]	= "NOCACHE",

	[F2FS_IPU_HONOR_OPU_WRITE]	= "HONOR_OPU_WRITE",

};



static int stat_show(struct seq_file *s, void *v)

static int stat_show(struct seq_file *s, void *v)

{

{

	struct f2fs_stat_info *si;

	struct f2fs_stat_info *si;
@@ -384,6 +395,19 @@ static int stat_show(struct seq_file *s, void *v) 
		seq_printf(s, "Current Time Sec: %llu / Mounted Time Sec: %llu\n\n",

		seq_printf(s, "Current Time Sec: %llu / Mounted Time Sec: %llu\n\n",

					ktime_get_boottime_seconds(),

					ktime_get_boottime_seconds(),

					SIT_I(si->sbi)->mounted_time);

					SIT_I(si->sbi)->mounted_time);



		seq_puts(s, "Policy:\n");

		seq_puts(s, "  - IPU: [");

		if (IS_F2FS_IPU_DISABLE(si->sbi)) {

			seq_puts(s, " DISABLE");

		} else {

			unsigned long policy = SM_I(si->sbi)->ipu_policy;



			for_each_set_bit(j, &policy, F2FS_IPU_MAX)

				seq_printf(s, " %s", ipu_mode_names[j]);

		}

		seq_puts(s, " ]\n\n");



		if (test_opt(si->sbi, DISCARD))

		if (test_opt(si->sbi, DISCARD))

			seq_printf(s, "Utilization: %u%% (%u valid blocks, %u discard blocks)\n",

			seq_printf(s, "Utilization: %u%% (%u valid blocks, %u discard blocks)\n",

				si->utilization, si->valid_count, si->discard_blks);

				si->utilization, si->valid_count, si->discard_blks);

fs/f2fs/segment.h

+1 −0
Original line number Original line Diff line number Diff line
@@ -672,6 +672,7 @@ static inline int utilization(struct f2fs_sb_info *sbi) 




#define F2FS_IPU_DISABLE	0

#define F2FS_IPU_DISABLE	0





/* Modification on enum should be synchronized with ipu_mode_names array */

enum {

enum {

	F2FS_IPU_FORCE,

	F2FS_IPU_FORCE,

	F2FS_IPU_SSR,

	F2FS_IPU_SSR,