diff options
| author | Alexander Zarochentsev <alexander.zarochentsev@seagate.com> | 2016-12-02 19:53:29 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-12-06 10:56:29 +0100 |
| commit | 4ec941d68c2cd8db5c6f7c2fab0f47a352f6b204 (patch) | |
| tree | 1c545fd3bbea6e7f9e00f08b7013fa7a8d122394 /drivers/staging | |
| parent | 989a0d7dfe7726f795b9de623b6906b5da09a076 (diff) | |
staging: lustre: libcfs: remove lnet upcall code
Removing lnet upcall infrastructure completely
as nobody uses it anymore. The upcall causes a delay
before calling BUG() and might even cause a hang
making getting a crash dump unreliable or containing
outdated info.
Signed-off-by: Alexander Zarochentsev <alexander.zarochentsev@seagate.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-8418
Seagate-bug-id: MRP-2939
Reviewed-on: http://review.whamcloud.com/21440
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: James Simmons <uja.ornl@yahoo.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: James Simmons <jsimmons@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging')
4 files changed, 0 insertions, 65 deletions
diff --git a/drivers/staging/lustre/include/linux/libcfs/libcfs.h b/drivers/staging/lustre/include/linux/libcfs/libcfs.h index 70eb08e270f5..cc2c0e97bb7e 100644 --- a/drivers/staging/lustre/include/linux/libcfs/libcfs.h +++ b/drivers/staging/lustre/include/linux/libcfs/libcfs.h @@ -125,7 +125,6 @@ extern struct miscdevice libcfs_dev; /** * The path of debug log dump upcall script. */ -extern char lnet_upcall[1024]; extern char lnet_debug_log_upcall[1024]; extern struct cfs_wi_sched *cfs_sched_rehash; diff --git a/drivers/staging/lustre/include/linux/libcfs/libcfs_private.h b/drivers/staging/lustre/include/linux/libcfs/libcfs_private.h index 41a651f3bd96..aab15d8112a4 100644 --- a/drivers/staging/lustre/include/linux/libcfs/libcfs_private.h +++ b/drivers/staging/lustre/include/linux/libcfs/libcfs_private.h @@ -169,8 +169,6 @@ do { \ #define ntohs(x) ___ntohs(x) #endif -void libcfs_run_upcall(char **argv); -void libcfs_run_lbug_upcall(struct libcfs_debug_msg_data *msg); void libcfs_debug_dumplog(void); int libcfs_debug_init(unsigned long bufsize); int libcfs_debug_cleanup(void); diff --git a/drivers/staging/lustre/lnet/libcfs/linux/linux-debug.c b/drivers/staging/lustre/lnet/libcfs/linux/linux-debug.c index d8a98947d208..39a72e3f0c18 100644 --- a/drivers/staging/lustre/lnet/libcfs/linux/linux-debug.c +++ b/drivers/staging/lustre/lnet/libcfs/linux/linux-debug.c @@ -57,7 +57,6 @@ #include <linux/kallsyms.h> -char lnet_upcall[1024] = "/usr/lib/lustre/lnet_upcall"; char lnet_debug_log_upcall[1024] = "/usr/lib/lustre/lnet_debug_log_upcall"; /** @@ -92,58 +91,6 @@ void libcfs_run_debug_log_upcall(char *file) } } -void libcfs_run_upcall(char **argv) -{ - int rc; - int argc; - static const char * const envp[] = { - "HOME=/", - "PATH=/sbin:/bin:/usr/sbin:/usr/bin", - NULL - }; - - argv[0] = lnet_upcall; - argc = 1; - while (argv[argc]) - argc++; - - LASSERT(argc >= 2); - - rc = call_usermodehelper(argv[0], argv, (char **)envp, 1); - if (rc < 0 && rc != -ENOENT) { - CERROR("Error %d invoking LNET upcall %s %s%s%s%s%s%s%s%s; check /sys/kernel/debug/lnet/upcall\n", - rc, argv[0], argv[1], - argc < 3 ? "" : ",", argc < 3 ? "" : argv[2], - argc < 4 ? "" : ",", argc < 4 ? "" : argv[3], - argc < 5 ? "" : ",", argc < 5 ? "" : argv[4], - argc < 6 ? "" : ",..."); - } else { - CDEBUG(D_HA, "Invoked LNET upcall %s %s%s%s%s%s%s%s%s\n", - argv[0], argv[1], - argc < 3 ? "" : ",", argc < 3 ? "" : argv[2], - argc < 4 ? "" : ",", argc < 4 ? "" : argv[3], - argc < 5 ? "" : ",", argc < 5 ? "" : argv[4], - argc < 6 ? "" : ",..."); - } -} - -void libcfs_run_lbug_upcall(struct libcfs_debug_msg_data *msgdata) -{ - char *argv[6]; - char buf[32]; - - snprintf(buf, sizeof(buf), "%d", msgdata->msg_line); - - argv[1] = "LBUG"; - argv[2] = (char *)msgdata->msg_file; - argv[3] = (char *)msgdata->msg_fn; - argv[4] = buf; - argv[5] = NULL; - - libcfs_run_upcall(argv); -} -EXPORT_SYMBOL(libcfs_run_lbug_upcall); - /* coverity[+kill] */ void __noreturn lbug_with_loc(struct libcfs_debug_msg_data *msgdata) { @@ -158,7 +105,6 @@ void __noreturn lbug_with_loc(struct libcfs_debug_msg_data *msgdata) dump_stack(); if (!libcfs_panic_on_lbug) libcfs_debug_dumplog(); - libcfs_run_lbug_upcall(msgdata); if (libcfs_panic_on_lbug) panic("LBUG"); set_task_state(current, TASK_UNINTERRUPTIBLE); diff --git a/drivers/staging/lustre/lnet/libcfs/module.c b/drivers/staging/lustre/lnet/libcfs/module.c index 5884a338d797..161e04226521 100644 --- a/drivers/staging/lustre/lnet/libcfs/module.c +++ b/drivers/staging/lustre/lnet/libcfs/module.c @@ -365,14 +365,6 @@ static struct ctl_table lnet_table[] = { .mode = 0444, .proc_handler = &proc_cpt_table, }, - - { - .procname = "upcall", - .data = lnet_upcall, - .maxlen = sizeof(lnet_upcall), - .mode = 0644, - .proc_handler = &proc_dostring, - }, { .procname = "debug_log_upcall", .data = lnet_debug_log_upcall, |